Oh I did not realize it had batteries in it. I need to check mine or whats left of it. Always seemed to take a while to come up.
On Mon, Oct 25, 2010 at 9:05 PM, Brian Kirby <[email protected]>wrote: > I had a problem with a Z3801A GPSDO. I added a backup battery to the > Motorola Oncore VP receiver, so it could store GPS satellite almanacs (makes > the unit come up a lot faster from an unpowered state). I used common 1.5 > volt AA alkaline batteries, two in series to the receiver. Worked great. > > The Z3801A started losing lock at random and when I was around to witness > it, it was the GPS receiver. I opened the unit up to check it and found one > of the batteries had leaked and was corroding to the other battery lead. I > cleaned the corrosion out and replaced the battery holder with another > holder, and new batteries and the unit is back up solid. > > I had dated the batteries, they were over 7 years old, and they were dated > to "expire" in 2008. Of course, I could not see that from the outside of > the box. > > Brian - KD4FM > > On 10/25/2010 7:41 PM, paul swed wrote: > >> Suggest a 100K thats 33 ua and at least 10 to 60 X more then the memory >> draws. >> Memories in standby draw 1 ua or even far less these days. >> The fact that the battery is at 3.44 and 3.2 suggests it may be fine. >> I just repaired the front panel of a sig gen and the diode was shorted >> draining the battery to zero because it was feeding lots of other stuff. >> Gud luc >> Paul >> WB8TSL >> >> On Mon, Oct 25, 2010 at 7:32 PM, J. Forster<[email protected]> wrote: >> >> Certainly could be, but it seems a reasonable first thing to check before >>> tearing into the unit. >>> >>> FWIW, >>> -John >>> >>> ==============bv >>> >>> 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 >>>> 732-886-5960 office >>>> 908-901-9193 cell >>>> >>>> -----Original Message----- >>>> From: [email protected] [mailto:[email protected]] 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? >>>> >>>> -John >>>> >>>> ========== >>>> >>>> >>>> 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. >>>>> >>>>> Thanks, >>>>> >>>>> Corby Dawson >>>>> ____________________________________________________________ >>>>> SHOCKING: 2010 Honda Civic for $1,734.09 >>>>> Is this price real? YES! We reveal the TRUTH! >>>>> http://thirdpartyoffers.juno.com/TGL3141/4cc60781dcc8a5aca4m04duc >>>>> >>>>> _______________________________________________ >>>>> time-nuts mailing list -- [email protected] >>>>> To unsubscribe, go to >>>>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>>>> and follow the instructions there. >>>>> >>>>> >>>>> >>>> >>>> >>>> _______________________________________________ >>>> time-nuts mailing list -- [email protected] >>>> To unsubscribe, go to >>>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>>> and follow the instructions there. >>>> >>>> >>>> >>> >>> >>> _______________________________________________ >>> time-nuts mailing list -- [email protected] >>> To unsubscribe, go to >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. >>> >>> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> >> > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
