Codan Radio Communications UT-3-460-S08 User Manual
DE
DANIELS
ELECTRONICS
iv
Transmitter Main Board Instruction Manual
2.4.1
General............................................................................................... 2-12
2.4.2
Power Requirements .......................................................................... 2-12
2.4.3
Audio Processor Turn-on Time.......................................................... 2-13
2.4.4
Audio Processor Signals.................................................................... 2-13
2.4.4.1
Audio Processor Outputs....................................................... 2-13
2.4.4.2
Audio Processor Modulation Output ..................................... 2-14
2.4.4.3
Audio Processor Low Frequency / Direct Mod. Output......... 2-14
2.4.4.4
Audio Processor Inputs.......................................................... 2-14
2.4.4.5
Audio Processor Microphone Input....................................... 2-15
2.4.4.6
Audio Processor Balanced Input............................................ 2-15
2.4.4.7
Audio Processor Auxiliary Input............................................ 2-15
2.4.4.8
Audio Processor Subtone Inputs............................................ 2-15
2.4.4.9
Audio Processor Direct Modulation Input ............................. 2-16
2.5
Low Frequency Modulation........................................................................... 2-16
3
TRANSMITTER ALIGNMENT ................................................................................ 3-1
3.1
General........................................................................................................... 3-1
3.2
Repair Note.................................................................................................... 3-1
3.3
Printed Circuitboard Numbering Convention................................................. 3-1
3.4
Recommended Test Equipment List............................................................... 3-1
3.5
Standard Factory Settings and Jumper Configuration.................................... 3-2
3.5.1
MT-3 Transmitter Board Factory Configuration................................ 3-2
3.5.2
MT-3 Audio Processor Factory Configuration .................................. 3-3
3.6
MT-3 Transmitter Board Alignment............................................................... 3-4
3.6.1
General............................................................................................... 3-4
3.6.2
MT-3 Transmitter Board Test Points ................................................. 3-5
3.7
Module Installation and Removal................................................................... 3-5
3.8
MT-3 Audio Processor Alignment................................................................. 3-6
3.8.1
General............................................................................................... 3-6
3.8.2
MT-3 Audio Processor Standard Deviation Adjustment .................... 3-6
3.9
Standard Factory Settings and Jumper Configuration.................................... 3-8
3.9.1
MT-3 Audio Processor Factory Configuration (Version 1.8) ............ 3-8
3.10
MT-3 Audio Processor Alignment (Version 1.8)........................................... 3-10
3.10.1
General............................................................................................... 3-10
3.10.2
MT-3 Audio Processor Standard Deviation Adjustment .................... 3-10
3.11
Low Frequency Modulation Configuration.................................................... 3-11
3.11.1
MT-3 Transmitters............................................................................. 3-11
3.11.2
MT-3 Transmitter Audio Processors.................................................. 3-12
3.11.3
Synthesizer and Crystal Controlled Oscillator.................................... 3-13
3.11.4
Tuning the Transmitter....................................................................... 3-14
4
TRANSMITTER INTERCONNECT PIN DEFINITIONS ....................................... 4-1
5
ILLUSTRATIONS AND SCHEMATIC DIAGRAMS.............................................. 5-1
5.1
Transmitter Block Diagram............................................................................ 5-1
5.2
Transmitter Main Board Electrical Assembly................................................. 5-3