Not very clear, but if CH2 position is moving CH1 trace in store mode, you have the connections swapped.
JC
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--- In TekScopes@..., "david_s5y" <david_s5@...> wrote:
Hi,
This is getting weirder, but I am sure it means something to someone....
Store is active.
I set up to put a 3.5 V 1kHz signal into CH1, and turned the CH1 sensitivity down to 5mV. *Ch2 is set to ground*
Then Chn 1 displayed a clamped to a square wave version of the input.
movable by Chn 2' position to only show the half the signal (positive) peeks on the CRT.
Now setting Vert Mode to both gives me 2 versions of the clamped. Chan 2 is 2X the amplitude of chan 1.
Chn 1's Position does nothing. But cha 2's position moves both wave forms.
Setting it to Chn 2 gives me one waveform that is 2X.
As I decrease the Chan 1 Sensitivity the waveform begins to round to a sine wave.
Does this and the +5 V on pin 6 and 11 indicate a bad U2101?
Next Q does someone have a TEK 234-0408B-20, they would like to sell?
David
