5102 won't recognize differential probe probe

[gnwtci]

I am just setting up a ni 5102 for the first time. Using the NI soft front panel. The scope recognizes the clamp on current probe on channel 1 and appears to read accurately. However, I have a Tektronix P5205 differential probe on channel 0 and the scope gets no reading from it at all. If I plug the probe into the Tek scope I get an appropriate signal. Is there a setting I am missing for differential probes?

[Josh H]

This is what Tektronix has to say about the probe on their website:

"The P5205 is a 100 MHz Active Differential Probe capable of measuring fast rise times of signals in floating circuits. This 1,300 V differential probe can measure safely voltages in IGBT circuits such as motor drives or power converters. It is specifically designed to operate on Tektronix oscilloscopes with TEKPROBE® interface."

I'm not sure if that means it ONLY works with the "TEKPROBE" interface, but you may want to contact Tektronix with that question.

Best Regards

[gnwtci]

Thanks, you are exactly right. I have used this probe for years, I thought the extra pins on the connector ring were just for scaling. In fact they derive power from the scope. I'll have to get a P5200 with standalone power supply.

[providev]

This thread was very useful to me since I was also having the same query but noticed it was long time ago.

There is an external power supply module from Tektronix that converts the TEKPROBE interface to standard BNC probe interfaces. I've attached the product data sheet below.

http://www2.tek.com/cmswpt/psdetails.lotr?ct=PS&cs=psu&ci=13507&lc=EN

Hope this helps!

Sanka