Fluke 19xB-19xC-2x5C
Service Manual
4-20
4.6.11 Input B Trigger Sensitivity Test
Proceed as follows to test the Input B trigger sensitivity:
1. Connect the test tool to the 5500A as shown in Figure 4-7.
al55scb.bmp
Figure 4-7. 5500A Scope Output to Test Tool Input B
2. Select the following test tool setup:
• Reset the test tool
• Press
and use to turn Input B on.
• Press
and use to turn Input A off.
• Using
move the Input B trace zero to the center grid line.
• Press
and use to select Input B as trigger source.
• Using
and change the sensitivity range to select manual sensitivity
ranging, and lock the Input B sensitivity range on 2 V/div.
3. Using
select the time base indicated under the first column of Table 4-10.
4. Set the 5500A to source the leveled sine wave given in the first row of Table 4-10.
5. Adjust the 5500A output voltage until the displayed trace has the amplitude indicated
under the appropriate column of Table 4-10.
6. Verify that the signal is well triggered.
If it is not, press
, then using enable the up/down arrow keys for manual
Trigger Level adjustment. Adjust the trigger level and verify that the signal will be
triggered now. The trigger level is indicated by the trigger icon (
).
7. Continue through the test points.
8. When you are finished, set the 5500A to Standby.
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