Agilent Technologies L4400 manual CALibrationBEGinCURRent 1, @1001

AL4451A and L4452A Calibration Procedures

CALibration:BEGin:CURRent 1, (@1001)

6Measure the DAC output on the DMM. Subtract the current offset measured in Step 2 from the reading. Write this value to the DAC using the command:

CALibration:POINt? <value> (measured current in Amps)

Note the DAC output which is now calibration point 2 (Table A- 3). Subtract the offset voltage from the new DMM reading and write the value to the DAC as above.

7Repeat Step 6 until the 13 curent calibration points have been entered and measured. ”0” is returned after the last calibration point (point

13)indicating the end of the sequence.

8Separately connect L4451A channels 2, 3, and 4 to the DMM as shown in Figure A- 1. Repeat Steps 5 through 7 for each channel until calibration points 1 through 13 have been measured and entered.

Table A-4. L4451A DAC Current Calibration Points.

Calibration Point	Minimum	Maximum	Result
	Expected Value	Expected Value
1	-2.0 mA	2.0 mA
2	-10.0 mA	-8.0 mA
3	-10.9 mA	-8.0 mA
4	-11.5 mA	-9.5 mA
5	8.0 mA	10.9 mA
6	9.0 mA	11.0 mA
7	9.5 mA	11.5 mA
8	-22.0 mA	-16.0 mA
9	-22.0 mA	-16.0 mA
10	-22.0 mA	-16.0 mA
11	16.0 mA	22.0 mA
12	16.0 mA	22.0 mA
13*	16.0 mA	22.0 mA

* Current calibration constants for the channel are saved in non-volatile memory after completion of this step.

260 L4400 User’s Guide