Hi,
got a TDS3034B from which channel 4 looks dead... i.e. with the internal 1khz signal, there are only small spikes (+- 100-200mv) at 1ms intervals, but also negative spikes, also at 1ms intervals, but shifted 0,5ms from the positive ones...
Other channels are OK.
Did not do anything so far, but has anyone encountered similar symptoms ?? error log only reports issues with the user interface (although it shows "CPU:9"... ??), but acquisition:0
Any hints appreciated...