Motorola ASTRO XTS 2500 - Physical Features of the Radio

Table of Contents xvii
6816985H01-B August 16, 2007
7.5.26 PP22 Analog 5V ...................................................................................................................... 7.5-27
7.5.27 PP23 Preselector 1 Output...................................................................................................... 7.5-28
7.5.28 PP24 Low-Noise Amplifier Output...........................................................................................7.5-29
7.5.29 PP25 Preselector 2 Output...................................................................................................... 7.5-30
7.5.30 PP26 Mixer Out (IF) ................................................................................................................ 7.5-31
7.5.31 PP27 Crystal Filter Out............................................................................................................ 7.5-32
7.5.32 PP28 Abacus Analog 3V ......................................................................................................... 7.5-33
7.5.33 PP29 2nd LO Control Voltage ................................................................................................. 7.5-34
7.5.34 PP30 2nd LO VCO Buffer Output............................................................................................ 7.5-35
7.5.35 PP31 Analog 5V DC................................................................................................................ 7.5-36
7.5.36 PP32 Abacus Digital 3V .......................................................................................................... 7.5-37
7.5.37 TX Audio 1 kHz Tone .............................................................................................................. 7.5-38
7.5.38 16.8 MHz Buffer Input and Output........................................................................................... 7.5-39
7.5.39 32.768 kHz Clock Outputs....................................................................................................... 7.5-40
7.5.40 SPI B Data............................................................................................................................... 7.5-41
7.5.41 RX Serial Audio Port (SAP)..................................................................................................... 7.5-42
7.5.42 PP33 SPI Data ........................................................................................................................ 7.5-43
7.5.43 PP34 SPI CLK......................................................................................................................... 7.5-44
7.5.44 PP35 Universal Chip Select .................................................................................................... 7.5-45
7.5.45 PP36 Abacus Chip Select ....................................................................................................... 7.5-46
7.5.46 TP37 RX SSI Data .................................................................................................................. 7.5-47
7.5.47 TP38 RX SSI Clock ................................................................................................................. 7.5-48
7.5.48 TP39 RX SSI Frame Sync....................................................................................................... 7.5-49
7.5.49 TP40 RX SSI Sync B............................................................................................................... 7.5-50
Chapter 8.1 VHF Troubleshooting Tables .......................................... 8.1-1
8.1.1 Introduction................................................................................................................................ 8.1-1
8.1.2 Tables........................................................................................................................................ 8.1-1
Chapter 8.2 UHF1 Troubleshooting Tables ........................................ 8.2-1
8.2.1 Introduction................................................................................................................................ 8.2-1
8.2.2 Tables........................................................................................................................................ 8.2-1
Chapter 8.3 UHF2 Troubleshooting Tables ........................................ 8.3-1
8.3.1 Introduction................................................................................................................................ 8.3-1
8.3.2 Tables........................................................................................................................................ 8.3-1
Chapter 8.4 700/800 MHz Troubleshooting Tables ............................ 8.4-1
8.4.1 Introduction................................................................................................................................ 8.4-1
8.4.2 Tables........................................................................................................................................ 8.4-1
Chapter 8.5 900MHz Troubleshooting Tables .................................... 8.5-1
8.5.1 Introduction................................................................................................................................ 8.5-1
8.5.2 Tables........................................................................................................................................ 8.5-1