www.SwissMicros.com

Received my DM42 in August of 2018 so it's pretty new S/N 3108. No real issues with time keeping. So maybe the design has been tweaked in more recent batches? In my case, it lost time while the dm42 wasn’t in use. It may be something to do when the calc is turned off as opposed to being used very o...

TwoWeims wrote: ↑

Fri May 10, 2019 11:44 pm

I tune my HF rig to WWV and let my DM42 listen to it over night...

You just have to inject some humor into this very serious discussion.

I love the Weimars, I’ve been around them most of my life.

I can confirm that the DM42 clock has a precision in the order of minutes, not seconds. My DM42 is 11 minutes ahead of true time today - I adjusted it several months ago (sorry I didn't record that date). I concur it's a calculator, not a clock, even less a precision clock. Nevertheless (and as men...

Are we talking a few seconds different per month? A few minutes? A few hours? A few days? It's a calculator, not a precision time piece. A little lost time is not an issue. Many minutes over several months. There are precision clock sources driving most microcontrollers (some use the cheesy resonat...

It's really a shame we can't get a reply from the developers on this issue It's not clear that there is an issue, just some vague comments that you think it lost some amount of time over some other amount of time; you noted yourself that you didn't even record it. I suggest you do this, to help cha...

keithdalby wrote: ↑

Thu May 09, 2019 9:16 pm

Issue?

The clock losing time, after no use for an extended period.

It's really a shame we can't get a reply from the developers on this issue

viewtopic.php?f=17&t=2007&p=9673#p9673
It looks like the drifting (RTC) clock issue hasn't been addressed.
I guess this isn't important to anyone.

Since time functions are included in the DM42, a crystal would be very useful to make them accurate. Maybe there's a way to add one ourselves as there was in the HP-45. That calculator had undocumented timer and stopwatch functions but no crystal so the accuracy was terrible. Someone came up with a...

Thanks. It doesn’t make me feel better, but at least it’s confirmation it’s not just my DM-42 experiencing this.
It’s a shame they didn’t add a crystal. The additional cost would have been worth it.