User Manual
Table Of Contents
- 1GENERAL
- 1.1Introduction
- 1.2Interim Operation
- 1.3Manual Organization
- 1.4VT-4R400 Transmitter Family Models
- 1.5Performance Specifications
- 1.5.1General
- 1.5.2Audio Specifications
- 1.5.3Physical Specifications
- 2THEORY OF OPERATION
- 2.1General
- 2.2Power Supply
- 2.3High Speed Serial Interconnect
- 2.4Audio Circuits
- 2.5PTT Circuitry
- 2.6Microprocessor Board
- 2.7Channel and Bank Selection
- 2.7.1Channel Select Line Mapping
- 2.8Jumper Functions and standard configuration
- 2.9Hang Timer Selection
- 2.10Kerchunk noise selection
- 2.11Test Points
- 2.12Connector Pinouts
- 2.12.1Connector J9
- 2.12.2Connector P1
- 2.13Transmitter Programming
- 2.13.1Transmitter Wide Options
- 2.13.1.1Frequency Band
- 2.13.1.2Source ID
- 2.13.1.3Secure Hardware Equipped
- 2.13.1.4Timeout Options
- 2.13.2Channel Wide Settings
- 2.13.2.1Channel Name
- 2.13.2.2Frequency
- 2.13.2.3Analog Bandwidth
- 2.13.2.4Deviation
- 2.13.2.5Channel Type
- 2.13.2.6Audio Pre-emphasis
- 2.13.2.7Timeout Value
- 2.13.2.8Project 25 Squelch Settings: Network Access Code (NAC)
- 2.13.2.9Project 25 Squelch Settings: Talk Group ID (TGID)
- 2.13.2.10Analog Signaling Settings: Signaling
- 2.13.2.11Analog Signaling Settings: CTCSS Tone
- 2.13.2.12Analog Signaling Settings: Reverse Burst
- 2.13.2.13Analog Signaling Settings: DCS Code
- 2.13.2.14Analog Signaling Settings: Turnoff Code
- 2.13.2.15Analog Squelch Settings: Invert DCS
- 3Transmitter Assembly and Adjustment
- 3.1Frequency Change
- 3.2Minor Frequency Change
- 3.3Major Frequency Change
- 3.4Digital Signal Processor Board Alignment
- 3.4.1Radio Service Software
- 3.4.2Radio Programming Interface Module Interconnection
- 3.4.3Reference Oscillator Adjustment
- 3.4.4Transmitter Deviation Balance Adjustment
- 3.4.5Transmitter Deviation Limit Adjustment
- 3.4.6Audio Level Alignment
- 3.4.7Amplifier Alignment
- 3.5Recommended Test Equipment List
- 3.6Repair Note
- 3.7Printed Circuit board Numbering Convention
- 4Repeater System Configuration
- 4.1Interim Repeater
- 4.1.1Repeater Interconnect Cable Pinout
- 4.2Project 25 Compliant Repeater
- 4.3Repeater System Troubleshooting
- 5ILLUSTRATIONS
- 5.1Digital Repeater Transmitter Front Panel
- 5.2Digital Repeater Transmitter Exploded View
- 5.3Digital Repeater Transmitter Block Diagram (Interim Mode)
- 5.4Digital Repeater Transmitter Schematic Diagram
- 5.5Digital Repeater Transmitter Main Board Component Layout (Bottom)
- 5.6Digital Repeater Transmitter Main Board Component Layout (Top)
- 5.7Digital Repeater Microprocessor Board Component Layout (Bottom)
- 5.8Digital Repeater Microprocessor Board Component Layout (Top)
- 6PARTS LIST
- 6.1Digital Repeater Transmitter Main Board Parts List
- 6.1.1Digital Repeater Transmitter Main Board Electrical Parts List
- 6.1.2Digital Repeater Transmitter Main Board Mechanical Parts List
- 6.2Digital Repeater Microprocessor Board Parts List
- 6.2.1Digital Repeater Microprocessor Board Electrical Parts List
- 6.2.2Digital Transmitter Additional PCBs
- 7REVISION HISTORY
DE
DANIELS
ELECTRONICS
2-6 VT-4R150 VHF Project 25
Digital
Transmitter
Instruction
Manual
2.12
Connector
Pinouts
2.12.1
Connector
J9
A dual, 8 position RJ-45 jack is mounted on the Connector Board so as to be
accessible
from the
receiver’s
front panel. The pins of each of the two jacks are wired
identically.
The following are
the
connections
on
J1.
Pin Signal
1
LH_DATA
2
AUDIO
3
ANALOG_COR*
4
LVDS
DATA+
5
LVDS
DATA-
6
DIGITAL_COR*
7 +8.8VDC TO RPIM
8 SB9600_BUSY
2.12.2
Connector
P1
The Connector Board employs a 48 pin Eurostandard
connector
for
interfacing
to most
receiver
power,
audio, and control functions. The following are the
Main
Board
backplane
connections
to
the M-3 Motherboard.
Pin
Name
Pin
Name
Pin
Name
D2 No Connect B2
+13.8
Vdc
Z2
+13.8
Vdc
D4 No Connect B4 No Connect Z4 No Connect
D6 No Connect B6
+9.5
Vdc
Z6
+9.5
Vdc
D8 No Connect B8 No Connect Z8 No Connect
D10 No Connect
B10
PTT* Input
Z10
PTT* Input
D12 No Connect
B12
Bank A/B* Input
Z12
Bank A/B* Input
D14 No Connect
B14
No Connect
Z14
No Connect
D16 No Connect
B16
No Connect
Z16
No Connect
D18 No Connect
B18
Unbal. Audio 2 Input
Z18
Unbal Audio 1 input
D20 Channel Select 0 (LSB)
B20
No Connect
Z20
No Connect
D22 Channel Select 1
B22
RS-232 Out
Z22
RTS
In
D24 Channel Select 2
B24
PTT* Output
Z24
CTS
Out
D26 Channel Select 3 (MSB)
B26
VSWR Fwd Output
Z26
VSWR Rev Output
D28 No Connect
B28
RS-232 Input
Z28
Reserved
D30 No Connect
B30
Ground
Z30
Ground
D32 No Connect
B32
Ground
Z32
Ground
2.13
Transmitter
Programming
Transmitter
programming
is performed with the PC-based Radio Service Software
(RSS).
A
Daniels
Radio Programming
Interface
Module
(RPIM) is used with a
special
programming
cable to
connect
the serial port of an IBM
compatible
computer
to the
Digital
I/O port on the front panel of
the
Transmitter
module. The RSS runs under
Microsoft
Windows 3.1 and Windows 95/98, and
allows the
Transmitter
to be
programmed
for
operating
frequencies, CTCSS and DCS signaling,
and
modulation
type.
Analog
test modes may be
selected
by the Radio Programming Software, as
well as test modes
specific
to Project 25
digital
operation, such as Bit Error Rate testing.