Keysight 3458A - Cal

5 Command Summary
88 Keysight 3458A Calibration Manual
CAL
Description
Calibration. Calibrates the internal 7 V reference to an external 10V standard
(CAL10) and does the equivalent of ACAL DCV. Also calibrates the internal 40 K
reference to an external 10 K standard (CAL 10E3) and does the equivalent of
ACAL OHMS. Alternate CAL standard values can be used as described in the first
remark. It also calculates the offset for the front and rear terminals (CAL 0).
Syntax
CAL value [,security _ code]
value
Specifies the value of the adjustment source that will be used to adjust the
multimeter. For highest accuracy. 10 V and 10 K ohm standards are
recommended and the value sent must be the exact output value of the
adjustment source. If the 10 V source actually outputs 10.0001, then specify a
value of 10.0001 in the CAL command.
security_code
When a security code is set to a number other than 0 by the SECURE command,
you must enter the correct security code to perform a CAL. If CAL is not secured
(security code = 0), no security code is required to execute CAL. Refer to the
SECURE command for more information on the security code and how to secure
the calibration of the 3458A.
Remarks
– For highest accuracy, the value sent with the CAL command must exactly
equal the actual output value of the adjustment source. It is recommended
that 10V be used for CAL 10 and 10 K ohms be used for CAL 10E3. NOTE: Any
standard value between 1 V and 12 V or 1 k
W and 12 k W can be used. A value
less than 10 V or less than 10 k
W will introduce additional uncertainty to the
multimeter's accuracy specifications. For example, a 1 V DC standard can be
used instead of 10 V (you would execute CAL 1.0000). A 1 k
W standard can
used instead of 10 k
W (you would execute CAL 1E3). Each case degrades the
accuracy specifications of the instrument.