-------- In message <e2141e96-9c20-02f0-3225-e228b5676...@rubidium.dyndns.org>, Magnus D anielson writes: >Hi Gilles, > >On 12/29/18 11:28 PM, Club-Internet Clemgill wrote: >> Hi, >> Looking to testing my HP53132A in TIC mode. >> I considered the Time Interval measurement technique: >> The start channel is connected to a 1 PPS signal, and to the stop channel >> though a coax cable (constant delay line). > >Fair enough setup. This is a static test setup which works as long as >you do not lock the counter up to a 10 MHz of the same source as the >PPS, and for all maters not accurate enough, so it's best for the test >for it to be free-running.
Here is another test-setup, which is very revealing about non-white noise in TIC counters: You need a signal generator which can be locked to an external frequency and control the phase of the output signal relative to that external frequency. The HP3336 is a good cancidate. Lock both the counter under investigation and the siggen to the same house standard. Set the siggen to output same frequency as house standard. measure (start=house_std, stop=siggen) and (start=siggen, stop=house_std) for as many siggen phase settings as you have patience for. Plot results, and wonder why you don't get a straight line... -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 p...@freebsd.org | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.