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Discussion of precise time and frequency measurement

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Stable32 Input (Multiplier)

MS
Mark Sims
Sat, Aug 11, 2018 4:35 PM

Also note that Heather can only get/update the FC value (usually( every two seconds.  Occasionally, due to vagaries in the PRS-10 response timing,  you can see two consecutive values in the log that are not the same.

  1. Have any of you ever logged the FC values while at the same time taken precision measurements of PRS10 output phase?

I think that Heather can do that if you use a TICC or counter as an auxiliary input device (/ei command).  In that mode Heather gets the "PPS" and/or "OSC" values from the counter.  Since the FC value is treated as the Heather "OSC" value,  the PPS value would come from the counter (chA on a TICC).  I'll try to do that next week... my TICC and 5370 are doing something else right now.

Also note that Heather can only get/update the FC value (usually( every two seconds. Occasionally, due to vagaries in the PRS-10 response timing, you can see two consecutive values in the log that are not the same. > 2) Have any of you ever logged the FC values while at the same time taken precision measurements of PRS10 output phase? I think that Heather can do that if you use a TICC or counter as an auxiliary input device (/ei command). In that mode Heather gets the "PPS" and/or "OSC" values from the counter. Since the FC value is treated as the Heather "OSC" value, the PPS value would come from the counter (chA on a TICC). I'll try to do that next week... my TICC and 5370 are doing something else right now.