Re: Recognizing HP 41 model (C, CV or CX) Message #2 Posted by Vieira, L.C. (Brazil) on 23 Sept 2005, 5:04 p.m., in response to message #1 by Francis
Hi;
one of the simplest tests to recognize the existence of the timer module is by pressing [SHIFT][ON] after having the calculator turnned on ([SHIFT] is the golden key, that activates the SHIFT indicator in the display). If it simply turns itself off after the [SHIFT][ON], then it is surely not an HP41CX or it has a bad time module. Also, try [SHIFT][CAT][2]. You should see:
[TIME FCN 2_ ] (the underscore represents the version indicator)
[CX TIME FCN ]
[EXT FCN 2_ ]
[CX EXT FCN ] Any other HP41 (C or CV) will do nothing after CAT 2, unless it has a ROM module plugged in or, if hacked, an internally connected extra ROM.
Hope this helps.
Luiz (Brazil)
Edited: 23 Sept 2005, 5:05 p.m.
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