[time-nuts] Measuring Rubidium frequencies
Jim Robbins
jsrobbins at earthlink.net
Fri Jun 6 13:01:48 UTC 2008
Hi all,
I have a problem which I am unable to understand and need some help. I have two M100 Rubidiums, a Racal 1992 counter, a factory standard T'Bolt and a Symmetricom Starloc II. When I set up either GPSDO as the External Timebase for the 1992 and measure either Rubidium, I get the same reading of 9.99998278. When I use the 1992's Internal Timebase, I get 9.99999995. All equipment has warmed up. The antenna is a Symmetricom HP 58532A on the roof. On a few occasions I have seen the frequency drift up to 0.00001722. I would have expected that both Rubies would have read 0.00000000. Any ideas would be much appreciated.
many thanks,
Jim Robbins
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