Keysight 34401A, Руководство по обслуживанию

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1/100th Scale AC Adjustment Procedure
This calibration procedure is used to enhance the ac volts and ac current
measurement accuracy for <1/100th scale inputs. The single calibration
generates a correction constant used for all ranges of the ac volts and
ac current measuring functions. This adjustment should be performed
after servicing ac section circuits or after replacement of the calibration
RAM U505
.
This calibration procedure is available starting with firmware
Revision 2 (REV 02-01-01).
Inputs from 9 mA to 11 mA are valid for this procedure. A failure to
complete this procedure correctly will generate error 736, “AC rms 100th
scale linearity correction out of range”.
Configuration: AC current
1 A range
6
1
⁄
2
digit (slow or fast resolution –
MEAS MENU
)
AC FILTER slow (
MEAS MENU
)
1
Perform the complete ac volts gain calibration procedure.
2
Apply 10 mA, 1 kHz ac to the current input terminals.
3
Enter the CALibration MENU as shown in steps 3 through 6 of
the “Gain Adjustment Procedure” section on page 80. Enter the
exact known value for the 10 mA ac input as shown in step 5.
4
Check that the multimeter reads within the following limits of the
applied input after the calibration has completed: 0
±
400
µ
A ac.
Chapter 4 Calibration Procedures
Optional Gain Calibration Procedures
84