Re: HP 16533A Scope Card repair - HELP! :o)
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I got curious:
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"what if the calibration output is broken?" It uses the same BNC as channel 1, sits near channel 1, what would happen if someone plugged a scope probe on calibrator output and tested something with that? Well, with the scope connected to the output of my funcion generator and 100MHz scope, I see the SAME output of the generator on both screens O_O Is a 7.5V square wave the right signal output for the calibrator? I used the Probe output -> DC level option in calibration. Seems the DC Output in all calibration options are OK. Internal scope measures it OK too (I have to get out of the scope app, go to calibration, change voltage on the DC Level option, go back to scope app, measure DC voltage. Errors: The errors are in the photo of my blog. Everything goes well up to hysteresis on channel 2. From now on, everything is an error. Trigger level, trigger delay and logic trigger fail on both channels. Hysteresis is ok on channel 1. Same 1v square wave on channel 1 and 2, same amplitude, 10v also the same. Seems the relays are working. I felt lost. A schematic would help, I don't know where to go next :\ Em 28/04/2019 15:16, Mark Litwack escreveu: It's probably not the hybrid since you're getting a signal on both channels according to your web page.? Also, the calibration cables are not so sensitive that a mm is going to matter, so the ones you made should be fine. --
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Alexandre Souza