[AMRadio] Modulator testing

[Robert Nickels]

I'm testing a modulator running a pair of 811s, using a resistive load 
in place the final amplifier.    Normally both primary and secondary of 
the mod transformer have HV applied, so they are at the roughly the same 
DC potential above ground.  To make accurate measurements using a 
grounded oscilloscope,  I am wondering if it would be save to ground one 
side of the secondary where my resistive load is attached.    Both 
windings are obviously rated to withstand high voltages  with respect to 
the frame,  but I can't find any manufacturer's name or part number on 
it, and while I assume the isolation between windings would be 
sufficient,  I'd hate to cause a problem.

Thanks and 73,
Bob W9RAN