Agilent Technologies 6813B, 6811B, 6812B manual Front Panel Calibration, Enable Calibration Mode

B - Verification and Calibration

Front Panel Calibration

WARNING: LETHAL VOLTAGES. Ac sources can supply 424 V peak at their output. DEATH on contact may result if the output terminals or circuits connected to the output are touched when power is applied. These procedures must be performed by a qualified electronics technician or engineer trained on this equipment.

The following procedures assume you understand how to operate front panel keys (see Chapter 4).

Enable Calibration Mode

	Action	Display
1.	Reset the unit by selecting Output, scrolling to the *RST command and	*RST
	pressing Enter.
2.	To begin calibration press Shift Cal, scroll to CAL ON and press Enter.	CAL ON 0.0

3.Enter the calibration password from Entry keypad and press Enter. lf the password is correct the Cal annunciator will come on.

If CAL DENIED appears, then an internal switch has been set to prevent the calibration from being changed. (see the Service Manual.)

lf the password is incorrect, an error occurs. If the active password is lost, the calibration function can be recovered by setting an internal switch that defeats password protection. (see the Service Manual.)

CAL DENIED

OUT OF RANGE

Calibrating and Entering Voltage Offset Values

Connect the negative terminal of the DVM to the COM output terminal. Note that some calibration points are negative; be sure to enter the CAL:DATA as negative values when required.

Action Display

4.Connect the DVM (dc volts mode) directly to the ac source. Do not connect the ratio transformer or load resistor shown in Figure B-1.

5.	Press Shift Calibration, scroll to the CAL VOLT OFFSET command, and	CAL:VOLT:OFFSET
	press Enter.
6.	Press Shift Calibration, scroll to the CAL LEV P1 command, and press	CAL:LEV P1
	Enter to select the first calibration point.
7.	Press Shift Calibration, scroll to CAL DATA 0.00, and use the Entry	CAL:DATA 0.00
	keypad to enter the dc voltage value displayed on the DVM.
8.	Press Shift Calibration, scroll to the CAL LEV P1 command, use ° to	CAL:LEV P2
	scroll to the P2 parameter, and press Enter. This selects the second
	calibration point.
9.	Press Shift Calibration, scroll to CAL DATA 0.00, and use the Entry	CAL:DATA 0.00
	keypad to enter the dc voltage value displayed on the DVM.
10.	Press Shift Calibration, scroll to the CAL LEV P1 command, use ° to	CAL:LEV P3
	scroll to the P3 parameter, and press Enter.

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