[time-nuts] Isotemp OCXO trimpot question...

Rex rexa at sonic.net
Tue Aug 28 20:58:50 EDT 2012


Read more carefully, Bob. It was a joke based on a typo.


On 8/28/2012 5:44 PM, Bob Camp wrote:
> Hi
>
> I wouldn't go to crazy digging up a 10K pot. I suspect that anything in the 10K to 50K range will work ok.
>
> Bob
>
> On Aug 28, 2012, at 8:24 PM, jmfranke<jmfranke at cox.net>  wrote:
>
>> Now I need to find a 10 KW potentiometer!
>>
>> John
>>
>> --------------------------------------------------
>> From: "Jerry"<jsternmd at att.net>
>> Sent: Monday, August 27, 2012 8:10 PM
>> To: "'Discussion of precise time and frequency measurement'"<time-nuts at febo.com>
>> Subject: Re: [time-nuts] Isotemp OCXO trimpot question...
>>
>>> I don't know if the list allows attachments but I tried to attach to this
>>> email a datasheet for a very similar Isotemp 10Mhz OCXO (Model OCXO134-10;
>>> PN 6624.00002).   Just in case the attachment doesn't come thru here is the
>>> relevant section.
>>>
>>> I am not certain whether the pins are the same as your model but I believe
>>> all the Isotemp OCXO have same arrangement:
>>>
>>> 3. ELECTRICAL FREQUENCY ADJUSTMENT
>>> 3.1. Range>  ±0.45 PPM
>>> <  ±1.2 PPM (At time of shipment) (Referenced
>>> to nominal frequency)
>>> 3.2. Control 0 VDC to Vref (0 VDC to +8 VDC ) or a 10 kW
>>> potentiometer connected between pins 2 and 4 with wiper connected to pin 3.
>>> 3.3. Slope Positive
>>> 3.4. Center Vref/2 ±10% of Vref (+4 VDC to +0.8 VDC)
>>>
>>>
>>> Jerry
>>>
>>>





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