Can't see pre-trigger part of trace - ADC212 and Vista

 
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pwbromley
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Joined: 07 May 2008
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Location: Leicester
PostPosted: Wed May 07, 2008 1:44 pm    Post subject: Can't see pre-trigger part of trace - ADC212 and Vista Reply with quote
I have recently upgraded my PC to Vista, and have downloaded the latest Pico software (5.20.0).
The display does not register with the trigger position properly. It seems to be shifted to the right.
For instance, I have a timebase of 1ms/div and a trigger delay of -10%. What happens is that the trace starts at -142.8 us and the waveform which caused the trigger starts at 859.3 us. This adds up to 1 ms (within a bit of tolerance). The trace should start at -1 ms and the waveform should start at 0 ms. So I get a bit of blank trace at the left of the screen, and some of the post trigger on the right is lost.
I have attached a screen shot which shows the problem.

The scope is an ADC212-50 with a parallel to USB interface. It has been running OK for years on W 98 and XP.

Is this a PIco Vista problem?

Regards,

Phil

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picojohn
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Joined: 11 Jun 2007
Posts: 365

PostPosted: Thu May 08, 2008 3:07 pm    Post subject: Reply with quote
Hello Phil,

I am sorry that you are experiencing this problem. Please uninstall version R5.20.0 and install R5.20.1 which should be available for download by the end of this week.

Regards
John
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pwbromley
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Joined: 07 May 2008
Posts: 2
Location: Leicester
PostPosted: Mon May 12, 2008 8:14 am    Post subject: Reply with quote
John,

Thanks for your response. Unfortunately R5.20.1 doesn't cure the problem.

I have reverted to R5.18.0 which doesn't seem to have the same trouble with delayed trigger display.

Before I uninstalled it I had a little play with settings. It looks as if the display offset is proportional to the trigger delay, and is also wrong for positive delay values.

Regards,

Phil
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picojohn
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PostPosted: Mon May 12, 2008 1:50 pm    Post subject: Reply with quote
Thank you for that Phil,

I will investigate this and report to the software developers as necessary.

Regards
John
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