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P3: Vertical Lines for display question

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NK7Z

P3: Vertical Lines for display question

Hello,

I would like to get a grid reference overlaid on the screen of my P3,
and can't locate a setting for this.

All I find for controlling this, are two choices, horizontal grid lines,
and no vertical lines, of billions of dots, defining a sort of grid
pattern for both the horizontal and vertical. I would like a simple
grid to be displayed.

Is there an option I am missing which allows the horizontal lines, and a
set of vertical lines, (not dots), perhaps dropping from the markers at
the top and bottom of the display?
--
73s and thanks,
Dave
NK7Z
http://www.nk7z.net
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Don Wilhelm

Re: P3: Vertical Lines for display question

Dave,

There are 2 thin Markers that can be moved about on the spectrum display
part of the screen - Marker A and Marker B. These are different from
the VFO A and VFO B display bands.
I think the vertical lines you are asking for can mask those markers.

73,
Don W3FPR

On 9/16/2017 10:21 AM, Dave Cole wrote:

> Hello,
>
> I would like to get a grid reference overlaid on the screen of my P3,
> and can't locate a setting for this.
>
> All I find for controlling this, are two choices, horizontal grid lines,
> and no vertical lines, of billions of dots, defining a sort of grid
> pattern for both the horizontal and vertical. I would like a simple
> grid to be displayed.
>
> Is there an option I am missing which allows the horizontal lines, and a
> set of vertical lines, (not dots), perhaps dropping from the markers at
> the top and bottom of the display?

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NK7Z

Re: P3: Vertical Lines for display question

Hello Don,
Thank you for the answer. I am looking to impress a grid structure on
the P3, as opposed to some lines I need to move. I want to be able to
document exactly how wide something is signal wise, by taking a snap of
the signal, then looking at it with my computer. I had not thought
about the markers, thanks for that. That will do if I can't locate a
way to actually impress a grid on the output of the P3.

73s and thanks,
Dave
NK7Z
http://www.nk7z.net

On 09/16/2017 09:31 AM, Don Wilhelm wrote:

> Dave,
>
> There are 2 thin Markers that can be moved about on the spectrum display
> part of the screen - Marker A and Marker B. These are different from
> the VFO A and VFO B display bands.
> I think the vertical lines you are asking for can mask those markers.
>
> 73,
> Don W3FPR
>
> On 9/16/2017 10:21 AM, Dave Cole wrote:
>> Hello,
>>
>> I would like to get a grid reference overlaid on the screen of my P3,
>> and can't locate a setting for this.
>>
>> All I find for controlling this, are two choices, horizontal grid
>> lines, and no vertical lines, of billions of dots, defining a sort of
>> grid pattern for both the horizontal and vertical. I would like a
>> simple grid to be displayed.
>>
>> Is there an option I am missing which allows the horizontal lines, and
>> a set of vertical lines, (not dots), perhaps dropping from the markers
>> at the top and bottom of the display?

Jim Brown-10

Re: P3: Vertical Lines for display question

Hi Dave,

Take a look at the screen grabs in
http://k9yc.com/P3_Spectrum_Measurements.pdf

These were done two ways. The ones without the SVGA were saved from the
P3 Utility. Those with the SVGA were saved to a USB thumb drive via the
SVGA menu. These data were all obtained by accumulating peaks on the
signal. Before saving the screens, I used the cursor to points along the
curve on both sides to document the frequencies and levels and wrote
them down. Then I saved the screens.

Note also that there are small calibrations along the top of the screen,
and that these are sub-divisions of the scan width. Using graphics
editing software, it's possible (not easy) to turn the screen grab
negative so that the background is white and the traces are some color
dark enough to print. When using these calibrations, it helps to set the
scan width to a the smallest value that contains all the data and that
makes these calibrations a convenient scale. When printing the graphics,
it helps to scale the image so that the spacing between calibrations is
the same or close to whatever ruler is available. Also, decimal rulers
help.

The edited graphics can be printed, vertical lines drawn, and points
picked off with an architect's or engineer's scale. I've done this with
some P3 data, and also ARRL Lab data for which data files were not
available. Older engineers (those of us trained 50 or more years ago)
learned these techniques (and a lot more) in our freshman year. Data
for Fig 2 in k9yc.com/TXNoise.pdf was obtained by applying these methods
to the plots on Pages 1 and 2.

If this sounds like a lot of work, you're right. Which gives you an idea
how much time I put into producing those reports. :)

73, Jim K9YC

On 9/16/2017 10:43 AM, Dave Cole wrote:
> I am looking to impress a grid structure on the P3, as opposed to some
> lines I need to move. I want to be able to document exactly how wide
> something is signal wise, by taking a snap of the signal, then looking
> at it with my computer.

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NK7Z

Re: P3: Vertical Lines for display question

As always Jim, you have something that helps! THANKS... Let me absorb
your presentation on using the P3. You are using it for almost exactly
what I am planning...

I have been hoping to avoid adding vertical grid lines, but maybe it is
time to start that using GIMP... If only the P3 did that...

Thanks again Jim!

73s and thanks,
Dave
NK7Z
http://www.nk7z.net

On 09/16/2017 11:40 AM, Jim Brown wrote:

> Hi Dave,
>
> Take a look at the screen grabs in
> http://k9yc.com/P3_Spectrum_Measurements.pdf
>
> These were done two ways. The ones without the SVGA were saved from the
> P3 Utility. Those with the SVGA were saved to a USB thumb drive via the
> SVGA menu. These data were all obtained by accumulating peaks on the
> signal. Before saving the screens, I used the cursor to points along the
> curve on both sides to document the frequencies and levels and wrote
> them down. Then I saved the screens.
>
> Note also that there are small calibrations along the top of the screen,
> and that these are sub-divisions of the scan width. Using graphics
> editing software, it's possible (not easy) to turn the screen grab
> negative so that the background is white and the traces are some color
> dark enough to print. When using these calibrations, it helps to set the
> scan width to a the smallest value that contains all the data and that
> makes these calibrations a convenient scale. When printing the graphics,
> it helps to scale the image so that the spacing between calibrations is
> the same or close to whatever ruler is available. Also, decimal rulers
> help.
>
> The edited graphics can be printed, vertical lines drawn, and points
> picked off with an architect's or engineer's scale. I've done this with
> some P3 data, and also ARRL Lab data for which data files were not
> available. Older engineers (those of us trained 50 or more years ago)
> learned these techniques (and a lot more) in our freshman year. Data
> for Fig 2 in k9yc.com/TXNoise.pdf was obtained by applying these methods
> to the plots on Pages 1 and 2.
>
> If this sounds like a lot of work, you're right. Which gives you an idea
> how much time I put into producing those reports. :)
>
> 73, Jim K9YC
>
> On 9/16/2017 10:43 AM, Dave Cole wrote:
>> I am looking to impress a grid structure on the P3, as opposed to some
>> lines I need to move. I want to be able to document exactly how wide
>> something is signal wise, by taking a snap of the signal, then looking
>> at it with my computer.
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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>
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alorona

Re: P3: Vertical Lines for display question

You guys may already know this, but there exists software that can read a graph and generate data from it. For instance, it can turn a plot on a device's PDF datasheet into real data. Just Google it. The one I've seen electronics people using is called "engauge".

Al W6LX
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