DGR 6175 PDF

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No duplication or distribution of this document or any portion thereof shall take place without the express written permission of Motorola. No part of this manual may be reproduced, distributed, or transmitted in any form or by any means, electronic or mechanical, for any purpose without the express written permission of Motorola.

Document History The following major changes have been implemented in this manual since the previous edition: Product Accessories One 1 Year Motorola, at its option, will at no charge either repair the Product with new or reconditioned partsreplace it with a new or reconditioned Productor refund the purchase price of the Product during the warranty period provided it is returned in accordance with the terms of this warranty. Replaced parts or boards are warranted for the balance of the original applicable warranty period.

Warranty service will be provided by Motorola through one of its authorized warranty service locations. If you first contact the company which sold you the Product, it can facilitate your obtaining warranty service. You can also open a Contact Us case on Motorola Online http: Furthermore, the purchase of Motorola products shall not be deemed to grant either directly or by implication, estoppel, or otherwise, any license under the copyrights, patents or patent applications of Motorola, except for the normal non-exclusive license to use that arises by operation of law in the sale of a product.

These notations are used to emphasize that safety hazards exist, and due care must be taken and observed. Preventive maintenance inspection and cleaning. Inspection Check that the external surfaces of the repeater are clean, and that all external controls and switches are functional. Replacement wrist straps that connect to the bench top covering are Motorola part number A Check all power supplies used for testing CMOS devices to be certain that there are no voltage transients present.

When damaged parts are replaced, identical parts should be used. If the identical replacement part is not locally available, check the parts list for the proper Motorola part number and order the part from the nearest Motorola Radio Products and Solutions Organization listed in Appendix A of this manual. Airflow can vary due to component density. To remove a chip component: To remove the shield: Add solder paste flux around the base of the shield.

Table lists the service aids recommended for working on the repeater. While all of these items are available from Motorola, most are standard workshop equipment items, and any equivalent item capable of the same performance may be substituted for the item listed. Furthermore, the purchase of Motorola products shall not be deemed to grant either directly or by implication, estoppel or otherwise, any license under the copyrights, patents or patent applications of Motorola, except for the normal non-exclusive license to use that arises by operation of law in the sale of a product.

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MOTOROLA MOTOTRBO DGR DETAILED SERVICE MANUAL Pdf Download.

This bi-color LED gets turned on green when the Connector Board The Connector board has two purposes: This is a programmable device from Cypress 617. There are basically two functions provided by the fan controller. First, it provides a PWM output based on a temperature input, and secondly, it provides detection of fan failure based on the fan tachometer reading.

Controller Radio Power Distribution Figure illustrates the controller DC power distribution throughout the transceiver board. In this application, it is configured as a synchronous buck dc-dc regulator.

It generates an accurate 3. Controller Clocks Figure illustrates the controller clocks used throughout the radio. CPS and tuning via the Tuner Tool. Only one of these ports is available via the MAP connectorthe other is dedicated to the Ethernet controller. Remove faulty radio and proceed from here.

DGR 6175 Repetidora

Will Tuner connect to the Radio? Check these three conditions 9. Controller R1 Schematic Diagrams 1. Controller R2 Schematic Diagrams 1. Both of these radios contain specialized software that allows them to function together as a repeater. The Repeater also contains a Repeater Indicator board and a Connector board.

Introduction Receiver The receiver uses a transceiver board which is based on the mobile radio’s transceiver board. The board uses the same PCB as the mobile radio board, but is populated 66175 to work in the Repeater application.

Only the receiver related functions of the board are utilized in this application, even though the circuitry for transmit also exists on the board.

When the software initialization is completed by the firmware, the blink circuitry will get disabled by the firmware. Introduction The fan control logic is provided by the fan controller IC U This is a device dfr Cypress Semiconductor.

dgd Provides the SSI connection between the transmit and receive radios. Refer to Section for more details on this interface. Thirty conductor flex cable. This filter, along with the similarly designed post-selector filter, provides over 75 dB of image response rejection.

The power amplifier provides amplification of the signal from the VCO up to the desired output power. The power control block is responsible for ensuring the desired output power level is maintained in both analog and digital modes, as well as protecting the power amplifier from damage due to heat, antenna mismatch, out-of-range battery voltage, and poor assembly. Its gain is controlled by varying the gate bias voltage and varies from low gain up to approximately 14 dB power gain.

Additional pads are provided on the PC board to allow for possible engineering optimizations to this match.

Td-R558 vhf uhf 50w output long range transceiver dgr 6175 repeater

Its physical location close to the antenna connector allows accurate VSWR sense at the transmitter output. Forward and reverse coupled signals are rectified by D and D, respectively. Radio did not boot up properly or check properly or check This Chapter shows the schematics for the UHF1 circuits only, refer to the Controller section for details of the related Controller circuits.

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Circuit Motorola Description Part No. C H49 47pF C B This filter, and the similarly designed post- selector filter, provide over 75 dB of image response rejection. The power amplifier is responsible for delivering a faithful replica of the VCO output amplified up to the desired output power level, free from distortion.

An increased difference amplifier output causes a reduction in attenuation by the VCA. The voltage divider output is routed to operational amplifier U, which provides a dc voltage via diode junction D to control the attenuation level of the VCA stage.

The Tx buffer amplifier also provides sufficient isolation from any undesired load-pulling from the Transmitter Power Amplifier. In order to meet spurious and phase noise requirements, the PLL bandwidth was designed to be narrower than the full modulation bandwidth, therefore requiring the use of dual-port modulation. This Chapter shows the schematics for the VHF circuits only, refer to the Controller section for details of the related Controller circuits. C A10 pF C Y02 0. To register for online access: An electric current passed through the liquid causes the crystals to align so that light cannot pass through them.

An electronic device that lights up when electricity is passed through it. Glossary-2 Term Definition Megahertz: One million cycles per second. Used especially as a radio- frequency unit. Paging One-way communication that alerts the receiver to retrieve a message. Also referred to as a PCB. A continuous sub-audible tone that is transmitted along with the carrier. Page of Go. Page 80 – Controller Peripheral Schematic Diagram Page 81 – Controller Peripheral Schematic Diagram Page 82 – Controller Microprocessor Schematic Diag Page 94 – Controller Peripheral Schematic Diagram Page 95 – Controller Peripheral Schematic Diagram Page 96 – Controller Microprocessor Schematic Diag Page – Troubleshooting Flow Chart for Synthesiz Table of Contents Add to my manuals Add.

Chapters Dgr Mototrbo Repeater Professional digital two-way radio system repeater 39 pages. Professional digital two-way radio system mototrbo slr series repeater pages.

Base station, repeater and receiver for analog conventional, and trunking systems 79 pages. Computer Software Copyrights No duplication or distribution of this document or any portion thereof shall take place without the express written permission of Motorola. Page 3 Document History The following major changes have been implemented in this manual since the previous edition: Limited Warranty Product Accessories One 1 Year Motorola, at its option, will at no charge either repair the Product with new or reconditioned partsreplace it with a new or reconditioned Productor refund the purchase price of the Product during the warranty period provided it is returned in accordance with the terms of this warranty.

Page 6 Warranty service 66175 be provided by Motorola through one of its authorized warranty service locations. Page 8 viii Commercial Warranty Notes Page 16 Repeater Description Notes Page 19 When damaged parts are replaced, identical parts should be used. Page 22 Preventive Maintenance Notes