HP3403C RMS Voltmeter

HP3403C True RMS Voltmeter

HP3403C front view

(click images to enlarge)

3403C display unit

Display unit

Autorange and Log Boards

Options: Autorange (top), Log converter (bottom)

3403C card cage

Card cage

3403C, options removed

Sans options

RMS converter and interface

RMS converter and interface board - can be flipped 180 degrees for rear panel inputs

RMS converter interior: Board A2 (attenuator, amplifier, thermopile)

RMS converter interior

RMS converter interior: Board A3 (Filter)