Fluke 123B/S Service Manual - Page 81

Diode Test Function Test, 5.18 Capacitance Measurements Test, 1V DC.

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4 Performance Verification 4.5 Input A and Input B Tests 4.5.17 Diode Test Function Test Proceed as follows to test the Diode Test function : 1. Connect the test tool to the 5500A as for the previous test (see Figure 4-7). 2. Press to open the INPUT A MEASUREMENTS menu, and choose: MEASURE on A: I DIODE 3. Set the 5500A to 1 kΩ. Use the 5500A "COMP 2 wire" mode. 4. Observe the main reading and check to see if it is within 0.425 and 0.575V. 5. Set the 5500A to 1V DC. 6. Observe the main reading and check to see if it is within 0.975 and 1.025V. 7. When you are finished, set the 5500A to Standby. 4.5.18 Capacitance Measurements Test Proceed as follows: 1. Connect the test tool to the 5500A as for the previous test (see Figure 4-7). Ensure that the 5500A is in Standby. 2. Select the following test tool setup: • Press to open the INPUT A MEASUREMENTS menu, and choose: MEASURE on A: I CAP • Press to select auto ranging (AUTO in top of display). • Press to open the INPUT A MEASUREMENTS menu. • Press the select the METER A OPTIONS MENU, and choose: SMOOTHING: I NORMAL | ZERO REF: I ON The ZERO REF function is used to eliminate the capacitance of the test leads. 3. Set the 5500A to the first test point in Table 4-9. Use the 5500A "COMP OFF" mode. 4. Observe the Input A main reading and check to see if it is within the range shown under the appropriate column. 5. Continue through the test points. 6. When you are finished, set the 5500A to Standby. 7. Remove all test leads from the test tool to check the zero point. 8. Press to open the INPUT A MEASUREMENTS menu. 9. Press the select the METER A OPTIONS MENU, and choose: SMOOTHING: I NORMAL | ZERO REF: I OFF 10. Observe the Input A reading and check to see if it is between 00.00 and 00.10 nF. 4-23

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Performance Verification
4.5 Input A and Input B Tests
4
4-23
4.5.17 Diode Test Function Test
Proceed as follows to test the Diode Test function :
1.
Connect the test tool to the 5500A as for the previous test (see Figure 4-7).
2.
Press
to open the INPUT A MEASUREMENTS menu, and choose:
MEASURE on A:
■
DIODE
3.
Set the 5500A to
1 k
Ω
.
Use the 5500A “COMP 2 wire” mode.
4.
Observe the main reading and check to see if it is within 0.425 and 0.575V.
5.
Set the 5500A to
1V DC.
6.
Observe the main reading and check to see if it is within 0.975 and 1.025V.
7.
When you are finished, set the 5500A to Standby.
4.5.18 Capacitance Measurements Test
Proceed as follows:
1.
Connect the test tool to the 5500A as for the previous test (see Figure 4-7).
Ensure that the 5500A is in Standby.
2.
Select the following test tool setup:
•
Press
to open the INPUT A MEASUREMENTS menu, and choose:
MEASURE on A:
■
CAP
•
Press
to select auto ranging (
AUTO
in top of display).
•
Press
to open the INPUT A MEASUREMENTS menu.
•
Press
the select the METER A OPTIONS MENU, and choose:
SMOOTHING:
■
NORMAL | ZERO REF:
■
ON
The ZERO REF function is used to eliminate the capacitance of the test leads.
3.
Set the 5500A to the first test point in Table 4-9.
Use the 5500A “COMP OFF”
mode.
4.
Observe the Input A main reading and check to see if it is within the range shown
under the appropriate column.
5.
Continue through the test points.
6.
When you are finished, set the 5500A to Standby.
7.
Remove all test leads from the test tool to check the zero point.
8.
Press
to open the INPUT A MEASUREMENTS menu.
9.
Press
the select the METER A OPTIONS MENU, and choose:
SMOOTHING:
■
NORMAL | ZERO REF:
■
OFF
10.
Observe the Input A reading and check to see if it is between 00.00 and 00.10 nF.