[time-nuts] KS-24361 EFC Error

Matthias Jelen Matthias.Jelen at gmx.de
Fri Aug 21 14:13:07 EDT 2015


Hi Gerhard,

many thanks for sharing this.

I replaced the OCXO in my REF-1, and now it´s working again. 
Nice to see that I still can use the old OCXO with negative 
tuning voltage.

Regards,

Matthias, DK4YJ
> Am 12.08.2015 um 19:13 schrieb Dave M:
>> I have verified with MTI that the recommended tuning 
>> voltage for model 260-0624-C is 0 to 6V.
>> The datasheet range of -10V to +10V is the available 
>> range of EFC for the entire 260 series, and may or may 
>> not apply to any specific model within the 260 series.
>>
>
> I have measured the tuning behaviour of some MTI and 
> Morion VCXOs.
> The witeup is at:
>
> < 
> http://www.hoffmann-hochfrequenz.de/downloads/VCXO_tuning.pdf 
> >
>
> For the MTIs, the interesting range is indeed 0 to 6V, but 
> they seem to
> work without surprises in the +/- 10V range. So if your op 
> amp delivers a bit
> more or if you think you could use +/- a few extra Hz 
> against ageing:
> that seems ok.
>
>
> 73, Gerhard, DK4XP
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