[P3 SVGA] Has anyone seen garbage in the waterfall display?

[Hisashi T Fujinaka]

I just got my P3 SVGA card and it's just showing video noise in the
waterfall. I reloaded the firmware just to see if that would fix things,
and it did not.

I'm not sure if you can attach things to the posts on here, so a picture
of the display is at:
http://www.i8u.org/~htodd/badwaterfall.jpg

Any help would be appreciated.

--
Hisashi T Fujinaka - [hidden email]
BSEE(6/86) + BSChem(3/95) + BAEnglish(8/95) + MSCS(8/03) + $2.50 = latte
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[Mike K2MK]

Hi Hisashi,

From the photo is looks like you have your REF LVL set too high. The base signal (noise level) should be slightly below the dividing line between the upper display and the waterfall. Press the REF LVL button and turn the SELECT knob counterclockwise until the noise level just disappears.

The REF LVL will need to be changed from band to band but the P3 remembers the setting on each band. Of course the level also changes with atmospheric conditions, time of day, antenna direction, etc..

73,
Mike K2MK

Hisashi T Fujinaka wrote

I just got my P3 SVGA card and it's just showing video noise in the
waterfall. I reloaded the firmware just to see if that would fix things,
and it did not.

I'm not sure if you can attach things to the posts on here, so a picture
of the display is at:
http://www.i8u.org/~htodd/badwaterfall.jpg

Any help would be appreciated.

--
Hisashi T Fujinaka - [hidden email]
BSEE(6/86) + BSChem(3/95) + BAEnglish(8/95) + MSCS(8/03) + $2.50 = latte

Hello Hisashi,

It looks like you have a very high noise level, or, you never ran the
level calibration for the P3. Other than a few blips on the right half of
the screen, I don't see any signals, so I wouldn't expect to see much of
anything in the waterfall either.

That said, you can put the waterfall into a more usable range by simply
adjusting the "REF LVL" (on front panel of P3) downward until the bottom
edges of the noise spikes in your spectrum display baseline are just
hitting the bottom of the diving line between the spectrum display and the
waterfall display. That will produce the detail you're looking for in the
waterfal display.

73, Dale
WA8SRA

> I just got my P3 SVGA card and it's just showing video noise in the
> waterfall. I reloaded the firmware just to see if that would fix things,
> and it did not.
>
> I'm not sure if you can attach things to the posts on here, so a picture
> of the display is at:
> http://www.i8u.org/~htodd/badwaterfall.jpg
>
> Any help would be appreciated.
>
> --
> Hisashi T Fujinaka - [hidden email]
> BSEE(6/86) + BSChem(3/95) + BAEnglish(8/95) + MSCS(8/03) + $2.50 = latte
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

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[Hisashi T Fujinaka]

Aha. Things look quite different on both monitors, and as George Danner
pointed out, SVGA bias can be turned down to amke the display on the
SVGA look the same as on the internal monitor. Default is 9.9, I think,
and I turned it down to 1.2 at his suggestion.

Of course, my REF LVL needed adjusting as well.

Thanks for the help.

On Sat, 24 Aug 2013, Mike K2MK wrote:

> Hi Hisashi,
>
>> From the photo is looks like you have your REF LVL set too high. The base
> signal (noise level) should be slightly below the dividing line between the
> upper display and the waterfall. Press the REF LVL button and turn the
> SELECT knob counterclockwise until the noise level just disappears.
>
> The REF LVL will need to be changed from band to band but the P3 remembers
> the setting on each band. Of course the level also changes with atmospheric
> conditions, time of day, antenna direction, etc..
>
> 73,
> Mike K2MK
>
>
> Hisashi T Fujinaka wrote
>> I just got my P3 SVGA card and it's just showing video noise in the
>> waterfall. I reloaded the firmware just to see if that would fix things,
>> and it did not.
>>
>> I'm not sure if you can attach things to the posts on here, so a picture
>> of the display is at:
>> http://www.i8u.org/~htodd/badwaterfall.jpg
>>
>> Any help would be appreciated.
>>
>> --
>> Hisashi T Fujinaka -
>
>> htodd@
>
>> BSEE(6/86) + BSChem(3/95) + BAEnglish(8/95) + MSCS(8/03) + $2.50 = latte
>
>
>
>
>
> --
> View this message in context: http://elecraft.365791.n2.nabble.com/P3-SVGA-Has-anyone-seen-garbage-in-the-waterfall-display-tp7578217p7578228.html
> Sent from the Elecraft mailing list archive at Nabble.com.
> ______________________________________________________________
> Elecraft mailing list
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--
Hisashi T Fujinaka - [hidden email]
BSEE(6/86) + BSChem(3/95) + BAEnglish(8/95) + MSCS(8/03) + $2.50 = latte
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[Bill W]

Hello Hisashi,

From the picture you sent, I believe you also need to adjust the SVGA "bias" way back. The adjustment is accessed from the SVGA menu. I had the same waterfall screen appearance until I dropped the bias back to around "2." 

73,
Bill - W0BBI
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