Hi all,
Few days ago I've got a HP/Agilent/Keysight 54610B, like this one below:
It works perfect but ... When I try to compensate my probes and after 5 minutes approx the square signal goes down and down like I show below:
After few minutes:
Then goes to this:
Any suggestions?
Thank you very much!
Best regards,
I think the first thing to sort out is – Is it the probe or the scope input doing this?
Do you have more than one probe and do they all do it?
Do both channels do it?
One explanation of what is happening is the channel is becoming AC coupled (DC resistance is going up).
You could put an ohm meter on the scope input and watch what the resistance does over time.
You could bypass the probes and connect the probe comp output (or other source if you have one) directly to the channel and check out what happens over time.
There are two input impedance modes to the scope. 50ohm and 1meg. Do they both act up over time? Note, you can’t use the probe comp signal with 50ohm input mode.