Fluke 43B - Input 1 Trigger Sensitivity Test

43B
Service Manual
4-6
4.5.1 Input 1 Trigger Sensitivity Test
Proceed as follows to test the Input 1 trigger sensitivity:
1. Connect the test tool to the 5500A as shown in Figure 4-2.
ST8004.WMF
Figure 4-2. Test Tool Input 1 to 5500A Scope Output 50Ω
ΩΩ
Ω
2. Select the AUTO test tool setup:
• Press
to select the MENU.
• Press
till SCOPE is highlighted.
• Press
to select SCOPE mode.
3. Select timebase of 100 ns/d.
• Press
to select RANGE.
• Press
to select 100 ns/d.
4. Select sensitivity of 200 mV/d.
• Press
to select 200 mV/d.
5. Set the 5500A to source a 5 MHz leveled sine wave of 100 mV peak-to-peak
(SCOPE output, MODE levsine).
6. Verify that the signal is well triggered , if necessary adjust the trigger level (see 7).
7. Adjusting trigger level.
• Press
to highlight TRIGGER, then press to adjust the trigger level.
8. Set the 5500A to source a 25 MHz leveled sine wave of 400 mV peak-to-peak.
9. Select timebase of 20 ns/d.
• Press
to select RANGE.
• Press
to select 20 ns/d.
10. Verify that the signal is well triggered , if necessary adjust the trigger level (see 7).
11. Set the 5500A to source a 40 MHz leveled sine wave of 1.8V peak-to-peak.
12. Verify that the signal is well triggered, if necessary adjust the trigger level (see 7).
13. When you are finished, set the 5500A to Standby.