TB 9-6625-2211-24
11. Trigger Accuracy
a. Performance Check
(1) Position controls as listed in 7 d above.
(2) Connect equipment as shown in figure 2, connection A.
Figure 2. Trigger accuracy - equipment setup.
(3) Adjust pulse generator controls for a (+) positive output pulse 5 V in amplitude
and 5.0 Ps in width, as indicated on Channel 2 of oscilloscope.
(4) Set TRIG SEL INT/DCD/EXT switch to EXT. Adjust pulse generator period
controls for a frequency counter indication of 2000.0 Hz.
(5) Adjust oscilloscope position controls to center pulse on Channel 1 of oscilloscope.
(6) Using standard measurement techniques measure the pulse amplitude, width,
rise time, and fall time. The results will be 10 1 V, 3 1 Ps, <0.1 Ps, and <0.2 Ps
respectively.
(7) Measure the delay time between the leading edges of the pulses on Channel 1
and Channel 2 of oscilloscope. The delay time will be <0.3 Ps.
(8) Adjust pulse generator controls for an output pulse width of 0.25 Ps. Repeat (5)
through (7) above.
CHANGE 1 13