My faithful HP 5065A Rubidium standard, which had been converted to a “Super” model, developed an intermittent sickness and back it went to Corby Dawson for him to perform his magic. After a realignment and fixing an intermittent connector ground, it’s back in the lab and working well, though minus the “Super” components — Corby found it was working better without than with them.
This post is to provide a baseline status of the unit’s performance.
I set the frequency against the HP 5071A-HP to within a couple of parts in 10-12. Here’s the C-field setting and plots showing the offset and ADEV.
Here are the meter readings:
|Lamp Oven||20||Cell Oven||23|
|Osc. Oven||41||Photo I||31|
|1 MHz||34||100 kHz||0|