Monroe Electronics Charge Plate - System - model 282CPS - Manual (Page 3)

OPERATING INSTRUCTIONS
INSTALL THE MODEL 96138 ADAPTER PLATE
The case of the Model 282A-1 fieldmeter has two slots along its sides. The TOP slot is the one
closest to the instrument front. Slide the tabs of the Adapter Plate ground plate into the TOP slots of
the meter case as far as they will go.
MODEL 282A-1 FIELDMETER
Refer to the 282A-1 Operator’s Manual for operating instructions.
MODEL 280 CHARGER
This unit is turned on by depressing the momentary pushbutton. The recommended method of use is
to:
1. Touch the desired polarity terminal to the floating plate.
2. Touch the opposite polarity terminal with your finger while wearing a grounded wriststrap. (The
user’s body provides the ground path for both the Model 280 charger and the Model 282A
fieldmeter.)
3. Depress the pushbutton power switch on the 280 charger. Plate voltage should indicate over
1000V.)
4. Remove the connection of the Model 280 charger from the plate while keeping the power
pushbutton depressed.
5. Begin timing the moment contact is broken with the plate.
Polarity selection
The terminals are labeled (+) and (-). To provide a POSITIVE voltage output, connect the negative (-)
terminal to ground while pressing and holding the power button. To provide a NEGATIVE voltage
output, connect the positive (+) terminal to ground while pressing and holding the power button.
IMPORTANT: A ground path must be provided between one of the output terminals of the 280 and
the ground reference of the 282A-1 fieldmeter and adapter plate. This is normally provided by
holding the 280 charger in one hand and the 282A-1 with adapter plate in the other. If this is not
possible, use a test lead to connect one of the 280 output terminals to the 282A-1 ground connection
(output jack.)
CALIBRATION
Monroe Electronics instruments are factory calibrated prior to shipment. Calibration should be
performed annually, or more frequently if specified by contract or company policy. The instruments
should also be recalibrated any time it has been repaired or tampered with. Monroe Electronics will
recalibrate the instruments at a reasonable cost or provide information and procedures regarding
calibration upon request. Our calibration services offer traceability to NIST or MIL-STD-45662A.