Calibration Procedures
This section contains procedures for adjusting the instrument’s performance (calibration).
There is no separate calibration for Diode or Continuity, because these functions are
based on the resistance measurement, which is calibrated. Also, there is no calibration
for gate time because this functionality is controlled by digital logic. There is no cal-
ibration for capacitance gain and, for the 34465A and 34470A, no calibration on the 1,
10, and 100 µA DCI ranges
Use one of the following sets of procedures based on the DMM model number:
l
34460A and 34461A Calibration Procedures
l
34465A and 34470A Calibration Procedures
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 cor-
rection factors in non-volatile memory. This data is not changed by cycling power,
, or
.
Keysight Technologies Calibration Services
Keysight Technologies offers calibration services using automated calibration systems that enable Key-
sight to provide calibration at competitive prices. See
for information on con-
tacting Keysight.
Calibration Adjustment 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 war-
ranted only if calibration is made at regular calibration intervals. Keysight Technologies never recom-
mends calibration adjustment intervals beyond two years.
Calibration is Recommended
Whatever calibration interval you select, Keysight Technologies recommends that complete re-calibration
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 calibration adjustments are performed. Use the calibration count to verify that all
calibration adjustments have been performed.
Time Required for Calibration Adjustment
The instrument can be automatically calibrated under computer control, including complete calibration
adjustment procedure and performance verification tests, in less than 30 minutes once the instrument is
warmed–up (see Test Considerations).
Calibration Adjustment Procedures
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Keysight True
volt
Series Operating and Service Guide
