HP Forum Archive 20

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WP-34S Revision 1653 Feedback Message #1 Posted by svisvanatha on 2 Oct 2011, 9:49 p.m. I just flashed the Rev 1653 firmware. A few observations: 1. The previous discussion of FIX, SCI, ENG, ALL, setting DECM mode while in Integer mode has been realized. 2. Some good descriptions have been added to the manual - I assume this is Walter's work. Many thanks! 3. With respect to returning to DECM mode. Page 22 of the manual says that [->][H.MS] will return to DECM. However, when I try this from Integer mode, I get the error: "Bad Mode Error". My key presses for [->][H.MS] are: [->] [f] [STO]. Am I misunderstanding what is intended here? Many thanks, and this new revision is looking great (especially the additions to the manual)!

Re: WP-34S Revision 1653 Feedback Message #2 Posted by Paul Dale on 2 Oct 2011, 9:57 p.m., in response to message #1 by svisvanatha Quote: 3. With respect to returning to DECM mode. Page 22 of the manual says that [->][H.MS] will return to DECM. However, when I try this from Integer mode, I get the error: "Bad Mode Error". My key presses for [->][H.MS] are: [->] [f] [STO]. Am I misunderstanding what is intended here? A documentation error I suspect. No [->] is required as far as I was aware. - Pauli

Re: WP-34S Revision 1653 Feedback Message #3 Posted by svisvanatha on 2 Oct 2011, 10:42 p.m., in response to message #2 by Paul Dale Thanks for the clarification.

Re: WP-34S Revision 1653 Feedback Message #4 Posted by svisvanatha on 2 Oct 2011, 11:31 p.m., in response to message #1 by svisvanatha 4. Running a simple SOLVE to compare against the 15C LE: LBL A x^2 5 - RTN On the 15C LE, this yields 2.2361 with intial guess of 0 and 10 in the Y and X registers, respectively. On the WP-34S, I initially get the "Solve Failed" message, but after clearing the message with EXIT, the correct result is displayed in X.

Re: WP-34S Revision 1653 Feedback Message #5 Posted by Paul Dale on 2 Oct 2011, 11:41 p.m., in response to message #4 by svisvanatha This stems from the error estimate in Z not being approximately zero. Try again in e.g. FIX 04 and it will work properly. Seems that check is a bit too aggressive. - Pauli

Re: WP-34S Revision 1653 Feedback Message #6 Posted by svisvanatha on 2 Oct 2011, 11:55 p.m., in response to message #5 by Paul Dale Ok. Thanks again!

Re: WP-34S Revision 1653 Feedback Message #7 Posted by Walter B on 3 Oct 2011, 2:54 a.m., in response to message #1 by svisvanatha Quote: I just flashed the Rev 1653 firmware. A few observations: 1. The previous discussion of FIX, SCI, ENG, ALL, setting DECM mode while in Integer mode has been realized. Except ALL, that had been in the manual for long already ;-) Quote: 3. With respect to returning to DECM mode. Page 22 of the manual says that [->][H.MS] will return to DECM. However, when I try this from Integer mode, I get the error: "Bad Mode Error". My key presses for [->][H.MS] are: [->] [f] [STO]. Am I misunderstanding what is intended here? H.MS as well as ->H.MS work in DECM exclusively as explained in the index. I will change the table you quoted. Thanks for pointing to it. Walter

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