The 70k SA should work fine. Just warm it up, set it for center freq.
10.000000 MHz, span 5 or 10 kHz. Feed in the 10 MHz reference and power the
cold 8720 up. If it comes up near centered in a few seconds and does not
change much, you have a TCXO. If way off frequency and drifting towards 10
MHz, it's an OCXO.
How is it that a time-nut does not have a counter? (just kidding).
----- Original Message -----
From: "Dr. David Kirkby (Kirkby Microwave Ltd)"
<drkir...@kirkbymicrowave.co.uk>
To: "Discussion of precise time and frequency measurement"
<time-nuts@febo.com>
Sent: Sunday, September 28, 2014 9:43 PM
Subject: Re: [time-nuts] What sort of oscillator is this?
On 29 Sep 2014 02:05, "Tom Miller" <tmiller11...@verizon.net> wrote:
Dave, do you have access to a good counter?
Not really.
I have an HP 70000 modular measurement system, which has all the bits for
a 22 GHz spectrum analyzer. The analyzer has a frequency counter mode, but
I have not written any software to grab data from it.
However, I once had a contract where I wrote some code to collect data
from another HP 70000 system, so it should be a fairly easy thing to do.
I
am not sure how well it works as a frequency counter.
I do have an 18 GHz counter, but it doesn't have a high stability
oscillator, has no GPIB and has an intermittent fault.
The 70000 series has the optional high stability time base, which is
definitely an oven. A red light comes up when the oven is cold.
BTW, for the 70000 series you need to have the oven in order to lock the
system to an external reference. One of the options for the high
stability
time base is to delete the oven. Strangly some eBay sellers have been
known
to have both and ask more for the one which has the option which deletes
the oven!
If so, you could profile the warm-up characteristic of the reference from
a cold start.
I will try to do that. It might take me a bit of time as I need to do some
things that earn me money. They are of somewhat higher priority!
Dave
_______________________________________________
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
_______________________________________________
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
