Hi all,
I've borrowed a Tektronics 2211 (an oldie Google tells me) from work to so some work at home on some small circuits.
Now all the signals I've looked for, the amplitude is way off from scale, even on a x1 probe and I've got a suite of probes to try.
Now, tell me where I'm being a numpty here!
I've set the coupling to DC, and I've used the ground to provide the reference to get the Channel -1 line on the centre graticule, I've tested my accurate DC source at 5V with my calibrated 85V, it's as near to 5V as it'll ever be.
It's connected with the straight coax as shown.
The line barely moves, I'm getting even less on Channel-2. The 'scope is absolutely doing my head in! It's making tracing signals very very awkward.
All have a good point and laugh, here are my settings:
You can just see the trace sitting about a line's width above the centre graticule, this is with the voltage source a definite 5V and 1V/Div.
Is it me, or is there something else going on?
To add, I've got all storage (where there many of these storage CRT 'scopes back in the day?) switched off.
Cheers,
Ed