User ManualTable of Contents1GENERAL61.1Introduction61.2Interim Operation61.3Manual Organization61.4UT-4R400 Transmitter Family Models71.5Performance Specifications71.5.1General71.5.2Audio Specifications81.5.3Physical Specifications92THEORY OF OPERATION102.1General102.2Power Supply102.3High Speed Serial Interconnect112.4Audio Circuits112.5PTT Circuitry112.6Microprocessor Board112.7Channel and Bank Selection112.7.1Channel Select Line Mapping122.8Jumper Functions and standard configuration122.9Hang Timer Selection132.10Kerchunk noise selection142.11Test Points142.12Connector Pinouts152.12.1Connector J9152.12.2Connector P1152.13Transmitter Programming152.13.1Transmitter Wide Options162.13.1.1Frequency Band162.13.1.2Source ID162.13.1.3Secure Hardware Equipped162.13.1.4Timeout Options162.13.2Channel Wide Settings172.13.2.1Channel Name172.13.2.2Frequency172.13.2.3Analog Bandwidth172.13.2.4Deviation172.13.2.5Channel Type172.13.2.6Audio Pre-emphasis182.13.2.7Timeout Value182.13.2.8Project 25 Squelch Settings: Network Access Code (NAC)182.13.2.9Project 25 Squelch Settings: Talk Group ID (TGID)182.13.2.10Analog Signaling Settings: Signaling182.13.2.11Analog Signaling Settings: CTCSS Tone192.13.2.12Analog Signaling Settings: Reverse Burst192.13.2.13Analog Signaling Settings: DCS Code192.13.2.14Analog Signaling Settings: Turnoff Code192.13.2.15Analog Squelch Settings: Invert DCS193Transmitter Assembly and Adjustment203.1Frequency Change203.2Minor Frequency Change203.3Major Frequency Change213.4Digital Signal Processor Board Alignment213.4.1Radio Service Software213.4.2Radio Programming Interface Module Interconnection213.4.3Reference Oscillator Adjustment213.4.4Transmitter Deviation Balance Adjustment223.4.5Transmitter Deviation Limit Adjustment223.4.6Audio Level Alignment223.4.7Amplifier Alignment233.5Recommended Test Equipment List233.6Repair Note233.7Printed Circuit board Numbering Convention244Repeater System Configuration264.1Interim Repeater264.1.1Repeater Interconnect Cable Pinout274.2Project 25 Compliant Repeater274.3Repeater System Troubleshooting275ILLUSTRATIONS305.1Digital Repeater Transmitter Front Panel305.2Digital Repeater Transmitter Exploded View315.3Digital Repeater Transmitter Block Diagram (Interim Mode)325.4Digital Repeater Transmitter Schematic Diagram335.5Digital Repeater Transmitter Main Board Component Layout (Bottom)345.6Digital Repeater Transmitter Main Board Component Layout (Top)355.7Digital Repeater Microprocessor Board Component Layout (Bottom)365.8Digital Repeater Microprocessor Board Component Layout (Top)376PARTS LIST386.1Digital Repeater Transmitter Main Board Parts List386.1.1Digital Repeater Transmitter Main Board Electrical Parts List386.1.2Digital Repeater Transmitter Main Board Mechanical Parts List416.2Digital Repeater Microprocessor Board Parts List426.2.1Digital Repeater Microprocessor Board Electrical Parts List426.2.2Digital Transmitter Additional PCBs437REVISION HISTORY44Size: 689 KBPages: 45Language: EnglishOpen manual