I. Introduction
A. The Prostat PAR-809C Variable Resistance Refer-
ence is a precision wide range resistance instru-
ment used to measure the resistance range per-
formance of wrist strap testers, footwear testers
and other resistance indicating meters, fixtures
and instruments.
1. The device under test’s resistance perfor-
mance range is indicated by the device’s
Pass/Fail lights when the PAR-809C is posi-
tioned to a selected resistance.
2. Every PAR-809C is individually inspected
and measured for precise resistance of each
reference position before leaving the factory
and recorded.
B. The PAR-809C is intended as a resistance reference for DC circuits of 100 volts or less.
1. The factory resistance references are documented at 10 and 100 volts DC.
2. Inspection and re-certification of resistance reference values should be conducted annually.
II. Cautions & Warnings
A. Do not use the PAR-809C on circuits exceeding 100 volts DC.
B. As with any electrical device, use proper electrical precautions to avoid personnel shock.
C. Only qualified instrument repair personnel should open or repair the PAR-809C.
D. Do not store or use in damp environments.
E. PAR-809C Equipment and Accessories
1. One PAR-809C Variable Resistance Reference Instrument
2. One 9 volt DC battery used to power position indication lights.
3. Two (2) 24 – 30 inch test leads equipped with male banana plugs.
III. Inspection & Preparation for use
A. Install provided 9 volt battery by sliding battery com-
partment open and firmly snapping battery terminals
to the appropriate connectors. Battery can only be
connected in one way. Re-close the battery compart-
ment.
B. Turn ON the
ON/OFF
slide switch located at the side
of the unit: vary the rotating position knob to insure
all indicating lights are functional.
4
Rev. B / January 2012
PAR-809C Variable Resistance Reference
