1-2. The Model 721A Lead Compensator is a device designed to
compensate for the effects of lead and contact resistance in
voltage-divider measurement circuits. It is particularly
useful in those situations demanding the utmost in accuracy.
It is a useful operational accessory for such high-accuracy
voltage dividers as the John Fluke Model 720A and Model 725A.
RESOLUTION OF RESISTANCE COMPENSATION
MAXIMUM RATIO BETWEEN DIVIDER RESISTANCES 4000 to 1.
MAXIMUM ALLOWABLE LEAD RESISTANCE 150 milliohm s.
MAXIMUM DIVIDER VOLTAGE 1500 volts, dc or peak ac.
10-turn, 150-milliohm, slide-wire potentiometer.
18-position rotary switch.
BINDING POSTS Gold plated copper.
Grounds input voltage terminals to permit compensation for
3-1/2 high x 19" wide x 6" deep.