Anybody use Multisim out there? I'm trying to run a simulation using Channels A and B on the oscilloscope simultaneously. However, I get only one trace on the o-scope simulation display (the other one completely disappears) unless the two channels are on different volts/division. It doesn't matter which way they go. Just that if they're on the same vertical scale, only one waveform appears on the display. I've done this before and not had this problem... so I don't understand. Did some setting get messed up?