Hi,
I recently acquired a 6046 differential probe from tektronix.
I'm trying to use it measure current , across a .1 ohm resistor current sensor.
I notice that there is over and under shoot. Coesn't really look real to me.
I don't have a manual, unfortunately. Looking for advice about how to adjust this thing, and what to expect steps and results:
- Turning a laser diode on and off at 3 kHz.
- When I put it across the current sense resistor, I see an overshoot on the rising edge, but shen I turn the probe around, I don't see it. THe signal is about 50 mV It seems that the channels act differently, not differentially.......
- I adjusted the compensation on the .4 V square wave on the scope. I left one side floating (or grounded) and adjusted the other to make it square. It has a little overshoot too, and I can't get rid of it.
- Strangly, when I turn the laser on, It ramps up, but the "overshoot" is there even during ramp up.Perhaps it's pickup on some other signal. But I don't see why a differential probe would do this.
Any ideas on the cause of this overshoot? I'm trying to measure in the
2 mv accuracy range.Anyway, anyone have a manual?
thanks,
Adam