TM 11-5840-281-35/1
Control settings
Step No.
Test equipment
Equipment under test
Test procedure
Performance standard
'
Normal 35 elevation
b.
Observe beta scan for normal
b.
Master Control-Indicator
elevation presentation.
beta scan with range
C-988/TPN-18
marks and height finder
TRANSMITTER: OFF.
cursor at normal operat-
POWER :ON
ing intensity level.
c.
Pulse Generator
On master Control-Indicator
C-6988/TPN-18, place
O-I333/TPN-18
ANTENNA (servo) switch to
SCAN MODE: 35 EL
R until blanked sector on ele-
SCAN: ON
vation range marks is poid-
Pulse Generator
tioned at extreme top of
O-1333/TPN-18
azimuth display.
under test
RANGE MILES: 5
ANGLE VOLTS switch:
OPERATE
EL CURSOR: HF
a.
Pulse Generator 0-1888/
a.
None.
TPN-18 under test, rotate
2------------------------------------------
As last indicated except:
ALTITUDE control fully ccw.
Master Pulse Generator
b.
Observe indication on ALTI-
0-1333/TPN-18
b.
None.
TUDE indicator. If indicated
SCAN switch: OFF
altitude is not 0000, disengage
ALTITUDE indicator by de-
pressing screwdriver adjust
at right of ALTITUDE
3------------------------------------------
As last indicated -----
indicator through hole in
front panel and rotate screw-
driver adjust cw. Release
screwdriver adjust.
c.
Rotate ALTITUDE control
c.
0000.
fully ccw and observe indi-
cation on ALTITUDE
indicator.
d.
Repeat a, b, and c above
d.
0000.
until 0000 is indicated on
ALTITUDE indicator when
ALTITUDE control is fully
ccw.
a.
Manually position elevation
a.
None.
Antenna AS-1291/TPN-8
to a scan angle of 1.41 degem.
b.
On Pulse Generator 0-1888/
b.
Dot on artificial sweep
TPN-18, alternately switch
representing height
ANGLE VOLTS switch
finder
between EL and OPERATE
cursor intersects 2-mile
while adjusting ART ANGLE
range mark.
V control until artificial sweep
coincides with elevation sweep.
Record indication of ART
ANGLE V control.
c.
On Pulse Generator 0-1US/
TPN-18 set RANGE MILES
c.
None.
switch to 20. Manually posi-
tion elevation Antenna AS-
1291/TPN-18 to a sc angle
of 2.86 degrees.
d.
On Pulse Generator 0-1888/
TPN-18, alternately switch
d.
Dot on artificial sweep
ANGLE VOLTS switch be-
representing height
tween EL and OPERATE
finder
while adjusting ART ANGLE
cursor intersect. 4-mile
V control until artificial sweep
range mark.
4-46
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