Re: 7834 Missing Trace

Roger Evans

In gated mode the readout displays between sweeps, so if you have nothing to trigger the sweep then you get no readout, I just checked this on a 7904.

It is quite easy to accidentally knock the AB horizontal buttons on the mainframe and also the small trigger select buttons on the plugin so that none of the buttons is depressed. If you have accidentally selected a mode which is not auto sweep or have nothing to trigger the timebase, then that could account for the sudden disappearance of the trace.

If you can provide an input signal, set the vertical and horizontal mainframe buttons appropriately, get the timebase to show the 'triggered' light and still have no visible trace then you have a more serious problem.



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