Input A And B High Voltage Ac/Dc Accuracy Test - Fluke 123 Service Manual

Fluke 123/124/125
Service Manual
1. Connect the test tool to the 5500A as for the previous test (see Figure 3-5).
2. Press
3. Operate the
4. Press
5. Press
6. Set the 5500A to source a square wave 2.5 Vpp, 60 Hz (NORMAL output, WAVE
7. Check if the bargraphs of AMP HARMONICS look like the the ones in Figure 3-6.
8. Press
9. Check if the bargraphs of VOLT HARMONICS look like the the ones in Figure 3-7.
10. When you are finished, set the 5500A to Standby.
Figure 3-6. Bargraph Harmonics Ampere

3.5.15 Input A and B High Voltage AC/DC Accuracy Test

Dangerous voltages will be present on the calibration source and
connecting cables during the following steps. Ensure that the
calibrator is in standby mode before making any connection
between the calibrator and the test tool.
Proceed as follows to test the Input A&B High Voltage AC and DC Accuracy:
1. Connect the test tool to the 5500A as shown in Figure 3-8.
3-22
to open MENU.
keys to highlight HARMONICS.
to open the B AMPERE PROBE menu, and choose:
SENSITIVITY: 10 mV/A
to open the HARMONICS AMP menu.
square). Set the 5500A to Operate (OPR).
to two times to activate HARMONICS VOLT menu.
Figure 3-7. Bargraph Harmonics Volt
Warning