TM 11-5840-281-35/1
Control settings
Step No.
Test equipment
Equipment under test
Test procedure
Performance standard
i.
i.
On master Control-Indicator
Vertical crosshair is
C-6988/TPN-18, place AN-
aligned with object
sighted in c and e above.
TENNA switch to L or R as
required to align vertical cross-
hair of sighting scope with
object sighted in c and e above.
j.
j.
On elevation Antenna AS-1291/
Elevation servo pro-
TPN-8 yoke, observe indication
tractor indicates 0 deg.
on elevation servo protractor.
3
---------------------------
As last indicated----
a.
a.
On master Control-Indicator
Extend limit switch
C-6988/TPN-8, place AN-
stops elevation antenna
TENNA switch to L and hold
actuator before it reaches
in L until elevation antenna
mechanical limits.
actuator stops.
b.
b.
Observe indication on elevation
Elevation servo pro-
servo protractor.
tractor indicates 15 deg.
c.
c.
On master Control-Indicator
Retract limit switch
C-6988/TPN-18, place AN-
stops elevation antenna
TENNA switch to R and hold
actuator before it reaches
in R until elevation antenna
mechanical limits.
actuator stops.
d.
Observe indication on elevation
d.
Elevation servo pro-
servo protractor.
tractor indicates 15 deg.
4
---------------------------
As last indicated ---
a.
Position azimuth Antenna
a.
Azimuth scan protractor
AS-1292/TPN-8 by hand to 0-
remains at 0 deg with no
degree as indicated on azimuth
measurable creep for
scan protractor. Observe
10-ec period.
azimuth scan protractor for
10-sec period.
b.
Observe 10-35 deg actuator----
b.
Red connecting rod is at
bottom of 1045 deg
actuator slide.
c.
Remove clinometer and sighting
c.
None.
scope from elevation Antenna
AS-1291/TPN-8.
5
---------------------------
As last indicated, except:
a.
Observe azimuth Antenna AS-
a.
Azimuth Antenna AS-
Master Control-Indicator
1292/TPN-8.
1292/TPN-8 scans sector
C-6988/ TPN-18
approximately 20 deg
SCAN: ON
either side of 0-deg indi-
cation on azimuth scan
protractor.
b.
Observe elevation Antenna AS-
b.
Elevation Antenna AS-
1291/TPN-8.
1291/TPN-8 scans ap-
proximately at 30 cpm.
c.
On both Control-Indicators C-
c.
None.
6988/TPN-18, adjust INTEN-
SITY and FOCUS controls for
normal display.
d.
Observe precision display on
d.
Normal beta sweeps on
both Control-Indicators C-
both Control-Indicators
6988/TPN-18.
C-6988/TPN-18 with no
flashing.
a.
Observe azimuth Antenna AS-
a.
Azimuth Antenna AS-
1292/TPN-8.
1292/TPN-8 scans same
sector as in 5a above.
6
---------------------------
As last indicated, except:asterbPulsObsenveator35 deg actuator ---
e Ger er 10-
.
b.
Red connecting rod is at
Master Pulse Generator
top of 10-35 deg actuator
O-1333/TPN-18
slide.
SCAN MODE: 35 EL
4-29
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