User Manual

DE
DANIELS
ELECTRONICS
iv UT-4/400 UHF Project 25 Dig ital Transmitter Instruction Manual
2.13.2.10 Analog Signaling Settings: Signaling ........................................ 2-9
2.13.2.11 Analog Signaling Settings: CTCSS Tone.................................. 2-10
2.13.2.12 Analog Signaling Settings: Reverse Burst................................. 2-10
2.13.2.13 Analog Signaling Settings: DCS Code..................................... 2-10
2.13.2.14 Analog Signaling Settings: Turnoff Code ................................. 2-10
2.13.2.15 Analog Squelch Settings: Invert DCS...................................... 2-10
3 Transmitter Assembly and Adjustment ...................................................... 3-1
3.1 Frequency Change....................................................................... 3-1
3.2 Minor Frequency Change............................................................... 3-1
3.3 Major Frequency Change............................................................... 3-2
3.4 Digital Signal Processor Board Alignment ........................................... 3-2
3.4.1 Radio Service Software.............................................................. 3-2
3.4.2 Radio Programming Interface Module Interconnection .......................... 3-2
3.4.3 Reference Oscillator Adjustment .................................................... 3-2
3.4.4 Transmitter Deviation Ba lance Adjustment ........................................ 3-3
3.4.5 Transmitter Deviation Limit Adjustment ........................................... 3-3
3.4.6 Audio Level Alignment .............................................................. 3-3
3.4.7 Amplifier Alignment .................................................................. 3-4
3.5 Recommended Test Equipment List................................................... 3-4
3.6 Repair Note............................................................................... 3-4
3.7 Printed Circuit board Numbering Convention ....................................... 3-5
4 Repeater System Configuration .............................................................. 4-1
4.1 Interim Repeater ......................................................................... 4-1
4.1.1 Repeater Interconnect Cable Pinout ................................................ 4-2
4.2 Project 25 Compliant Repeater ......................................................... 4-2
4.3 Repeater System Troubleshooting ..................................................... 4-2
5 ILLUSTRATIONS ............................................................................ 5-1
5.1 Digital Repeater Transmitter Front Panel ............................................. 5-1
5.2 Digital Repeater Transmitter Exploded View......................................... 5-2
5.3 Digital Repeater Transm itter Block Diagram (Interim Mode)....................... 5-3
5.4 Digital Repeater Transmitter Schematic Diagram .................................... 5-4
5.5 Digital Repeater Transmitter Main Board Component Layout (Bottom) .......... 5-5
5.6 Digital Repeater Transmitter Main Board Component Layout (Top) .............. 5-6
5.7 Digital Repeater Microprocessor Board Component Layout (Bottom) ............ 5-7
5.8 Digital Repeater Microprocessor Board Component Layout (Top)................ 5-8