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Trigger and USB Speed Issues with PicoScope 3204

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Trigger and USB Speed Issues with PicoScope 3204

Postby iomos » Wed Mar 01, 2006 10:41 am

Dear Sir / Madam,

I have been using the PicoScope 3204 for a few months but had this problems since the beginning:

a) Frequenctly, it false triggers (triggers at the right level but opposite slope). This is especially true with voltage ranges of +/- 1V or lower. The ratio of false to correct triggers is variable, quite often 50%, which makes the signal jump between the two slopes.

For the same signal, the problem goes away if the voltage range is +/- 2V or higher. Tried modifying all triggering and sampling parameters without any luck.

I have some sample PSD files, but I don't see an option to add an attachment on this form.

b) Although connected to a USB 2 port with a USB 2 compliant cable, the OS always indicates that the "device can perform faster if connected to a USB 2 port".

Could this be a faulty unit?
iomos
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Additional info:

Postby iomos » Wed Mar 01, 2006 4:25 pm

Forgot to mention that I'm using:

software release 5.13.7
driver version 2.5.0.0

Win XP
Celeron 2.8GHz
512Mb RAM

Any help would be greatly appreciated.

Thanks in advance.
iomos
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Postby Michael » Thu Mar 02, 2006 11:12 am

Hello,

It appears that your scope has developed a fault. You will be able to send the unit back to us for repair under warranty.

Please contact us at support@picotech.com

Best regards,
Michael
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