TM 11-5840-208-30-1
d. Intensity Balance.
(1)
Note the intensity of the raster on the CRT, and then change the RANGE SELECTOR switch to the 3750 M
position.
(2)
Adjust the INTENSITY BALANCE potentiometer R112 until the sweep intensity in the 3750 M position is the
same as that in the 15000 M position.
Note: This does not refer to the intensified band displayed in the 15000 M position, but to the rest
of the CRT display.
e. Azimuth Sweep Generator.
(1)
Adjust the HOR CENTERING potentiometer R4517 until the raster is horizontally centered.
(2)
Adjust the HOR SIZE potentiometer R4536 until the raster just covers the CRT (horizontally).
(3)
Repeat the steps in (1) and (2) above as necessary to meet both conditions.
f. Sweep Intensity.
(1)
Set the RANGE SELECTOR switch to the 15000 M position.
(2)
Set the EXPANDED SWEEP DELAY switch to position 7. 5.
(3)
Adjust the SWP INTEN ADJ potentiometer R4657 until there is an intensified horizontal band slightly
brighter than the rest of the display on the CRT
g. Video Clipping.
(1)
Turn the range markers on, and adjust the range marker intensity potentiometer R1333 on the AFC chassis
for maximum marker intensity.
(2)
Observing the B-scope presentation, adjust the VIDEO CLIPPING potentiometer R4612 for maximum
marker intensity without "blooming. "
(3)
Readjust potentiometer R1333 for desired range marker intensity.
h. Range Calibration.
(1)
Perform range calibration as indicated on page 13, paragraph 2-4.
(2)
If correct results cannot be obtained with RANGE SLOPE potentiometer R119, return it to midposition and
adjust C232 until the seventh range marker coincides with the strobe set at 14, 000 meters.
Note: Capacitor CZ32, located on the timing sweep generator chassis Z102, is the coarse range
slope adjustment.
(3)
Continue with range calibration procedure on page 13, paragraph 2-4.
i. Range Shift Adjustment.
(1) Turn range markers on.
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