continuously timed ADCs off by aprox. one second
At CIT teststands, as with many other test stands, the timing system is just a function generator with no 1PPS pulse. There seems to be an off-by-one error when synchronizing to these systems, as the difference between ADC time and system time typically starts about one second off.
I think this might be an erroneous correction that's supposed to be applied only to 1PPS systems.