78 34405A User’s and Service Guide
4 Performance Tests and Calibration
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
Ta ble 5 DC Voltage Gain Verification Test
Input Function
[1]
Range Quick Check
Error from Nominal
1 year
100mV DC Volts 100mV ±30 µV
-100mV 100mV ±30 µV
1V 1 V Q ±0.3 mV
-1V 1 V ±0.3 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.
34405A users guide.book Page 78 Saturday, September 2, 2006 3:38 PM
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