DOC 6501_Release V
ATS-6501 Users Guide
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3.3.3 GPS Firmware Updates
Updating the firmware on the GPS receiver requires that the GPS receiver be removed from the
system, updated, and reinstalled. The GPS Firmware version can be checked using the status
gps:model command.
ATS-6501>status gps:model
[hw_version] OEMV3G-4.01-X2T
[name] L12LV
[serial_number] DAB08410131
[sw_version] 3.701
[OK] 2013-08-05T21:07:04Z
3.3.4 Declassifying the System
Some users may require that the ATS-6501 be declassified before shipping the system to a new
location. Doing this involves removing all non-volatile memory from the unit. Power the system
down and press lightly on the SD Card in the slot on the front panel. This will release the SD
Card. Simply remove the flash disk from the front panel. The flash disk must be destroyed per
the user’s standard security procedures. A new flash disk can be obtained from Microsemi.
NOTE: The SAASM version must also be zerozed if the Crypto Keys are loaded into the GPS
receiver. Power on the unit, ensure the KEY STATUS LED flashes at a 5 Hz rate for one second
to ensure the GPS receiver monitor and status LED are working properly. If the Key Status LED
is solid green, press the zeroize button and ensure the KEY STATUS LED turns off indicating
there are no longer keys in the GPS receiver.
3.4 User Interfaces
Software interfaces on the ATS-6501 are limited in their ability to provide users with real-time
control. Adjusting some system parameters during operation of the ATS-6501 can seriously
impact the timing performance of the unit and therefore the ability to adjust these parameters is
limited by the software. Once properly installed, the ATS-6501 serves as a stand-alone device
which requires little to no interaction. Remote error monitoring capabilities are provided as a
means to ensure that the unit is powered and operating properly.
3.4.1 Operating System
The ATS-6501 operates a modified version of FreeBSD. FreeBSD is a Berkeley derivative of the
UNIX operating system and largely equivalent to other UNIX operating systems.
3.4.2 Telnet
One advantage of accessing the ATS-6501 via telnet is that multiple telnet sessions may be active
at once. It is recommended that users connect directly to the desired port based on the function(s)
they are going to perform.
• 1135 Real Time Logging
• 1700 Command
• 1800 Diagnostics
• 1900 Status
• 2100 Average TIC Data (4393A Card)
• 2101 Raw TIC Data (4393A Card)
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