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262 L4400 User’s Guide
A L4451A and L4452A Calibration Procedures
this time. Otherwise, record the offset which will be subtracted from
the subsequent voltage measurements.
3 Connect 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.
4 Repeat Step 3 for channel 7.
Table A-5. L4452A Output Voltage Levels (Channels 6 and 7).
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
1 With 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).
2 Short 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.
3 Unsecure the instrument for calibration using the command:
CALibration:SECure:STATe 0, <code>
NOTE
It is not necessary to test the voltage output at the full rated 10 mA load.
Output Voltage
Error From Nominal
(1 Year)
10V
± 45 mV
0V
± 20 mV
-10V
± 45 mV