18
Rev. C / January 2012
PRS-812 Resistance Meter
8. Remove the calibration shunt assembly from the lead terminals
9. The PRS-812 is now ready for wide range measurements from 0.1 to 1.0E+12 Ohms
Figure 8: Complete Calibration Sequence by Pressing RESET. To confirm Calibration,
Press TEST to measure the Calibration Shunt resistance. Shunt resistance should display
1.02 Ohms
±
0.02 Ohms
VI. Instrument Operation
A. Overview of PRS-812 Operation & Measurement Test Cycle Sequence
The following 10 points provide a general overview for calibrating and using the PRS-812 for resis-
tance measurements.
1. Slide Battery Buss Cut Off switch to
ON
2. Press Red
ON/OFF
button once to power up PRS-812
a. Instrument performs circuit check, and tests LED’s, LCD display, and battery voltage.
b. LCD displays
GOOD
if battery voltage suitable for instrument operation; displays
Lo
if bat-
teries require replacement
c. Instrument ends startup sequence in default
AUTO
, Exponent Display Mode 1.0EXX
3. Select Function Mode if other than
AUTO
, Exponent Display Mode 1.0EXX is desired by press-
ing
MODE
button
4. Perform low resistance range calibration after 3 minute instrument warm-up, if desired
a. Install Calibration Shunt between positive (+) and negative (-) terminals
b. Press
RESET
then
CLEAR
within ½ second
Содержание PRS-801
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