TB 9-6625-127-24
bp. Set frequency counter to TIME A to B, COM A, A
,B
, TRIGGER LEVEL to 0 V
and 50 Ω impedance.
bq. Set TI width to 100 s and adjust A2R32 (fig. 2) for a frequency counter indication of
102 s 1 s. (R)
br. Set TI width to 999 s and adjust A1R304 (fig. 1) for a frequency counter indication of
1020 s 10 s. (R)
bs. Repeat steps bq and br until both specifications are achieved.
bt. Set TI width to 400 s. If frequency counter indication is not > 386 s, repeat steps bo
through bs.
bu. Set TI width to 99.9 ns and FRQ to 100 kHz. Adjust A2R31 (fig. 2) for a frequency
counter indication of 100 ns 1 ns.
bv. Set TI width to 8 ns and FRQ to 10 MHz.
bw. Connect TI OUTPUT to oscilloscope 1 input and connect TI TRIG OUTPUT to
oscilloscope 2 input.
bx. Configure oscilloscope to display a single pulse.
by. Measure pulse width at 50% of amplitude. Pulse width should be between 6.7 ns and
9.5 ns.
bz. Set TI as outlined in (1) through (9) below:
(1) TRIG MODE to NORM.
(2) CTRL to PWM.
(3) Waveform to pulse.
(4) COMPL OUTPUT to off.
(5) DISABLE OUTPUT to off.
(6) FRQ to 1 kHz.
(7) WID to 550 s.
(8) AMP to 1 V.
(9) OFS to 0 V.
ca. Connect TI OUTPUT to frequency counter A input. Measured pulse width must be 550
s 30 s.
cb. Turn A1R413 (fig. 1) fully clockwise.
cc. Set TI as outlined in (1) through (8) below:
TRIG MODE to NORM.
(1)
CTRL to off.
(2)
(3)
Waveform to square.
COMPL OUTPUT to off.
(4)
DISABLE OUTPUT to off.
(5)
FRQ to 1.00 kHz.
(6)
AMP to 9.99 V.
(7)
OFS to 0 V.
(8)
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