I need to measure the true RMS voltage of a Sine wave with a DC offset of two different high voltage power supplies (PS1 and PS1).
PS1 DC offset: -6600 VDC nominal
PS2 DC offset: -9300 VDC nominal
Sine wave: 8.98 V peak relative to DC offset of PS1 or PS2.
Any ideas on how to employ a device such as the AD536A or AD637 to achieve this would be greatly appreciated.