> Le 14 mars 2015 à 19:01, Pete Stephenson <[email protected]> a écrit : > > On Sat, Mar 14, 2015 at 12:56 PM, Mike Cook <[email protected]> wrote: >> >> >>>> If true, what is the maximum current that can be >>>> safely supplied by the pin? As above, is it safe to use a >>>> non-rechargeable battery like a CR2032? >>> >>> I have a couple of UT+ receivers which were not equipped with batteries and >>> I used a CR2032 for backup without any issue. They were disconnected >>> sometimes for considerable periods on a number of occasions and the saved >>> data was always accessible on power up. I don’t know how long a battery >>> like that lasts. I have one, powered off, still with the battery in circuit >>> that I pulled in 12/2010. Hmmm. might be worth powering it on to see. >>> >> >> Well, I dug it out and checked the voltage across the CR2032. Down to >> 2.8volts after 4yrs 3mths. Connected up the receiver ad powered up. >> It came up in position hold mode with the coordinates that were stored in >> 2010. 1PPS is on but I am only seeing 2 sats and am not to sync’d to UTC. I >> think the almanac may be no good. I’ll leave it a while and see if t >> recovers. >> >> Anyway. Using a CR2032 is OK, at least with my hardware and you get backup >> for at least 4 years. > > Fantastic. Just what I wanted to hear. Thanks for checking.
Probably was a bad almanac . Maybe in testing, Motorola hadn’t figure the receiver could be off for years . I had to reset the receiver. But OK after that. BTW that was firmware 3.2. > > Also, my apologies for sending a blank reply to the list a moment ago. > > -- > Pete Stephenson > _______________________________________________ > 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.
