Chuck said:
"Power supply coupling between the amplifiers would most
certainly have a dynamic component to it. This is purely
static in nature. I can move the dot using the H and V
position controls, and retrace any line on the screen."
Yes, but it appears all the measurements done have been at DC and low frequencies. The deflection amplifiers and power supplies have finite rejection in terms of CMRR and PSRR, at DC as well as a function of frequency. What if the amplifiers change slightly (linearity), or the CM voltage affects them or the deflection plate bias at the extremes (corners) of the display?
Power supply and CM and differential gain measurements could be done at DC, with high a resolution DVM.
One thing that may help is to run the display in a raster mode at fairly high frequency. In my 7K tester plug-in, I run a 10 or 20 MHz oscillator and deflect the vertical to just over the screen limits, and in un-triggered, and/or the right sweep settings, get a full-screen raster of the X and Y range, for viewing the overall brightness capability and uniformity, pincushion, and bad phosphor spots. This can show the box outline at the extremes, but nothing about the center response - but it is at high rep rate. The same can be easily done by putting in a high frequency sine or triangle and setting up the sweep to fill the screen. This sort of test may not be appropriate for MCP displays though, since it needs a lot of beam current to fill the entire screen area at high brightness.
Regarding the 2467 vs 7104, I see now that they are quite different - I thought they used the same CRT. If the 2467 one is much more compact, I can picture that a lot of tradeoffs were made.
Ed
