Input B Trigger Sensitivity Test - Fluke ScopeMeter 190 II Series Service Manual

Fluke 190-062, -102, -104, -202, -204, -502, -504
Service Manual

Input B Trigger Sensitivity Test

Proceed as follows to test the Input B trigger sensitivity:
1. Connect the Test Tool to the 5502A as shown in Figure 4-8.
PM9091
50 OHM e.g. PM9585 or
TRM50
For 190-502 and -504
use only TRM50!
A METER
2 CHANN. + METER
2. Reset the Test Tool to select the Test Tool setup:
3. Press
4. Press
5. Use
sensitivity ranging, and lock the Input B sensitivity range on 2 V/div.
6. Use
7. Set the 5502A to source the leveled sine wave given in the first row of
Table 4-10.
8. Adjust the 5502A output voltage until the displayed trace has the amplitude
indicated under the appropriate column of Table 4-11.
9. Verify that the signal is well triggered.
If not, press
Level adjustment. Adjust the trigger level and verify that the signal will be
triggered now. The trigger icon ( ) indicates the trigger level.
10. Continue through the test points.
11. When you are finished, set the 5502A to Standby.
4-24
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50 OHM e.g. PM9585 or
TRM50
USE 50 OHM
TERMINATION
B A B C D
4 CHANNELS
Figure 4-8. 5502A Scope Output to Test Tool Input B
B
to turn Input B on.
F1
TRIGGER and use
mV RANGE
and to change the sensitivity range to select manual
V
RANGE
s TIME ns
to select the time base listed in Table 4-11.
TRIGGER
and use
PM9091
NORMAL SCOPE
FLUKE 5502A CALIBRATOR
to select Input B as trigger source.
F3
to enable
perf-ver-e2.eps
for manual Trigger