TB 9-6625-149-50
(4) Turn TI HORIZONTAL DISPLAY switch to EXT HORIZ ATTEN X10 and
turn CALIBRATOR to 10 VOLTS.
(5) Repeat (2)(e) above. If the indication is not same as in (3) above, perform b(2)
below.
b. Adjustments
(1) Adjust C330 (fig. 2) for optimum square wave. (R)
(2) Adjust C301C (fig. 1) for optimum square wave. (R)
14. Sweep Amplifier
a. Performance Check
using cable (B4).
(2) Position TI controls as listed in (a) through (e) below:
(a) TRIGGER SLOPE switch to +INT.
(b) TRIGGERING MODE switch to AC.
(c) TIME/CM switch to 1 MILLISEC.
(d) HORIZONTAL DISPLAY switch to NORM.
(e) STABILITY control as necessary.
(3) Adjust calibration adapter VARIABLE control for 2 major divisions of vertical
deflection on TI crt.
(5) Adjust HORIZONTAL POSITION control to align second marker behind
second vertical graticule line. If 10th or l9th markers are not within 1.5 minor divisions of
10th vertical graticule line, perform b below.
b. Adjustments. Adjust
SWP. CAL R348 (fig. 1) to align 10th marker 8
centimeters
from second marker. (R)
13