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DM 15L keypress problems
02-14-2016, 11:56 PM
Post: #21
RE: DM 15L keypress problems
(02-12-2016 11:12 AM)rflesch Wrote:  Another DM15L keypress issue:
If I type the same key very fast several times, only every other keypress is registered by the calculator ( firmware V19). So, for example, "666666" becomes "666". (On my HP12CP I can type as fast as I want to and every keypress is registered.)
I sent an email to SwissMicros about this; I believe the problem comes from what is called "KEYTIME" for the 50g. I have proposed that this parameter should be made accessible (and changeable) using the serial console.
Roman

I presume this is with the speed set to 12MHz? I get something of this sort at 12MHz, but it disappears at 48MHz.
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02-17-2016, 08:40 PM (This post was last modified: 02-17-2016 08:41 PM by rflesch.)
Post: #22
RE: DM 15L keypress problems
It's true that the minimum time interval required between two keystrokes is shorter in the 48MHz mode of the DM15L; for me it's still problematic because it slows me down while typing even in the fast mode.
I have sent a report to SwissMicros. It's the ONLY element where the HP15cLE is still better than the DM15L.
Roman
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02-18-2016, 01:42 PM
Post: #23
RE: DM 15L keypress problems
UPDATE: I reported the "fast-type" keystroke loss issue to SwissMicros. They suggested that I remove the battery and short-cut the calculator. I'm happe to report that this simple step removed all problems regarding lost keystrokes immediately.
I know it's the very first thing I should have done before going public with this issue, but I thought it's a firmware problem, similar to the random key press losses that are observed with firmware v16.
SwissMicros is a company with excellent customer service.
Roman
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02-18-2016, 04:11 PM (This post was last modified: 02-18-2016 04:16 PM by BarryMead.)
Post: #24
RE: DM 15L keypress problems
(02-18-2016 01:42 PM)rflesch Wrote:  UPDATE: I reported the "fast-type" keystroke loss issue to SwissMicros. They suggested that I remove the battery and short-cut the calculator. I'm happe to report that this simple step removed all problems regarding lost keystrokes immediately.
I am curious did you mean to say "Short-Out" (As in short battery Plus to battery Minus to drain any capacitors before replacing the battery) instead of "short-cut"?
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02-18-2016, 06:42 PM
Post: #25
RE: DM 15L keypress problems
Yes, sorry, that's what I wanted to say. Thank you.
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02-23-2016, 05:02 AM
Post: #26
RE: DM 15L keypress problems
(02-12-2016 11:06 AM)rflesch Wrote:  I can scratch off the yellow labels easily

The modeling crowd uses clear-coat finishes to protect the final paint job on their models. A matte finish would probably do fine, and it's be easy to apply if you can disassemble to remove the key pad from the openings of the key plate.
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06-30-2016, 07:09 PM
Post: #27
RE: DM 15L keypress problems
(02-18-2016 01:42 PM)rflesch Wrote:  UPDATE: I reported the "fast-type" keystroke loss issue to SwissMicros. They suggested that I remove the battery and short-cut the calculator. I'm happy to report that this simple step removed all problems regarding lost keystrokes immediately.
I know it's the very first thing I should have done before going public with this issue, but I thought it's a firmware problem, similar to the random key press losses that are observed with firmware v16.
I was growing concerned about that key press loss problem when typing quickly on my 16L (I don't use the 15L nearly as often), which had become worse after I upgraded to v21, and I found your message. I gave it a try and, sure enough, no more key problem.

*** Wow, that's a relief ! *** Let's add a smiley to emphasize : [Image: happy-142.GIF]

I wonder how all this unnecessary worrisome issue started, since it can be fixed so easily.
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07-11-2016, 08:33 AM
Post: #28
RE: DM 15L keypress problems
I have the keystroke problem at 12MHz. Fast 3x typing a number often leads to just 2 numbers. At 48MHz problem disappears. I will send an email with a video to Swissmicros.
DM-15L M1B v21, S/N# 00039

-Ljubo


HP-15C, HP-15C LE, DM-15L, HP-35S
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07-14-2016, 11:08 PM
Post: #29
RE: DM 15L keypress problems
(07-11-2016 08:33 AM)ljubo Wrote:  I have the keystroke problem at 12MHz. Fast 3x typing a number often leads to just 2 numbers. At 48MHz problem disappears. I will send an email with a video to Swissmicros.
DM-15L M1B v21, S/N# 00039

-Ljubo

Same here with a just purchased DM-15L (M1B V21 S/N# 01248). At 48 MHz it works flawlessly.

A question, the ON+1/x string reports, after the battery voltage, the letters "RTC". What do they mean? Evenmore, there's a piezo buzzer inside. I suppose that RTC means "Real Time Clock" and that both it and the buzzer are used in the DM-41L incarnation of this hardware but, are any of them accessible from the 15L software?

Regards.

C├ęsar - Information must flow.
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07-14-2016, 11:46 PM
Post: #30
RE: DM 15L keypress problems
(07-14-2016 11:08 PM)emece67 Wrote:  A question, the ON+1/x string reports, after the battery voltage, the letters "RTC". What do they mean? Evenmore, there's a piezo buzzer inside. I suppose that RTC means "Real Time Clock" and that both it and the buzzer are used in the DM-41L incarnation of this hardware but, are any of them accessible from the 15L software?

Through the serial console: http://www.hpmuseum.org/forum/thread-564...l#pid50492

Dave
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