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ITC 220 Base Station, Locomotive & Wayside Radio Transceiver Field Service Guide PN 0046300120 Rev. A
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5.6.2 Verify Cooling Fans Are Operational (Base Station Transceivers Only) ...................................................... 32
5.7 Verify Settings That Allow the Transceiver to Transmit ....................................................................................... 33
5.7.1 Verify Transceiver Calibration Is Locked ..................................................................................................... 33
5.7.2 Verify the Transceiver is Commissioned ..................................................................................................... 34
5.8 Determine and Verify or Set GPS Coordinates (Base Station and Wayside Transceivers Only) .......................... 35
5.9 Transceiver Test and Adjustment Procedures ..................................................................................................... 35
5.9.1 Required Equipment ................................................................................................................................... 35
5.9.2 Measure and Adjust Peak RF Power Output ............................................................................................... 36
5.9.3 Measure Full-Rate Receiver Sensitivity ....................................................................................................... 46
5.9.4 Put a Trace On a Feature ............................................................................................................................ 48
5.10 Managing Software Application Images .............................................................................................................. 50
5.10.1 Determining Software Image Status ........................................................................................................... 51
5.10.2 Updating Software Images.......................................................................................................................... 52
5.10.3 Rolling Back an Image ................................................................................................................................. 56
5.10.4 Maintaining Multiple Software Images in the Transceiver ......................................................................... 58
6 Troubleshooting ............................................................................................................................ 60
6.1 Guidelines for Troubleshooting Common Problems ............................................................................................ 60
6.2 Power Problems ................................................................................................................................................... 61
6.3 SD Memory Card Problems .................................................................................................................................. 61
6.4 Antenna Problems................................................................................................................................................ 62
6.5 Transmission Problems ........................................................................................................................................ 63
6.6 Reception Problems ............................................................................................................................................. 64
6.7 Ethernet Connectivity Problems .......................................................................................................................... 64
6.8 RF Link Problems .................................................................................................................................................. 65
6.9 A Remote Transceiver Does Not Establish an RF Connection to the Base Station Transceiver ........................... 66
APPENDIX A — Abbreviations and Definitions ................................................................................... 68
APPENDIX B — Possible RF Antenna Configurations .......................................................................... 70
B.1 Base Station Transceiver ........................................................................................................................................... 70
B.2 Locomotive Transceiver ............................................................................................................................................ 71
B.3 Wayside Transceiver ................................................................................................................................................. 71
APPENDIX C — Block Diagrams ........................................................................................................... 72
C.1 Base Station Transceiver ........................................................................................................................................... 72
C.2 Locomotive Transceiver ............................................................................................................................................ 73
C.3 Wayside Transceiver ................................................................................................................................................. 73
APPENDIX D — Transceiver Cables ..................................................................................................... 75
D.1 Transceiver Power Cables ......................................................................................................................................... 75
D.1.1 Base Station Transceiver Power Cable .............................................................................................................. 75