Agilent Technologies L4400 manual DAC Output Adjustment

AL4451A and L4452A Calibration Procedures

this time. Otherwise, record the offset which will be subtracted from the subsequent voltage measurements.

3Connect channel 6 of the L4452A as shown in Figure A- 3. Configure the L4452A to output the voltages listed in Table A- 5. 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- 5.

4Repeat Step 3 for channel 7.

NOTE It is not necessary to test the voltage output at the full rated 10 mA load.

Table A-5. L4452A Output Voltage Levels (Channels 6 and 7).

Output Voltage	Error From Nominal
	(1 Year)
10V	± 45 mV
0V	± 20 mV
-10V	± 45 mV

DAC Output Adjustment

The following analog output adjustment procedure is to be performed following a 1 hour warm up period.

This procedure sets a zero adjustment and a gain adjustment constant for each L4452A DAC output channel (6 and 7). You must complete all the adjustments on one channel before adjusting the other channel.

Voltage Adjustments

1With the DMM disconnected from the L4452A, 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.

3Unsecure the instrument for calibration using the command:

CALibration:SECure:STATe 0, <code>

262 L4400 User’s Guide