HUNG CHANG 3502C PDF

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Welcome, Guest. Please login or register. Did you miss your activation email? This topic This board Entire forum Google Bing. Print Search. Mikeva Contributor Posts: Hi guys, I recently bought my first oscilloscope used and although all the functions work ok,I'm having problem with the vertical gain on the first channel. It can't measure the voltage right. The same happens if i try to measure dc voltage from my power supply. For 10 vdc it reads about 7. I found the schematic and tried to calibrate it but the trimmer which is responsible for this is almost fully turned clockwise giving the measurements i described.

I checked all the voltages except the 1. I didn't found any obvious fault on the components measurements. There is an 15 pin hybrid ic marked AX 2 per channel that maybe is the cause for the fault but i cannot find any information about it. Does anyone knows what ic is that? Any help will be greatly appreciated. Input the same signal on both channels and trace it through, figure out where they diverge. Hopefully this happens in the discrete so before the hybrid.

Sent from my iPad using Tapatalk. Does the cal potentiometer knob work correct? It has the same gain as the B channel. There was an error while thanking. SMF 2. EEVblog on Youtube.

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