Testing The Meter - Fluke 5520A Operator's Manual

5520A
Operators Manual

4-60. Testing the Meter

You can use the error mode feature of the calibrator to test the meter. To verify that all
ranges of all functions are within specifications, proceed as follows:
1. Turn on the calibrator and allow it to warm up.
Ensure that the calibrator is in standby mode before making
any connection between the calibrator and tester. Dangerous
voltages may be present on the leads and connectors.
2. Verify that the calibrator is in standby and connect the DMM as shown in
A
3. Test the dc voltage function as follows:
4-62
Figure 4-18.
87 TRUE RMS MULTIMETER
MIN MAX
RANGE HOLD H
REL Hz
PEAK MIN MAX
mV
mA
V
A
µ
A
V
OFF
COM
mA A V
Figure 4-18. Cable Connections for Testing an 80 Series General Functions
Turn on the DMM and set its function switch to L.
a.
Set the warmed up calibrator to 3.5 V dc. Press O.
b.
c. Use the output adjustment controls to adjust the calibrator output for a reading
of +3.5000 on the DMM display.
d. Verify that the error shown on the control display is less than the specification
for the DMM in its Users Manual.
Check the DMM error at 35.0 V, -35.0 V, 350.0 V. Hint: use the X. Verify
e.
the errors are within specification. When X causes the output to go over
33 V, the calibrator goes into standby. When this happens, press O to
operate.
f. Check the DMM error at 1000 V to verify it is within specification.
Set the output of the calibrator to 350 mV and press O. Verify the errors are
g.
within specifications.
WWarning
5520A CALIBRATOR
NORMAL AUX SCOPE
V, , ,RTD A, -SENSE, AUX V
OUT
HI
LO
TRIG
GUARD 20A
20V PK MAX TC 20V PK MAX
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