Lux, Jim (337C) wrote:
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Ed Palmer
Sent: Thursday, August 27, 2009 12:06 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Couple of questions for Racal
I should of added
Yes, It's normal for phase measurement to be 3 counts OR anything else
depending on the frequency you are measuring.
The unit measures Time delay to 1ns, and calculates Phase which can be any
number depending on Freq.
Use Time interval not phase to see what the noise is.
My
> -Original Message-
> From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
> Behalf Of Ed Palmer
> Sent: Thursday, August 27, 2009 12:06 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] Couple of questions for
Thanks for the info Antonio. Racal didn't spec the warmup
characteristics of the counter as a whole and it seemed a little odd
that the warmup drift for the counter was as large as 10 days of
oscillator drift.
Ed
iov...@inwind.it wrote:
I have two 1992, and actually one has to terminate the
I have two 1992, and actually one has to terminate the output to see the real
waveform.
They have both the 04E option, that I believe is a nice one. In long term
measurements, I've found that mine have an aging rate in the range of 1x10E-10
per day, or better (compared to Rb). The crystal is cut
My 1992 has a similarly ugly reference output - until I terminate it.
Then it's a fairly nice square wave between 0 and 1 volt. Rise & fall
times are in the range of 5 ns. The manual doesn't state what the wave
shape is, only that it's > 600 mVp-p into 50 ohms. I have a brochure
that says "T
Just acquired a used 1992 off eBay. Excellent, almost like new with manual
and even spare fuses. I noticed that the internal reference's waveform is
more like a nasty sawtooth than a nice sine wave. Is that normal? Also, when
I hook my GPSDO through a two way splitter and two different length cable
