HP Forum Archive 16

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Problem with alarms (HP 41CX) Message #1 Posted by Patrick Jamet on 7 Nov 2006, 7:33 p.m. Hello I bought a HP 41CX recently and I believe that I have a little problem with the alarms because nothing happens when the alarm is due, instead the alarm is only activated when I press ON to shutdown the HP 41. I set an alarm. Wait. The Calculator is ON. Nothing happens. I press ON and then ding dong... Why? It has work at a moment, 2 or 3 days ago, but not any more. Maybe, I set or cleared a flag since. Could you help me ? Many thanks. Patrick

Re: Problem with alarms (HP 41CX) Message #2 Posted by Patrick Jamet on 9 Nov 2006, 8:26 a.m., in response to message #1 by Patrick Jamet Hello! Nobody has an idea of the reason of my problem? Is it a known bug? Thank you. Patrick

Re: Problem with alarms (HP 41CX) Message #3 Posted by Dia C. Tran on 9 Nov 2006, 10:26 a.m., in response to message #2 by Patrick Jamet Your problem seems to be of that a past due alarm. Is it possible that you accidentally set the alarm for a date or time in the past?

Re: Problem with alarms (HP 41CX) Message #4 Posted by Patrick Jamet on 9 Nov 2006, 11:22 a.m., in response to message #3 by Dia C. Tran Indeed, all my attempts end as if the alarms are past dues. But they are not. I tried a dozen times. I tried with Y and Z set to zero, or not. I tried message alarms, control alarms, and conditional alarms. None of them works. The flags set are: 26, 29, 31, 38, 39, 40. Patrick.

Re: Problem with alarms (HP 41CX) Message #5 Posted by Garth Wilson on 9 Nov 2006, 2:24 p.m., in response to message #4 by Patrick Jamet The possibility that you're setting them for a time in the past was a good idea. How are you entering the time? Remeber it's not relative, but time of day. So if it were 10:00 and you want the alarm to activate in a minute and a half at 10:01:30, you enter 10.0130, not .0130 which would have been almost ten hours ago. E-mail address: wilsonmineszdslextremezcom (replace the z's with @ and . )

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