CERN have flagged another potential issue with the 53230A in that every so
often seemingly randomly communications go hawire.
Bruce
>
> On 10 May 2017 at 04:46 "Richard (Rick) Karlquist"
> wrote:
>
> On 5/9/2017 12:05 AM, Poul-Henning Kamp wrote:
> >
>
> > >
> >
On 5/9/2017 12:05 AM, Poul-Henning Kamp wrote:
I'm sure that modern counters like 53230 are better at this than
The 53230 oven oscillator option in an inferior oscillator to
the 10811, by an order of magnitude. So in this case,
modern != better.
Rick
___
In message <54ee7bdd-0a49-cc49-540d-2812e70dd...@rubidium.dyndns.org>, Magnus
Danielson writes:
>Wither it is proper side bands or other systematic noise, it is bad
>indeed, [...]
It's more subtle than that, it can be things like thresholds in
the counters trigger being sensitive to th
Hi Poul-Henning,
On 05/09/2017 02:39 PM, Poul-Henning Kamp wrote:
In message <60c74d75-41e5-7112-d8b6-721664b89...@rubidium.dyndns.org>, Magnus
Danielson writes:
Indeed. On the other hand some measurements is hard not to do that way.
One should think about how isolation is created if
Hi,
In HP5370A/B you mux sources. In SR620 there is a lockup PLL, as far as
I remember.
Cheers,
Magnus
On 05/09/2017 01:11 PM, Bob kb8tq wrote:
Hi
If you grab the schematic of pretty much any of these counters, you find a
fairly common approach.
Somewhere inside is a VHF oscillator. The in
In message <60c74d75-41e5-7112-d8b6-721664b89...@rubidium.dyndns.org>, Magnus
Danielson writes:
>Indeed. On the other hand some measurements is hard not to do that way.
>One should think about how isolation is created if needed, and this
>includes AC and DC, common mode and differential
Hi
If you grab the schematic of pretty much any of these counters, you find a
fairly common approach.
Somewhere inside is a VHF oscillator. The internal TCXO, OCXO, or Rb acts as a
phase lock source
for that VHF oscillator. Typical PLL bandwidths are pretty low (10’s of Hz).
When you put in an
Hi,
On 05/09/2017 09:05 AM, Poul-Henning Kamp wrote:
In message , Magnus
Danielson writes:
Also, there is a reason that you can buy different internal oscillators,
this is one of them. For labs with their frequency distribution there is
no need to waste money on stand-alone performan
In message , Magnus
Danielson writes:
>Also, there is a reason that you can buy different internal oscillators,
>this is one of them. For labs with their frequency distribution there is
>no need to waste money on stand-alone performance.
Please don't forget that running the counter of
Hi Tom!
On 05/09/2017 03:02 AM, Tom Knox wrote:
Hi All;
How important is the standard, medium, or high stability reference in counters
like the 53230A, or FCA3120 when locked to an ultra low phase noise external
reference? Particularly when making measurements and adjustments on other ultra
Hi All;
How important is the standard, medium, or high stability reference in counters
like the 53230A, or FCA3120 when locked to an ultra low phase noise external
reference? Particularly when making measurements and adjustments on other ultra
high performance references?
I know Agilent sold 5
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