[time-nuts] HP 5372A vs. 5370A

[Ed Palmer]

I don't understand why you need something like the 537x counters for 
long-term measurement.

The 200 ps resolution of the 5372A gives you a noise floor of about 
5e-14 @ 4000 seconds.  Something like the Pictic II gives you better 
resolution at a fraction of the size, heat, noise, and power.  Even a 
Racal-Dana 1992 with it's 1 ns resolution gives you 2.5 e-13 @ 4000 
seconds and it gets better as Tau increases.

Am I missing something?

Ed

Bob Camp wrote:
> Hi
>
> The  5371 / 5372 are never going to be as popular as the 5370 in terms of people needing support. They just aren't that common. 
>
> Getting binary dumps into one of the software packages would be very nice. The rest of the stuff is much further down my list. Without a binary dump, you can't do anything that runs over a long period of time. I'm not sure what HP really wanted you to do in that case. They may have planed a PC software package and then not followed through with it. 
>
> Bob