Datum Systems PSM-500L - Page 7

PSM-500/500L/500LT SCPC Satellite Modem Table of Contents
PSM-500/500L/500LT - Rev. 0.91
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3.6.1 L-Band BUC Control ................................................................................................... 3-32
3.6.2 L-Band LNB Control ................................................................................................... 3-32
3.7 Data Interface Clock Options ............................................................................................... 3-32
3.7.1 VSAT Mode ................................................................................................................ 3-32
3.7.2 SCPC Mode ................................................................................................................ 3-33
3.7.3 Transmit Interface Clock Auto Mode .......................................................................... 3-33
3.8 Automatic Uplink Power Control (AUPC) Operation ............................................................ 3-33
3.9 Demodulator Receive Data FIFO Operation ........................................................................ 3-35
3.10 Built-in 1:1 Redundancy Mode Operation .......................................................................... 3-36
3.10.1 Setting Up 1:1 Redundancy Mode ........................................................................... 3-37
3.10.2 Operating 1:1 Redundancy Mode ............................................................................ 3-38
3.10.2.1 Forcing a Transfer Switch in 1:1 Redundancy Mode ...................................... 3-38
3.10.3 Removal and Replacement of Units in Redundancy Mode ..................................... 3-39
3.11 Bit Error Rate Test (BERT) Set Operation ......................................................................... 3-39
3.12 Analog Monitor Output Operation ...................................................................................... 3-39
3.13 Storing and Recalling Configuration .................................................................................. 3-40
3.14 Automatic Configuration Recovery - ACR ......................................................................... 3-40
3.15 Special Control Mechanisms ............................................................................................. 3-41
3.15.1 Power-Up Behavior .................................................................................................. 3-41
3.15.2 Monitors and Outputs ............................................................................................... 3-41
3.16 Burst Mode Operation ........................................................................................................ 3-41
Chapter 4 - Maintenance .................................................................................................................... 4-1
4.0 Periodic Maintenance ............................................................................................................ 4-1
4.0.1 Internal Reference Calibration ...................................................................................... 4-1
4.1 Common Test Procedures ..................................................................................................... 4-1
4.1.1 Loop-Back Testing ........................................................................................................ 4-1
4.1.2 Using the Built-in BERT ................................................................................................ 4-3
4.2 Troubleshooting ..................................................................................................................... 4-4
4.2.1 Onboard Diagnostic Indicators ..................................................................................... 4-6
4.2.2 Onboard Processor Power-On Sequence and Diagnostics ......................................... 4-7
4.2.3 Built-in Lamp Test ......................................................................................................... 4-7
4.3 Updating Modem Software .................................................................................................... 4-7
4.3.1 Update Software Installation – ..................................................................................... 4-9
4.3.2 Performing the Software/Firmware Update – ............................................................. 4-10
4.4 Upgrading the Modem Feature Set ...................................................................................... 4-14