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NI PXI-4110 Calibration Procedure
Complete the following steps to verify voltage load regulation:
1.
For each test, adjust the external variable power supply to the specified voltage (
V
ext1
) listed
in Table 14.
2.
Set the NI 4110 to output the voltage specified in Table 14.
3.
Use the DMM to measure the voltage across the output of the specified channel of the
NI 4110 (
V
1
).
4.
Change the external variable power supply voltage from
V
ext1
to
V
ext2
and repeat the
previous step.
5.
Record the NI 4110 output voltage measurements for both external voltages.
6.
Calculate the
Voltage Change Limit
using the formula shown in the following table:
Table 13.
NI 4110 Voltage Line Regulation Voltage Change Limit Formulas
7.
Subtract the two voltage measurements
V
1
-
V
2
to calculate the
Voltage Change
. The test
passes if the
Voltage Change
falls within the calculated
Voltage Change Limit
.
Channel
Voltage Change Limit
1 and 2
± ((
V
1
× 1.00 × 10
-4
) + 1.00 × 10
-3
) × (
V
ext1
-
V
ext2
)
