Performance Tests and Calibration
4
34405A User’s and Service Guide
73
Gain Verification
This test checks the full- scale reading accuracy of the instrument.
Verification checks are performed only for those functions and ranges with
unique gain calibration constants.
DC Voltage Gain Verification Test
1
Connect the calibrator to the front panel HI and LO input terminals.
2
Select each function and range in the order shown below. Provide the
input shown in the table below.
3
Make a measurement and observe the result. Compare measurement
results to the appropriate test limits shown in the table. (Be certain to
allow for appropriate source settling when using the Fluke 5520A.)
[1] Select 5½- digit measurement resolution
Q
= Quick performance verification test points
Table 5
DC Voltage Gain Verification Test
Input
Function
[1]
Range
Quick Check
Error from Nominal
1 year
100mV
DC Volts
100mV
±33 µV
-100mV
100mV
±33 µV
1V
1 V
Q
±0.31 mV
-1V
1 V
±0.31 mV
10V
10 V
±3.0 mV
100V
100 V
Q
±30 mV
1000V
1000 V
±0.3 V
Caution: Set the calibrator output to 0V before disconnecting it from the multimeter input terminals.
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