Symmetricom ATS-6501 Tflex User Manual page 4

3.1.6. Fans ............................................................................................................. 27
3.1.7. Flash Card ................................................................................................... 28
3.1.8. Display Button ............................................................................................ 28
3.2 Rear Panel .......................................................................................................... 28
3.3 Software ............................................................................................................. 29
3.3.1 Current Version ........................................................................................... 29
3.3.2 Software Updates ........................................................................................ 30
3.3.2.1 Flash Card Replacement .......................................................................... 30
3.3.2.2 Remote Software Update ........................................................................ 30
3.3.3 GPS Firmware Updates ............................................................................... 31
3.3.4 Declassifying the System ............................................................................ 31
3.4 User Interfaces .................................................................................................... 32
3.4.1 Operating System ........................................................................................ 32
3.4.2 Telnet .......................................................................................................... 32
3.4.3.1 Real Time Data Port (1135) .................................................................... 32
3.4.3.2 Command Port (1700) ............................................................................. 32
3.4.3.3 Diagnostic Port (1800) ................................................................................. 34
3.4.3.4 Status Port (1900) .................................................................................... 35
3.4.4 File Transfer Protocol (FTP) ....................................................................... 35
3.4.5 Network Time Protocol (NTP) ................................................................... 35
3.5 Status Command ................................................................................................ 36
3.6 Data Logging ...................................................................................................... 36
3.6.1 FTP Data Logging ....................................................................................... 37
3.6.2 Real Time Data Logging ............................................................................. 39
3.7 WAAS Satellites ................................................................................................ 41
3.8. System Verification ............................................................................................ 41
4 Theory of Operations ......................................................................................... 49
4.1 Generation of Timing Signals ............................................................................ 49
4.2 Log Collection .................................................................................................... 50
4.3 Startup Sequence ................................................................................................ 50
5 Maintenance ....................................................................................................... 52
5.1 Internal Inspection .................................................................................................. 52
5.2 Antenna and Antenna Cable Inspection .................................................................. 52
5.3 Fan Filter ................................................................................................................. 53
6. Troubleshooting ................................................................................................. 54
6.1 Front Panel Indications ....................................................................................... 54
6.2 Alarm Light ........................................................................................................ 54
6.2.1 Power Supplies ............................................................................................ 54
6.2.2 Outputs Enabled .......................................................................................... 55
6.2.3 GPS Performance ........................................................................................ 56
6.2.3.1 Poor GPS Receiver Performance ............................................................ 56
6.2.3.2 GPS Not Tracking ................................................................................... 57
6.2.4 Internal Clocks ............................................................................................ 59
6.2.5 External Reference ...................................................................................... 59
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DOC06501_Revision F
ATS-6501 Users Guide