2.1.2 Transceiver.........................................................................................................................34
2.1.2.1 Digital Section...................................................................................................... 35
2.1.2.2 Transmitter Path................................................................................................... 35
2.1.2.3 Receiver Path.......................................................................................................35
2.1.2.4 Frequency Generating Section.............................................................................36
2.1.3 Global Positioning System, Bluetooth, and Global Navigation Satellite System Section...37
Chapter 3:  Programming the Radio.................................................................................38
Chapter 4: Test Setup and Testing................................................................................... 39
4.1 Typical Test Setup............................................................................................................................39
4.2 Alternative Test Setup...................................................................................................................... 40
4.2.1 Assembling Procedures for Alternative Test Setup............................................................ 41
4.2.2 Disassembling Procedures for Alternative Test Setup....................................................... 42
4.3 Test Check List.................................................................................................................................43
4.3.1 Transmitter Tests................................................................................................................45
4.3.2 Call Processing Tests.........................................................................................................45
4.3.3 Duplex Test........................................................................................................................ 45
4.4 Configuring IFR 3901/IFR 3902/IFR 3920 Setup.............................................................................46
4.5 Configuring IFR 2968 Setup............................................................................................................ 47
4.6 Configuring IFR 3901/IFR 3902/IFR 3920 Manual Screen Test...................................................... 48
4.7 Configuring IFR 2968 Manual Screen Test...................................................................................... 49
4.8 RF Tests...........................................................................................................................................50
4.8.1 Testing Receiver using IFR 3901/IFR 3902/IFR 3920........................................................50
4.8.2 Testing Receiver Using IFR 2968.......................................................................................50
4.8.3 Testing Transmitter Using IFR 3901/IFR 3902/IFR 3920................................................... 50
4.8.4 Testing Transmitter Using IFR 2968...................................................................................51
4.9 Call Processing Tests.......................................................................................................................51
4.9.1 Talk Back Using IFR 3901/IFR 3902/IFR 3920.................................................................. 51
4.9.2 Talk Back Using IFR 2968..................................................................................................52
4.9.3 Call to Mobile..................................................................................................................... 52
4.10 Digital Duplex Test (Tx) Using IFR 3901/IFR 3902/IFR 3920........................................................ 52
4.11 Digital Duplex Test (Tx) Using IFR 2968........................................................................................ 53
4.12 Manual Mode Testing.....................................................................................................................54
4.12.1 Testing in DALT Mode...................................................................................................... 54
4.12.2 Testing Charger Recognition............................................................................................63
4.13 Service Flowchart.......................................................................................................................... 64
Chapter 5: Maintenance.....................................................................................................65
5.1 Preventive Maintenance.................................................................................................................. 65
5.2 Safe Handling of CMOS and LDMOS Devices................................................................................ 66
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