John Parkins G8KVP
Firstly I'm now thinking the 'ghosting' was a product of other
problems that I've now found along, maybe, with the pulsing readout.
As for the readout, yes if you had set a 1 sec timebase what happened
on the screen was that the readout would flash and the trace would
start across the screen as so on. With a fast timebase the flash
Although I checked the voltages, which were all fine, the ripple
wasn't. I also found the standard leaking caps on the A5 board. So at
the moment the scope is in pieces having those looked at as well as
the Dallas chip. 1991 is the date on that so I thought while I was
inside the thing I'd get that sorted as well.
Once I have that done I'll see if the original problem is still there.
Thanks for the reply
Yes attachments would be useful, if you don't want them, turn them
Tuesday, May 19, 2020, 8:15:08 PM, you wrote:
AO> It's a pity that we only have your description of ghosting here
AO> and in your previous messages (because attachments are not
AO> allowed). I think you will receive more responses if you make the
AO> picture available, for instance by placing it in the Photos
AO> section. "Interferes" with the trace is rather vague. Is there a
AO> ghost image at the trace and going up/down together with the trace position?
AO> Pulsing at the same rate as the sweep is not the same as showing
AO> ghost images. Thinking of Ernestos response, does pulsing mean
AO> that the trace and the readout(s) are displayed alternating?
AO> [BTW I'm not really familiar with this "modern" type of readout, so I probably can't help you.]
AO> On Tue, May 19, 2020 at 07:55 AM, John Parkins G8KVP wrote: