If you're using traditional TIC mode (start on chA, stop on chB), the 10
MHz line doesn't matter. If you're in timestamping mode with chA or chB
against 10 MHz, I'm still not sure the 10 MHz line makes any practical
difference.
More generally and for most applications, line lengths aren't an issue
as we're looking for changes in phase over time, not absolute phase. So
as long as the delays are stable, their magnitude doesn't matter much.
Also remember that there are a couple of nanoseconds of potential delay
in the trigger circuits -- that's equal to a couple feet in free space.
John
----
On 10/11/2018 11:08 PM, Chris Burford wrote:
Hello All,
I've just received my new TAPR TICC and have been performing some
initial dry runs against my PRS10.
I have to ask about cable(s) delay and and what is essentially best
practice for the TICC configuration. Is it commonplace to add both
cables (10MHz source and 1PPS) or just the length of the 1PPS cable
alone? I already have the cable delay specs from Times Microwave for
the medium that I'm using.
I would assume that the delay(s) in pico seconds are input to the TICC
as the "Fudge" values? I'm just trying to get most of the bases
covered here for a fair assessment of my RFS.
Any and all comments are appreciated.
Thanks,Chris
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