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Forum Index : Microcontroller and PC projects : CMM2 OPTION RTC DRIVE LOW. Losing Time.

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Chopperp

Guru

Joined: 03/01/2018
Location: Australia
Posts: 1106

Posted: 07:20am 30 Aug 2020

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Hi,

I've noticed my CMM2 losing quite a bit of time lately when sitting at idle.

TIME$ gets updated from a GPS timestamp when my test program is up & running so not a problem until I stop for a bit. It relies on a reasonably accurate time to start properly. It was OK a week or so ago.

I did an OPTION LIST & found OPTION RTC DRIVE LOW which I can't get rid of or change. I wanted to change it to see what happens to the timing.

OPTION RTC CALIBRATE didn't improve matters much (running matherp's time test from a while ago)

Can't find any reference to it in the Manual.

Brian.

ChopperP

matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 10580

Posted: 07:24am 30 Aug 2020

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Your options have somehow got corrupted. Use OPTION RESET and then redo your normal settings

Chopperp

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Joined: 03/01/2018
Location: Australia
Posts: 1106

Posted: 07:33am 30 Aug 2020

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Thanks Peter

It was losing 3 seconds every 4 minutes.
Now much much better
Now to do the calibrate again

Brian

ChopperP

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