P3 Refresh rate

[Gene-7]

  I recently put p3 S/N 712 on line and notice the spectrum display is
very jumpy as I tune up and down the band.

A) Is there an ideal refresh rate or a value one should start with?
B) Would this vary as band conditions change?
C) Is the rate tied in with averaging time?

I am used to seeing the spectrum display as on a ProII that I had, very
steady and not jumpy.  Any help would be appreciated.

Thanks,  Gene
W2BXR
K3, 1188
______________________________________________________________
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

[Eric Swartz - WA6HHQ]

Do you have averaging turned on?
73, Eric
===

On 11/10/2010 4:50 PM, Gene wrote:

>    I recently put p3 S/N 712 on line and notice the spectrum display is
> very jumpy as I tune up and down the band.
>
> A) Is there an ideal refresh rate or a value one should start with?
> B) Would this vary as band conditions change?
> C) Is the rate tied in with averaging time?
>
> I am used to seeing the spectrum display as on a ProII that I had, very
> steady and not jumpy.  Any help would be appreciated.
>
> Thanks,  Gene
> W2BXR
> K3, 1188

______________________________________________________________
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

[Eric Swartz - WA6HHQ]

Ah - I see you did have averaging turned on.

Yes, averaging over less samples will reduce this as it needs to
recalculate the display average when the frequency is changed. Turning
off averaging on the P3 will eliminate this and make it act like your
other display.

73, Eric


On 11/10/2010 4:50 PM, Gene wrote:

>    I recently put p3 S/N 712 on line and notice the spectrum display is
> very jumpy as I tune up and down the band.
>
> A) Is there an ideal refresh rate or a value one should start with?
> B) Would this vary as band conditions change?
> C) Is the rate tied in with averaging time?
>
> I am used to seeing the spectrum display as on a ProII that I had, very
> steady and not jumpy.  Any help would be appreciated.
>
> Thanks,  Gene
> W2BXR
> K3, 1188
>

______________________________________________________________
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