CDM-600 Open Network Satellite Modem (2.4 kbps – 20 Mbps) Installation and Operation Manual For Firmware Version 2.0.1 or higher (see New in this Release – Section 1.5) IMPORTANT NOTE: The information contained in this document supercedes all previously published information regarding this product. Product specifications are subject to change without prior notice. Part Number MN/CDM600.
Errata A Comtech EF Data Documentation Update Subject: Change AUPC Parameters in Remote Control Date: Document: November 23, 2005 CDM-600 Open Network Satellite Modem (2.4 kbps – 20 Mbps) Installation and Operation Manual Revision 7, dated February 9, 2005 MN/CDM600.EA7 Attach this page to page 16-13 Part Number: Collating Instructions: Comments: The following changes affects the values shown on page 6-9 and 16-13.
AUPC Parameters APP= 6 bytes Command or Query. Defines AUPC operating parameters. Has the form abc.cd, where: a=Defines action on max. power condition. (0=do nothing, 1=generate Tx alarm) b=Defines action on remote demod unlock. (0=go to nominal power, 1=go to max power) c.c=target Eb/No value, for remote demod, from 0.0 to 14.9 dB, where numbers above 9.9 use hex representation for the 1 st character, ie 14.9 is coded as E.9. d =Max increase in Tx Power permitted, from 0.0 to 9.
Errata B Comtech EF Data Documentation Update Subject: Revised Miscellaneous Table Date: Document: April 18, 2006 CDM-600 Open Network Satellite Modem (2.4 kbps – 20 Mbps) Installation and Operation Manual Revision 7, dated February 9, 2005 MN/CDM600.EB7 Attach this page to page 15-9 Part Number: Collating Instructions: Comments: The following changes affects the values shown on page 15-9. Change Specifics: 15.
Errata C Comtech EF Data Documentation Update Subject: Chapter Title Date: Document: July 12, 2006 CDM-600 Open Network Satellite Modem (2.4 kbps – 20 Mbps) Installation and Operation Manual Revision 7, dated February 9, 2005 MN/CDM600.EC7 Attach this page to page 15-3 Part Number: Collating Instructions: Comments: The following changes affects odd numbers pages. Change Specifics: CDM-600 Satellite Modem Summary of Specifications Revision 7 MN/CDM600.
Errata D Comtech EF Data Documentation Update Subject: Changed Input Power Range Date: Document: July 18, 2006 CDM-570/570L Satellite Modem with Optional IP Module, Installation and Operation Manual, Rev. 4, dated April 12, 2006 MN/CDM-570L.ED4 Attach this page to page 12-3 Part Number: Collating Instructions: Comments: Highlighted Input Power Range changes are as follows: Change Specifics: 12.2 Demodulator Data rate range, operating modes, de-scrambling, input impedance/return loss etc.
Filename: T_ERRATA 2
Errata E Comtech EF Data Documentation Update Subject: Changed Figure 7-5, TPC Curve for Rate 7/8 Date: Document: July 27, 2006 CDM-570/570L Satellite Modem with Optional IP Module, Installation and Operation Manual, Rev. 4, dated April 12, 2006 MN/CDM-570L.EE4 Attach this page to page 7-14 Part Number: Collating Instructions: Comments: Chnaged slope of curves for TPC 7/8 for Figure 7-5. The following table highlights the changes to the BER curve.
Eb/No in dB 1 2 3 4 5 6 7 8 9 10 11 12 1E-1 Comtech Turbo Product Codec Rate 7/8 QPSK/OQPSK, 8-PSK and 16-QAM Uncoded BPSK/QPSK 1E-2 Uncoded 16-QAM 1E-3 Spec limit Rate 7/8 8-PSK Spec limit Rate 7/8 QPSK/OQPSK Uncoded 8-PSK 1E-4 1E-5 1E-6 1E-7 Spec limit Rate 7/8 16-QAM 1E-8 Typical performance 1E-9 BER 1 2 3 4 5 6 7 8 9 10 Figure 7-5.
Errata F Comtech EF Data Documentation Update Subject: Added Chart for AGC Voltage Date: Document: November 2, 2006 CDM-600 Open Network Satellite Modem (2.4 kbps – 20 Mbps) Installation and Operation Manual Revision 7, dated February 9, 2005 MN/CDM600.EF7 Attach this page to page 15-10 Part Number: Collating Instructions: Comments: 15.9 AGC Voltage Note: This is for reference only. CDM-600 AGC Voltage AGC Level (volts) 3 2.5 at 100 ksps 2 1.5 1 0.
s:\tpubs\manuals\released_word\modems\cdm600_rev7\errata f.
Errata G Comtech EF Data Documentation Update Subject: Revised Remote Command Index Date: Document: June 14, 2007 CDM-600 Open Network Satellite Modem (2.4 kbps – 20 Mbps) Installation and Operation Manual Revision 7, dated February 9, 2005 MN/CDM600.EG7 Attach this page to page 16-6 Part Number: Collating Instructions: Comments: The revised index is presented on the following pages. s:\tpubs\manuals\released_word\modems\cdm600_rev7\errata g.
A Address, 16–9, 16–10, 16–18, 16–25 ADJ?, 16–27 ADJ=, 16–27 Alarm, 16–14, 16–18, 16–20, 16–22, 16–23, 16–28, 16–39 APP?, 16–12 APP=, 16–12 AUP?, 16–12 AUP=, 16–12 AUPC, 16–11, 16–12, 16–13, 16–18, 16–20, 16–39 B Basic Protocol, 16–8 BFS?, 16–35 C CAE=, 16–34 CAS=, 16–33 CID?, 16–29 CID=, 16–29 CLD=, 16–31 CST=, 16–31 CTD?, 16–28 CTD=, 16–28 D D&I++, 16–8, 16–14, 16–16, 16–20, 16–23 DAY?, 16–31 DAY=, 16–31 DNI?, 16–40 DNI?n, 16–40 DNI=, 16–40 DTS?, 16–41 DTS=, 16–41 DTY?, 16–14 DTY=, 16–14 E EBA?, 16–22 EBA
RRS=, 16–20 RSI?, 16–20 RSI=, 16–20 RSL?, 16–35 RSW?, 16–22 RSW=, 16–10, 16–22 RTC, 16–24, 16–30, 16–31, 16–32 RTC=, 16–24 RTE?, 16–23 RTE=, 16–23 RVL?, 16–23 RVL=, 16–23 S SCP?, 16–26 SCP=, 16–26 Sequential, 16–17 SNO?, 16–36 SNO=, 16–36 SSI?, 16–32 SSI=, 16–32 Start Of Packet, 16–10 SWR?, 16–36 T TBA?, 16–14 TBA=, 16–14 TCK?, 16–13 TCK=, 16–13 TCR?, 16–10 TCR=, 16–9, 16–10 TDR?, 16–10 TDR=, 16–10 TET?, 16–15 TET=, 16–15 TFM?, 16–8 TFM=, 16–8 TFQ?, 16–11, 16–12, 16–9 TFQ=, 16–9, 16–11, 16–12, 16–9 TFT?, 16
This page intentionally left blank.
CDM-600 Open Network Satellite Modem (2.4 kbps – 20 Mbps) Installation and Operation Manual For Firmware Version 2.0.1 or higher (see New in this Release – Section 1.5) Comtech EF Data is an ISO 9001 Registered Company. Part Number MN/CDM600.IOM Revision 7 February 9, 2005 Copyright © Comtech EF Data, 2001 2003, 2004, 2005. All rights reserved. Printed in the USA. Comtech EF Data, 2114 West 7th Street, Tempe, Arizona 85281 USA, 480.333.2200, FAX: 480.333.
CDM-600 Satellite Modem Preface Revision 7 MN/CDM600.
Table of Contents PREFACE................................................................................................................................... XI Customer Service .......................................................................................................................................xi About this Manual ....................................................................................................................................xii Conventions and References ................
CDM-600 Satellite Modem Preface 2.5 Revision 7 MN/CDM600.IOM Connect External Cables ............................................................................................................ 2–4 CHAPTER 3. FUNCTIONAL DESCRIPTION........................................................................3–1 CHAPTER 4. PHYSICAL DESCRIPTION .............................................................................4–1 4.1 Introduction...................................................................
CDM-600 Satellite Modem Preface Revision 7 MN/CDM600.IOM 5.10 Balanced G.703 Interface Connector (P7) ................................................................................ 5–6 5.11 AC Power Connector .................................................................................................................. 5–7 5.12 Ground Connector ...................................................................................................................... 5–7 CHAPTER 6.
CDM-600 Satellite Modem Preface Revision 7 MN/CDM600.IOM 7.2 Viterbi .......................................................................................................................................... 7–1 7.3 Sequential..................................................................................................................................... 7–2 7.4 Reed-Solomon Outer Codec....................................................................................................... 7–3 7.
CDM-600 Satellite Modem Preface 10.2.3 Revision 7 MN/CDM600.IOM Buffer Enabled, RX<>TX (TX Terrestrial or External Clock)........................................... 10–3 10.3 X.21 Notes .................................................................................................................................. 10–3 10.4 Drop and Insert ......................................................................................................................... 10–6 10.5 Frame Formats...............
CDM-600 Satellite Modem Preface 13.5 Revision 7 MN/CDM600.IOM Effect on Eb/No performance .................................................................................................. 13–2 CHAPTER 14. FLASH UPGRADING..................................................................................14–1 CHAPTER 15. SUMMARY OF SPECIFICATIONS .............................................................15–1 15.1 Modulator.............................................................................
CDM-600 Satellite Modem Preface C.1 Revision 7 MN/CDM600.IOM Introduction................................................................................................................................ C–1 C.2 Activation Procedure ................................................................................................................. C–1 C.2.1 Serial Number ...................................................................................................................... C–1 C.2.
CDM-600 Satellite Modem Preface Revision 7 MN/CDM600.IOM Figures Figure 1-1. CDM-600 ............................................................................................................................... 1–1 Figure 2-1. Installation of the Optional Mounting Bracket, KT/6228-2..................................................... 2–3 Figure 3-1. CDM-600 Modem Block Diagram.......................................................................................... 3–2 Figure 4-1. Front Panel .........
Preface Customer Service Contact the Comtech EF Data Customer Support Department for: • Product support or training • Information on upgrading or returning a product • Reporting comments or suggestions concerning manuals A Customer Support representative may be reached at: Comtech EF Data Attention: Customer Support Department 2114 West 7th Street Tempe, Arizona 85281 USA 480.333.2200 (Main Comtech EF Data Number) 480.333.4357 (Customer Support Desk) 480.333.
CDM-600 Satellite Modem Preface Revision 7 MN/CDM600.IOM About this Manual This manual provides installation and operation information for the Comtech EF Data CDM-600 satellite modem. This is a technical document intended for earth station engineers, technicians, and operators responsible for the operation and maintenance of the CDM-600. Conventions and References Metric Conversion Metric conversion information is located on the inside back cover of this manual.
CDM-600 Satellite Modem Preface Revision 7 MN/CDM600.IOM Electrical Safety The CDM-600 Modem has been shown to comply with the following safety standard: • EN 60950: Safety of Information Technology Equipment, including electrical business machines. The equipment is rated for operation over the range 100 - 240 volts AC. It has a maximum power consumption of 40 watts, and draws a maximum of 400 mA.
CDM-600 Satellite Modem Preface Revision 7 MN/CDM600.IOM Installation The installation and connection to the line supply must be made in compliance to local or national wiring codes and regulations. The CDM-600 is designed for connection to a power system that has separate ground, line and neutral conductors. The equipment is not designed for connection to power system that has no direct connection to ground. The CDM-600 is shipped with a line inlet cable suitable for use in the country of operation.
CDM-600 Satellite Modem Preface Revision 7 MN/CDM600.IOM EMC (Electromagnetic Compatibility) In accordance with European Directive 89/336/EEC, the CDM-600 Modem has been shown, by independent testing, to comply with the following standards: Emissions: EN 55022 Class B - Limits and methods of measurement of radio interference characteristics of Information Technology Equipment.
CDM-600 Satellite Modem Preface Revision 7 MN/CDM600.IOM Warranty Policy This Comtech EF Data product is warranted against defects in material and workmanship for a period of 2 years from the date of shipment. During the warranty period, Comtech EF Data will, at its option, repair or replace products that prove to be defective. For equipment under warranty, the customer is responsible for freight to Comtech EF Data and all related custom, taxes, tariffs, insurance, etc.
Chapter 1. INTRODUCTION The CDM-600 (Figure 1-1) is an Open Network Satellite Modem, intended for both Intelsat and closed network applications. • • • • • • It is compliant with IESS-308/309/310/315 specifications, but also adds significant other features in closed network modes. It offers variable data rates from 2.4 to 20 Mbps, in BPSK, QPSK, Offset QPSK, 8-PSK, 8-QAM and 16-QAM modes.
CDM-600 Satellite Modem Introduction 1.1 Revision 7 MN/CDM600.IOM Standard Features The CDM-600 provides a wealth of standard features which go far beyond the basic requirements of the Intelsat specifications. • • • • • • • • • • Low rate variable data rates – 2.4 kbps to 5.0 Mbps Mid-rate variable data rates – 2.4 kbps to 10.0 Mbps High-rate variable data rates – 2.4 kbps to 20.
CDM-600 Satellite Modem Introduction 1.1.2 Revision 7 MN/CDM600.IOM Software – Flash Upgrading The internal software is both powerful and flexible, permitting storage and retrieval of up to 10 different modem configurations. The modem uses ‘flash memory’ technology internally, and new firmware can be uploaded to the unit from an external PC. This simplifies software upgrading, and updates can now be sent via the Internet, e-mail, or on disk.
CDM-600 Satellite Modem Introduction 1.2 Major Assemblies Assembly AS/11229-1 AS/0424-1 AS/0463 AS/9436 PL/9076-1 PL/9122-1 PL/10290 PL/10341-1 KT/9585-1 1.3 Revision 7 MN/CDM600.
CDM-600 Satellite Modem Introduction Revision 7 MN/CDM600.IOM The following table shows what other options are available: Option Description and Comments Low Rate Variable Mid-Rate Variable Full Rate Variable 8-PSK 16-QAM High Rate IBS ESC IBS IDR D&I Dual Audio mode Data rate 2.4 kbps to 5.0 Mbps Data rate 2.4 kbps to 10.0 Mbps Data rate 2.4 kbps to 20.
CDM-600 Satellite Modem Introduction 1.3.1 Revision 7 MN/CDM600.IOM FAST Accessible Options Comtech EF Data’s FAST system allows immediate implementation of different options through the user interface keypad. All FAST options are available through the basic platform unit. 1.3.2 FAST System Theory FAST is an enhancement feature available in Comtech EF Data products, enabling onlocation upgrade of the operating feature set - in the rack - without removing a modem from the setup.
CDM-600 Satellite Modem Introduction 1.3.4 Revision 7 MN/CDM600.IOM Hardware Options There are four hardware options available: 1) Low Rate (1st Generation) Turbo Product Codec - a plug-in daughter card (SIMM module). This is capable of data rates up to 5 Mbps, and code rates limited to Rate 5/16 (BPSK, Rate 21/44 (BPSK) and Rate 3/4 (QPSK, OQPSK, 8-PSK and 16QAM). 2) High Rate (2st Generation) Turbo Product Codec - a plug-in daughter card (SIMM module).
CDM-600 Satellite Modem Introduction Revision 7 MN/CDM600.IOM may select, either from the front panel, or via the remote control, to have the unit: Power-up instantly (in which case the frequency of the unit will drift until the oven has reached its correct operating temperature), OR: Select a warm-up delay, where the unit will not become operational until the oven has reached a temperature close to stabilization value.
CDM-600 Satellite Modem Introduction 1.5 Revision 7 MN/CDM600.IOM New in this Release Revision 7 of this document includes information on the the following new features: * Low-Density Parity Check (LDPC) Codec (available in Firmware Version 1.6.0 onwards). This is the latest form of Forward Error Correction, giving enhanced performance when compared to some TPC modes. This is a plug-in module that also includes all of the 2nd Generation TPC functionality.
CDM-600 Satellite Modem Introduction Revision 7 MN/CDM600.IOM This page is intentionally blank.
Chapter 2. INSTALLATION 2.1 Unpacking Inspect shipping containers for damage. If shipping containers are damaged, keep them until the contents of the shipment have been carefully inspected and checked for normal operation. The modem and manual are packaged in pre-formed, reusable, cardboard cartons containing foam spacing for maximum shipping protection. Do not use any cutting tool that will extend more than 1 inch into the container. This can cause damage to the modem.
CDM-600 Satellite Modem Installation 2.2 Revision 7 MN/CDM600.IOM Mounting If the CDM-600 is to be mounted in a rack, ensure that there is adequate clearance for ventilation, particularly at the sides. In rack systems where there is high heat dissipation, forced air cooling must be provided by top or bottom mounted fans or blowers. Under no circumstance should the highest internal rack temperature be allowed to exceed 50°C (122°F).
CDM-600 Satellite Modem Installation Revision 7 MN/CDM600.IOM Equipment Rack Mounting Rail * * #10 Socket head screw BRACKET BOLTS Support * Bracket #10 Flat Washer #10 Hex Nut * Note: Components of mounting kit KT/6228-1 Back of Modem Figure 2-1. Installation of the Optional Mounting Bracket, KT/6228-2 MN/CDM600.
CDM-600 Satellite Modem Installation 2.3 Revision 7 MN/CDM600.IOM Configuration There are no internal jumpers to configure, no interface cards to install, and no other options to install. All configurations are carried out entirely in software. The unit should first be configured locally, using the front panel keypad and display. The unit will ship with a default 64 kbps, QPSK, Rate 1/2 configuration.
Chapter 3. FUNCTIONAL DESCRIPTION The CDM-600 has two fundamentally different types of interface - IF and data. • • The data interface is a bi-directional path which connects with the customer’s equipment (assumed to be the DTE) and the modem (assumed to be the DCE). The IF interface provides a bi-directional link with the satellite via the uplink and downlink equipment.
CDM-600 Satellite Modem Functional Description Revision 7 MN/CDM600.IOM removed. Following this, the data passes to the Plesiochronous/Doppler buffer, which has a programmable size, or may be bypassed. From here, the receive clock and data signals are routed to the terrestrial interface, and are passed to the externally connected DTE equipment. Physically the CDM-600 modem is comprised of two main card assemblies.
Chapter 4. PHYSICAL DESCRIPTION 4.1 Introduction The CDM-600 is constructed as a 1U high rack-mount chassis, which can be freestanding. Rack handles at the front ease removal from and placement into a rack. Figure 4-1 shows the front panel of the modem. Figure 4-1. Front Panel 4.2 Front Panel The front panel contains the Vacuum Fluorescent Display (VFD), keypad, and eight LED indicators. The user enters data via the keypad, and messages are displayed on the VFD.
CDM-600 Satellite Modem Physical Description 4.3 Revision 7 MN/CDM600.IOM Rear Panel Figure 4-2. Rear Panel External cables are attached to connectors on the rear panel of the CDM-600. These comprise: Name Rx IF Tx IF Aux Serial Overhead Data Interface External Reference Audio Remote Control IDR Alarm Alarms Balanced G.
CDM-600 Satellite Modem Physical Description 4.3.2 Revision 7 MN/CDM600.IOM Rx and Tx IF Connectors (J1 and J2) The IF port connectors are both a 50Ω BNC female type. 75Ω cable connectors (male) will have no problem mating with this 50Ω type. The electrical impedance presented by these connectors is controlled internally by an RF-switching arrangement. This selection between 50Ω and 75Ω is controlled either via the front panel menus, or via the remote control bus. 4.3.
CDM-600 Satellite Modem Physical Description 4.3.7 Revision 7 MN/CDM600.IOM Remote Control connector (P4B) The Remote Control connector is a 9-pin ‘D’ type male (DB-9-M). Access is provide to remote control ports of the modem, both EIA-232 and EIA-485. 4.3.8 IDR Alarm connector (P5A) The Alarms connector is a 15-pin 'D' type female (DB15-F). Four Form C backward alarm outputs specified by INTELSAT are found on this connector. 4.3.
CDM-600 Satellite Modem Physical Description 4.3.12 Revision 7 MN/CDM600.IOM IDI, DDO Connectors (J10A and J11A) Two additional female BNC 75Ω connectors for unbalanced operation at the G.703 data rate of E1 (2.048 Mbps). These are the Insert Data In (IDI) and Drop Data Out (DDO) port. An alternative use for these ports is for sub-rate G.703 auxiliary operation on modems with hardware revision 2.0 or higher. This permits operation at the additional rates of 512 and 1024 kbps.
CDM-600 Satellite Modem Physical Description 4.4 Revision 7 MN/CDM600.IOM Dimensional Envelope Figure 4-3.
Chapter 5. CONNECTOR PINOUTS 5.1 Connector Overview The rear panel connectors (Figure 5-1) provide all necessary external connections between the modem and other equipment. Figure 5-1. Rear Panel Table 5-1.
CDM-600 Satellite Modem Connector Pinouts 5.2 Revision 7 MN/CDM600.IOM BNC Connectors The BNC connectors are located on the rear panel of the modem. Refer to Table 5-2 for pin assignments. Table 5-2. BNC Connectors BNC Connector RX-IF TX-IF EXT REF IDI DDO RX (IDO) TX (IDI) 5.3 Reference J1 J2 J9 J10A J11A J10B J11B Description RX-IF signals TX-IF signals External Baseband Input Insert Data Input Drop Data Output RX G.703 (Unbalanced) TX G.
CDM-600 Satellite Modem Connector Pinouts 5.4 Revision 7 MN/CDM600.IOM Data Interface Connector (P3B) The Data Interface connector, a 25-pin D type female, conducts data input and output signals to and from the modem, and connects to customer’s terrestrial equipment, breakout panel, or protection switch. Refer to Table 5-4 for pin assignments. Table 5-4. Data Interface Connector Pin Assignments Pin # Generic Signal description Direction EIA-422 EIA 530 LVDS V.
CDM-600 Satellite Modem Connector Pinouts 5.5 Revision 7 MN/CDM600.IOM Audio Interface Connector (P4A) The Audio interface connection is a 9-pin female D connector located on the rear panel of the modem. Refer to Table 5-5 for pin assignments. Table 5-5. Audio Interface Connector Pin Assignments Pin # 1 6 2 7 8 4 9 5 3 5.
CDM-600 Satellite Modem Connector Pinouts 5.7 Revision 7 MN/CDM600.IOM IDR Backward Alarms Connector (P5A) The IDR Alarm interface connection is a 15-pin female connector located on the rear panel of the modem. Refer to Table 5-7 for pin assignments. Table 5-7. IDR Alarm Interface Connector Pin Assignments 5.
CDM-600 Satellite Modem Connector Pinouts 5.9 Revision 7 MN/CDM600.IOM Auxiliary Serial Connector (P6) Provides an RS-232 serial link between the modem and the CRS-150 1:1 Redundancy Switch. Table 5-9. Auxiliary Serial Connector (USB Type B Socket) Pin # 1,4 2 3 WARNING 5.10 Description Ground EIA-232 Transmit Data EIA-232 Receive Data Direction Out In Although this port uses a USB connector, the signals are not USB compatible.
CDM-600 Satellite Modem Connector Pinouts 5.11 Revision 7 MN/CDM600.IOM AC Power Connector A standard, detachable, non-locking, 3-prong power cord (IEC plug) supplies the Alternating Current (AC) power to the modem. Note the following: AC Power Specifications Input Power 40W maximum, 30W typical Input Voltage 100 - 240 volts AC, +6%/-10% - autosensing (total absolute max. range is 90 - 254 volts AC) Connector Type IEC Fuse Protection 1.25A Slow-blow (115 volt AC operation) 0.
CDM-600 Satellite Modem Connector Pinouts Revision 7 MN/CDM600.IOM This page is intentionally left blank.
Chapter 6. FRONT PANEL OPERATION 6.1 Description Figure 6-1. Front Panel View The user can fully control and monitor the operation of the CDM-600 from the front panel, using the keypad and display. Nested menus are used, which display all available options, and prompt the user to carry out a required action. The display has two lines each of 40 characters. On most menu screens, the user will observe a flashing solid block cursor, which blinks at a once-per-second rate.
CDM-600 Satellite Modem Front Panel Operation Revision 7 MN/CDM600.IOM The behavior of the front panel LEDs is described below in Table 6-1. Table 6-1.
CDM-600 Satellite Modem Front Panel Operation Revision 7 MN/CDM600.IOM The keypad is shown in Figure 6-2: Figure 6-2. Keypad The function of these keys is as follows: ENTER CLEAR Left, Right [←], [→] Up, Down [↑], [↓] IMPORTANT This key is used to select a displayed function or to execute a modem configuration change. This key is used to back out of a selection or to cancel a configuration change which has not been executed using [ENTER].
CDM-600 Satellite Modem Front Panel Operation SELECT CONFIGURE TEST INFORMATION MONITOR STORE/LOAD UTILITY ODU FAST Revision 7 MN/CDM600.
CDM-600 Satellite Modem Front Panel Operation 6.2 Revision 7 MN/CDM600.IOM Opening Screen This screen is displayed whenever power is first applied to the unit: COMTECH CDM-600 TURBO: TPC/LDPC OPEN NETWORK MODEM S/W VER 2.0.1 For units manufacured after February 2005 with the extended IF bandwidth feature: COMTECH CDM-600(E) TURBO: TPC/LDPC OPEN NETWORK MODEM S/W VER 2.0.1 Press any key to go to the Main Menu screen. (Note: a REF WARMING message may be seen at this point - see Section 6.3.1.8.) 6.
CDM-600 Satellite Modem Front Panel Operation 6.3.1 Revision 7 MN/CDM600.IOM CONFIG CONFIG: ALL MODE TX RX CLOCKS D&I EDMAC MISC REMOTE MASK IMPED STATS The sub-branches available are: ALL Permits the user to completely configure the unit, being prompted, step by step, to make choices, or edit data. This is highly recommended for new users, as it will clearly lead the user through all the configuration parameters. Permits the user to select Frame Type and Data Format for TX and RX.
CDM-600 Satellite Modem Front Panel Operation 6.3.1.1 Revision 7 MN/CDM600.IOM CONFIG: ALL ALL = START (STOP, START) This menu permits the user to configure the unit, in a step-by-step process by viewing each menu in succession. Use the [←] [→] [↑] and [↓] arrow keys to select and edit the various parameters. Press ENTER to continue through all the configuration. Press CLEAR to discontinue. 6.3.1.2 IMPORTANT CONFIG: MODE The MODE is a key parameter when configuring the modem.
CDM-600 Satellite Modem Front Panel Operation Revision 7 MN/CDM600.IOM The second option is the Framing type. The TX options are: NONE IBS (FAST option) IDR (FAST option) DROP (FAST option) EDMAC D&I++ (FAST option) (Ver 1.5.0 or greater) ESC++ (Ver 2.0.1 or greater) 6.3.1.3 The RX options are: NONE IBS (FAST option) IDR (FAST option) INSERT (FAST option) EDMAC D&I++ (FAST option) (Ver 1.5.0 or greater) ESC++ (Ver 2.0.1 or greater) CONFIG: TX TX-IF: POWER ENCODER MOD DATA SCRAMBLER DATA=20000.
CDM-600 Satellite Modem Front Panel Operation Revision 7 MN/CDM600.IOM Select each digit of the TX frequency to be edited using the [←] [→] arrow keys. Edit the value of the digit using the [↑] [↓] arrow keys. When editing is complete, press ENTER. Note that the range is from 52 to 88 MHz, and 104 to 176 MHz. The resolution is 100Hz. For units manufacured after February 2005, and which display CDM-600(E) on the opening menu, the range of IF frequencies has been extended to 50 - 90 MHz, and 100 180 MHz.
CDM-600 Satellite Modem Front Panel Operation Revision 7 MN/CDM600.IOM If ALARM ACTION is selected, the following menu will be displayed: MAX TX PWR ACTION = NONE (NONE, TX-ALM) REM DEMOD UNLOCK ACT = NOM-PWR(NOM, MAX) Select the action that will occur if the AUPC causes the maximum output power level to be reached, either NONE or TX ALARM. Select the action that will occur if the remote demod is unlocked.
CDM-600 Satellite Modem Front Panel Operation Revision 7 MN/CDM600.IOM CONFIG: TX: ENCODER: REED-SOLOMON ON REED-SOLOMON ENCODING = ON(200/180) Use the [↑] [↓] arrow keys to select one of the listed parameters, and press ENTER. Selections depend on the Framing mode.
CDM-600 Satellite Modem Front Panel Operation Revision 7 MN/CDM600.IOM CONFIG: TX: MODULATION MODULATION= QPSK (B,Q,OQ-PSK) FEC RATE = 1/2 (1/2,3/4,7/8) Select one of the parameters using the [←] [→] arrow keys, and then edit using the [↑] [↓] arrow keys. Edit the Modulation type and the FEC rate.
CDM-600 Satellite Modem Front Panel Operation Revision 7 MN/CDM600.IOM CONFIG: TX: DATA TX DATA RATE = 01544.000 kbps DATA INVERT = OFF (ON,OFF) The top line permits the data rate to be edited. Select the digit of Transmit Data Rate to be edited using the [←] [→] arrow keys. The value of the digit is changed using the [↑] [↓] arrow keys. Press ENTER. NOTE: The minimum and maximum data rates are dependent on Modulation type and FEC encoder Rate.
CDM-600 Satellite Modem Front Panel Operation 6.3.1.4 Revision 7 MN/CDM600.IOM CONFIG: RX RX-IF DECODER DEMOD DATA DESCRAM EbNo DATA=00064.000kbps SYMBOL=00037.333ksym The sub-branches available are: CONFIG: RX: RX-IF ACQUISITION SWEEP RANGE = +/- 32 kHz RX FREQ=070.0000 MHz SPECTRUM INVERT=OFF Edit the Acquisition Sweep Range of the demodulator. The value of the digit is changed using the [↑] [↓] arrow keys. Press ENTER.
CDM-600 Satellite Modem Front Panel Operation Revision 7 MN/CDM600.IOM CONFIG: RX: DECODER DECODER = VIT NONE,VIT,SEQ,TCM,TPC,LDPC) REED-SOLOMON = OFF (ON,OFF) Select the parameter to edit using the [←] [→] arrow keys. The Decoder options are shown in the parentheses. Select using the [↑] [↓] arrow keys, then press ENTER.
CDM-600 Satellite Modem Front Panel Operation Revision 7 MN/CDM600.IOM CONFIG: RX: DECODER: REED-SOLOMON ON REED-SOLOMON DECODING = ON(200/180) Use the [↑] [↓] arrow keys to select one of the listed parameters, and press ENTER. Selections depend on the Framing mode.
CDM-600 Satellite Modem Front Panel Operation Revision 7 MN/CDM600.IOM CONFIG: RX: DEMODULATION DEMODULATION = QPSK(B,Q,OQ,8PSK,16QAM) FEC RATE = 1/2 (1/2,3/4,7/8) Select one of the parameters using the [←] [→] arrow keys, and then edit using the [↑] [↓] arrow keys. Edit the Demodulation type and the FEC rate.
CDM-600 Satellite Modem Front Panel Operation Revision 7 MN/CDM600.IOM NOTE: The minimum and maximum data rates are dependent on Demodulation type and FEC decoder Rate. If the user changes the Modulation or FEC, and the data rate becomes invalid, the Data Rate will be adjusted automatically. The upper range of data rate will be dictated by the FAST option installed. When Insert Framing or the G.703 interface type is used the [↑] [↓]arrow keys will scroll through the available data rates.
CDM-600 Satellite Modem Front Panel Operation Revision 7 MN/CDM600.IOM CONFIG: RX: EbNo RECEIVE EbNo ALARM POINT = 02.0 dB Select the digit of the Alarm point to be edited using the [←] [→] arrow keys. Edit the value of the digit using the [↑] [↓] arrow keys. Press ENTER. The range of values is from 00.1 to 16.0 dB. The user may select a value here, and if the Eb/No falls below this value, a receive traffic fault will be generated. 6.3.1.
CDM-600 Satellite Modem Front Panel Operation Revision 7 MN/CDM600.IOM CONFIG:CLOCKS: RX BUFFER/CLOCK CLK= RX-SAT (RX-SAT,TX-TERR,EXT-CLK,INS) BUFFER-SIZE = 00016bytes(00002ms) CENTER Use the [←] [→] arrow keys to select one of the three parameters on the screen to edit. Edit the RX clock options using the [↑] [↓] arrow keys, then press ENTER RX-SAT TX-TERR EXT-CLK INS Sets the Receive buffer clock source to the satellite clock (The receive buffer will be bypassed.
CDM-600 Satellite Modem Front Panel Operation Revision 7 MN/CDM600.IOM If CENTER is selected, the following sub-menu is displayed: CONFIG: CLOCKS: RX BUFFER/CLOCK: CENTER PRESS ENTER TO CENTER THE BUFFER OTHERWISE, PRESS CLEAR Follow the instructions on the screen. CONFIG: CLOCKS: EXT-BASEBAND-CLOCK EXTERNAL BASEBAND CLOCK = 02048.000 kHz TYPE = UNBAL (UNBAL,BAL) To edit the EXTERNAL BASEBAND CLOCK, select the digit to be edited using the [←] [→] arrow keys.
CDM-600 Satellite Modem Front Panel Operation 6.3.1.6 Revision 7 MN/CDM600.IOM CONFIG: DROP & INSERT Drop and Insert is discussed in the Chapter “Clock modes and Drop and Insert (D&I)” later in this manual. IMPORTANT DRP-TYPE= T1-D4 INS-TYPE= T1-D4 CHAN/TS CHAN/TS LOOP=Y (Y/N) Using the [←] [→] arrow keys, select one of the five parameters on the screen. Note that Drop and Insert operation is a FAST option.
CDM-600 Satellite Modem Front Panel Operation Revision 7 MN/CDM600.IOM CONFIG: DROP & INSERT: INSERT CHANNEL TIMESLOTS INS-CH: 1 TS: 01 2 02 3 03 4 04 Select the Time-slot to edit using the [←] [→] arrow keys and edit the value using the [↑] [↓]arrow keys, then press ENTER. The number of Channels and Time-slots shown depends on the data rate. If the data rate is 1920 kbps, then only the E1 formats are available, and the CHAN/TS menus are disabled.
CDM-600 Satellite Modem Front Panel Operation Revision 7 MN/CDM600.IOM CONFIG: MISC: G.703 CODE Tx G703/DDO CODE = AMI Rx G703/IDI CODE = AMI (AMI,B8ZS) (AMI,B8ZS) Parameters may only be edited if the Interface Type is G.703. Use the [←] [→] arrow keys to select the parameter to edit. Select either appropriate G.703 code using the [↑] [↓] arrow keys, then press ENTER. Note that the choices displayed here will depend on the G.703 interface type, which has been selected.
CDM-600 Satellite Modem Front Panel Operation Revision 7 MN/CDM600.IOM CONFIG: MISC: HIGH-RATE-ESC HIGH-RATE-ESC = OFF (ON,OFF) BAUDRATE = 9600 PARITY:DATA:STOP = N81 The ESC type defined here depends on the framing type selected under CONFIG, MODE. The two options are either High-Rate IBS ESC, or ESC++ For units with Firmware Version: 1.3.1 or greater: The High Rate IBS (Engineering Service Channel) is available as a FAST option in conjunction with IBS framing.
CDM-600 Satellite Modem Front Panel Operation Revision 7 MN/CDM600.IOM If the Warm-up Delay is enabled, when the modem is powered up, a Warm-Up Delay Countdown will be activated, during which the TX is suppressed. The Countdown of the remaining Warm-up Delay is displayed on the front panel, for example: COMTECH CDM-600 OPEN NETWORK MODEM HIGH-STABILITY REF WARMING UP: 045 SEC If necessary, this Warm-up period can be by-passed by pressing the CLEAR key. 6.3.1.
CDM-600 Satellite Modem Front Panel Operation Revision 7 MN/CDM600.IOM CONFIG: REMOTE CONTROL: CHAR FORMAT PARITY:DATA-BITS:STOP-BITS = N81 (N81,E72,O72) Edit the I/O character format using the [↑] [↓] arrow keys. The options are: N81 E72 O72 6.3.1.
CDM-600 Satellite Modem Front Panel Operation Revision 7 MN/CDM600.IOM CONFIG: MASK: BUFFER SLIP BUFFER SLIP= ACTIVE (ACTIVE,MASK) Select either ACTIVE or MASKED, using the [↑] [↓] arrow keys, then press ENTER. • If the user selects ACTIVE, then a Buffer Slip fault will be generated whenever the receive circuitry senses that the buffer has either underflowed, or overflowed. • If the user selects MASKED, no alarm will be generated.
CDM-600 Satellite Modem Front Panel Operation Revision 7 MN/CDM600.IOM backward alarm inputs are to be used. An activated alarm may respond to a hardware input at P5A (H/W) or be software controlled by a receive fault on the modem (S/W). CONFIG: MASK: SATELLITE ALARMS: RX PROCESS ALARMS RECEIVED FROM SATELLITE BWA1=N, BWA2=N, BWA3=N, BWA4=N Select which Receive IDR backward alarms are to be monitored.
CDM-600 Satellite Modem Front Panel Operation 6.3.2 Revision 7 MN/CDM600.IOM TEST MODEM TEST MODE = NORMAL (NORM,TX-CW,TX-1/0,IF↓,RF↓,DIG↓,I/O↓) Select TEST Mode or Normal Operation from the parameters shown in the parentheses using the [↑] [↓] arrow keys, then press ENTER. This sub-menu permits the user to select the following test modes: NORM (Normal) This clears any test modes or loopbacks, and places the unit back into an operational state.
CDM-600 Satellite Modem Front Panel Operation Revision 7 MN/CDM600.IOM Figure 6-4.
CDM-600 Satellite Modem Front Panel Operation 6.3.3 Revision 7 MN/CDM600.IOM INFORMATION INFO: ALL ID FORMAT TX RX CLOCKS DROP INSERT REMOTE ALARM-MASK EDMAC MISC Select information to view using the [←][→] arrow keys, then press ENTER. Note: INFO screens display information on the current configuration of the modem without risking inadvertent changes.
CDM-600 Satellite Modem Front Panel Operation Revision 7 MN/CDM600.IOM INFO: TX TX:ON 070.00000MHz Z=50 PWR=-20.0 TSI=N VIT+RS:220/200 00604.000 QPSK 7/8 SCRM A sample display of TX Info is shown. The information displayed here is as follows: Top Line: TX carrier TX Frequency Impedance Power TSI Bottom line: Encoder Data Rate Modulation FEC rate Scrambler ON, OFF, or RTI xxxxx.
CDM-600 Satellite Modem Front Panel Operation Revision 7 MN/CDM600.IOM INFO: CLOCKS CLOCKS:TX=INT(SCT)RX=EXT-CLK REF=INT10 BUFFER-SIZE=00016 CLK=02048U The TX Clock, RX Clock and Buffer information is displayed. Note: The Clock (CLK) information is shown only if Rx Clock is set to EXT-CLK. INFO: EDMAC EDMAC FUNCTION= ON EDMAC MODE= MASTER EDMAC ADDR= 0020 This screen shows if EDMAC is enabled or not. If it is enabled, the EDMAC Mode and Address are shown.
CDM-600 Satellite Modem Front Panel Operation Revision 7 MN/CDM600.IOM INFO: REMOTE REMOTE-CONTROL= LOCAL INTERFACE = RS-232 ADDRESS= 0000 9600 BAUD N81 This screen shows if the unit is in Local or Remote mode, provides the details of the electrical interface type selected, the unit’s address and the baud rate selected. Pressing ENTER takes the user back to the previous menu.
CDM-600 Satellite Modem Front Panel Operation 6.3.4 Revision 7 MN/CDM600.IOM MONITOR MONITOR: LIVE-ALARMS STORED-EVENTS STATISTICS RX-PARAMS AUPC-PARAMS Select the parameter to Monitor using the [←][→] arrow keys, then press ENTER. MONITOR: LIVE-ALARMS LIVE ALARMS UNIT= NONE RECV=DEMOD LOCK NET= NONE XMT= NONE An example of an Alarm screen is shown.
CDM-600 Satellite Modem Front Panel Operation Unit Network 6.3.4.1 Revision 7 MN/CDM600.IOM LOSE TxFRM: Loss of Tx frame occurs in Drop & Insert operation, when the incoming T1 or E1 frame cannot be found by the modem. BER >10E-3: This error rate monitor is enabled for IBS and IDR framing. LOSE TxMUL: Loss of Tx multiframe occurs in E1-CAS D&I operation, when the multiframe marker for CAS signaling data cannot be found.
CDM-600 Satellite Modem Front Panel Operation 6.3.4.2 Revision 7 MN/CDM600.IOM MONITOR: STATISTICS STATISTICS: STA114: 16.0,16.0,9.0,9.0 09/12/99 14:48:06 CLEAR ALL: NO (N/Y) The user may scroll backwards or forwards through the entries in the statistics log, using the [↑] [↓] arrow keys. Pressing ENTER or CLEAR will take the user back to the previous menu. The top line displays the log entry number and event log.
CDM-600 Satellite Modem Front Panel Operation 6.3.4.3 Revision 7 MN/CDM600.IOM MONITOR: RX PARAMETERS RX=PARAMETERS: EbNo=11.4dB ∆F=+11.7kHz BER=0.0E-9 BUFFER=51% RX-LEVEL=-43dBm If the demodulator is locked, this screen shows the following: 6.3.4.4 Eb/No This shows the value of Eb/No calculated by the demodulator. The value referred to here is the energy per information bit (Ebi), divided by the noise spectral density (No).
CDM-600 Satellite Modem Front Panel Operation 6.3.5.1 Revision 7 MN/CDM600.IOM STORE/LOAD: OVERRIDE CONFIGURATION CONFIGURATION: xx OVERRIDE: NO (YES/NO) Select override using the [↑] [↓] arrow keys, then press ENTER. 6.3.6 UTILITIES UTILITIES: SET-RTC DISPLAY-BRIGHTNESS LAMP 1:1-MANUAL-SWITCH EDIT-CIRCUIT-ID Select the Utilities parameter using the [←][→] arrow keys, then press ENTER. 6.3.6.
CDM-600 Satellite Modem Front Panel Operation 6.3.6.3 Revision 7 MN/CDM600.IOM UTILITIES: LAMP FRONT PANEL LAMP TEST: XXXXXXX Select enable or disable, using the [↑][↓] arrow keys, then press ENTER. This will test all of the LEDs on the front panel then resume normal operations. 6.3.6.
CDM-600 Satellite Modem Front Panel Operation 6.3.7 Revision 7 MN/CDM600.IOM ODU This permits the CDM-600 to interface directly with a Comtech RF Transceiver (Outdoor Unit, or ODU. This is accomplished using a low-speed, half-duplex FSK link on the Rx IF port, with a carrier frequency around 2.7 MHz. ODU CONTROL=DISABLE (DISABLE, ENABLE) SYSTEM TYPE=STANDALONE (STANDALONE, 1:1) 6.3.8 FAST FAST OPTIONS: SET VIEW MOTHERBOARD S/N 123456789 HW REV 1.
Chapter 7. FORWARD ERROR CORRECTION OPTIONS 7.1 Introduction As standard, the CDM-600 Modem is equipped with four Forward Error Correction encoders/decoders – Viterbi, Sequential, concatenated Reed-Solomon and Trellis (which is available with the 8-PSK FAST option). The constraint lengths and encoding polynomials are not only Open Network compatible, but are also Closed Network compatible with the vast majority of existing modems from other manufacturers.
CDM-600 Satellite Modem Forward Error Correction Options Revision 7 MN/CDM600.IOM IESS 308/309 standards for Viterbi decoding with a constraint length of seven. This is a de facto standard, even in a closed network environment, which means almost guaranteed interoperability with other manufacturer’s equipment. It provides very useful levels of coding gain, and its short decoding delay and error-burst characteristics make it particularly suitable for low data rate coded voice applications.
CDM-600 Satellite Modem Forward Error Correction Options Revision 7 MN/CDM600.IOM lower data rates there are sufficient number of computational cycles per input symbol to permit the decoding process to perform optimally. However, as the data rate increases, there are fewer cycles available, leading to a reduction in coding gain. This is clearly illustrated in the performance curves that follow. For data rates above ~1 Mbps, Viterbi should be considered the better alternative.
CDM-600 Satellite Modem Forward Error Correction Options Revision 7 MN/CDM600.IOM Closed Network Modes A 220,200 code is used in transparent closed network modes, and a 200,180 code is used in framed (EDMAC) modes. (220,200 means that data is put into blocks of 220 bytes, of which 200 bytes are data, and 20 bytes are FEC overhead.) These two codes were chosen because they fit well into Comtech EF Data’s clock generation scheme, and they have almost identical coding gain.
CDM-600 Satellite Modem Forward Error Correction Options 7.5 Revision 7 MN/CDM600.IOM Trellis Coding (FAST Option) In the other FEC methods described here, the processes of coding and modulation are independent - the FEC codec has no knowledge of, or interaction with the modulator. However, there are schemes in which the coding and modulation are combined together, where the encoder places FEC symbols in a precise manner into the signal constellation.
CDM-600 Satellite Modem Forward Error Correction Options 7.6 Revision 7 MN/CDM600.IOM Turbo Product Codec (Hardware Option) Turbo coding is an FEC technique developed within the last few years, which delivers significant performance improvements compared to more traditional techniques. Two general classes of Turbo Codes have been developed, Turbo Convolutional Codes (TCC), and Turbo Product Codes (TPC, a block coding technique). Comtech EF Data has chosen to implement an FEC codec based on TPC.
CDM-600 Satellite Modem Forward Error Correction Options Revision 7 MN/CDM600.IOM it remained clear that the Shannon Limit was still an elusive target. Berrou’s work on Turbo Codes showed, through the use of an ingeniously simple approach (multiple, or iterative decoding passes) that it is possible to achieve performance close to the Shannon Limit.
CDM-600 Satellite Modem Forward Error Correction Options Revision 7 MN/CDM600.IOM It is clear that in order to provide the best possible performance over the range of code rates from 1/2 to 0.95, both an LDPC and a TPC codec need to be offered. In order to meet this requirement, Comtech EF Data has developed a combination LDPC/TPC Codec module that can be added to the CDM-600 Modem, and which provides the following operating modes: Table 7-5.
CDM-600 Satellite Modem Forward Error Correction Options Revision 7 MN/CDM600.IOM This new LDPC/TPC codec module may be installed in any existing CDM-600, as a simple field upgrade, or already installed in new modems ordered from the factory. It requires Firmware Version 1.6.0 (or higher) to be installed. Please contact the Sales Department at Comtech EF Data for pricing and delivery information.
CDM-600 Satellite Modem Forward Error Correction Options Revision 7 MN/CDM600.IOM Comparison of all Comtech EF Data TPC and LDPC Modes (CDM-600 with LDPC/TPC Codec and Firmware Version 1.6.0) Eb/No at BER = 10-6 (typical) Eb/No at BER = 10-8 (typical) Spectral Efficiency (bps per Hertz) Symbol Rate Occupied * Bandwidth for 1 Mbps Carrier QPSK Rate 1/2 Viterbi * 5.5 dB 6.8 dB 1.00 bps/Hz 1.0 x bit rate 1190 kHz BPSK Rate 1/2 LDPC 1.7 dB 1.9 dB 0.50 bps/Hz 2.
CDM-600 Satellite Modem Forward Error Correction Options Revision 7 MN/CDM600.IOM Table 7-7. TPC and LDPC Summary FOR Exceptionally good BER performance - significant improvement compared with every other FEC method in use today Most modes have no pronounced threshold effect - fails gracefully AGAINST Nothing! Exceptional bandwidth efficiency Coding gain independent of data rate (in this implementation) Low decoding delay for TPC Easy field upgrade in CDM-600 7.
CDM-600 Satellite Modem Forward Error Correction Options Revision 7 MN/CDM600.IOM NOTE: Whenever uncoded operation is selected, the modem offers the choice between enabling and disabling the differential encoder/decoder appropriate for the modulation type. The second problem inherent in PSK demodulators is that of ‘data false locking’. In order to accomplish the task of carrier recovery, the demodulator must use a non-linear process.
CDM-600 Satellite Modem Forward Error Correction Options Revision 7 MN/CDM600.IOM Eb/No in dB 1 2 3 4 5 6 7 8 9 10 11 12 1E-1 Uncoded BPSK/QPSK Viterbi Decoding 1E-2 Typical Performance 1E-3 1E-4 1E-5 1E-6 Specification limit, Rate 7/8 Coding 1E-7 1E-8 Specification limit, Rate 3/4 Coding Specification limit Rate 1/2 Coding 1E-9 BER 1 2 3 4 5 6 7 Figure 7-1.
CDM-600 Satellite Modem Forward Error Correction Options Revision 7 MN/CDM600.IOM Eb/No in dB 1 2 3 4 5 6 7 8 9 10 11 12 1E-1 Sequential Decoding 64 kbps Uncoded BPSK/QPSK 1E-2 Typical Performance 1E-3 1E-4 1E-5 1E-6 Specification limit, Rate 7/8 Coding 1E-7 1E-8 Specification limit Rate 1/2 Coding 1E-9 BER 1 2 3 4 Specification limit, Rate 3/4 Coding 5 6 7 8 Figure 7-2.
CDM-600 Satellite Modem Forward Error Correction Options Revision 7 MN/CDM600.IOM Eb/No in dB 1 2 3 4 5 6 7 8 9 10 11 12 1E-1 Sequential Decoding 1024 kbps Uncoded BPSK/QPSK 1E-2 1E-3 Typical Performance 1E-4 1E-5 1E-6 Specification limit, Rate 7/8 Coding 1E-7 1E-8 Specification limit Rate 1/2 Coding 1E-9 BER 1 2 3 4 5 Specification limit, Rate 3/4 Coding 6 7 8 9 Figure 7-3.
CDM-600 Satellite Modem Forward Error Correction Options Revision 7 MN/CDM600.IOM Eb/No in dB 1 2 3 4 5 6 7 8 9 10 11 12 1E-1 Sequential Decoding 2048 kbps Uncoded BPSK/QPSK 1E-2 1E-3 1E-4 1E-5 1E-6 Typical performance, Rate 7/8 Coding 1E-7 1E-8 Typical performance, Rate 3/4 Coding Typical performance, Rate 1/2 Coding 1E-9 BER 1 2 3 4 5 6 7 8 Figure 7-4.
CDM-600 Satellite Modem Forward Error Correction Options Revision 7 MN/CDM600.
CDM-600 Satellite Modem Forward Error Correction Options Revision 7 MN/CDM600.
CDM-600 Satellite Modem Forward Error Correction Options Revision 7 MN/CDM600.IOM Eb/No in dB 1 2 3 4 5 6 7 8 9 10 11 12 1E-1 8-PSK/TCM Rate 2/3 Decoding, with and without 219, 201 RS Outer Code Uncoded BPSK/QPSK 1E-2 Performance with CDM-600 Firmware Version 1.1.5 (or higher) 1E-3 1E-4 Typical Performance 1E-5 1E-6 1E-7 1E-8 Specification limit Rate 2/3 Coding and 219, 201 RS Outer Code 1E-9 BER 1 2 3 4 5 Specification limit, Rate 2/3 Coding 6 7 8 9 10 11 Figure 7-7.
CDM-600 Satellite Modem Forward Error Correction Options Revision 7 MN/CDM600.IOM Eb/No in dB 1 2 3 4 5 6 7 8 9 10 11 12 1E-1 Comtech Turbo Product Codec Rate 3/4 QPSK/OQPSK, 8-PSK and 16-QAM Uncoded BPSK/QPSK 1E-2 Performance with CDM-600 Firmware Version 1.1.5 (or higher ) Uncoded 16-QAM 1E-3 Spec limit Rate 3/4 8-PSK Uncoded 8-PSK 1E-4 Spec limit Rate 3/4 QPSK/OQPSK 1E-5 1E-6 1E-7 Spec limit Rate 3/4 16-QAM 1E-8 Typical performance 1E-9 BER 1 2 3 4 5 6 7 8 9 Figure 7-8.
CDM-600 Satellite Modem Forward Error Correction Options Revision 7 MN/CDM600.IOM Eb/No in dB 1 2 3 4 5 6 7 8 9 10 11 12 1E-1 Comtech Turbo Product Codec Rate 7/8 QPSK/OQPSK, 8-PSK and 16-QAM Uncoded BPSK/QPSK 1E-2 Performance with CDM-600 Firmware Version 1.1.5 (or higher ) Uncoded 16-QAM 1E-3 Spec limit Rate 7/8 8-PSK Spec limit Rate 7/8 QPSK/OQPSK Uncoded 8-PSK 1E-4 1E-5 1E-6 1E-7 Spec limit Rate 7/8 16-QAM 1E-8 Typical performance 1E-9 BER 1 2 3 4 5 6 7 8 9 Figure 7-9.
CDM-600 Satellite Modem Forward Error Correction Options Revision 7 MN/CDM600.IOM Eb/No in dB 1 2 3 4 5 6 7 8 9 10 11 12 1E-1 Comtech Turbo Product Codec Rate 1/2 QPSK/OQPSK Rate 0.95 QPSK/OQPSK and 8-PSK Uncoded BPSK/QPSK 1E-2 Performance with CDM-600 Firmware Version 1.1.5 (or higher) Uncoded 8-PSK 1E-3 1E-4 Spec limit Rate 0.95 QPSK/OQPSK Spec limit Rate 1/2 QPSK/OQPSK 1E-5 1E-6 1E-7 Spec limit Rate 0.
CDM-600 Satellite Modem Forward Error Correction Options Revision 7 MN/CDM600.IOM Eb/No in dB 1 2 3 4 5 6 7 8 9 10 11 12 1E-1 Comtech Turbo Product Codec Rate 21/44 BPSK Rate 5/16 BPSK 1E-2 1E-3 Spec limit Rate 5/16 BPSK Spec limit Rate 21/44 BPSK 1E-4 Uncoded BPSK/QPSK 1E-5 1E-6 1E-7 1E-8 Typical performance 1E-9 BER 1 2 3 4 5 6 7 8 9 Figure 7-11.
CDM-600 Satellite Modem Forward Error Correction Options Revision 7 MN/CDM600.IOM Eb/No in dB 1 2 3 4 5 6 7 8 9 10 11 12 1E-1 16-QAM Viterbi, Rate 3/4 and Rate 7/8 with 220,200 RS Outer Code 1E-2 Uncoded BPSK/QPSK Uncoded 16-QAM 1E-3 1E-4 Specification limit Rate 7/8 Viterbi and 220,200 RS Outer Code 1E-5 Typical Performance 1E-6 1E-7 1E-8 Specification limit Rate 3/4 Viterbi and 220,200 RS Outer Code 1E-9 BER 1 2 3 4 5 6 7 8 9 10 11 12 Figure 7-12.
CDM-600 Satellite Modem Forward Error Correction Options Revision 7 MN/CDM600.IOM Eb/No in dB 1 2 3 4 5 6 7 8 9 10 11 12 1E-1 1E-2 Differential Encoding No FEC, no scrambling Uncoded BPSK/QPSK 1E-3 1E-4 1E-5 1E-6 1E-7 1E-8 1E-9 BER 1 2 3 4 5 6 7 8 9 10 Figure 7-13.
CDM-600 Satellite Modem Forward Error Correction Options 1 2 Revision 7 MN/CDM600.IOM 3 4 5 6 7 8 9 10 Eb/No in dB 11 12 1E-1 1E-2 LDPC, BPSK, QPSK, (O)QPSK, Rate 1/2 Uncoded BPSK/QPSK/ OQPSK 1E-3 1E-4 Spec limit Rate 1/2 1E-5 BPSK/QPSK/OQPSK 1E-6 1E-7 Typical limit Rate 1/2 BPSK/QPSK/OQPSK 1E-8 1E-9 BER 1 2 3 4 5 6 7 8 Figure 7-14.
CDM-600 Satellite Modem Forward Error Correction Options Revision 7 MN/CDM600.IOM Eb/No in dB 1 2 3 4 5 6 7 8 9 10 11 12 1E-1 1E-2 LDPC Rate 2/3 QPSK/OQPSK/8-PSK/ 8-QAM Uncoded BPSK/QPSK/OQPSK 1E-3 Spec Limit QPSK/OQPSK Rate 2/3 Spec Limit 8-QAM Rate 2/3 Uncoded 8-PSK 1E-4 Typical Limit 8-QAM Rate 2/3 1E-5 1E-6 Spec Limit 8-PSK Rate 2/3 1E-7 1E-8 1E-9 Typical Limit QPSK/ OQPSK Rate 2/3 1 Typical Limit 8-PSK Rate 2/3 2 3 4 5 6 7 8 9 10 BER Figure 7-15.
CDM-600 Satellite Modem Forward Error Correction Options Revision 7 MN/CDM600.IOM Eb/No in dB 1 2 3 4 5 6 7 8 9 10 11 12 1E-1 LDPC, Rate 3/4 QPSK/OQPSK/ 8-QAM Uncoded BPSK/QPSK 1E-2 1E-3 Spec limit QPSK/OQPSK Rate 3/4 Spec limit 8-QAM Rate 3/4 Uncoded 8-PSK 1E-4 Typical limit 8-QAM Rate 3/4 1E-5 Typical limit QPSK/OQPSK Rate 3/4 1E-6 1E-7 1E-8 1E-9 BER 1 2 3 4 6 5 7 8 9 Figure 7-16.
CDM-600 Satellite Modem Forward Error Correction Options Revision 7 MN/CDM600.IOM Eb/No in dB 1 2 3 4 5 6 7 8 9 10 11 12 1E-1 LDPC Rate 3/4 8-PSK/16-QAM 1E-2 Uncoded 16-QAM Uncoded 8-PSK 1E-3 Spec limit 8-PSK Rate 3/4 1E-4 Spec limit 16-QAM Rate 3/4 1E-5 Tyical limit 8-PSK Rate 3/4 1E-6 Typical limit 16-QAM Rate 3/4 1E-7 1E-8 1E-9 BER 1 2 3 4 6 5 7 8 9 Figure 7-17.
CDM-600 Satellite Modem Forward Error Correction Options Revision 7 MN/CDM600.
Chapter 8. OFFSET QPSK OPERATION Offset QPSK modulation is a variation of normal QPSK, which is offered in the CDM600. Normal, bandlimited, QPSK produces an RF signal envelope that necessarily goes through a point of zero amplitude when the modulator transitions through non-adjacent phase states. This is not considered to be a problem in most communication systems, as long as the entire signal processing chain is linear.
CDM-600 Satellite Modem Offset QPSK Operation Revision 7 MN/CDM600.IOM The two consequences of this are: 1. Acquisition may be longer, especially at low data rates. 2. The acquisition threshold is higher than for normal QPSK, although the demodulator will maintain lock down to its normal levels. For Firmware Versions prior to 1.3.1, the acquisition thresholds are as follows: 7.0 dB Eb/No for Rate 1/2 5.2 dB Eb/No for Rate 3/4 4.8 dB Eb/No for Rate 7/8 4.
Chapter 9. OPEN NETWORK OPERATIONS 9.1 Introduction This section summarizes the functionality and specifications of the various Open Network operating modes (IDR, IBS and Drop and Insert). 9.2 IBS G.703 EIA-422, V.
CDM-600 Satellite Modem Open Network Operations 9.2.1 Revision 7 MN/CDM600.IOM IBS Clock/data recovery and De-jitter Performs clock and data recovery on the G.703 format. Clock de-jitter and data encoding/decoding is done as with the IDR configuration. 9.2.2 IBS Framing Multiplexes/demultiplexes the primary data in compliance with the standard IESS-309 overhead ratio of 1/15 (4 overhead bytes per 60 data bytes) and provides the rate exchanged transmit clock to the modulator portion of the base modem.
CDM-600 Satellite Modem Open Network Operations Revision 7 MN/CDM600.
CDM-600 Satellite Modem Open Network Operations 9.4 Revision 7 MN/CDM600.IOM IDR Primary Data Rates Supported G.703 1544 kbps SD, RD EIA-422 (Replaces 8K Overhead) 2048 kbps SD, RD V.
CDM-600 Satellite Modem Open Network Operations 9.4.1 Revision 7 MN/CDM600.IOM IDR Primary Data Interfaces When configured for IDR operation, the board performs these functions: • • Receives and performs clock and data recovery on incoming G.703 T1 and E1 pseudo-ternary data. Clock dejitter is performed per G.823 and G.824, and any data decoding (AMI, B8Z5, or HDB3) required per G.703 is also accomplished.
CDM-600 Satellite Modem Open Network Operations Revision 7 MN/CDM600.
Chapter 10. CLOCK MODES AND DROP AND INSERT (D&I) When dealing with satellite modems, the subject of clocking can be a complex issue. This section describes the various clocking options that are available with the CDM-600. There are two fundamentally different interfaces provided by the modem: 10.1 • Synchronous clock and data interfaces (EIA-422, V.35, etc) that permit great flexibility concerning the source and direction of clocks. These cause the most confusion. • G.
CDM-600 Satellite Modem Clock Modes and Drop and Insert (D&I) 10.1.2 Revision 7 MN/CDM600.IOM Tx Terrestrial In this mode, the modem expects to see the DTE provide the clock, so that it can phaselock its internal circuits. In this case, the modem does not provide any signal on ST, but instead requires a clock signal on Terminal Timing (TT), synchronous with the data. If no clock is present, an alarm will be generated and the modem will substitute its internal clock. G.
CDM-600 Satellite Modem Clock Modes and Drop and Insert (D&I) 10.2 Revision 7 MN/CDM600.IOM Receive Clocking There are three receive clocking modes in the CDM-600, plus an additional setting used for Drop and Insert only – see later section. 10.2.1 Buffer Disabled (RX Satellite) When the buffer is disabled, the receive clock (Receive Timing, or RT) is derived directly from the demodulator, and hence will be subject to plesiochronous and Doppler offsets. In certain instances, this may be acceptable.
CDM-600 Satellite Modem Clock Modes and Drop and Insert (D&I) Revision 7 MN/CDM600.IOM Figure 10-1.
CDM-600 Satellite Modem Clock Modes and Drop and Insert (D&I) Revision 7 MN/CDM600.IOM Figure 10-2.
CDM-600 Satellite Modem Clock Modes and Drop and Insert (D&I) 10.4 Revision 7 MN/CDM600.IOM Drop and Insert The Drop and Insert (D&I) multiplexer works in conjunction with the G.703 interfaces to enable the modem to transmit or receive fractional parts of a T1 or E1 data stream. The D&I option provides fully compliant baseband processing in accordance with Intelsat IESS-309 for the terrestrial information rate of 2048 kbps (E1) and 1544 kbps (T1), using G.703 interfaces.
CDM-600 Satellite Modem Clock Modes and Drop and Insert (D&I) 10.5 Revision 7 MN/CDM600.IOM Frame Formats The E1 and T1 frame formats that are supported are shown in Figure 10-3: E1-CCS (Common Channel Signalling) 2048 kbps E1 Frame Time Slot No.
CDM-600 Satellite Modem Clock Modes and Drop and Insert (D&I) 10.6 Revision 7 MN/CDM600.IOM Time Slot Selection Selection of the transmit and receive data rates may be made in certain 64 kbps increments and may be independent of each other. The actual satellite rates for open network D&I are 16/15 of the transmit or receive data rate to include IBS overhead per IESS-309, although this is transparent to the user. For E1, the user can select any time slot (TS) from 1 to 31.
CDM-600 Satellite Modem Clock Modes and Drop and Insert (D&I) 10.7 Revision 7 MN/CDM600.IOM Drop and Insert Clocking The general arrangement for Drop and Insert clocking in the CDM-600 is shown below: Figure 10-4 Drop and Insert Clocking Note that are two inputs and two outputs shown for Drop and Insert Operation.
CDM-600 Satellite Modem Clock Modes and Drop and Insert (D&I) 10.8 Revision 7 MN/CDM600.IOM Rx Buffer Clock = Insert (D&I only) The E1 or T1 clock recovery from the IDI G.703 port serves as the Rx Buffer reference. In addition, the recovered data is the E1/T1 input to the Insert Mux. If the Rx G.703 recovery circuit detects no activity at IDI input, or cannot detect the expected frame format, Buffer Clock = Rx Satellite will be chosen as a fall-back.
CDM-600 Satellite Modem Clock Modes and Drop and Insert (D&I) Revision 7 MN/CDM600.IOM MODEM MODEM MODEM IDI DDI DDO IDI Terrestrial Trunk IDO Multiple Modem Drop & Insert Application: This application shows how the loop is extended to one or more additional modems. DDO- IDI connection may be made internally using Loop = Y under D&I menu. Figure 10-6.
CDM-600 Satellite Modem Clock Modes and Drop and Insert (D&I) Revision 7 MN/CDM600.IOM This page is intentionally left blank.
Chapter 11. EDMAC CHANNEL 11.1 Theory Of Operation As explained earlier, EDMAC is an acronym for Embedded Distant-end Monitor And Control. This is a feature that permits the user to access the M&C features of modems which are at the distant-end of a satellite link. This is accomplished by adding extra information to the user’s data, but in a manner which is completely transparent to the user.
CDM-600 Satellite Modem EDMAC Channel Revision 7 MN/CDM600.IOM known state. In the receiver, having synchronized to the frame, the de-scrambler can begin its processing at exactly the right time. This method does not multiply errors, and therefore has a clear advantage over V.35 scrambling. This is fortunate, as there is a penalty to be paid for adding the framing. By adding the extra 5% to the transmitted data rate, the effective Eb/No seen by the user will degrade by a factor of 10log(1.05), or 0.
CDM-600 Satellite Modem EDMAC Channel Revision 7 MN/CDM600.IOM Apart from the round-trip satellite delay, the M&C Computer does not see any difference between local and distant-end units - it sends out a packet, addressed to a particular unit, and gets back a response. It can be seen that the EDMAC Master simply acts as forwarding service, in a manner which is completely transparent. This approach does not require any additional cabling - connection is made using the normal M&C remote port.
CDM-600 Satellite Modem EDMAC Channel 11.4 Revision 7 MN/CDM600.IOM Drop & Insert ++ A new variation of EDMAC is available with D&I++ framing. With this, each frame contains 2944 bits, with 64 overhead bits and 2880 user data bits. The portion of the overhead used for the EDMAC link performs identically to that of the EDMAC frame, but because D&I++ uses a smaller overhead, the two modes are not compatible with each other.
Chapter 12. AUTOMATIC UPLINK POWER CONTROL 12.1 Introduction Automatic Uplink Power Control (AUPC) is a feature whereby a local modem is permitted to adjust its own output power level in order to attempt to maintain the Eb/No at the remote modem. The user MUST obtain permission from the Satellite Operator to use this feature. WARNING Improper use of this feature could result in a transmitting terminal seriously exceeding its allocated flux density on the Operator’s satellite.
CDM-600 Satellite Modem Automatic Uplink Power Control (AUPC) 12.2 Revision 7 MN/CDM600.IOM Setting AUPC Parameters 1) The user, under the menu (CONFIG, MODE) first ensures that EDMAC is selected. EDMAC may be selected as IDLE, or the unit may be defined as an EDMAC Master or Slave. The important consideration is that EDMAC framing should be enabled. 2) The user should verify that the remote modem also has EDMAC framing enabled.
CDM-600 Satellite Modem Automatic Uplink Power Control (AUPC) 12.2.3 Revision 7 MN/CDM600.IOM Alarm This parameter defines how the user wants the modem to act if, under AUPC control, the maximum power limit is reached. The two choices are: • NONE (no action) • TX ALARM (generate a TX alarm) The default setting is NONE. 12.2.4 Demod Unlock This defines the action the modem will take if the remote demodulator loses lock.
CDM-600 Satellite Modem Automatic Uplink Power Control (AUPC) 12.4 Revision 7 MN/CDM600.IOM Monitoring The remote demodulator’s value of Eb/No can be monitored at all times, either from the front panel (MONITOR, AUPC) or via the remote control interface. The resolution of the reading is 0.2 dB. For all values greater than or equal to 16 dB, the value 16.0 dB will be displayed. As long as framing is enabled, the value will still be available, even though AUPC may be disabled.
Chapter 13. ESC++ 13.1 Introduction The ESC++ mode of operation is a new, closed network frame structure which combines Automatic Uplink Power Control (AUPC) with a high speed asynchronous order-wire channel. The AUPC works identically to that offered with EDMAC and D&I++ framing, but is not compatible with either. This is because ESC++ framing uses a different overhead percentage than the other closed network framing modes. In order to use this feature, Firmware Version 2.0.
CDM-600 Satellite Modem ESC++ 13.3 Revision 7 MN/CDM600.IOM Available Baud Rates At the lowest data rates, the 11.76% overhead may not allow all baud rates. The following table shows available rates: Data rate 64 to 127.999 kbps 128 to 191.999 kbps 192 to 255.999 kbps 256 to 383.999 kbps 384 to 511.999 kbps 512 kbps and above 13.
Chapter 14. FLASH UPGRADING The CDM-600 eliminates the need for updating firmware by physically replacing EPROMs. Instead, the CDM-600 modem uses ‘flash memory’ technology internally, and new firmware can be uploaded to the unit from an external PC, as follows: Go to: www.comtechefdata.com Click on: downloads Click on: flash upgrades This makes software upgrading very simple, and updates can now be sent via the Internet, E-mail, or on disk.
CDM-600 Satellite Modem Flash Upgrading Revision 7 MN/CDM600.IOM Full on-line help is provided with 600Flash.exe, but if users experience a problem, or have a question, they should contact Comtech EF Data Customer Support department. WARNING The Remote Control port EIA-232 lines used for Flash upgrading also are connected to the Primary 25-pin data connector (P3B), and are used when 1:N Redundancy Switch is connected.
Chapter 15. SUMMARY OF SPECIFICATIONS 15.1 Modulator Modulation Symbol rate range Data rate range Operating modes Transmit filtering BPSK, QPSK, OQPSK, 8-PSK, 8-QAM and 16-QAM 4.8 ksps to 10.0 Msps See Section 14.9 Open Network, per Intelsat IESS-308/309/310/314 (IDR, IBS/SMS) E1/T1 Drop and Insert Transparent, Closed Network, IESS-315 (VSAT Turbo) Proprietary EDMAC framed mode: * 5% overhead - all modes except BPSK Turbo, Rate 1/2 OQPSK Turbo, and data rates < 2.048 Mbps * 1.
CDM-600 Satellite Modem Summary of Specifications Scrambling FEC Output frequency Harmonics/spurious Transmit on/off ratio Output phase noise Output power Power accuracy Output impedance Output connector Clocking options External TX Carrier Off Revision 7 MN/CDM600.IOM IDR Mode, no RS, - per ITU V.35 (Intelsat variant) IBS mode, no RS - per IESS-309, externally frame synchronized Transparent Closed Network mode, no R-S or Turbo coding - per ITU V.
CDM-600 Satellite Modem Remote Control 0.00 0.10 0.20 Revision 7 MN/CDM600.IOM 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 0 -5 -10 -15 1.30 1.40 Symbol Rate, Rs Comtech EF Data CDM-600 Transmit Power Spectral Density, referred to symbol rate -20 -25 -30 -35 Intelsat IESS 308/309 Limit -40 CDM-600 Modulator typically < -50 dB, and guaranteed to be < -45 dB at offsets > 0.75 Rs -45 -50 Intelsat IESS 308/309 Limit Spectral density, dB -55 15.
CDM-600 Satellite Modem Summary of Specifications VITERBI BER performance (met in the presence of two adjacent carriers, each 7 dB higher than the desired carrier) SEQUENTIAL @ 64 kbps BER (met in the presence of two adjacent carriers, each 7 dB higher than the desired carrier) SEQUENTIAL @ 1024 kbps BER (met in the presence of two adjacent carriers, each 7 dB higher than the desired carrier) VITERBI and RS 220,200 or 200,180 Outer Code BER (with two adjacent carriers, each 7 dB higher than the desired
CDM-600 Satellite Modem Remote Control TURBO PRODUCT CODEC BER Rate 1/2 QPSK Rate 21/44 BPSK Rate 5/16 BPSK BER (With two adjacent carriers, each 7 dB higher than the desired carrier) TURBO PRODUCT CODEC BER Rate 3/4 QPSK Rate 3/4 8-PSK Rate 3/4 16-QAM BER (With two adjacent carriers, each 7 dB higher than the desired carrier) TURBO PRODUCT CODEC BER Rate 7/8 QPSK Rate 7/8 8-PSK Rate 7/8 16-QAM BER (With two adjacent carriers, each 7 dB higher than the desired carrier) TURBO PRODUCT CODEC BER Rate 0.
CDM-600 Satellite Modem Summary of Specifications LDPC CODEC BER Rate 2/3 8-PSK Rate 3/4 8-PSK (With two adjacent carriers, each 7 dB higher than the desired carrier) LDPC CODEC BER Rate 2/3 8-QAM Rate 3/4 8-QAM (With two adjacent carriers, each 7 dB higher than the desired carrier) LDPC CODEC BER Rate 3/4 16-QAM (With two adjacent carriers, each 7 dB higher than the desired carrier) Revision 7 MN/CDM600.
CDM-600 Satellite Modem Remote Control Modem Alarms Relay outputs (Tx, Rx & unit faults) Demodulator I & Q test outputs (constellation) Demodulator Rx Signal Level output (0 to 2.5 volts) External carrier off input 4 backward alarm Form C relay outputs IDR BWA Outputs Remote Control ADPCM Audio Interface Auxiliary Serial 15.4 Revision 7 MN/CDM600.
CDM-600 Satellite Modem Summary of Specifications 15.6 Revision 7 MN/CDM600.IOM Data Rate Ranges Code Rate/Modulation FEC Type Data Rate Range Uncoded BPSK None 4.8 kbps to 10.0 Mbps Uncoded QPSK/OQPSK None 9.6 kbps to 20 Mbps Rate 1/2 BPSK Viterbi 2.4 kbps to 5.0 Mbps Rate 1/2 BPSK Sequential 2.4 kbps to 1.024 Mbps Rate 1/2 BPSK Viterbi with R-S 2.4 kbps to 4.444 Mbps Rate 1/2 BPSK Sequential with R-S 2.4 kbps to 1.024 Mbps Rate 1/2 QPSK/OQPSK Viterbi 4.8 kbps to 10.
CDM-600 Satellite Modem Remote Control 15.7 Miscellaneous Front panel Loopbacks Fault relays M&C Interface M&C Software Dimensions Weight AC consumption Operating voltage Operating temperature 15.8 Revision 7 MN/CDM600.
CDM-600 Satellite Modem Summary of Specifications Revision 7 MN/CDM600.IOM This page is intentionally left blank.
Chapter 16. REMOTE CONTROL 16.1 Introduction This section describes the protocol and message command set for remote monitor and control of the CDM-600 Modem. The electrical interface is either an EIA-485 multi-drop bus (for the control of many devices) or an EIA-232 connection (for the control of a single device), and data is transmitted in asynchronous serial form, using ASCII characters.
CDM-600 Satellite Modem Remote Control Revision 7 MN/CDM600.IOM Each target has a unique address, and each time the controller transmits, in a framed ‘packet’ of data, the address of the intended recipient target is included. All of the targets receive the packet, but only one (the intended) will reply. The target enables its output line driver, and transmits its return data packet back to the controller, in the other direction, on the physically separate pair. EIA 485 (full duplex) summary: • • • 16.
CDM-600 Satellite Modem Remote Control 16.5 Revision 7 MN/CDM600.
CDM-600 Satellite Modem Remote Control 16.5.3 Revision 7 MN/CDM600.IOM Instruction Code This is a three-character alphabetic sequence that identifies the subject of the message. Wherever possible, the instruction codes have been chosen to have some significance. For example TFQ for transmit frequency, RMD for receive modulation type, etc. This aids in the readability of the message, should it be displayed in its raw ASCII form. Only upper case alphabetic characters may be used (A-Z, ASCII codes 65 - 90).
CDM-600 Satellite Modem Remote Control Revision 7 MN/CDM600.IOM Second, if the controller sends an instruction to set a parameter to a particular value, then, providing the value sent in the argument is valid, the target will acknowledge the message by replying with TFQ= (with no message arguments).
CDM-600 Satellite Modem Remote Control 16.6 A ADJ?, 16–25 APP?, 16–13 AUP?, 16–13 B BFS?, 16–33 C CAE=, 16–32 CAS=, 16–31 CID?, 16–27 CLD=, 16–29 CST=, 16–29 CTD?, 16–26 D Revision 7 MN/CDM600.
CDM-600 Satellite Modem Remote Control Command (Instruction Code and Qualifier) TFQ= Arguments for Command or Response to Query 8 bytes Tx Interface Type TIT= 1 byte, value of 0 thru 6 Tx Framing Mode TFM= 1 byte, value of 0 thru 6 Parameter Type Tx Frequency Revision 7 MN/CDM600.IOM Response to Command Description of Arguments Command or Query. With hardware revision xx.0: standard frequency range: 52 MHz to 88 MHz, or 104 MHz to 176 MHz. With hardware revision xx.
CDM-600 Satellite Modem Remote Control Revision 7 MN/CDM600.IOM Exception: Select DROP or D&I++ mode using TFM (Transmit Framing type) which is highest priority Parameter Type Tx FEC Type Tx Modulation Type Command (Instruction Code and Qualifier) TFT= Arguments for Command or Response to Query 1 byte, value of 0 thru 9 TMD= 1 byte, value of 0 thru 5 Response to Command Description of Arguments Command or Query.
CDM-600 Satellite Modem Remote Control Parameter Type Tx FEC Code Rate Command (Instruction Code and Qualifier) TCR= Arguments for Command or Response to Query 1 byte, value of 0 thru 7 Revision 7 MN/CDM600.IOM Response to Command Description of Arguments Command or Query Tx Modulation Type, where: 0=Rate 1/2 1=Rate 3/4 2=Rate 7/8 3=Rate 2/3 (8-PSK TCM or LDPC only) 4=Rate 1/1 (Uncoded or No FEC) 5=Rate 21/44 (Turbo Only) 6=Rate 5/16 (Turbo Only) 7=Rate 0.
CDM-600 Satellite Modem Remote Control Parameter Type Tx ReedSolomon Encoding Command (Instruction Code and Qualifier) TRS= Arguments for Command or Response to Query 1 byte, value of 0 thru 3 Tx Spectrum Invert TSI= 1 byte, 0 or 1 Tx Scrambler TSC= 1 byte, 0 or 1 Tx Power Level TPL= 4 bytes Revision 7 MN/CDM600.IOM Response to Command Description of Arguments Command or Query.
CDM-600 Satellite Modem Remote Control Parameter Type Tx Carrier State AUPC Enable AUPC Parameters Command (Instruction Code and Qualifier) TXO= Arguments for Command or Response to Query 1 byte, value of 0 thru 3 AUP= 1 byte, 0 or 1 APP= 6 bytes Revision 7 MN/CDM600.IOM Response to Command Description of Arguments Command or Query.
CDM-600 Satellite Modem Remote Control Parameter Type Remote Eb/No Command (Instruction Code and Qualifier) N/A Arguments for Command or Response to Query 4 bytes Tx Power Level Increase N/A 3 bytes Tx Clock Source TCK= 1 byte, value of 0 thru 3 Invert Tx Data ITD= 1 byte, 0 or 1 Tx Audio Volume Control TVL= 4 bytes Revision 7 MN/CDM600.IOM N/A Query (Instruction Code and Qualifier) REB? N/A PLI? PLI=x.
CDM-600 Satellite Modem Remote Control Command (Instruction Code and Qualifier) TTA= Arguments for Command or Response to Query 1 byte, 0 or 1 Drop Type DTY= 1 byte, value of 0 thru 3 Tx Ternary Code TTC= 1 byte, value of 0 thru 3 Transmit Backward Alarms Enable TBA= 4 bytes, each a value of 0 thru 2 Transmit ESC Type TET= Parameter Type Transmit Terrestrial Alarm Mask 1 byte, 0 or 1 Revision 7 MN/CDM600.IOM Description of Arguments Response to Command Command or Query.
CDM-600 Satellite Modem Remote Control Parameter Type Tx IF Impedance Rx Frequency Command (Instruction Code and Qualifier) TIP= RFQ= Arguments for Command or Response to Query 1 byte, value of 5 or 7 8 bytes Revision 7 MN/CDM600.IOM Description of Arguments Response to Command Command or Query. Tx IF Impedance, where: 5=50Ω 7=75Ω TIP= TIP? TIP* TIP# Both Tx and Rx sides will change with this selection. Example: TIP=5 (50Ω) Command or Query. With hardware revision xx.
CDM-600 Satellite Modem Remote Control Parameter Type Rx Framing Mode Rx FEC Type Command (Instruction Code and Qualifier) RFM= RFT= Arguments for Command or Response to Query 1 byte, value of 0 thru 6 1 byte, value of 0 thru 9 Revision 7 MN/CDM600.IOM Response to Command Description of Arguments Command or Query. Rx Framing mode, where: 0=Unframed 1=IBS 2=IDR 3=INSERT (requires D&I FAST option) 4=EDMAC 5=D&I++ (requires D&I FAST option) (version 1.5.0 or higher) 6=ESC++ (requires version 2.0.
CDM-600 Satellite Modem Remote Control Parameter Type Rx Demod Type Command (Instruction Code and Qualifier) RMD= Arguments for Command or Response to Query 1 byte, value of 0 thru 5 Revision 7 MN/CDM600.IOM Response to Command Description of Arguments Command or Query.
CDM-600 Satellite Modem Remote Control Parameter Type Rx Data Rate Command (Instruction Code and Qualifier) RDR= Arguments for Command or Response to Query 9 bytes Revision 7 MN/CDM600.IOM Response to Command Description of Arguments Command or Query. Rx Data Rate, in kbps, between 2.4 kbps to 20 Mbps. Resolution=1 bps RDR= RDR? RDR* RDR# Query (Instruction Code and Qualifier) RDR? Response to Query RDR=xxxxx.xxx (see description of arguments) Example: RDR=02047.999. For Hardware Version 2.
CDM-600 Satellite Modem Remote Control Parameter Type External Clock Command (Instruction Code and Qualifier) REF= Arguments for Command or Response to Query 10 bytes Revision 7 MN/CDM600.IOM Description of Arguments Response to Command Command or Query. x=External Baseband Clock between 2.4 kHz and 20 MHz. y=U for Unbalanced, B for Balanced. REF= REF? REF* REF# Query (Instruction Code and Qualifier) REF? Response to Query REF=xxxxx.xxxy Example: REF =10000.
CDM-600 Satellite Modem Remote Control Command (Instruction Code and Qualifier) IRD= Arguments for Command or Response to Query 1 byte, 0 or 1 Rx Demod Acquisition Sweep Width RSW= 2 bytes Rx Clock Source RCK= 1 byte, value of 0 thru 3 Eb/No Alarm Point EBA= 4 bytes Rx Buffer Size RBS= 5 bytes Parameter Type Invert Rx Data Revision 7 MN/CDM600.IOM Description of Arguments Response to Command Command or Query.
CDM-600 Satellite Modem Remote Control Parameter Type Rx Audio Volume Control Receive Terrestrial Alarm Enable Command (Instruction Code and Qualifier) RVL= RTE= Arguments for Command or Response to Query 4 bytes 1 byte, 0 or 1 Insert Type ITY= 1 byte, value of 0 thru 3 Rx Ternary Code RTC= 1 byte, value of 0 thru 3 Receive Backward Alarms Enable RBA= 4 bytes, each a value of 0 or 1 Revision 7 MN/CDM600.IOM Response to Command Description of Arguments Command or Query.
CDM-600 Satellite Modem Remote Control Parameter Type Receive ESC Type Rx IF Impedance Command (Instruction Code and Qualifier) RET= Arguments for Command or Response to Query 1 byte, 0 or 1 RIP= 1 byte, value of 5 or 7 EDMAC Framing Mode EFM= 1 byte, 0 or 1 EDMAC Slave Address Range ESA= 4 bytes Revision 7 MN/CDM600.IOM Description of Arguments Response to Command Command or Query. (IDR Parameter) Sets or queries IDR ESC Type, where: 0=64k data channel 1=2 Audio channels Command or Query.
CDM-600 Satellite Modem Remote Control Parameter Type Engineering Service Channel Command (Instruction Code and Qualifier) ESC= Arguments for Command or Response to Query 1 byte, 0 or 1 Revision 7 MN/CDM600.IOM Response to Command Description of Arguments Command or query. (IBS and ESC++ feature) ESC=x Where: x = 0 (Disable the high-rate ESC) x = 1 (Enable the high-rate ESC) ESC Parameters SCP= 2 bytes, numeric IBS ESC may only be enabled when: 1. Both Tx and Rx framing modes are set to IBS. 2.
CDM-600 Satellite Modem Remote Control Parameter Type External Frequency Reference Internal 10MHz Reference Adjustment Command (Instruction Code and Qualifier) EFR= ADJ= Arguments for Command or Response to Query 1 byte, value of 0 thru 5 4 bytes, numeric Revision 7 MN/CDM600.IOM Response to Command Description of Arguments Command or query. (Hi-stab Ref parameter) Requires hardware Rev. 2.0 or greater and High-Stability Frequency Reference module to be installed.
CDM-600 Satellite Modem Remote Control Parameter Type Countdown of Warm-up Delay remaining Command (Instruction Code and Qualifier) CTD= Arguments for Command or Response to Query 3 bytes, numeric Revision 7 MN/CDM600.IOM Response to Command Description of Arguments Command or query. (Hi-stab Ref parameter) Requires High-Stability Frequency Reference module to be installed.
CDM-600 Satellite Modem Remote Control Parameter Type Circuit ID String Outdoor Unit Comms enable Command (Instruction Code and Qualifier) CID= Arguments for Command or Response to Query 40 bytes ODU= 1 byte, 0 or 1 Revision 7 MN/CDM600.IOM Response to Command Description of Arguments Command or Query Sets or queries the user-defined Circuit ID string, which is a fixed length of 40 characters. Valid characters include: Space ( ) * + – , . / 0 9 and A thru Z CID= CID? CID* CID# Command or Query.
CDM-600 Satellite Modem Remote Control Parameter Type Global Configuration Command (Instruction Code and Qualifier) MGC= Arguments for Command or Response to Query 118 bytes, with numerical entries, fixed values and delimiters Revision 7 MN/CDM600.IOM Response to Command Description of Arguments Command or Query.Global Configuration of CDM600, in the form: FFF.FFFF=Tx Frequency DDDDD.
CDM-600 Satellite Modem Remote Control Parameter Type Configuration Save Command (Instruction Code and Qualifier) CST= Arguments for Command or Response to Query 1 byte, value of 0 thru 9 Revision 7 MN/CDM600.IOM Description of Arguments Response to Command Command only. Command causes the CDM600 to store the current modem configuration in Configuration Memory location defined by the one-byte argument (0 to 9).
CDM-600 Satellite Modem Remote Control Parameter Type Statistics Sample Interval Command (Instruction Code and Qualifier) SSI= Arguments for Command or Response to Query 1 byte, numerical Revision 7 MN/CDM600.IOM Description of Arguments Response to Command Command or Query. Used to set the sample interval for the Statistics Logging Function SSI=x, where x= 0 to 9 in 10 minute steps.
CDM-600 Satellite Modem Remote Control Parameter Type Clear All Stored Statistics Initialize Statistics Pointer Number of Unread stored Events Command (Instruction Code and Qualifier) CAS= Arguments for Command or Response to Query None ISP= None N/A 3 bytes Revision 7 MN/CDM600.IOM Query (Instruction Code and Qualifier) N/A N/A ISP= ISP# N/A N/A N/A NUE? NUE=xxx (see description of arguments) Response to Command Description of Arguments Command only.
CDM-600 Satellite Modem Remote Control Parameter Type Retrieve next 5 unread Stored Events Clear All Stored Events Command (Instruction Code and Qualifier) N/A CAE= Arguments for Command or Response to Query 80 bytes None Revision 7 MN/CDM600.IOM Response to Command Description of Arguments Query only. Unit returns the oldest 5 Stored Events which have not yet been read over the remote control.
CDM-600 Satellite Modem Remote Control Parameter Type Initialize Events Pointer Rx Eb/No Rx Signal Level Command (Instruction Code and Qualifier) IEP= Arguments for Command or Response to Query None N/A 4 bytes N/A 5 bytes Rx Frequency Offset N/A 5 bytes Buffer Fill State N/A 2 bytes Revision 7 MN/CDM600.IOM Response to Command Description of Arguments Command only. Resets internal pointer to allow RNE? queries to start at the beginning of the stored events log. Query only.
CDM-600 Satellite Modem Remote Control Parameter Type Rx BER Command (Instruction Code and Qualifier) N/A Arguments for Command or Response to Query 5 bytes Redundancy State N/A 1 byte, 0 or 1 Local/Remote Status LRS= 1 byte, 0 or 1 Software Revision N/A 5 bytes Serial Number SNO= 9 bytes Revision 7 MN/CDM600.IOM N/A Query (Instruction Code and Qualifier) BER? N/A RED? RED=x (see description of arguments) LRS= LRS? LRS* LRS# LRS? LRS=x N/A SWR? SWR=x.x.
CDM-600 Satellite Modem Remote Control Parameter Type 33399999999 999Software Checksum Temperature Command (Instruction Code and Qualifier) N/A N/A Arguments for Command or Response to Query 29 bytes 3 bytes Revision 7 MN/CDM600.IOM N/A Query (Instruction Code and Qualifier) FCS? N/A TMP? Response to Command Description of Arguments Query only.
CDM-600 Satellite Modem Remote Control Parameter Type Equipment ID Hardware Revision Notes: Command (Instruction Code and Qualifier) N/A Arguments for Command or Response to Query 10 bytes N/A 4 bytes Revision 7 MN/CDM600.IOM Response to Command Description of Arguments Query only.
CDM-600 Satellite Modem Remote Control Parameter Type Faults and Status Command (Instruction Code and Qualifier) N/A Arguments for Command or Response to Query 6 bytes Revision 7 MN/CDM600.IOM Response to Command Description of Arguments Query only.
CDM-600 Satellite Modem Remote Control Parameter Type Drop & Insert Command (Instruction Code and Qualifier) DNI= Arguments for Command or Response to Query 51 bytes Revision 7 MN/CDM600.IOM Response to Command Description of Arguments Command or query.
CDM-600 Satellite Modem Remote Control Parameter Type Insert Timeslot Command (Instruction Code and Qualifier) ITS= Arguments for Command or Response to Query 3 bytes Revision 7 MN/CDM600.IOM Response to Command Description of Arguments Command or query. (Note different format between command and query.
CDM-600 Satellite Modem Remote Control Parameter Type Offline Unit Status Force 1:1 Switch Command (Instruction Code and Qualifier) N/A Arguments for Command or Response to Query 6 bytes FSW= None Revision 7 MN/CDM600.IOM Response to Command Description of Arguments Query only. (1:1 set-up) This query is sent to the online modem of a 1:1 pair. It provides access to the fault status information (FLT?) of the offline modem.
Appendix A. CABLE DRAWINGS The EIA-530 standard pinout (provided on the CDM-600) is becoming more popular in many applications. However, there are still many occasions when, especially for existing EIA-422/449 and V.35 users, a conversion must be made. For these situations, the following two cable drawings show EIA-530 to EIA-422/449 DCE conversion, and EIA-530 to V.35 DCE conversion. The third drawing shows a standard EIA-232 cable for use with the Remote Control Port of the Modem.
CDM-600 Satellite Modem Cable Drawings Revision 7 MN/CDM600.
CDM-600 Satellite Modem Cable Drawings Revision 7 MN/CDM600.
CDM-600 Satellite Modem Cable Drawings Revision 7 MN/CDM600.
Appendix B. Eb/No MEASUREMENT Although the CDM-600 calculates and displays the value of receive Eb/No on the front panel of the unit, it is sometimes useful to measure the value using a spectrum analyzer, if one is available.
CDM-600 Satellite Modem Eb/No Measurement Revision 7 MN/CDM600.IOM The idea is to accurately measure the value of (Co+No)/No, (Carrier density + Noise density/Noise density). This is accomplished by tuning the center frequency of the Spectrum analyzer to the signal of interest, and measuring the difference between the peak spectral density of the signal (the flat part of the spectrum shown) and the noise density. To make this measurement: • Use a vertical scale of 1 or 2 dB/division.
B–3 Notes: 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 13.5 14.0 14.5 15.0 15.5 16.0 16.5 17.0 17.5 18.0 18.5 19.0 19.5 20.0 0.7 1.2 1.7 2.1 2.6 3.0 3.9 4.8 5.6 6.3 7.1 7.7 8.4 9.0 9.6 10.3 10.8 11.4 12.0 12.5 13.1 13.6 14.2 14.7 15.2 15.8 16.3 16.8 17.3 17.9 18.4 18.9 19.4 19.9 20.4 20.9 21.4 21.9 22.5 23.0 IBS Framing: add 0.2 dB 0.0 0.9 1.8 2.6 3.3 4.1 4.7 5.4 6.0 6.6 7.3 7.8 8.4 9.0 9.5 10.1 10.6 11.2 11.7 12.2 12.8 13.
CDM-600 Satellite Modem Eb/No Measurement Revision 7 MN/CDM600.
Appendix C. FAST Activation Procedure C.1 Introduction FAST is an enhancement feature available in Comtech EF Data products, enabling onlocation upgrade of the operating feature set—in the rack—without removing a modem from the setup. This accelerated upgrade can be accomplished only because of FAST’s extensive use of programmable devices incorporating Comtech EF Data-proprietary signal processing techniques.
CDM-600 Satellite Modem FAST Activation Procedure C.2.2 Revision 7 MN/CDM600.IOM View currently installed features To view the currently installed features, proceed as follows: a. From the main menu, select FAST, then [ENTER]. b. From the FAST OPTIONS menu, select VIEW, then [ENTER]. c. Scroll through the Modem Options and note which are ‘Installed’ or ‘Not Installed’. Any that are ‘Not Installed’ may be purchased as a FAST upgrade. Contact a Comtech EF Data sales representative to order features.
Appendix D. ODU OPERATION D.1 Introduction The user can fully control and monitor the operation of a Comtech EF Data ODU from the front panel, using the keypad and display of a CDM-600 modem. Nested menus display all available options and prompt the user for required actions. The ODUs that can be controlled are: CSAT-5060 series KST-2000A KST-2000B The display has two lines each of 24 characters.
CDM-600 Satellite Modem ODU Operation Revision 7 MN/CDM600.IOM D.2 MENU TREES D.2.1 MODEM MAIN MENU SELECT: CONFIGURATION TEST INFORMATION MONITOR STORE/LOAD UTILITY ODU FAST The user is presented with the following choices: CONFIGURATION permits the user to fully configure the modem. TEST permits the user invoke one of several modem Test Modes. INFORMATION permits the user to view modem information, without having to go into configuration screens.
CDM-600 Satellite Modem ODU Operation D.2.2 Revision 7 MN/CDM600.IOM ODU ODU CONTROL=ENABLE (DISABLE/ENABLE) SYSTEM TYPE=STANDALONE (STANDALONE,1:1) ODU CONTROL: either ENABLE or DISABLE - turns on or off the FSK link to the ODU. SYSTEM TYPE: either STANDALONE or 1:1. STANDALONE should be selected when the Modem is linked via the Rx IF cable to a single Comtech EF Data ODU. Selecting STANDALONE for a CSAT will take the user to the menu shown in paragraph D.2.5.
CDM-600 Satellite Modem ODU Operation D.2.4 Revision 7 MN/CDM600.IOM (ODU,ENABLE,1:1) REDUNDANCY BOX RED: ONLINE:ODU2 MODE:AUTO TXSW:OK RXSW:OK 5V:5.0 SWITCH:N 12V:12.0 There are two modes that can be edited: • • AUTO MANUAL This is the indication of the current operating mode of the 1:1 ODU system. In Auto mode, when the Online ODU faults, the switchover is done automatically to replace the faulty unit. SWITCHover: either Yes or No (Default: No.
CDM-600 Satellite Modem ODU Operation D.2.6 Revision 7 MN/CDM600.IOM (ODU,ENABLE,1:1,CSAT#1) (ODU,ENABLE,1:1,CSAT#2) (ODU,ENABLE,STANDALONE CSAT) CONFIG: TX-PARAMETERS LNA-PARAMETERS CONFIGURATION CONFIGURATION CONFIGURATION RX-PARAMETERS MISCELLANEOUS Use the [←] or [→] keys to select the parameters to configure, then press ENTER. D.2.7 (ODU,ENABLE,1:1,CSAT#1,CONFIG) (ODU,ENABLE,1:1,CSAT#2,CONFIG) (ODU,ENABLE,STANDALONE CSAT,CONFIG) TX TX TX TX: FREQ=6427.0 MHz ATT=23.
CDM-600 Satellite Modem ODU Operation D.2.9 Revision 7 MN/CDM600.IOM (ODU,ENABLE,1:1,CSAT#1,CONFIG) (ODU,ENABLE,1:1,CSAT#2,CONFIG) (ODU,ENABLE,STANDALONE CSAT,CONFIG) RECEIVER RECEIVER RECEIVER RX: FREQ=3600.0 MHz ATT=18.00 dB MUTE=UNMUTED SLOPE Use the [←] or [→] arrow keys to select the parameter to edit. Use the [↑] or [↓] keys to edit the parameter, then press ENTER to implement, or CLEAR. The user may edit the RX Frequency, the RX Attenuation or the Mute setting.
CDM-600 Satellite Modem ODU Operation D.2.11 Revision 7 MN/CDM600.IOM (ODU,ENABLE,1:1,CSAT#1,CONFIG) (ODU,ENABLE,1:1,CSAT#2,CONFIG) (ODU,ENABLE,STANDALONE CSAT,CONFIG) LNA LNA LNA LNA: STATE=OFF CALIBRATE-LNA-CURRENT=NO CURRENT-WINDOW=48% FAULT-LOGIC=SUMMARY Use the [←] or [→] keys to select the parameter to edit. Use the [↑] or [↓] keys to edit the parameter, then press ENTER to implement, or CLEAR.
CDM-600 Satellite Modem ODU Operation D.2.12 Revision 7 MN/CDM600.IOM (ODU,ENABLE,1:1,CSAT#1,CONFIG) MISCELLANEOUS (ODU,ENABLE,1:1,CSAT#2,CONFIG) MISCELLANEOUS (ODU,ENABLE,STANDALONE CSAT,CONFIG)MISCELLANEOUS MISC: COLD-START=DISABLE AFR=ENABLE XREF=NO REF-ADJUST=087 RTC=OFF Use the [←] or [→] keys to select the parameter to edit. Use the [↑] or [↓] keys to edit the parameter, then press ENTER to implement, or CLEAR.
CDM-600 Satellite Modem ODU Operation D.2.13 Revision 7 MN/CDM600.IOM (ODU,ENABLE,1:1,CSAT#1) (ODU,ENABLE,1:1,CSAT#2) (ODU,ENABLE,STANDALONE CSAT) MONITOR MONITOR MONITOR MONITOR: TRANSMIT RECEIVE MISCELLANEOUS POWER-SUPPLIES Use the [←] or [→] keys to select the parameters to monitor, then press ENTER. D.2.14 (ODU,ENABLE,1:1,CSAT#1, MONITOR) TX (ODU,ENABLE,1:1,CSAT#2, MONITOR) TX (ODU,ENABLE,STANDALONE CSAT, MONITOR) TX TX: SYNTUNE = 09.6 VDC IFLO = 11.
CDM-600 Satellite Modem ODU Operation D.2.17 Revision 7 MN/CDM600.IOM (ODU,ENABLE,1:1,CSAT#1, MONITOR) PWR-SUPPLIES (ODU,ENABLE,1:1,CSAT#2, MONITOR) PWR-SUPPLIES (ODU,ENABLE,STANDALONE CSAT, MONITOR) PWR-SUPPLIES 24V=24.1 VDC 20V=21.2 VDC 12V=12.5VDC 10V=10.2VDC +5V=+5.4VDC -5V=-5.3VDC Press ENTER or CLEAR to return to previous menu. D.2.
CDM-600 Satellite Modem ODU Operation D.2.20 Revision 7 MN/CDM600.IOM (ODU,ENABLE,1:1,CSAT#1, ALARMS) STORED-ALARMS (ODU,ENABLE,1:1,CSAT#2, ALARMS) STORED-ALARMS (ODU,ENABLE,STANDALONE CSAT, ALARMS) STORED-ALARMS As the stored events are being read, the screen will show: READING STORED FAULTS..... PLEASE WAIT Then, the Stored Alarms screen will be shown.
CDM-600 Satellite Modem ODU Operation D.2.22 Revision 7 MN/CDM600.IOM (ODU,ENABLE,1:1,CSAT#1,INFO) (ODU,ENABLE,1:1,CSAT#2,INFO) (ODU,ENABLE,STANDALONE CSAT,INFO) MODEL: S/N: CSAT-5060/025 010300346 MODEL MODEL MODEL V2.19 Press ENTER or CLEAR to return to previous menu. D.2.23 (ODU,ENABLE,1:1,CSAT#1,INFO) (ODU,ENABLE,1:1,CSAT#2,INFO) (ODU,ENABLE,STANDALONE CSAT,INFO) INFO: TX:OFF AMP:OFF 6427.0MHz UNMUTED TX TX TX 23.00dB SLOPE:0.3 Press ENTER or CLEAR to return to previous menu.
CDM-600 Satellite Modem ODU Operation D.2.25 Revision 7 MN/CDM600.IOM (ODU,ENABLE,1:1,CSAT#1,INFO) (ODU,ENABLE,1:1,CSAT#2,INFO) (ODU,ENABLE,STANDALONE CSAT,INFO) INFO: MISC MISC MISC COLD START:OFF AUTO FAULT RECOVERY:SUMMARY Press ENTER or CLEAR to return to previous menu. D.2.26 (ODU,ENABLE,1:1,CSAT#1,INFO) (ODU,ENABLE,1:1,CSAT#2,INFO) (ODU,ENABLE,STANDALONE CSAT,INFO) INFO: LNA:OFF LNA LNA LNA FAULT-LOGIC:SUMMARY WINDOW:48% Press ENTER or CLEAR to return to previous menu. D.2.
CDM-600 Satellite Modem ODU Operation D.2.29 Revision 7 MN/CDM600.IOM (ODU,ENABLE,STANDALONE KST,CONFIG) TX:OFF FREQ=13955 MHz TX ATT=23 dB AGC=OFF Use the [←] or [→] keys to select the parameter to edit. Use the [↑] or [↓] keys to edit the parameter, then press ENTER to implement, or CLEAR. The user may edit the TX Frequency, the TX Attenuation, the Amplifier setting or the AGC setting. D.2.
CDM-600 Satellite Modem ODU Operation D.2.32 Revision 7 MN/CDM600.IOM (ODU,ENABLE,STANDALONE KST) KST INFO: INFORMATION MODEL TX+RX-PARAM MISC NUMBERS Use the [←] or [→] arrow keys to select the type of information to view, then press ENTER. D.2.33 (ODU,ENABLE,STANDALONE KST,INFO) MODEL: HPA: MODEL KST-2000B CEFD-SSPA Press ENTER or CLEAR to return to previous menu. D.2.
CDM-600 Satellite Modem ODU Operation D.2.36 Revision 7 MN/CDM600.IOM (ODU,ENABLE,STANDALONE KST,INFO) M&C: F/W:9364-1B assy:9357-1A NUMBERS VER:01.01.03 S/N:021476493 Press the [↑] or [↓] keys to view further Number information, for the Up Converter, Down Converter and HPA assemblies. Press ENTER or CLEAR to return to previous menu. D.2.37 (ODU,ENABLE,STANDALONE KST) CURRENT STATUS: P-SUPPLIES:OK UP:OK DN:OK REF:OK HPA:OK ALARMS AGC:OK LNA:OK This is Summary Staus information.
Index CLOCKS, 6–19 DROP TIMESLOTS, 6–22 EDMAC, 6–23 HIGH-RATE ESC, 6–25 IMPEDANCE, 6–29 INSERT TIMESLOTS, 6–23 MASKS, 6–27 REMOTE CONTROL, 6–26 RX, 6–14 RX PARAMTERS, 6–39 STATISTICS, 6–29 STATS, 6–38 TERNARY CODES, 6–24 WARM-UP DELAY, 6–25 Configuration, 2–4, 6–5, 16–18, 16–28, 16– 29 Connect External Cables, 2–4 1:1 manual switch, 6–41 16-QAM Viterbi, Rate 3/4, 7-25 8-PSK/TPC Coding Summary 7-6 8-PSK/TPC Rate 2/3, 7-20 A Activation Procedure, 1–6 Address, 6–26, 6–34, 16–2, 16–3, 16–18, 16–23 Alarm, 6–2,
CDM-600 Satellite Modem Index Revision 7 MN/CDM600.
CDM-600 Satellite Modem Index Revision 7 MN/CDM600.IOM Time Slot Selection, 10–8 Transmit Clocking, 10–1 U Unpacking, 2–1 UTILITIES, 6–40 V Verification, 1–3 Viterbi, 1–1, 1–4, 3–1, 6–2, 6–10, 6–15, 15– 2, 15–3, 16–17 X X.
CDM-600 Satellite Modem Index Revision 7 MN/CDM600.
CDM-600 Open Network Satellite Modem Manual Addendum A Subject: Update for new Drop and Insert capability Part Number: MN/CDM600.AA7 Revision 7 Addendum A October 10, 2005 Special Instructions: This document contains changes and new information for the CDM-600 Open Network Satellite Modem manual, part number MN/CDM600.IOM Rev. 7 dated February 9, 2005. Comtech EF Data is an ISO 9001 Registered Company Copyright © Comtech EF Data Corporation, 2003,2004,2005. All rights reserved. Printed in the USA.
New Features/Changes • Changes to Drop and Insert Since Version 7 of the CDM-600 Manual was published, there has been engineering development to modify the E1 Drop and Insert feature to add high-rate ESC (Engineering Service Channel) and AUPC (Automatic Uplink Power Control). • New remote control commands Two new commands have been added to query the Tx and Rx symbol rates. These are TSR? and RSR? respectively (query-only).
6.1 Description of D&I with ESC and AUPC The Drop and Insert (D&I) framing has been extended with the release of firmware version 2.1.0 to include the capability of adding high-rate ESC (Engineering Service Channel) and AUPC (Automatic Uplink Power Control). Currently this is available for E1 operation only.
N/A N/A FPL= Rx Symbol Rate Front Panel Lockout Command (Instruction Code and Qualifier) Tx Symbol Rate Parameter Type 1 byte, numeric 9 bytes, numeric 9 bytes, numeric Arguments for Command or Response to Query 2 Disable the lockout by either FPL=0, or by setting into local mode using LRS=0. Format is ddddd.ddd Command or query. Control the state of front-panel lockout, where: 0 = no lockout 1 = front panel lockout active. Format is ddddd.ddd Query only.
METRIC CONVERSIONS Units of Length Unit Centimeter Inch Foot Yard Mile Meter Kilometer Millimeter 1 centimeter — 0.3937 0.03281 0.01094 6.214 x 10-6 0.01 — — 1 inch 2.540 — 0.08333 0.2778 1.578 x 10-5 0.254 — 25.4 1 foot 30.480 12.0 — 0.3333 1.893 x 10-4 0.3048 — — 1 yard 91.44 36.0 3.0 — 5.679 x 10-4 0.9144 — — 1 meter 100.0 39.37 3.281 1.094 6.214 x 10-4 — — — 1 mile 1.609 x 105 6.336 x 104 5.280 x 103 1.760 x 103 — 1.609 x 103 1.
2114 WEST 7TH STREET TEMPE ARIZONA 85281 USA 480 • 333 • 2200 PHONE 480 • 333 • 2161 FAX
