The controls on these are very proprietary and mostly locked down software wise, but the control is designed as a "boxed system" that can be mated to nearly anything so there are around 1000 parameters or more than can be set for various machines, servos, feeback, etc. However, the CRT function parameters are limited. I can switch from a 9" to a 14" monitor and can switch between color and monochrome. I have been resistance to switching the parameter to color because I am not sure what will happen! If I lose the entire display and cannot see anything, I have no way to return the parameter to the prior value other than completely reload the parameters which is a HUGE task!
If I had some confidence switching to color would still be visible, I would certainly do that but not sure if that would change the H freq or not.
I should mention the CRT currently is usable but is seeing the typical issues of CRTs. Horizontal lines, backlight is way too bright, and has burn in. There is just no sense in trying to work with CRT tech as an LCD is just far superior thus my push to convert to that.