DM15L degrees issue

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zooropa1844
Posts: 12
Joined: Mon Aug 28, 2017 12:17 am

DM15L degrees issue

Post by zooropa1844 »

Good evening, fellow collectors and users,
I recently bought a DM15L and being a complete newbie to the machine I am puzzled because when setting it to degrees DEG I get different answers for sine and cosine of 45 degrees.

Is there any known issue about this topic in any of the firmwares? What can I be doing wrong?

Cheers,

Javier
Zaphod
Posts: 24
Joined: Sat Mar 31, 2018 11:34 pm

Re: DM15L degrees issue

Post by Zaphod »

What answers do you get specifically ?
zooropa1844
Posts: 12
Joined: Mon Aug 28, 2017 12:17 am

Re: DM15L degrees issue

Post by zooropa1844 »

The same ones I get when I set the angle unit to GRAD. For the sin 0.850903525 and for the cos 0.525321989.
Thomas Okken
Posts: 788
Joined: Tue May 02, 2017 5:48 pm
Location: United States
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Re: DM15L degrees issue

Post by Thomas Okken »

It sounds like the calculator is in Complex mode. In that mode, the trigs work in radians, regardless of the DEG/RAD/GRAD setting.
rprosperi
Posts: 1031
Joined: Mon Apr 24, 2017 7:48 pm
Location: New York

Re: DM15L degrees issue

Post by rprosperi »

When you set DEG, there should be no annunciator in the bottom of the LCD (vs. "RAD" vs. "GRAD" when those modes are set); is this correct on your machine?

If so, please provide exact key sequences, such as:

[f][FIX][9]
[g][DEG]
[4][5] [SIN] => 0.707106781
[4][5] [COS] => 0.707106781

Also, what version is your ROM?

See button [E] on this page: https://www.swissmicros.com/instructions.php to see how to show the version.
--bob p

DM42: β00071 & 00282, DM41X: β00071 & 00656, DM10L: 071/100
zooropa1844
Posts: 12
Joined: Mon Aug 28, 2017 12:17 am

Re: DM15L degrees issue

Post by zooropa1844 »

Thank you, guys, after a power reset which finished with a Pr Error message is working right. It probably was in complex mode as Thomas guessed. I am kind of embarrassed but for sure it is not the calculator I am used to, and besides I allowed my toddler to mess with it this afternoon although only a few seconds.

Thank you all of you!!
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