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WaveyDipole · 8th May 2021, 4:21 pm

I did a further small experiment with the X-Y deflection. I centred the spot and checked the X1 and Y1 plate voltages. They were 0V as expected. I then moved the spot to the outer edge of the CRT in both directions and both axes. The Y axis required ±5V for full deflection in both directions, whereas the X axis required ±7V for full deflection in both directions. Clearly something is not right here?

8th May 2021, 4:21 pm	#3
WaveyDipole Nonode Join Date: Mar 2013 Location: Leicester, UK Posts: 2,535	Re: Cossor 1039 Oscilloscope I did a further small experiment with the X-Y deflection. I centred the spot and checked the X1 and Y1 plate voltages. They were 0V as expected. I then moved the spot to the outer edge of the CRT in both directions and both axes. The Y axis required ±5V for full deflection in both directions, whereas the X axis required ±7V for full deflection in both directions. Clearly something is not right here?