TB 9-6625-1176-24
(7) Press AMPLITUDE 3 -10 pushbutton and set AMPLITUDE VERNIER dial
fully cw. If oscilloscope does not display a pulse amplitude greater than 10 V, readjust R462
(8) Position controls as listed in (a) through (j) below:
PERIOD l -10 pushbutton pressed.
(a)
PERIOD VERNIER dial to 10.
(b)
PULSE POSITION l0n-.1 pushbutton pressed.
(c)
PULSE POSITION VERNIER dial to 1.
(d)
WIDTH VERNIER dial to 2.5.
(e)
AMPLITUDE 10-30 pushbutton pressed.
(f)
(1) DUTY CYCLE pushbutton pressed.
(2) WIDTH 25N-.l pushbutton pressed.
(g) AMPLITUDE VERNIER dial to 3 (30V).
(h) POLARITY switch to POS.
(i) DUTY CYCLE pushbutton released (out).
(j) WIDTH 25n-.1 pushbutton pressed.
(9) Adjust R480 (fig. 2) for a 25 ns pulse width indication on oscilloscope (R).
(10) Position controls as listed in (a) through (e) below:
WIDTH .l -l pushbutton pressed.
(a)
WIDTH VERNIER dial to 2.
(b)
INT LOAD pushbutton pressed.
(c)
AMPLITUDE 30 - 100 pushbutton pressed.
(d)
AMPLITUDE VERNIER dial to 10 (50V).
(e)
(11) Adjust R436 and R408 (fig. 2) for fastest risetime display indication on
oscilloscope (R).
(12) Adjust R419 (fig. 2) for minimum overshoot on oscilloscope display (R).
(13) Observe oscilloscope risetime, overshoot, and ringing. If risetime is not less than
15 ns, and overshoot and ringing less than 5 percent, readjust R419, R436, and R408 (fig. 2).
(14) Press AMPLITUDE 10 - 30 pushbutton and set AMPLITUDE VERNIER dial to 3.
(15) Adjust C501 (fig. 5) for an overshoot equal to pulse ringing (R).
optimum overshoot and ringing (R).
(17) Observe oscilloscope risetime, overshoot, and ringing. If risetime is not less than
15 ns, and overshoot and ringing less than 5 percent, readjust C501, C504 (fig. 5), R421,
and R487 (fig. 2) for optimum pulse.
(18) Release INT LOAD pushbutton and repeat technique of (17) above.
(19) Press AMPLITUDE 30-100 pushbutton and set AMPLITUDE VERNIER dial
to 10 (100V). Repeat technique of (17) above.
(20) Press INT LOAD pushbutton and repeat technique of (17) above.
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