[time-nuts] SRS SR620 counter problem
mfeher at eozinc.com
Mon Oct 25 23:29:51 UTC 2010
I expect that it is a Lithium cell, so the voltage is correct. Although,
testing it with a 1K load may not be fair as in real service I believe they
only provide microamps. Regards - Mike
Mike B. Feher, EOZ Inc.
89 Arnold Blvd.
Howell, NJ, 07731
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of J. Forster
Sent: Monday, October 25, 2010 7:18 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] SRS SR620 counter problem
What's the battery nominal voltage supposed to be?
> Hi everyone!
> My SR620 is giving me an error 3 on power up. The manual says it's most
> likely a dead backup battery.
> I can clear it if I hold down the reset button while powering up. (This
> loads the factory defaults into the RAM.)
> However if I cycle power the error 3 comes back!
> The battery reads 3.44VDC and at the VCC pin of the Ram you get 3.20VDC
> with the AC power off.
> This seems to indicate the battery is good.
> I'm thinking of placing a 1K resistor across the battery to see if a load
> will cause a big drop.
> Any suggestions?
> The RAM is a CXK58257AP-70L.
> Corby Dawson
> SHOCKING: 2010 Honda Civic for $1,734.09
> Is this price real? YES! We reveal the TRUTH!
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