Digital meters 3

[[email protected]]

I appreciated many freinds attend discuss digital meters.
In fact, we are interesting in digital meters. First we know most of
pilot liking analog meter with many friends help. I forwarded your
replies to our engineer.
Our engineer told me we should do two kinds of meter, one is flight
meters, second is engine meters.
Filght meter include: ALT, VSI, ASI, Horizon Gyro. Except gyro, these
vales are showed in analog display digital.
Engine meter: CHT, EHT, RPM, TEMP. PRESSURE,HOURS, FUEL CONSUME, VOLT.
AMP. They are showed in numeric display digital.

Some friends suggested usd corlor LCD. Control prices below USD1000.00.
It is impossible in China. We contacted with LCD dealer in China. They
quoted us USD380.00/pc for color LCD. It is too high.
Please recommand us exact prices and which company is suit for our
products.

[Steve Foley]

I don't know where they get them, but you can purchase a color palm-pilot
for much less than that price.

A brand new notebook computer can be purchased for under $500 with a color
LCD screen, so you 'll need to look elsewhere for yours.

> wrote in message
oups.com...
> Please recommand us exact prices and which company is suit for our
> products.
>

[Stealth Pilot]

On 19 Apr 2006 05:07:36 -0700, wrote:

>Thank you for your message.
>Please explain what is "palm-pilot". I don't understand it.
>
palm pilot is one brand of PDA.
personal digital assistant.
it is a little battery powered hand held computing device used for
taking notes and maintaining an appointments diary. it has some
stripped down versions of software written for it such as a
spreadsheet.
there are also gps attachments and moving map sytems available for
some of them.
you probably havent seen them because some are made in taiwan.
Stealth Pilot

[Morgans]

"Steve Foley" > wrote

> A brand new notebook computer can be purchased for under $500 with a color
> LCD screen,

Yes? Where?

Also, LCD computer screens lack enough brightness to be seen in direct
sunlight, or anything near that bright, so are unsuitable for airplane use.
--
Jim in NC

[Steve Foley]

"Morgans" > wrote in message
...
>
> "Steve Foley" > wrote
>
> > A brand new notebook computer can be purchased for under $500 with a
color
> > LCD screen,
>
> Yes? Where?


www.dell.com

>
> Also, LCD computer screens lack enough brightness to be seen in direct
> sunlight, or anything near that bright, so are unsuitable for airplane
use.

OP did not ask about suitability of LCD display for aircraft use.

> --
> Jim in NC
>

[Bill Daniels]

"Steve Foley" > wrote in message
news:o%s1g.7111$_w6.6218@trndny09...
>
> "Morgans" > wrote in message
> ...
>>
>> "Steve Foley" > wrote
>>
>> > A brand new notebook computer can be purchased for under $500 with a
> color
>> > LCD screen,
>>
>> Yes? Where?
>
>
> www.dell.com
>
>>
>> Also, LCD computer screens lack enough brightness to be seen in direct
>> sunlight, or anything near that bright, so are unsuitable for airplane
> use.
>
> OP did not ask about suitability of LCD display for aircraft use.
>
>> --
>> Jim in NC
>>

No, but it's a good question. LCD's are hard to read in anything but the
ideal lighting. I use a PDA in my sailplane and I have to remove my
sunglasses to read it. A backlight bright enough to make it readable would
consume too much battery power.

A light, low power, screen readable in any light would be a big help. Maybe
the 'digital ink' screens will be an inprovement.

bildan

[Morgans]

"Steve Foley" > wrote >

> OP did not ask about suitability of LCD display for aircraft use.

Let me re-post some of a post, several back.

Our engineer told me we should do two kinds of meter, one is flight
meters, second is engine meters.
Filght meter include: ALT, VSI, ASI, Horizon Gyro. Except gyro, these
vales are showed in analog display digital.
Engine meter: CHT, EHT, RPM, TEMP. PRESSURE,HOURS, FUEL CONSUME, VOLT.
AMP. They are showed in numeric display digital.

Some friends suggested usd corlor LCD. Control prices below USD1000.00.
It is impossible in China. We contacted with LCD dealer in China. They
quoted us USD380.00/pc for color LCD. It is too high.
Please recommand us exact prices and which company is suit for our
products.

When he says: "Some friends suggested usd corlor LCD.", is he not talking
about a display for his flight systems? I think that is pretty clear.
--
Jim in NC

[Ian Mitchell]

> wrote in message
oups.com...
>I appreciated many freinds attend discuss digital meters.
> In fact, we are interesting in digital meters. First we know most of
> pilot liking analog meter with many friends help. I forwarded your
> replies to our engineer.
> Our engineer told me we should do two kinds of meter, one is flight
> meters, second is engine meters.
> Filght meter include: ALT, VSI, ASI, Horizon Gyro. Except gyro, these
> vales are showed in analog display digital.
> Engine meter: CHT, EHT, RPM, TEMP. PRESSURE,HOURS, FUEL CONSUME, VOLT.
> AMP. They are showed in numeric display digital.


Just an observation, as a pilot, I can tell you that I generally am not
interested in the absolute value of temp, pressure etc. What I need to know
is that the reading is in the green arc, ie it's within an acceptable range.
That to me represents the atvantage of traditional instruments over digital,
I can tell at a glance in a rapid instrument scan what the current situation
is. Another advantage is that I can do it with peripheral vision, and keep
my attention where it needs to be, ouside the cockpit.

[Wayne Paul]

"Bill Daniels" <bildan@comcast-dot-net> wrote in message
...

>
> ............ LCD's are hard to read in anything but the
> ideal lighting. I use a PDA in my sailplane and I have to remove my
> sunglasses to read it. A backlight bright enough to make it readable
would
> consume too much battery power.
>

That is why I am still using my old "black & white" Compaq 1550.
http://www.soaridaho.com/photogallery/Mackay/Lost_River_Mt_Range.jpg

Wayne
HP-14 N990 "6F"
http://www.soaridaho.com/Schreder/HP-14/N990/N990.html

[Bill Daniels]

"Wayne Paul" > wrote in message
...
>
> "Bill Daniels" <bildan@comcast-dot-net> wrote in message
> ...
>
>>
>> ............ LCD's are hard to read in anything but the
>> ideal lighting. I use a PDA in my sailplane and I have to remove my
>> sunglasses to read it. A backlight bright enough to make it readable
> would
>> consume too much battery power.
>>
>
> That is why I am still using my old "black & white" Compaq 1550.
> http://www.soaridaho.com/photogallery/Mackay/Lost_River_Mt_Range.jpg
>
> Wayne
> HP-14 N990 "6F"
> http://www.soaridaho.com/Schreder/HP-14/N990/N990.html
>
>

I had a Compaq 1550 but I dropped it (about a foot) and it no longer works.
I now use an Ipaq 3955 and the readability is just about as good (or bad) as
the old 1550 but the power comsumption is a lot higher for the color screen.
The totally reflective displays like "Electronic Ink" look good. We don't
really need fast response screens - just really good 'at-a-glance'
readability in direct sunlight.

[Highflyer]

"Ian Mitchell" > wrote in message
...
>
> > wrote in message
> oups.com...
>>I appreciated many freinds attend discuss digital meters.
>> In fact, we are interesting in digital meters. First we know most of
>> pilot liking analog meter with many friends help. I forwarded your
>> replies to our engineer.
>> Our engineer told me we should do two kinds of meter, one is flight
>> meters, second is engine meters.
>> Filght meter include: ALT, VSI, ASI, Horizon Gyro. Except gyro, these
>> vales are showed in analog display digital.
>> Engine meter: CHT, EHT, RPM, TEMP. PRESSURE,HOURS, FUEL CONSUME, VOLT.
>> AMP. They are showed in numeric display digital.
>
>
> Just an observation, as a pilot, I can tell you that I generally am not
> interested in the absolute value of temp, pressure etc. What I need to
> know is that the reading is in the green arc, ie it's within an acceptable
> range. That to me represents the atvantage of traditional instruments over
> digital, I can tell at a glance in a rapid instrument scan what the
> current situation is. Another advantage is that I can do it with
> peripheral vision, and keep my attention where it needs to be, ouside the
> cockpit.
>

The other thing I get with the old style analog meters is a quick estimate
of "rate of change." In a quick glance at the gage I can see WHERE the
needle is and if it is moving, how fast it is moving, and in what direction
its moving. That rate information makes a great difference in my response
to the meter reading!

With a digital readout the lower order digits are often flickering. I can't
tell how fast, or which way, or even if they are just jittering back and
forth a bit with out concentrating my attention on the readout for several
seconds. That is enough to totally blow my instrument scan and blow away my
internal integration my data streams from my instruments. I know from
experience that the worst thing I can do while flying on instruments is to
focus my attention on any one instrument. I have to constantly compare the
different gages that give me overlapping information for agreement. If any
two instruments that give me the same information from different
perspectives or techniques disagree, instantly my instruments are suspect
and I have to cross check until I indentify which one is lying to me and
then ignore it in my subsequent scan. If I fail to do that I will likely
kill myself when the vacuum pump fails or when the power goes bye bye. I
have had both vacuum and electrical systems fail more than once when flying
in solid IFR but I have NEVER had both systems fail at the same time! That
difference is why I am still here blathering on the internet! :-)

Highflyer
Highflight Aviation Services
Pinckneyville Airport ( PJY )

PS: The Pinckneyville r.a.h. flyin is coming up May 19, 20, 21. Be there
or be square! Email Mary at and let her know you are
coming so she can arrange for the groceries. Saturday night dinner is
steak, baby back ribs, or chicken breast. Let her know you preference. We
are leaving town right after the flyin and don't want a lot of leftovers to
deal with! :-)