regarding DPO 4000 series

[Shake]

Hi iam using the DPO 4000 from tektronics ..with labview8.0
I am implmenting an application where i should be setting the falling level for the triggering ...
I want to know how can i set the oscilloscope using the VI's ,by which i can make it wait ,untill the trigger level ( i need falling edge trigger) is reached ...??

And when once the above is attained ,is there any specific VI by which i can capture the screen shot of DPO 4000 as an .bmp or .jpg and transfer it to my pc for saving it ??

Thanks,
Shake.

[Dennis_Knutson]

Have you looked at the example called tkdpo4k Edge Triggered Acquisition Waveform Example? It uses a configure Edge Trigger function that you can set the slope and voltage level of the trigger.

For a screen capture, you've presumably already have the information on the LabVIEW front panel so the simplest thing is to just print that out. I know the driver has no function for a screen capture nor do I know if the scope has a function like that. If you look through the scope's manual, see if such a function exists. If it does, then you can issue that command by doing a VISA Write and then use a VISA Read to get the data.

[Shake]

Thanks dennis..

Iam facing a new problem with the DPO4000 ...
Ihave comnnected the device thr usb .. and when i opened the "OPEN CHOICE DEsktop" for the DPO4000 .. and after using it ..i closed it ..
then when i try to run my labview 8.5 application that uses the DPO4000 Vi's iam getting an error code like -1089xxxxxx ...
I doubt some where the usb is held and its not getting released ..so that my Vi uses it ..but i didnt find any solution ..even i reconnected the usb connection back in, hoping that works , but unfortunatley it did not ..
can u suggest me with this ???

[Dennis_Knutson]

I'm not familiar with the Open Choice software but if you could provide the exact error code, that might help in determining what might be wrong.

[Shake]

thanks,
dennis

I have resolved the issue.

Thanks
Anwar

[Shake]

hi ...
 iam using the SAVE command to save the screenshot on to a flashdrive connected to the DPO..Now i want to get the .bmp file to my PC ..
Is there any specific VISA command that can do it for DPO4000 series...
I have referred the manual .. and i founf FILESYSTEM:READFILE "E:xxxxxx" which can read the data filess like .txt ..but how can i use this to read a .bmp file .....

Need suggestions
Thanks,
Anwar.