timing synchronization
Having issues with timing on the modallab1 test stand at CIT, where live dtt data times out because of difference in gps timing between the system gps and the models gps. The IO chassis for this test stand is not synchronized with a gps timing, but uses it's internal timing clock in the ADNECO board. After a few days, the difference is more than 1 minute. Right after restarting the models, the difference is about 1 second, see command line below :
controls@modallab1:~$ gpstime -g && cat /proc/gps && caget C1:FEC-1{0,9}_TIME_DIAG -t -f 6
1382477066.767454
1382477066.77
1382477065.000000
1382477065.000000
The iop simulink model parameter block is set with the option no_sync = 1, as per section 7.1.1.2.1.3 Operation without a LIGO standard timing system in T080135.