Sweep Length and Registration

TB 9-6625-149-50

11. Sweep Length and Registration

a. Performance Check

(1) Turn calibration adapter (A4) TEST FUNCTION switch to HIGH LOAD.

(2) Turn TI TRIGGERING MODE switch to AC and STABILITY control fully

clockwise. If sweep is not approximately 10.5 centimeters long, perform b(1) below.

(3) Connect time-mark generator (A10) to calibration adapter EXT INPUT, using

cable (B5).

(4) Set time-mark generator to .5 mS markers.

(5) Adjust TI STABILITY and TRIGGERING LEVEL controls for a stable

display.

(6) Turn TI HORIZONTAL DISPLAY switch to 5X MAG and position first time

marker behind center graticule line with HORIZONTAL POSITION control.

(7) Turn TI HORIZONTAL DISPLAY to NORM.

If marker does not remain

behind center graticule line, perform b(2) below.

b. Adjustments

(1) Adjust SWP LENGTH R176 (fig. 2) until sweep is approximately 10.5

centimeters long. (R)

(2) Adjust NORM. MAG. REGIS. R358 (fig. 2) until marker is centered behind

center graticule line. (R)

12. Triggering

a. Performance Check

(1) Connect TI CAL OUT to calibration adapter (A4) EXT INPUT, using cable (B5)

and, if necessary, adapter (B2).

(2) Position TI controls as listed in (a) through (c) below:

(a) AMPLITUDE CALIBRATOR switch to 5 VOLTS.

(b) TIME/CM switch to .5 MILLISEC.

(3) Adjust calibration adapter VARIABLE control for 1 minor division of vertical

deflection on TI crt.