Ac Voltage Accuracy With A Dc Offset; Non-Operator Fuse Replacement; Non-Operator Fuse Replacement Locations - Fluke 5500A Operator's Manual

5500A
Operator Manual

7-30. AC Voltage Accuracy with a DC Offset

This verification test is optional. It is not necessary to guarantee the full
calibration of the instrument. However, it may be useful when
troubleshooting an instrument when other functions and/or parameters are
incorrect.
The AC Voltage Accuracy with a DC Offset tests the accuracy of the ac output in the
presence of a dc offset. For this test, be sure to ac couple the input to the meter.
Nominal
ACV
Value (V)
3.3 mV
33 mV
330 mV
3.3 V

7-31. Non-Operator Fuse Replacement

In addition to the operator-replaceable line fuse (see "Replacing the Line Fuse"), there
are additional fuses mounted on printed circuit assemblies (PCAs) internal to the 5500A
Calibrator. The internal fuses are summarized in Table 7-3 and are not operator-
replaceable. For instructions on replacing a PCA fuse, refer to the 5500A Service
Manual (PN 105798).
Fuse Description
0.125 A, 250 V, Slow
Blow
0.5 A, 250 V, Slow Blow
2 A, 250 V, Slow Blow
W To ensure safety, use exact replacement only
7-26
Nominal DC
Frequency
Value (V)
(Hz)
50 mV 1 kHz
500 mV 1 kHz
5 V 1 kHz
45 V 1 kHz
Table 7-3. Non-Operator Fuse Replacement Locations
Printed Circuit
Assembly
A5, Synth Z Board
A12, Filter Board
A3, Mother Board
Note
Measured Value
(VAC)
Reference
A5F2, A5F3
A12F1, A12F2
A3F1 to A3F10
Deviation 90-Day Spec.
% (%)
0.716%
0.101%
0.038%
0.048%
Quantity Part
Number
2 832261
2 831990
10 806331