[time-nuts] OXCO Issues

[Bill Riches]

For grins and giggles hook up a decent 12 volt supply - even a 12 v gel cell
for a while and check for drift.

73,

Bill  WA2DVU

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Frederick Bray
Sent: Saturday, May 11, 2013 1:22 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] OXCO Issues

I looked inside the OCXO and didn't see anything obvious.  I didn't pull the
foam out, as I didn't want to destroy everything.

After I re-assembled everything.  I hung my DVM on the 12 volt line that
feeds both the oven and the oscillator.  I watched it vary by almost a 
volt.   I am now beginning to suspect that I should go into the main 
power supply and replace at least the cheaper electrolytic capacitors.  
There are a couple screw terminal units that are quite expensive so I am
hoping to avoid having to buy them.  I will also check for out of tolerance
resistors.  I found several on the other board of the power supply and I
suspect it is a question of heat since all the other resistors I have
checked at random elsewhere in the 5110 are fine.


On 5/10/2013 3:42 PM, Frederick Bray wrote:
> Thanks for the suggestion.
>
> I'll probably pull it and look inside. If it is something simple the 
> problem may be fixable.
>
> Fred
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