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).
13. Sweep Calibration
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).