TB 9-4931-504-40
d. When indications specified in paragraphs 8 through 22 are not within tolerance,
perform the power supply check prior to making adjustments. After adjustments are made,
repeat paragraphs 8 through 22. Do not perform power supply check if all other
parameters are within tolerance.
e. Unless otherwise specified, all controls are control settings refer to the TI.
WARNING
HIGH VOLTAGE is used or exposed during the performance of
DEATH ON CONTACT may result if
personnel fail to observe the safety precautions. REDUCE
OUTPUT(s) to minimum after each step within the
performance check where applicable.
a. Remove TI side panels and connect to oscilloscope center and right hand
compartments, using two extenders.
b. Position controls as listed in (1) through (8) below:
(1) CH1, INT CH1, REP pushbuttons pressed and all others released.
(2) DC OFFSET controls midrange.
(3) SCAN control fully cw.
(4) TRIGGERING HOLDOFF control fully ccw.
(5) DELAYING SWEEP and DELAYED SWEEP SEC/DIV switches to 5 s and
DELAYED SWP VAR control fully ccw.
(6) DELAY ZERO and DELAY TIME MULT controls ccw.
(7) CH1 and CH2 VOLTS/DIV switches to .2V.
(8) Both VOLTS/DIV CAL controls fully ccw (to detent).
c. Energize and allow 30 minutes for warm-up.
a. Performance Check
(1) Connect calibrator to TI CH1 INPUT.
(2) Adjust calibrator output frequency for 50 kHz and amplitude for 0.3535 V rms.
(3) Adjust TRIGGERING LEVEL control for stable display. If oscilloscope does
not display 5 divisions of vertical deflection, adjust CH1 GAIN control for 5 divisions of deflection.
(4) Adjust calibrator for 5 divisions of vertical deflection for settings and indications
listed in table 3. Calibrator will indicate within limits specified.