User's Guide

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