Hello
Many moons ago I saw a topic on here regarding the 2230 and a storage display problem and as far as I could tell it never reached a conclusion. Unfortunately it is the problem I have now...or very similar. Therefore, I wonder if anyone has a recollection of the problem and what the solution is or was? Briefly, in storage mode BOTH traces are displayed on top of each other when 'both' are selected so it just looks like one trace. Using only channel 1, inputting a 2Vpp signal gives a perfect image BUT half the actual voltage, 1Vpp.Inputing a square wave into channel 2 same amplitude it's 25% of the voltage. Select both and the waveforms are summed giving a display that's a little of each, straight sides and rounded tops. If a 2Vpp sine is input to BOTH channels and only channel one is activated and displayed in storage then you get a 2Vpp sine wave which is what it should be. In short, it seems like there is some mixing going on of the waveform content and amplitude. Normal mode is perfect in all respects. As I recall there was a suspicion U2101 was the culprit but it was never confirmed. At the moment I have the 4 wire connection plug that goes to channel 2 on the storage board removed and the 2 signal wires earthed with jumpers. I can still use channel 1 storage and multiply the amplitude by 2 as a rough guide although it's far from accurate. Anyone remember something like this and what the cause was? Many thanks in advance.
Kevin