K3 Display Question

[Don Rasmussen]

Is it possible to view the display in LCD fashion,
having a lesser backlight as opposed to the bright
yellow (OMNIGLOW) type setup? The ARRL Dayton photo
seems to show it as a traditional LCD display.

Also noticed that there are separate SWR and Relative
power graphs on the display for simultaneous viewing.

As the Brits say "Brilliant!" ;-)
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[Greg - AB7R]

Don,

There are three menu setting that affect the LCD display.

1. LCD brightness (backlight brightness)
2. LCD Adj - Used to optimize the display when viewed at different angles
3. LED brightness - used to adjust the LED brightness compared to the LCD
background brightness

Hope this helps.

73 and thanks.
Greg
AB7R



-----Original Message-----
From: [hidden email]
[mailto:[hidden email]]On Behalf Of Don Rasmussen
Sent: Sunday, May 27, 2007 8:26 PM
To: Elecraft List
Subject: [Elecraft] K3 Display Question


Is it possible to view the display in LCD fashion,
having a lesser backlight as opposed to the bright
yellow (OMNIGLOW) type setup? The ARRL Dayton photo
seems to show it as a traditional LCD display.

Also noticed that there are separate SWR and Relative
power graphs on the display for simultaneous viewing.

As the Brits say "Brilliant!" ;-)
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[Don Wilhelm-3]

Don,

I am not certain what you mean by 'view the display in LCD fashion', BUT:

The LCD Backlighting intensity is adjustable - also the LED brightness
is also adjustable.  Wayne demonstrated that several times at Dayton.

73,
Don W3FPR

Don Rasmussen wrote:
> Is it possible to view the display in LCD fashion,
> having a lesser backlight as opposed to the bright
> yellow (OMNIGLOW) type setup? The ARRL Dayton photo
> seems to show it as a traditional LCD display.
>
> Also noticed that there are separate SWR and Relative
> power graphs on the display for simultaneous viewing.
>
> As the Brits say "Brilliant!" ;-)
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[Alan Biocca]

I believe that Wayne indicated that the LCD is transflective, so it
will be viewable with or without backlight.

-- Alan, wb6zqz


At 08:41 PM 5/27/2007, Don Wilhelm wrote:

>Don,
>
>I am not certain what you mean by 'view the display in LCD fashion', BUT:
>
>The LCD Backlighting intensity is adjustable - also the LED
>brightness is also adjustable.  Wayne demonstrated that several
>times at Dayton.
>
>73,
>Don W3FPR
>
>Don Rasmussen wrote:
>>Is it possible to view the display in LCD fashion,
>>having a lesser backlight as opposed to the bright
>>yellow (OMNIGLOW) type setup? The ARRL Dayton photo
>>seems to show it as a traditional LCD display.
>>Also noticed that there are separate SWR and Relative
>>power graphs on the display for simultaneous viewing.
>>As the Brits say "Brilliant!" ;-)

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[Koaps]

Hello All,

I've finished the first part of the build and I am at
the resistance testing part.

I wanted to check the values I'm getting.

For U1

Pin Value(Ohms)
1 3.175K
2 Open
3 5.78K
4 5.79K
5 40K+
6 Open
7 Open
8 0.2(short to ground)
9 Open
10 Open
11 Open
12 Open
13 20.02K
14 20K
15 Open
16 19.98K
17 2.669M
18 16.34M
19 0.2(short to ground)
20 3.165K
21 Open
22 Open
23 Open
24 Open
25 Open
26 Open
27 Open
28 Open

The second test against D2/3 doesn't seem to make much
sense to me.

S1 doesn't seem to effect the test, but S2 does. Isn't
S1 for the LED?

The values I do see seem to be in the Mega Ohm range,
not Kilo.

Can someone verify the results I'm getting, I really
don't want to fry any of the parts.

Thanks,
-Chris



       
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[Alan Biocca]

Great, and good photo.

The thing is, on a radio of this type, the LED LCD backlight current
draw is not that significant. (DSP's take some current, this is not a
K2 in current draw). However, in sunlight (or flash camera) the
transflective display remains viewable.

-- Alan, WB6ZQZ
-- www.AntennaLaunchers.com


At 09:04 PM 5/27/2007, Don Rasmussen wrote:

>Hi Alan,
>
>You hit the nail on the head, I think with a small
>amount of room light the display should look like the
>attached photo. beauty.
>
>Thanks,
>Don
>
>--- Alan Biocca <[hidden email]> wrote:
>
> > I believe that Wayne indicated that the LCD is
> > transflective, so it
> > will be viewable with or without backlight.
> >
> > -- Alan, wb6zqz
> >
> >
> > At 08:41 PM 5/27/2007, Don Wilhelm wrote:
> > >Don,
> > >
> > >I am not certain what you mean by 'view the display
> > in LCD fashion', BUT:
> > >
> > >The LCD Backlighting intensity is adjustable - also
> > the LED
> > >brightness is also adjustable.  Wayne demonstrated
> > that several
> > >times at Dayton.
> > >
> > >73,
> > >Don W3FPR
> > >
> > >Don Rasmussen wrote:
> > >>Is it possible to view the display in LCD fashion,
> > >>having a lesser backlight as opposed to the bright
> > >>yellow (OMNIGLOW) type setup? The ARRL Dayton
> > photo
> > >>seems to show it as a traditional LCD display.
> > >>Also noticed that there are separate SWR and
> > Relative
> > >>power graphs on the display for simultaneous
> > viewing.
> > >>As the Brits say "Brilliant!" ;-)
> >
> >
>

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[Don Wilhelm-3]

Chris,

Since all your resistance readings correspond with the expected values
in the chart, I can only assume you are not familiar with the '>' and
'<' symbols - '>' means 'greater than', and '<' means 'less than'.  A
resistance of <5 ohms can be a short, and a resistance of >10k can be as
high as an open circuit.

73,
Don W3FPR

Koaps wrote:
> Hello All,
>
> I've finished the first part of the build and I am at
> the resistance testing part.
>
> I wanted to check the values I'm getting.
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[Koaps]

Hi Don,

I am familiar with those symbols, I just wasn't sure
if something like >10K should be in the megaohm range.

Since some of the reading where in the 20K range I
thought something might have been off.

Just being careful since I really don't want anything
to happen to my KX1.

I guess things are ok then.

Thanks,
-chris





--- Don Wilhelm <[hidden email]> wrote:

> Chris,
>
> Since all your resistance readings correspond with
> the expected values
> in the chart, I can only assume you are not familiar
> with the '>' and
> '<' symbols - '>' means 'greater than', and '<'
> means 'less than'.  A
> resistance of <5 ohms can be a short, and a
> resistance of >10k can be as
> high as an open circuit.
>
> 73,
> Don W3FPR
>
> Koaps wrote:
> > Hello All,
> >
> > I've finished the first part of the build and I am
> at
> > the resistance testing part.
> >
> > I wanted to check the values I'm getting.
>

       
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[Ron D'Eau Claire-2]

That comes up a lot Chris. DMMs vary widely in what they do when "out of
range" or even when the reading is within range. Also, the readings often
vary widely when the probes are reversed. The manuals try to compensate for
that by stating values that any decent DMM will indicate no matter how it's
used.

The downside is a concern like yours in which the DMM agrees with the
reading but by such a wide margin it "raises eyebrows", Hi!

Ron AC7AC

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Koaps
Sent: Monday, May 28, 2007 10:26 AM
To: [hidden email]
Cc: [hidden email]
Subject: Re: [Elecraft] KX1 resistance tests help


Hi Don,

I am familiar with those symbols, I just wasn't sure
if something like >10K should be in the megaohm range.

Since some of the reading where in the 20K range I
thought something might have been off.

Just being careful since I really don't want anything
to happen to my KX1.

I guess things are ok then.

Thanks,
-chris

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[wayne burdick]

> I believe that Wayne indicated that the LCD is transflective, so it
> will be viewable with or without backlight.

Yes. In daylight/outdoor conditions you might want to use it with the
backlight off, and it will retain its high contrast. If you select
"DAY" mode for the LCD backlight, it automatically sets the LEDs to
their brightest setting.

73,
Wayne
N6KR



---

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