Hi Bob,
I have a HP5350B with the oven (probably standard) continuously
powered. The Racall-Dana is with a OCXO that I have added. The Racall has a
phase comparison between A-B inputs.
I am just comparing 10 MHz frequencies. I see one cycle drift in
greater than 100 seconds to 10 minutes, painful to watch and adjust!
Raj
At 07-02-10, you wrote:
>Hi
>
>Which HP counter(s) do you have?
>
>The method you are using now with a scope can give you good accuracy if your
>clocks are close to each other and you watch things for a long enough time.
>
>Bob
>
>
>On Feb 7, 2010, at 10:04 AM, Raj wrote:
>
>> Hi! all Time-Nuts,
>>
>> For a newbie like myself at GPSDO & Rb oscillators etc. what method
>> of frequency comparison would you gurus recommend ? Any articles on this
>> subject ?
>>
>> Available test instruments are: Scopes digital & Analog, counters
>> with 0.01 Hz display at 10 Mhz (HP & Racall-Dana).
>>
>> Currently I am comparing the phase between two 10 Mhz and adjusting
>> for the lowest drift visually on the scope and phase drift on the
>> Racall-Dana 1992.
>>
>> Your suggestions I would like to use for calibrating the Rb
>> oscillator with a GPSDO.
>>
>> Regards
>>
>> --
>> Raj, VU2ZAP
>> Bangalore, India.
>>
>>
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>
>
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--
Raj, VU2ZAP
Bangalore, India.
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