wireless tektronix control

[_zeyol_]

hi everyone !

I'm designing a labview application that communicates with a tektronix DPO7054 scope through GPIB. but for the need of the bench, the scope has to be powered by an isolation transformer, so that its reference voltage is not the same as the rest of the bench. but because GPIB transmit the ground between the scope and the computer, it ruins everything !

So I'm wondering how can I comunnicate with my oscilloscope wireless :

• I know I can use the GPIB/ENET/100 device and connect it to a wireless bridge to connect the scope to a wifi LAN, but it requires to buy 2 more devices, and the scope will be 1m close to the computer... so it gives a lot of feature that i don't need.
• if I add to the scope and to the computer a wifi adapter, will I be able to connect them together through an ad-hoc network for example ? and will LabVIEW still recognise the scope as a VISA device ?
• same question with a bluetooth adapter.

If someone did this before or if anyone has got any idea, thanks for helping 😃

(edit : sry if I posted in the wrong section)

[ejkaiser]

Can't you supply the PC from the same isolation transformer?

Cheers

Edgar

[_zeyol_]

thanks for answering

yes I could but it invloves some security issues, because the ground of the scope could be set to a 600V potential, it will be put in a safety cage, but I can't put also the comuter in it, and it could be dangerous if someone touches a ground (usb, chassis...)

[ejkaiser]

Actually a DPO7000 scope is a Windows computer. So it should be possible to connect to it via Remote Desktop or another remote access protocol. Then you would only need a cheap WLAN adapter. I am not completely sure if the Tekscope application allows remote access.

Maybe I find the time to try that over the weekend. I have DPO7254 and it is an interesting topic.

Cheers

Edgar

[_zeyol_]

I'll supply the computer from the isolation transformer, but my boss really don't like this, it's a short time solution.

and using Remote Desktop is not a solution because I need to communicate with the scope through my own LabVIEW program...

regards

[AnalogKid2DigitalMan]

How about NI's GPIB-120B Isolator/Extender?

http://sine.ni.com/nips/cds/view/p/lang/en/nid/203221 

I also think there are other companies than manufacture such devices using galvanic or optical isolation, typically transparent to the user/program.

-AK2DM

[_zeyol_]

it provides only 60 Vdc isolation, I need 600 ^^

but I found some usb isolators, which could be the solution (because i connect the gpib to the computer through usb)...

thanks a lot for help