TRAK MODEL 9100 MODULAR FREQUENCY/TIME SYSTEM
3-17
TM4400013 Rev D
3-5.4 Request / Setup Commands
Set/Request Time Format 1 or Time Format 2
This command sets or requests the time format of the TOD output port.
Request mode:
Host sends: SCM <CR>
9100 replies: TIME FORMAT X <CR><LF>
Where: X is 1 for Time Format 1
X is 2 for Time Format 2
Set mode:
Host sends: SCM 1 <CR> (For Time Format 1 (see para. 3-4.1)
SCM 2 <CR> (For Time Format 2 (see para. 3-4.2)
9100 replies: SCM Done
Set/Request user offset and antenna delay compensation
This command provided the user to offset the GPS 1 PPS reference for antenna delay compensation and to
offset the GPS 1 PPS from UTC.
Request mode:
Host sends: X.SDC<CR>
9100 replies: X.SDC suuuuuuuuu,aaaaaa<CR><LF>
Where: suuuuuuuuu is the signed user offset in nanoseconds up
to 500000000ns
aaaaaa is the antenna delay compensation in nanoseconds
up to 999999ns
X is described on command summary page
Set mode:
Host sends: X.SDC suuuuuuuuu,aaaaaa<CR>
9100 replies: X.SDC DONE<CR><LF>
Where: Same as for SDC request mode
WARNING: Time accuracy is degraded if incorrect offset or antenna delay compensation is entered.
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