TB 9-6625-2251-24
l. Rotate CH 1 VOLTS/DIV knob for 200 mV indications on crt. Rotate TRIGGER
LEVEL knob and verify TI will trigger.
Table 11. Internal Trigger Sensitivity
Oscilloscope calibrator
LEVEL SINE
LEVEL SINE
amplitude
200 mV
50 KHz
200 mV
80 KHz
200 mV
50 MHz
300 mV
150 MHz
m. Select TRIGGER SOUCE and set EXT then set SOURCE 1 2 to 1.
Connect
unconnected end of BNC input coupler to EXT TRIG 1.
n. Set oscilloscope calibrator LEVEL SINE output for amplitude and frequency listed
indication on crt as listed in the first row of table 12. Rotate TRIGGER LEVEL knob and
verify TI will trigger.
o. Repeat technique of n above substituting frequencies, amplitude, and TI setting in
the remaining rows of table 12.
Table 12. External Trigger 1 Sensitivity
Oscilloscope calibrator LEVEL SINE
Test instrument
SEC/DIV
settings
Frequency
Amplitude
5 s
50
kHz
50
mV
5 s
80
kHz
50
mV
50
MHz
50
mV
5 ns
150
MHz
150
mV
5 ns
p. Move BNC dual input coupler connection from EXT TRIG 1 to EXT TRIG 2 and
perform (1) through (3) below.
(1) Select TRIGGER SOURCE.
(2) Set EXT
(3) Set SOURCE 1 2 to 2.
q. Repeat technique of n above using values in table 13.
r. Set oscilloscope calibrator to standby and disconnect equipment setup.
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