1307 RTC accuracy?

[aratti]

What Luciano meant is that body temperature variations will never be as great as ambient.

[sayzer]

What Luciano meant is that body temperature variations will never be as great as ambient.

Comeon aratti!

Get the point there!


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[Bruce]

I dunno. I've left my watch in my truck for several days during winter, and it still kept perfect time. And it gets really cold here in winter...;o}

[sayzer]

I dunno. I've left my watch in my truck for several days during winter, and it still kept perfect time. And it gets really cold here in winter...;o}

The watch must be more expensive then the truck then.


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[skimask]

Same thing here... I've got a cheap watch that's wrapped around my rear view mirror year-round. Except for resetting it twice a year for daylight savings time, it holds time well, and we get wild temp variations up here. (and yes, the watch probably costs more than the car, at least you'd think so if you saw the car )

[Pic_User]

Thanks for the interesting discussion.

This is a handy online ppm calculator:
http://www.maxim-ic.com/tools/calcul...fm/calc_id/rtc

This calculator converts timekeeping accuracy measurements from parts per million (PPM) to real-time accuracy described in seconds per day and minutes per year.

[mackrackit]

The clock radio in my truck keeps good time also. Temperatures a little on the high side in SW Arizona.

I have noticed it will loose a bit of time on long trips. Normal short trips and it is fine.
Maybe it has something to do with speed and how long the speed is maintained changing time.