Test and Measurement Forum

PS2205 trigger

Forum for discussing PicoScope version 6 (non-automotive version)

PS2205 trigger

Postby tulagm » Thu Oct 29, 2009 7:24 am

I had problem triggering PS2205 from my own program. So I was playing around with both PicoScope5 and 6 to find the similarities between PicoScope functions and programming API. Then I realized something:

1. It's almost impossible to get stable trigger if trigger level is set at about 10% (or less) of selected vertical scale above lower signal peak value (if trigger on rising edge) or below upper one (if trigger on falling edge). I got same results with both PS5, 6 and my program. Is that hardware constraint or software (API) error?

2. If channel A is switched off and trigger is set on channel B, then PS6 always get steadily triggered at some level, regardless of where the trigger reference point is set, event if trigger level is set above max. signal value or below min. signal value. This doesn't happen with PS5 and my program. So I think this is a bug in PS6.

Could you please check and give me some clarification.

My testing condition:
- PS2205 (Hardware Version: 16) on Windows XP SP3
- PicoScope 6 version 6.2.14.0 (Driver Version: 2, 0, 8, 3)
- PicoScope 5 version 5.20.8 (Driver Version: 2, 0, 8, 2)
- My program developed in Delphi 5 with DLL from PS6 (Driver Version: 2, 0, 8, 3)
tulagm
Newbie
 
Posts: 0
Joined: Tue Oct 20, 2009 2:29 pm

Re: PS2205 trigger

Postby gruntman » Wed Nov 04, 2009 8:55 pm

Tulagm,

Can you save some .psdata's with PicoScope 6 with the trigger settings like you are having issues with? This way we can see exactly how the triggers are set to determine the issue software/hardware wise. Thanks!

Regards,

Richard Boyd
Crag Technologies, Inc
http://www.pc-oscilloscopes.com
gruntman
Guru
Guru
 
Posts: 109
Joined: Thu Sep 28, 2006 3:50 pm

Re: PS2205 trigger

Postby tulagm » Thu Nov 05, 2009 4:54 am

Thanks for your response,

I have tried to restore the conditions I had issues with, and here are results:

1st issue seems to be "self-solving". I really don't understand why but now I can set trigger level in much wider range then last attempt. I would collect psdata if I encounter it again.

2nd problem still happens and I attached here some psdata for your analysis

Hope this can help,
tulagm
tulagm
Newbie
 
Posts: 0
Joined: Tue Oct 20, 2009 2:29 pm

Re: PS2205 trigger

Postby tulagm » Thu Nov 05, 2009 4:57 am

Sorry but I could not upload attachments to the forum. How can I send you psdata?

Regards,
tulagm
tulagm
Newbie
 
Posts: 0
Joined: Tue Oct 20, 2009 2:29 pm

Re: PS2205 trigger

Postby gruntman » Thu Nov 05, 2009 5:15 am

Tulagm,

Zip the .psdata files and then try reuploading them.

Regards,

Richard Boyd
Crag Technologies, Inc
http://www.pc-oscilloscopes.com
gruntman
Guru
Guru
 
Posts: 109
Joined: Thu Sep 28, 2006 3:50 pm

Re: PS2205 trigger

Postby tulagm » Thu Nov 05, 2009 7:04 am

Thanks for your suggestion. Here is zipped psdata.

Regards,
Attachments
Waveforms.zip
(246.95 KiB) Downloaded 109 times
tulagm
Newbie
 
Posts: 0
Joined: Tue Oct 20, 2009 2:29 pm


Return to PicoScope 6 for Windows

Who is online

Users browsing this forum: No registered users and 0 guests