[time-nuts] FE5680 Frequency adjustment voltage range

[Bob Camp]

Hi

The GPSDO should be pretty good at reporting it's own health. Lady Heather and the other programs are very useful to decode the binary "stuff" that the GPSDO's commonly put out. If everything has been on for a week or so, I would trust the GPSDO to be close enough to tell you what's going on.

Bob

On Feb 15, 2010, at 9:46 AM, Raj wrote:

> Thanks Bob, As you guys mentioned its addictive ! 
> 
> I was planning to use these units as a quick frequency reference.. warm up for a short while and then use as reference. My GPSDO seems to be fine! I am comparing the GPSO with the Rb unit.. maybe the GPSO is off ?? this is a one clock, two clocks, three clocks comparison syndrome..
> 
>> There is a lot of data on the small FE rubidiums out there. They appear to have re-packaged the same basic electronics into several different packages. You may want to dig into some of the other models to get a complete idea of what's going on with your unit. 
>> 
>> I would not worry a lot about the trim range until the unit has been on power for at least a month.
>> 
>> Bob
>> 
>> On Feb 15, 2010, at 12:44 AM, Raj wrote:
>> 
>>> 
>>>       In my FE5680, I find that the trimpot for frequency adjust at one end 4.4V. The upper and lower voltages are 4.4 and 5.2 approx.
>>> 
>>>       Does this mean it is at the end of its life?  
>>> 
>>>       There is a 4750 Resistor connected to the low end of the trimpot whose value can be reduced as a solution. Any experiences?
>>> 
>>> Regards
>>> 
>>> -- 
>>> Raj, VU2ZAP
>>> Bangalore, India. 
>>> 
> 
> 
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