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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