Calibration - Introduction
This section contains procedures for verifying and adjusting the instrument’s performance (calibration).
There is no separate calibration for Diode or Continuity, because these functions are based on the
Ohms measurement, which is calibrated. Also, there is no calibration for gate time because this
functionality is controlled by digital logic.
Closed–Case Electronic Calibration
The instrument uses closed-case electronic calibration; no internal mechanical adjustments are required. The
instrument calculates correction factors based on reference signals that you apply and stores the correction factors in
non-volatile memory. This data is not changed by cycling power, *RST, or SYSTem:PRESet.
Agilent Technologies Calibration Services
Agilent Technologies offers calibration services using automated calibration systems that enable Agilent to provide
calibration at competitive prices. See Types of Service Available for information on contacting Agilent.
Calibration Interval
The instrument should be calibrated on a regular interval determined by the accuracy requirements of your application.
A 1-year interval is adequate for most applications. Accuracy specifications are warranted only if adjustment is made at
regular calibration intervals. Accuracy specifications are not warranted beyond the 1-year calibration interval. Agilent
Technologies never recommends calibration intervals beyond two years.
Adjustment is Recommended
Whatever calibration interval you select, Agilent Technologies recommends that complete re-adjustment should
always be performed at the calibration interval. This ensures that the instrument will remain within specifications for
the next calibration interval and provides the best long-term stability. Performance data measured during performance
verification tests does not mean that the instrument will remain within these limits unless the adjustments are
performed. Use the calibration count to verify that all adjustments have been performed.
Time Required for Calibration
The instrument can be automatically calibrated under computer control, including complete calibration procedure and
performance verification tests, in less than 30 minutes once the instrument is warmed–up (see Test Considerations).
Automating Calibration Procedures
The adjustment procedures demonstrate front panel adjustment. You can automate the complete verification and
adjustment procedures outlined in this manual. You can program the instrument configurations specified for each test
over the remote interface. You can then enter read back verification data into a test program and compare the results
to the appropriate test limit values.
The instrument must be unsecured to calibrate. See Calibration Security for details.
Refer to the CALibration Subsystem for information on SCPI programming.
Agilent Truevolt Series DMM Operating and Service Guide 311
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