[time-nuts] Re: FTS1050 out of range

[Tom Knox]

Hi
In the 1050A I looked at recently the 1000B trim pot was not installed. Most likely the board is simply unpopulated and the adjustment is done with the front panel decades. Not sure if the 1050A decade has the same range as the 1000B pot?
Cheers;
Tom Knox
SR Test and Measurement Engineer
Phoenix Research
4870 Meredith Way Apt 102
Boulder, Co 80303
Formerly of:
357 Fox Lane
Superior Co 80027
303-554-0307
actast at hotmail.com

https://www.thedenverchannel.com/news/marshall-fire/superior-man-moving-forward-after-losing-dream-research-lab-during-marshall-fire

"Peace is not the absence of violence, but the presence of Justice" Both MLK and Albert Einstein
________________________________
From: Bob Camp via time-nuts <time-nuts at lists.febo.com>
Sent: Thursday, February 23, 2023 3:47 PM
To: Discussion of precise time and frequency measurement <time-nuts at lists.febo.com>
Cc: AC0XU (Jim) <James.Schatzman at ac0xu.com>; Bob Camp <kb8tq at n1k.org>
Subject: [time-nuts] Re: FTS1050 out of range

Hi

At 0.3 Hz, you are off by 3x10^-8. That’s not very far. Best
guess is that the unit is doing fine. It simply has aged further
than the adjustment range. It is fairly common to design an
OCXO with a range that is adequate for some number of
years. They do indeed “age out”.

No idea if there is a manual adjust internal to the unit.

Bob

> On Feb 23, 2023, at 8:29 AM, AC0XU (Jim) via time-nuts <time-nuts at lists.febo.com> wrote:
>
> I have an FTS1050A/015 that is slightly out of range (frequency too high by 0.3 Hz with front panel adjustment set to 00000).  Does this indicate that something is wrong with the control circuitry or the oscillator, or is there an internal gross adjustment that I can use to reset the range?
>
> Thanks!
> _______________________________________________
> time-nuts mailing list -- time-nuts at lists.febo.com
> To unsubscribe send an email to time-nuts-leave at lists.febo.com
_______________________________________________
time-nuts mailing list -- time-nuts at lists.febo.com
To unsubscribe send an email to time-nuts-leave at lists.febo.com