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FLEX-1500
FlexRadio Systems FLEX-1500 Service Manual
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Revision 1.0
Copyright FlexRadio Systems, 2010-2011
Appendix "A"
Schematic, PTRX (T
ransceiver) Board
16
18
Table of Contents
Contents
2
Introduction
3
Front View - FLEX-1500
3
Theory of Operation
4
Power Systems and Distribution
4
Control Busses
7
SPI Bus
8
RF Signal Processing
8
Baseband Processing
9
Communications
9
Audio Amplifier
10
Alignment, Test and Calibration
11
Bias Adjustment
11
Power Supply Setup
11
Test and Calibration
12
Required Test Equipment
12
Open Powersdr 2.0
13
Troubleshooting and Diagnostics
14
Assembly and Disassembly
15
Required Tools
15
Re-Assembly
15
Fuse Replacement
16
Schematic, PTRX (Transceiver) Board
17
System Block Diagram
18
Flex-1500 Trx Board
18
Flat Cable Assignments
19
Front End
19
Mike Connector Assignments
31
Flexwire Assignments
31
Spi (Dds) Bridge Assignments
31
Schematic, PPA05 (RFPA) Board
32
Relay Switched Low Pass Filter Bank
33
Rf Power Amplifier
34
PC Board Component View
38
Test Points
42
Test Fixture
44
Flex-1500 Test Fixture
45
Audio and Switching Test Cable
45
RF Connections
46
Board to Board Jumper Cable
47
Bill of Materials
48
Ptrx - Flex1500 Receiver / Exciter Board
49
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FlexRadio Systems FLEX-1500 Specifications
General
Brand
FlexRadio Systems
Model
FLEX-1500
Category
Transceiver
Language
English
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