Agilent Technologies L4400 manual Voltage Output Verification, Error From Nominal, 90 day

AL4451A and L4452A Calibration Procedures

Voltage Output Verification

1With the DMM disconnected from the L4451A, set the DMM to the 100V range or the lowest range that can measure 16V (do not use autorange).

2Short the inputs to the DMM. The DMM reading is the offset voltage for the selected range. If the DMM has “null” capability, turn it on at this time. Otherwise, record the offset which will be subtracted from the subsequent voltage measurements.

3Connect channel 1 of the L4451A as shown in Figure A- 2. Configure the L4451A to output the voltages listed in Table A- 2. For each voltage level measured, subtract the offset voltage recorded in Step 2 as applicable. The results should be within the limits listed in Table A- 2.

4Repeat Step 3 for L4451A channels 2, 3, and 4.

N O TE	It is not necessary to test the voltage output at the full rated 10 mA load. If
	you test the output using a load, connect the sense terminals.

Table A-2. L4451A Output Current and Voltage Levels.

Output Current	Error From Nominal
	(90 day)
20 ma	± 23 ∝A
15 mA	± 18.5 ∝A
10 mA	± 14 ∝A
5 ma	± 9.5 ∝A
0 mA [1]	± 5 ∝A
-5 mA	± 9.5 ∝A
-10 ma	± 14 ∝A
-15 mA	± 18.5 ∝A
-20 mA	± 23 ∝A

[1] Apply a measured “0” offset to this measurement

256 L4400 User’s Guide