DOC 6501_Release V
ATS-6501 Users Guide
48
g. Use the steer_source command to set steering to the value set in
Config.Measurement[0].Name = "tic1"
steer_source tic1
h. After ~15 minutes seconds the 1PPS on the TIC should read 0 +/- 150ps.
Note: This will be faster or slower depending on the reference clock type set in step 3
i. Check the 10MHz alignment on the scope and measure the offset between the two
inputs.
It is recommended to perform Step 9 each time the unit is restarted. Users will need to switch to
manual, set the time, and then switch back to the selected steer source.,
2.9.3 External Reference
When setting the time manually it is recommended users provide a 1PPS and 10MHz. Users can
select the proper clock type for the 10MHz input using the reference_type command and then
switching to reference external when the system is properly set up. Users will need to edit the
node.cfg (mod/tsc/site) file to use one or more 1PPS references from the 4393A TIC Card an
IRIG input from the 4383A IRIG Input Card as a steer source. (See Appendix F).
2.9.4 Disable the GPS Tracking Alarms
When using the system with manual time recovery users can set the system up to ignore the GPS
Tracking Alarms normally set when the system is not tracking GPS. This can be done by setting
the timeout to ZERO.
ATS-6501> gps_tracking_timeout 0
To confirm the system settings use the settings gps:tracking_timeout command.
6501A_61>settings gps:tracking_timeout
0
[OK] 2015-02-03T19:11:19Z
Warning: Setting the timeout to zero is only recommended with time sources other than GPS.
This setting will inhibit the GPS Tracking alarm even if the unit is using GPS as the time source.
2.10 User Configuration Files
The ATS-6501 provides the flexibility of operating using different user configurations. Users are
able to save these configurations for system settings and ftp | real-time data logging and recall
them when needed via the command port.
2.10.1 Factory / Default User Configuration Files
The ATS-6501 will boot up with the FACTORY configuration settings automatically and will
continue to use these settings until any changes to the configuration are made and saved as the
user default settings (default). To save the user default file simply type save and press enter.
This will save the updated configuration and the ATS-6501 will boot up (either from power on or
after a reboot/restart command) using the settings in the user default file. To see if the user
settings have been saved use the list command to obtain a list of the possible user configuration
files. If there are no user configuration files available the system will report no files.
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