Fluke ScopeMeter 123, Service Manual, Page: 53 / 96

Performance Verification
3.5 Input A and Input B Tests
3
3-23
ST8129.WMF
Figure 3-8. Test Tool Input A-B to 5500A Normal Output for >300V
2. Select the following test tool setup:
•
Press to select auto ranging (
AUTO
in top of display).
Do not press anymore!
•
Press to open the INPUT A MEASUREMENTS menu, and choose:
MEASURE on A: Vac
•
Press to open the INPUT A MEASUREMENTS menu, and choose:
MEASURE on A: Vdc
(Vdc becomes main reading, Vac secondary reading)
•
Press to open the INPUT B MEASUREMENTS menu, and choose:
INPUT B: ON | MEASURE on B: Vac
•
Press to open the INPUT B MEASUREMENTS menu, and choose:
INPUT B: ON | MEASURE on B: Vdc
•
Move the Input A and Input B ground level (indicated by zero icon ) to the center
grid line. Proceed as follows:
⇒
Press to enable the arrow keys for moving the Input A ground level.
⇒
Press to enable the arrow keys for moving the Input B ground level.
⇒
Using the keys move the ground level.
3. Using set the Input A and B sensitivity to the first test point in Table 3-7.
The corresponding range is shown in the second column of the table.
4. Set the 5500A to source the required AC voltage (NORMAL output, WAVE sine). Set
the 5500A to Operate (OPR).
5. Observe the Input A and B main reading (V-dc) and secondary reading (V-ac) and check
to see if it is within the range shown under the appropriate column.
6. Continue through the test points.