Does the trace compress to the left with both timebases?
For the part which is not compressed, is the timebase still in
calibration?
Unfortunately I suspect the problem is going to be somewhere around
U760 on schematic 7 but I would also check the levels of STORE and NOT
STORE to the right of U760 on schematic 7.
On Mon, 23 Jan 2012 19:31:20 -0000, "david_s5y" <david_s5@...>
wrote:
On a tek 2230 in non-store mode, the displayed signal becomes compressed when position is moved to the left.
So if I have a 5K square wave displayed at .1 Ms the first 1/2 of the wave will be 60% the width if I move it to the right. It also looks like brighter.
+==+==+==+==+==+==+==+==+==+==+
---___---___--- <moved to right>
+--- Short and brighter.
V
==___---___---
What needs adjusting
David Hess