TB 9-6625-2083-24
does not remain within 1 major division of center vertical graticule line, perform b (5) and
(6) below.
b. Adjustments
(1) Rotate oscilloscope calibrator knob located below EDIT FIELD pushbutton for
an indication of 0.0% on Err display.
(2) Adjust R835 (fig. 4) for 1 marker per division on TI (R).
(3) Rotate oscilloscope calibrator knob located below EDIT FIELD pushbutton for
an indication of 0.0% on Err display.
(4) Adjust R845 (fig. 4) for 1 marker per division on TI (R)
(5) Rotate oscilloscope calibrator knob located below EDIT FIELD pushbutton for
an indication of 0.0% on Err display.
(6) Adjust R855 (fig. 4) to position middle marker to center vertical graticule line (R).
a. Performance Check
(1) Position controls as listed in (a) through (e) below:
DELAY-TIME MULTIPLIER dial to 0.50.
(a)
A AND B TIME/DIV AND DELAY TIME switches to 1 ms.
(b)
HORIZ DISPLAY switch to DELAYED SWEEP (B).
(c)
B SWEEP MODE switch to TRIGGERABLE AFTER DELAY TIME.
(d)
MAG switch to OFF.
(e)
(2) Adjust B TRIGGERING LEVEL controls for a stable display on TI.
(3) Adjust horizontal POSITION controls to align second marker with second
vertical graticule line. Rotate oscilloscope calibrator knob located below EDIT FIELD
pushbutton for 1 marker per division from 2d to 9th vertical graticule lines on TI. If
oscilloscope calibrator Err display readout is not within 1.5%, perform b below.
(4) Set A TIME/DIV switch to 2 ms and B TIME/DIV AND DELAY TIME switch
to 1 ms.
(5) Adjust TI B LEVEL control for stable display. TI will indicate B sweep length
between 10.5 and 11.5 divisions.
(6) Set HORIZ DISPLAY switch to A and A AND B TIME/DIV AND DELAY
TIME switches to 1 ms.
(7) Adjust A LEVEL control for stable display. TI will indicate A sweep length
between 10.5 and 11.5 divisions.
b. Adjustments. Rotate oscilloscope calibrator knob located below EDIT FIELD
pushbutton for an indication of 0.0%. Adjust R741 (fig. 4) to align 10th marker behind 10th
vertical graticule line (R).