Motorola DR 3000 service manual Tot, Tpl, Uhf, Vip

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Glossary-2

Term

Definition

 

 

PC Board

Printed Circuit Board. Also referred to as a PCB.

PL

Private-Line Tone Squelch: A continuous sub-audible tone that is transmitted

 

along with the carrier.

Programming Cable

A cable that allows the CPS to communicate directly with the radio using

 

RS232.

Receiver

Electronic device that amplifies RF signals. A receiver separates the audio

 

signal from the RF carrier, amplifies it, and converts it back to the original

 

sound waves.

Repeater

Remote transmit/receive facility that re-transmits received signals in order to

 

improve communications range and coverage (conventional operation).

RF

Radio Frequency: The portion of the electromagnetic spectrum between audio

 

sound and infrared light (approximately 10 kHz to 10 GHz).

RX

Receive.

Signal

An electrically transmitted electromagnetic wave.

Spectrum

Frequency range within which radiation has specific characteristics.

Squelch

Muting of audio circuits when received signal levels fall below a pre-determined

 

value. With carrier squelch, all channel activity that exceeds the radio’s preset

 

squelch level can be heard.

TOT

Time-out Timer: A timer that limits the length of a transmission.

TPL

Tone Private Line

Transceiver

Transmitter-receiver. A device that both transmits and receives analog or digital

 

signals. Also abbreviated as XCVR.

Transmitter

Electronic equipment that generates and amplifies an RF carrier signal,

 

modulates the signal, and then radiates it into space.

TX

Transmit.

UHF

Ultra-High Frequency.

USB

Universal Serial Bus: An external bus standard that supports data transfer rates

 

of 12 Mbps.

VIP

Vehicle Interface Port.

February 21, 2007

6866576D03-A

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Contents Mototrbo Repeater UHF Range 1 Mototrbo Repeater Product Safety and RF Exposure Compliance ForewordDocument History February 21 Table of Contents Chapter Basic Troubleshooting Appendix a Emea Regional Warranty, Service and SupportGlossary Glossary-1 List of Figures List of Tables Related Publications Introduction Notations Used in This ManualRepeater Description Mototrbo Repeater Model Numbering Scheme AA MModel Description MDM27QPR9JA7ANSpecifications UHF1Transmitter Introduction Specifications Test Equipment and Service Aids Recommended Test EquipmentService Aids Programming CablesWire Diagram Test Equipment and Service Aids Programming Cables Transceiver Performance Testing SetupGeneral AM, CW, FM FMSinad Repeater Tuning and Programming Customer Programming Software SetupRepeater Tuning Setup ACC USBDisassembly/Reassembly Procedures Preventive MaintenanceCleaning Procedures InspectionSafe Handling of Cmos and Ldmos Devices U t i o nRepair Procedures and Techniques General Lead Free Solder Paste Part Number ListDisassembly Procedures Detailed Disassembly of CoverDisassembling and Reassembling the Repeater General Disassembly of Repeater Indicator Board Disassembly of Fan Repeater Indicator Board DisassemblyTx Radio Disassembly Removing Transmit RadioRemoving Thermal Pad and Heatsink Receive Radio Removal Disassembly of Receive Radio Disassembly of Connector Board AssemblyDisassembly of Power Supply Transmit and Receive Radio Disassembly Detailed Transceiver Board and Receiver Board RemovalRF/DC Retention Clips Removal 10. Transceiver Board Removal Transmit and Receive Radio Reassembly Detailed 12. Transceiver Board with Thermal PadsTransceiver Board and Receiver Board Reassembly OccurRF/DC Retention Clips17. Assembling of PA Pad and O-ring 18. Assembling Die Cast Cover onto Chassis Thermal Pad Replacement Procedure 19. Screw Sequence to Tighten Die Cast Cover22. Placing Thermal Pads on PA and Transistor Components Reassembly of Power Supply Reassembly of Receive RadioReassembly of Connector Board Assembly Reassembly of the Receive Bracket Assembly to the EnclosureReassembly of Transmit Radio Replacing the Thermal Pad and HeatsinkReassembly of Fan Reassembly of Repeater Indicator BoardReassembly of Cover Repeater Exploded Mechanical Views and Parts Lists 24. Repeater Assembly Exploded View25. Receive Bracket and Radio Assembly Exploded View 6866576D03-A Torque Chart Disassembly/Reassembly Procedures Torque Chart Basic Troubleshooting Replacement Service Kit ProceduresHigh Power RF Precaution LED Indicator Descriptions LEDWarranty and Service Support Warranty Period and Return InstructionsAfter Warranty Period European Radio Support Centre Ersc Piece PartsTechnical Support Further Assistance From MotorolaEmea Regional Warranty, Service and Technical Support Glossary TOT TPLUHF VIP@6866576D03@