[R-1051] 5 mhz standard

[Jan Skirrow]

Hi Geoff ...

When I built my distribution box for the 10MHz sig I included a 2/1 
divider and output drivers at 5MHz. It didn't work with my R1051s, and 
after some pondering, I put it into "future projects." The output of my 
distribution box is anything but a nice sine wave, and most of the 10MHz 
inputs it drives require only a sharp leading edge to trigger and lock 
the internal clock generator. I think the R1051 needs a more civilized 
signal. As this was a secondary objective of my Z3801 project, I didn't 
pursue it as a priority. Instead, I figured out how to get my 5MHz 
internal standards working properly! One day though ...

The R1051 frequency standards are very nice when they are working as 
intended. I project build mostly at microwave frequencies, so it was 
important to have my various counters etc driven by the same very 
accurate standard. The Z3801 was perfect for that.

Jan

Geoff Fors wrote:
> Jan, did you ever determine a suitable divider / pre-scaler to use with the
> Z3801 (10 MHz) HP GPS standard so that it could be the "master" to run the
> (5 MHz) R-1051's from an external reference?
>
> I have a URQ-10 which I can not get to start most of the time, and am still
> trying to find a manual for it, but in the meantime the idea of slaving my
> several R-1051's to a 5 MHz external GP-disciplined standard sounds
> attractive.
>
> Geoff
> WB6NVH
>
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