Sorry, a typo, I read my poor handwriting of 7854 (the mainframe
itself) as a 7B54! You are quite right, the other plugin is a 7B7!
Apologies. Thank you very much for the clear and detailed
instruction, but one question, was I clear in explaining this spike
is a single one, just at turn on? Not an ongoing event like ripple? I
will try your instructions and report back, thanks again. I was
expecting to have to use the storage facility, this looks a lot more
straightforward.
Best Regards,
Chris Wilson. 2E0ILY
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On 12/21/2014 09:05 AM, Chris Wilson chris@... [TekScopes] wrote:
has 7A26, 7A19, 7B85 and a 7B54 plug in
Is that a 7B87 timebase plugin rather than 7B54?
to look at your PS spikes you can use the 7854 in analog scope mode, no
memory storing, 7A26 in DC mode, 2 Volts per division, triggering normal,
trigger knob fully counterclockwise,
X10 probe with readout change so 2 Volts per division is for real, + triggering,
and move the trigger level up clockwise until it triggers on
something at 5 Volts showing a frequent
trigger and thus bright line at the DC level volts. Then move trigger level up some
more to get a more faint display of spike triggers. Then increase the sweep rate to
see detail.
John
