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DM41L at work
01-04-2016, 01:02 PM (This post was last modified: 01-04-2016 01:07 PM by Geoff Quickfall.)
Post: #1
DM41L at work
Love this calc, fits in my shirt pocket, almost as powerful as a basic 41CX. So after filling it with work related programs I took it to work tonight. More on that later.

plusses:

1 size.
2 speed, it is faster then the basic CX.
3 clear screen viewable at many angles.
4 key feel is better then the micros, remember to 'roll' your finger forward.
5 accepts and can create synthetic commands.
6 back-up-able using PuTTY.
7 will have program print once encoder/decoder up and running.
8 loud alarm function, nice!

Not so plus:

1 CAT 4,5 and 6 scroll way too fast, will be fixed in updated firmware.
2 PSE way too fast in 48mHz setting, will be fixed in updated firmware.
3 124 registers on extended instead of full 600, may be fixed in future firmware.
4 not ROM module capable. Hopefully this is not a hardware problem and capability will be added, even if limited to a few.
5 not IR print capable for output.
6 no overlay capability, may be addressed soon.
7 if your calc rattles, it is probably the peizo which has come loose inside the calc, easy fix and will be modified in further production runs.

Since there is no overlay capability and it can hold so many routines I need a foldout description of my programs and some cards picturing key assignments including routines that access the A thru E keys.

So picture one is of a foldout which explains the programs and fits in the carry case:

[Image: 3d97f47c5927a9446484b2bf3d8eaac3_zpsskrtvc1d.jpg]

The key assignment locations left side half of the calculator. Note that I have colour coded the routine which calls A thru E:

[Image: 4ea1a71c30eec72361be98da5abe0611_zpsoykvkvrh.jpg]

The key assignment locations right side half of calculator, again here two programs access the A thru E keys when resident in the program:

[Image: cb51597a81d051b9322a73aa2440aedd_zpsdkydyyl2.jpg]

Quick reference card for programs side one:

[Image: 5f40d406d3115544064e0028e795d27d_zpsfm9ao0wz.jpg]

Quick reference card for programs side two:

[Image: 6316e1db3f23752eefbb1f7783bd2931_zpsw0opd0yw.jpg]

Shot of the DM41L on the flight deck running the flight time program and showing the countdown time left "TO GO":

[Image: c79873d5534400e028f494722bc85169_zpssoe1ea5s.jpg]

A close up:

[Image: 26d2d2f81ab56e4365ca545583ba2021_zps7dqdcl9g.jpg]

Lots of fun to program and one gets used to the key locations pretty quickly.

Happy new year all!

Geoff
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01-04-2016, 05:47 PM
Post: #2
RE: DM41L at work
Geoff,

You are insane.

In a good way.
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01-04-2016, 06:51 PM
Post: #3
RE: DM41L at work
(01-04-2016 05:47 PM)Geir Isene Wrote:  ... insane.

In a good way.

Doesn't work due to internal contradiction. Please choose another word.

@Geoff: A fellow passenger aircraft pilot stated your tool being impractical but nicely presented. Smile

d:-)
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01-04-2016, 07:44 PM
Post: #4
RE: DM41L at work
(01-04-2016 06:51 PM)walter b Wrote:  Doesn't work due to internal contradiction. Please choose another word.

...no, no, no. For me this makes perfectly sense. ?
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01-04-2016, 07:53 PM
Post: #5
RE: DM41L at work
(01-04-2016 01:02 PM)Geoff Quickfall Wrote:  and one gets used to the key locations pretty quickly.

Not true.

Greetings,
    Massimo

-+×÷ ↔ left is right and right is wrong
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01-04-2016, 08:59 PM
Post: #6
RE: DM41L at work
(01-04-2016 07:44 PM)Alex S Wrote:  ...no, no, no. For me this makes perfectly sense. ?

Hmmh, insane?

d:-?
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01-04-2016, 09:14 PM
Post: #7
RE: DM41L at work
(01-04-2016 06:51 PM)walter b Wrote:  
(01-04-2016 05:47 PM)Geir Isene Wrote:  ... insane.

In a good way.

Doesn't work due to internal contradiction. Please choose another word.

What's wrong with occasional rhetoric figures?

http://www.americanrhetoric.com/figures/paradox.htm
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01-04-2016, 09:38 PM
Post: #8
RE: DM41L at work
FAA approved? Smile

What wonderfull photos, Geoff.

Brings me back old memories and a itch to buy one ( calculator, not the aircraft ) Smile
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01-04-2016, 10:11 PM
Post: #9
RE: DM41L at work
Well, you can be crazy in a good way but not insane. Insane stems from insanus (= 'ill' in Latin), and being ill in a good way is impossible IMHO.

d:-I
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01-04-2016, 11:14 PM
Post: #10
RE: DM41L at work
(01-04-2016 10:11 PM)walter b Wrote:  Well, you can be crazy in a good way but not insane. Insane stems from insanus (= 'ill' in Latin), and being ill in a good way is impossible IMHO.

d:-I

Yes, I recognize the root in the Portuguese word "são" ( = healthy ), the tilde being originally a little "n" put atop the vowel to indicate nasalization. "Insano", on the other hand, means mad, crazy, an exact equivalent to the English word insane, according to Merriam-Webster:

http://www.merriam-webster.com/dictionary/insane
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01-05-2016, 12:21 AM (This post was last modified: 01-05-2016 12:25 AM by jebem.)
Post: #11
RE: DM41L at work
(01-04-2016 10:11 PM)walter b Wrote:  ... and being ill in a good way is impossible IMHO.

d:-I

Well... it depends... it is well known that some people in my country can be ill in a very good way by exaggerating their illness status in order to enjoy a cozy home and get work-free monthly salaries from our social welfare fragile system.

Jose Mesquita
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01-05-2016, 01:25 AM
Post: #12
RE: DM41L at work
All done at 33000 Ft
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01-05-2016, 06:55 AM
Post: #13
RE: DM41L at work
(01-05-2016 12:21 AM)jebem Wrote:  
(01-04-2016 10:11 PM)walter b Wrote:  ... and being ill in a good way is impossible IMHO.

d:-I

Well... it depends... it is well known that some people in my country can be ill in a very good way by exaggerating their illness status in order to enjoy a cozy home and get work-free monthly salaries from our social welfare fragile system.

Well that's fraud. On the other hand the sentence "insane in the good way" is a perfectly put together contradiction that showcases the flexibility of language, *never* to be taken literary - for when you do you remove the spark from the mix. Got it?
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01-05-2016, 11:09 AM
Post: #14
RE: DM41L at work
(01-05-2016 06:55 AM)Ángel Martin Wrote:  
(01-05-2016 12:21 AM)jebem Wrote:  Well... it depends... it is well known that some people in my country can be ill in a very good way by exaggerating their illness status in order to enjoy a cozy home and get work-free monthly salaries from our social welfare fragile system.

Well that's fraud. On the other hand the sentence "insane in the good way" is a perfectly put together contradiction that showcases the flexibility of language, *never* to be taken literary - for when you do you remove the spark from the mix. Got it?

Oh, I got it perfectly well since Geir's initial post
Your answer should be targeted to Walter who seems to be a bright and logical mind.
I was just pushing a little on Walter. I believe he is not taking it as an offense.

Un Saludo desde Portugal a nuestros hermanos Españoles.

Jose Mesquita
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01-05-2016, 11:57 AM
Post: #15
RE: DM41L at work
(01-05-2016 11:09 AM)jebem Wrote:  I was just pushing a little on Walter. I believe he is not taking it as an offense.

Don't be afraid, Jose - I seldom take something as an offense unless it's carried by lack of logic and/or justice. Examples can be found. Wink

Cumprimentos

d:-)
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01-05-2016, 12:54 PM
Post: #16
RE: DM41L at work
(01-04-2016 01:02 PM)Geoff Quickfall Wrote:  6 no overlay capability, may be addressed soon.

Wonderful presentation !

I am curious if the Voyager series overlays being sold on TAS are compatible with the DM-xxL series calculators ? (On TAS, search for hp 15c overlay, and I have no affiliation with that seller)

Of course, there are no retention mechanisms built into Voyager series for overlays. Not sure about the DM series.

Your key reference cards work well at your "desk", but consist of many unsecured parts to have floating around in the cockpit, IMO.

-- Sanjeev Visvanatha
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01-05-2016, 01:23 PM
Post: #17
RE: DM41L at work
(01-05-2016 12:54 PM)Sanjeev Visvanatha Wrote:  ... there are no retention mechanisms built into Voyager series for overlays. Not sure about the DM series.

Not really seen such mechanisms in my DM16L but there are minor gaps between keyplate and chassis which might become useful.

d:-?
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01-05-2016, 05:31 PM
Post: #18
RE: DM41L at work
The picture above of the DM41L set in the aeroplane cockpit is very evocative, in fact it is stunning. The iconic and capable professional tool looking so natural in its working context but just look at the maker's name on it. It hits you right between the eyes.

That scenario is what HP threw away. 20 years of missing the mark have taken their toll.
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01-06-2016, 06:44 AM
Post: #19
RE: DM41L at work
(01-05-2016 12:54 PM)Sanjeev Visvanatha Wrote:  Your key reference cards work well at your "desk", but consist of many unsecured parts to have floating around in the cockpit, IMO.
Is a GPS window mount acceptable in an aircraft?
You could mount the calculator, and a sheet of instructions (on stiffening cardboard) could poke out the back. Or add custom labels, as per the 34S.

Not good for aerobatics, but probably enough to withstand being tossed around a bit by inclement weather.
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01-06-2016, 06:54 AM
Post: #20
RE: DM41L at work
I don't remember the specific values, but commercial GPS units have an altitude and a velocity limit beyond which they won't produce a position. I don't know if commercial airliners reach the altitude limit or not, I doubt they reach the velocity limit.


- Pauli
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