[time-nuts] PM6681 PROMs v109

[Azelio Boriani]

The 3V cell is a BR2032 190mAh 20x3.2 [mm] (page 7-8 of the service manual).

On Sat, Nov 14, 2020 at 12:11 AM ew via time-nuts
<time-nuts at lists.febo.com> wrote:
>
> Having contacted several time nuts off list to cut down traffic but no response will some one tell me the battery number  covered   and number of cells so I am properly prepared to exchange.                                          Thanks   Bert   Kehren   In a message dated 11/13/2020 4:37:29 PM Eastern Standard Time, rexa at sonic.net writes:
> I have a Fluke PM6681 Counter On the ko4bb site there is an image of the counter's v1.05 PROMs. I just pulled the v1.09 PROMs from my counter and read out the contents. I have placed the result here:http://www.xertech.net/pm6681/Fluke_PM6681_Counter_PROM_v109.zip Anyone interested, please download. If you see any issues or improvement suggestions, please let me know.  If all is well in a few days I'll look into uploading this to ko4bb. ---- Back story below ----I have been following and participating in the thread "Frequency Counter Choice". There has been a long discussion about the PM6681/Cnt-81 counter, mostly about saving and restoring one calibration parameter that gets lost if the internal backup battery dies. A method was described, but currently seems unresolved if the restore method works as hoped. This promped me to open my PM6681 and ensure the battery was good. Having done that, I knew about the v1.05 PROM image but had never seen a v1.09 image. I decided to unplug the AC power and carefully remove the two v1.09 PROMs from my counter. I read out their contents with a reader/programmer tool I have. I returned the PROMs to my counter, applied AC, and the counter seems to be working fine. The link provided above is my sharing of the results of this exercise.  _______________________________________________time-nuts mailing list -- time-nuts at lists.febo.comTo unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.comand follow the instructions there.
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