1. Slide switch to OFF posion unl unit is intended for use.
2. NOTE that the baery provides power to indicang lights only.
a. The baery does not aect the funcon of the instrument as a resistance reference.
b. The posion lights are provided as a convenience for the operaon of the unit during use.
A. The PAR-809C is a precision resistance reference constructed using 1 percent tolerance resistors to
assure accuracy. It is designed to funconally test the resistance range and performance of a va-
riety of equipment during roune audits, including: in-plant wrist strap checker range,
footwear checker range, and other resistance indicang devices.
B. Used in conjuncon with the Prostat PRS-812 or PRS-801 Resistance Meters, the PAR-809C func-
onally tests performance of the Prostat PWA-805 Wrist Strap Auditor. Calibraon of resistance
meters is easily conrmed using the PAR-809C.
C. Proper use of the PAR-809C insures accurate, funconal performance conrmaon of crical ESD
control tools.
A. Conrming Wrist Strap Tester Resistance Performance Range
1. Plug the two supplied test leads into the PAR-809C receptacles.
2. Plug one PAR-809C test lead into the wrist strap tester’s Wrist strap Ground Cord receptacle.
3. Rotate the PAR-809C’s Posion Selector knob to Posion 1, the lowest resistance reference.
4. Turn ON the PAR-809c’S posion indicang lights by sliding the switch located on the
side of the instrument to the ON posion.
5. Insure the wrist strap device under test is ON and funconal.
6. Using the second PAR-809C test lead with metal alligator clip installed, press the Push to Test
buon or plate on the wrist strap tester.
a. The wrist strap tester PASS or indicaon should actuate upon contact with the
PAR-809C test lead alligator clip to the wrist strap tester’s push to test buon or plate.
b. Note the reference resistance value and the response of the wrist strap device under test.
7. Vary the PAR-809C reference resistance by rotang the Posion Selector Knob on the face of
the PAR-809C to the next posion and repeat step 6.
5
Rev. B / January 2012
PAR-809C Variable Resistance Reference
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