Operating instructions

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6888882V04 1

RM1200

1kW Power Amplifier Option

Owner’s Guide

Table of Contents

Introduction................................................................................................................... 2

1 kW System Description............................................................................................... 2

Functional Description................................................................................................... 3

1 kW Amplifier ......................................................................................................... 3

Overdrive Protection................................................................................................. 4

High VSWR Protection.............................................................................................. 4

1 kW Amplifier Overheating Protection..................................................................... 4

Imbalance Protection ................................................................................................ 4

PS Unit ..................................................................................................................... 4

RM1200 Main Technical Characteristics ........................................................................ 5

Familiarization with RM1200 Equipment ....................................................................... 7

1 kW PA Front Panel................................................................................................. 7

1 kW PA LCD Functions ........................................................................................... 8

1 kW PA Rear Panel................................................................................................ 10

PS Front Panel......................................................................................................... 11

PS Rear Panel.......................................................................................................... 12

RM1200 Equipment Installation................................................................................... 13

Safety...................................................................................................................... 13

Installation Planning Guidelines............................................................................... 13

Grounding .............................................................................................................. 14

Power Requirements............................................................................................... 14

Cooling ................................................................................................................... 14

Installation Data ...................................................................................................... 14

Preparations for Installation.......................................................................................... 15

Installation Procedure .................................................................................................. 16

RM1200 Operation ..................................................................................................... 18

General................................................................................................................... 18

Preparations for Operation...................................................................................... 18

Calibration Procedure ............................................................................................. 18

Equipment Turn-On................................................................................................ 19

Operating Instructions............................................................................................. 20

Equipment Turn-Off................................................................................................ 20

Summary of content (20 pages)

PAGE 1
RM1200 1kW Power Amplifier Option Owner’s Guide Table of Contents Introduction................................................................................................................... 2 1 kW System Description............................................................................................... 2 Functional Description................................................................................................... 3 1 kW Amplifier .......................................................
PAGE 2
Introduction This manual covers the installation and operation of the MICOM RM1200 1 kW linear high-power RF amplifier unit, FLN3175. RM1200 uses the MICOM RM125 or RM125R, part of the MICOM-3 line of HF-SSB radio sets, as exciter and controller to implement a complete 1 kW transceiver. The manual covers only procedures specific to the MICOM RM1200. For procedures related to the RM125 and RM125R, refer to the “RM125/RM125R Owner’s Guide”, Publication 6888882V02.
PAGE 3
Protection circuits monitor the various operating conditions, and prevent damage to the 1 kW amplifier by taking appropriate action, in accordance with the detected problem. The 1 kW amplifier has several status indicators, and a front-panel LCD that enables the operator to monitor the RM1200 operation. This LCD can be used to read the actual forward and reflected power (or VSWR), and report problems such as the activation of protection circuits or technical malfunctions.
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Overdrive Protection The 1 kW amplifier requires a nominal drive power of approx. 40W. When operating the 1 kW amplifier with the RM125/RM125R as driver, the input power is automatically adjusted by an automatic level control to achieve optimal operating conditions for the amplifier.
PAGE 5
RM1200 Main Technical Characteristics This section presents the main technical characteristics of the RM1200. if you need additional details, contact the manufacturer or your local representative. General Operating Modes • Transmit mode (PTT controlled) • Bypass mode (input connector connected to output connector with RM1200 not powered, in the receive mode, or after protection is activated) • Tuning (automatic detection of transmit signal frequency) Transmit frequency range 1.
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Load mismatch • Full transmit power for VSWR up to 1.3:1 • Reduced transmit power for higher VSWR • Full protection against short/open circuit Overheating protection • Reduced transmit power for high temperature • Bypass in case of excessive temperature Operating voltage 45 to 48 VDC from PS unit Power requirements • Maximum 2000W in SSB mode • Maximum 3500W in CW mode Dimensions PS Unit Main Characteristics 6 Cooling Forced air cooling Height 221 mm/8.
PAGE 7
Familiarization with RM1200 Equipment 1 kW PA Front Panel Figure 1 identifies the items located on the front panel of the 1 kW amplifier, and Table 1 explains their functions. 6 5 RM-1200 FAULT 4 TX 3 BYPASS 1000HF SSB - AMPLIFIER DISPLAY MODE 1 2 Figure 1. 1 kW PA Front Panel Table 1. 1 kW PA Front Panel Items Item Description Function 1 Display LCD display.
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1 kW PA LCD Functions The LCD is used to display information on the operational conditions of the 1 kW amplifier, and status information. The LCD comprises 2 rows, and therefore it is necessary to split the information on four different display pages of 2 rows each. The first row of each page always presents two items: • The current mode indicator, RX or TX • The operating frequency, in MHz, as detected during the tuning process.
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Table 3. 1 kW PA Fault and Warning Messages Type Message AMP#1 AMP#2 AMP#3 AMP#4 Meaning Corrective Actions Service is required The corresponding amplifier module does not operate, for example, because its supply line fuse is blown, or a fault in the module itself. 1 kW amplifier is in the bypass mode and cannot transmit RF IN OVERLOAD Excessive drive power supplied to the RF IN input. When using the amplifier with a driver other than RM125/RM125R, check the maximum transmit power of the driver unit.
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Table 3. 1 kW PA Fault and Warning Messages (Cont.) Type Message Meaning INVALID FREQ Corrective Actions 1 kW amplifier could not determine the Check the cable connections between the RM125/RM125R and operating frequency. the 1 kW amplifier.
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Table 4. 1 kW PA Rear Panel Items (Cont.
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Table 5. PS Front Panel Items (Cont.) Item Description Function 5 OUT 2 OK indicator Same as Item 3 for power supply subsystem 2 6 OUT 2 NG indicator Same as Item 4 for power supply subsystem 2 PS Rear Panel Figure 4 identifies the items located on the front panel of the PS unit, and Table 6 explains their functions. AC INPUT DC OUTPUT 110-230VAC/ 47~63Hz OUT 1 OUT 2 +V +V 45V 45V -V -V L N G GND 1 2 3 4 Figure 4. PS Rear Panel Table 6.
PAGE 13
RM1200 Equipment Installation Safety Warning For general operating and installation safety information, see the “Owner’s Guide, MICOM-3F/3T/3R HF-SSB Transceivers”, Publication 6886867J01. During installation work, strictly observe the applicable safety precautions and local regulations. Do not work on the antenna system during lightning storms. Proper grounding is essential for your safety, and for good communication performance.
PAGE 14
Grounding Failure to provide proper grounding to each system unit (RM125/RM125R, 1 kW PA and PS unit, and to the optional PPS) and to the rack in which these units are installed will degrade system operation and cause RF voltage to be present on the equipment chassis. A possible serious hazard to personnel could result, as well as equipment malfunction. Wide copper straps, as short as possible, must be used for grounding.
PAGE 15
The antenna system must provide a matched termination at the operating frequency, and must be capable of handling the maximum power output of the RM1200. Antenna Feed System The antenna feed system comprises any cables, panels and matrices, and any accessories that carry HF signals between the RM1200 and the antenna itself. The high output power of the RM1200 requires particular attention to the power rating of the antenna system, and to the use of a high-quality, low-loss feed cable.
PAGE 16
Installation Procedure Note All the information appearing in this section is presented for RM1200 used with the RM125/RM125R as exciter. For RM125/RM125R installation and operation instructions, refer to the “RM125/RM125R Owner’s Guide”, Publication 6888882V02. If you are using another vendor’s equipment, refer to its installation and operation manual. Refer to Figure 5 for a typical RM1200 interconnection diagram (this figure shows a system using the RM125/RM125R as exciter). 1.
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RM125 (Exciter) REMOTE CONTROL TX IN PPS-CONT TX OUT RX OUT RX IN ON OFF ACC-J1 ACC-J4 ACC-J2 ACC-J3 + BAT - 13.8V AC RF OUT 110/220V AMP-CONT Control Cable To Antenna (via Coaxial Protector) To AC Source RM1200 (PA) EXCITER CONTROL MONITOR RF Out +48VDC RF In DC Power Cable PS Unit AC INPUT DC OUTPUT 110-230VAC/ 47~63Hz OUT 1 OUT 2 +V +V 45V 45V -V -V Line L N Neutral Ground G GND AC Power Cable to AC Source Figure 5.
PAGE 18
RM1200 Operation General The following instructions present operating procedures specific to the RM1200 also used with the RM125 or RM125R as exciter. It is assumed that the operator is familiar with the RM125/RM125R operating procedures, as described in the Publication 6888882V02, “RM125/RM125R Owner’s Guide”, Publication 6886867J01, “Owner’s Guide, MICOM-3F/3T/3R HF-SSB Transceivers”, and the applicable MICOM-3 Supplements that cover optional features. Preparations for Operation 1.
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Equipment Turn-On 1. Apply power to the RM125/RM125R by setting its AC power switch to ON (up). 2. Set the AC power switch on the PS unit to ON, and monitor its indications. The expected indications, as well as what to do if a problem is detected, are described in Table 7. 3. Turn the RM125/RM125R ON/OFF switch and volume control clockwise and adjust for a comfortable listening level. 4. The 1 kW amplifier is also turned on. Monitor its power-up indications.
PAGE 20
Operating Instructions You are now ready to start using the radio set. For the additional operating procedures, you may use the information appearing in the “RM125/RM125R Owner’s Guide”, Publication 6888882V02, and in the “Owner’s Guide, MICOM-3F/3T/3R HF-SSB Transceivers”, Publication 6886867J01. 1. During reception, you will see the receive indications (RX and the operating frequency) on the 1 kW amplifier LCD.