[time-nuts] FE5680 Frequency adjustment voltage range
vu2zap at gmail.com
Mon Feb 15 14:46:19 UTC 2010
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.
>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?
>> Raj, VU2ZAP
>> Bangalore, India.
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