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9. Calibration Procedure
This instrument has been fully calibrated at the factory in accordance to our published
specifications. It has been calibrated with standards traceable to the National Institute
Standards & Technology (NIST). You will find in this manual a copy of the "Certificate of
Calibration". It is recommended that you have this instrument re-calibrated 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 and calibration checks or verifications can only be
made while operating in Test mode.
9.1. Warranty Requirements
AR offers a standard one-year manufacture’s warranty. This warranty can be extended an
additional four years provided that the instrument is returned each year to Associated Research,
Inc. for it’s annual calibration. In order to be eligible for the extended warranty instruments
must be returned to Associated Research, Inc. for calibration service at least once every twelve
months.
A return material authorization number (RMA) must be obtained from AR before returning
this instrument for calibration. To obtain an RMA number or for information regarding our
warranty please contact our Customer Support Representatives at 800-858-TEST.
Required Calibration Equipment
• 0 - 5 KV AC/DC Metered Voltage Divider.
• 20 mA AC, 10 mA DC Ammeter.
• 0 - 30 mV AC Millivoltmeter.
• 10Ω, 0.25 watt resistor, 250 volt.
• 50MΩ, 0.25 watt resistor, 1000 volt.
• 500MΩ, 0.25 watt resistor, 1000 volt.
• 100KΩ, 175 watt resistor, 4000 volt.
• 1MΩ, 20 watt resistor, 4000 volt.
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