Associated Research 3030D, Operation And Service Manual, Page: 40 / 43

CALIBRATION
36
CALIBRATION PROCEDURES
This instrument has been fully calibrated at the factory in accordance to our published
specifications. It has been calibrated with standards traceable to NIST. You will find in
this manual a copy of the Certificate of Calibration. It is recommended that you have this
instrument recalibrated and a safety check done at least once per year. AR recommends
you use Calibration Standards that are NIST traceable, or traceable to agencies recognized
by NIST to keep this instrument within published specifications. End user metrology
standards or practices may vary. These metrology standards determine the measurement
uncertainty ratio of the calibration standards being used. Calibration adjustments can only
be made in the Calibration mode, calibration checks can only be made in the Test mode
of operation.
Calibration Equipment Required:
The following equipment will be needed to properly calibrate your instrument.
Digital Multimeter with the minimum ranges;
ac voltage: 10 VAC
ac current: 30 AAC.
CALIBRATION PROCEDURE:
To enter the calibration mode the instrument must be in the OFF position. Using a pen or
small screw driver, press and hold the rear panel recessed calibration key, then turn on the
Input Power Switch. The display will show
:
C a l i b r a t i o n M o d e
S e t : V v : A
Press the SET key for volts calibration or the Down (
∨
) arrow key for amps.
1. Calibration of Voltage
Equipment needed: STANDARD AC VOLTMETER capable of measuring 10VAC.
Please connect a standard ac voltmeter with 10V minimum full-scale range to the current
and return connectors. Then press the SET key on the front panel. The instrument will
provide approximately 6.0VAC on the output connectors and the display will show:
V o l t a g e = __ V
Please use the Up (
∧
) or Down (
∨
) arrow keys to enter the reading from the ac voltmeter
into the instrument, then press the SET key to store the voltage setting. To exit without
changing the calibration, press the EXIT key.