TB 9-4931-504-40
a. Performance Check
(1) Position TI controls as listed in (a) through (e) below:
(a)
CH1, INT CH1, SWP, +SLOPE, and REP pushbuttons pressed.
(b)
CH1, VOLTS/DIV switch to 0.5 V.
DELAYING SWEEP and DELAYED SWEEP SEC/DIV switches to 1 S.
(c)
(d)
Adjust DELAY ZERO fully ccw and DELAY TIME MULT dial to 10.00.
(e)
Press and release HF SYNC.
(2) Connect oscilloscope calibrator SOURCE/MEASURE CHAN 1 to CH1 INPUT.
(3) Set oscilloscope calibrator to 1 S marker output.
(4) Adjust TRIGGERING LEVEL control for stable display.
(5) Adjust HORIZ POS control to align 2d marker with 2d vertical graticule line.
(6) Adjust SWP CAL control to align 10th marker with 10th vertical graticule line.
Readjust HORIZ POSITION control as necessary to keep 2d marker aimed with 2d vertical
graticule line. If one marker per division is not displayed within 0.1division over center 8
divisions, perform b (l) below.
NOTE
It may be necessary to reduce oscilloscope intensity before
performing (7) below.
(7) Adjust HORIZ POS to align first dot on first graticule line. If 2d dot is not
aligned on 11th graticule line, perform b (2) below.
(8) Release SWP pushbutton and set DELAY TIME MULT fully ccw. Adjust
DELAY ZERO to align a marker on 2d vertical graticule line. If 10th marker is not aligned
with 10th vertical graticule line, perform b (3) below.
b. Adjustments
(1) Adjust R132 (fig. 1) to align one marker per each vertical graticule line (R).
(2) Adjust R130 and R131 (fig. 1) until first dot is aligned on first graticule and 2d
dot is aligned on 11th graticule (R).
NOTE
readjusted for best compromise.
(3) Adjust R460 (fig. 1) to align 1 marker per each vertical graticule line (R).
a. Performance Check
(1) Connect oscilloscope calibrator SOURCE/MEASURE CHAN 1 to CH1 INPUT.
(2) Set oscilloscope calibrator to 10 mS markers output.