If some one has a bad one how about opening it and take some pictures. Would be
very informative.
Bert Kehren
In a message dated
7/22/2021 9:59:11 AM Eastern Standard Time, [email protected] writes:
Attached is a plot of EFC versus Frequency of a Vectron pulled from a Tbolt.
EFC is + and -. I suspect that the units are shipped with the EFC set at 0
Volt. Notice 0 Volt Again I suspect the extra pin is there for that purpose.
Bob could tell us but may not want to comment to stay out of trouble.
Bert Kehren
In a message dated 7/22/2021 5:01:10 AM Eastern Standard
Time, [email protected] writes:
On 22/07/2021 08:30, [email protected] wrote:> Message: 1> One
more comment on the Vectron OCXO. My Tbolt shows a tuning voltage of +0.4 Volt
and has 3.6 Hz per Volt. Assuming the OCXO was sold to Trimble with 0 V and my
unit has at least 12 years on it (4380 days) aging is 3.29 E-11 per day. Not
bad for an OCXO.
Bert Kehren
------------------------------------------------------------------------ Hi.
According to Lady Heather, My T'bolt sits with it's DAC at about 0.2V I
always wonder about that. From the above comment, is the DAC output (and VCXO
input I guess) bipolar, as in can range +- some amount from 0V? I've not seen
any schematics for them, so in honesty haven't a clue what it's likely range
is, good bad or indifferent. I did email TVB direct about the possibility of
sourcing another one or two of them, but as he said (and I guessed) he was
swamped with responses. I use mine mainly as a frequency reference, powered on
24/7 Regards to All. Dave G8KBV (In the UK as far as I can tell.) -- Created
on and sent from a Unix like PC running and using free and open source
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