Refresh speed

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nickk622
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Refresh speed

Post by nickk622 » Thu Aug 26, 2010 9:46 am

Hi
Does the refresh speed of the Pico Scope GUI total depend on the processing speed of the host PC.
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ziko
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Re: Refresh speed

Post by ziko » Fri Aug 27, 2010 10:44 am

Hi yes it does depend on the CPU speed and your graphics card. The capture rate and the refresh rate are locked together.

Hope this helps.
Ziko

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nickk622
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Re: Refresh speed

Post by nickk622 » Fri Sep 03, 2010 10:42 am

Hi
Thanks for the imformation.
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johnw
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Re: Refresh speed

Post by johnw » Tue Sep 07, 2010 2:32 pm

Not specifically refresh but related I think ...

Could you do something about the response time when stopping
one capture - clearing the display - and restarting a new capture?

It usually takes 4 - 5 seconds for the new capture to start
and sometimes it just doesn't start and the button needs to be re-clicked. It is quite irritating.

I'm using the latest Picoscope download on an Intel Duo machine running at 2.5Ghz with 4Gb ram - I think that should be fast enough?

Also the on screen button could be a bit bigger and maybe better placed?

cheers

john
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ziko
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Re: Refresh speed

Post by ziko » Fri Sep 10, 2010 3:29 pm

Hi John, this is a different question.

What device are you using?
How many samples do you have across the screen?

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Ziko

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johnw
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Re: Refresh speed

Post by johnw » Mon Sep 20, 2010 2:06 pm

Hi Ziko

I use a 4224.
Just a simple square wave - maybe 30 cycles of about 600uS
pulse width variable by about 20%. About 3 sets captured. Nothing too large I don't think unless I'm doing something wrong or just badly.

Can you think of anything I may not be doing that could cause this? I notice no one else has mentioned this so it could well be me.

I usually set for falling trigger +/- 5V and various timescales
with repeat capture on.

Its no big deal - just a bit irritating.

john




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Autonerdz
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Re: Refresh speed

Post by Autonerdz » Mon Sep 20, 2010 3:18 pm

John,

Based on the fact that you are only getting three captures in the buffer, I would guess that your sample rate is very high. Check the properties tab to see. You can probably turn that down quite a bit. This would result in much faster updates and many more captures in the buffer.

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ziko
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Re: Refresh speed

Post by ziko » Wed Sep 22, 2010 1:20 pm

Hi John,

Like Tom says this could be your settings really if you can send your psdata file that would be great.

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Ziko

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Re: Refresh speed

Post by johnw » Thu Oct 07, 2010 3:30 pm

Sorry to take so long to respond.
I've turned down the rate as Tom suggested - this seems to have
done the trick. Thanks to all.

(new fangled digital gadgetry - snif snort mumble.... ) :wink:
john
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