TM 11-5840-281-35/1
Control settings
Step No.
Test equipment
Equipment under test
Test procedure
Performance standard
On Control-Indicator C-6988/
Sweep is positioned within 5'
17 ----------------------------------------
As last indicated,
TPN-18 under test, observe
in. bottom gridline of
except:
position of sweep with respect
navigation head.
Master Pulse Generator
to
0-1S33/TPN-18
bottom gridline of navigation
SCAN MODE: NORM
head.
Pulse Generator
0-1 33S/TPN-18
under test
ANGLE VOLTS switch:
AZ
ANGLE VOLTS control:
000
Sweep is positioned within 5'
On Control-Indicator C-6988/
18 ----------------------------------------
As last indicated, except:
in. of center gridline of
TPN-18 under test, observe
Pulse Generator
navigation head.
position of sweep with respect
0-1333/TPN-I 8
to
under test
top gridline of navigation head.
ANGLE VOLTS control:
300
Sweep is positioned within 4'
19 ----------------------------------------
As last indicated,
in. of center gridline of
On Control-Indicator C-6988/
except:
navigation head.
TPN-18 under test, observe
Master Pulse Generator
position of sweep with respect
0-1333/TPN-18
to
SCAN MODE: 60 AZ
top gridline of navigation head.
Pulse Generator
0-15s/ TPN-18
under test
ANGLE VOLTS control:
Ten 1-mi range marks di-
600
played with spacing de-
20 ----------------------------------------
As last indicated,
creasing exponentially
On Control-Indicator C-6988/
except:
with range. Every fifth
TPN-18 under test, observe
Pulse Generator
range mark is intensified.
range marks on sweep.
O-1333TPN-18
a. Five 1-mi range marks
under test
displayed with spacing
RANGE MILES: 10
decreasing exponentially
21 ----------------------------------------
As last indicated,
a.
with range. Fifth range
On Control-Indicator C-6988/
except:
mark is intensified.
TPN-18 under test, observe
Pulse Generator
b. Sweep is still present.
range marks on sweep.
0-1333/TPN-18
under test
RANGE MILES: 5
b.
On trigger delay generator card
in Pulse Generator 0-1333/
c.
TPN-18, momentarily place
None.
TRIG switch S2201 to INT
and observe sweep.
c.
d.
On trigger delay generator
Sweep does not scan.
card,
return TRIG switch S2201 to
EXT.
d.
e.
On master Pulse Generator
Azimuth and elevation
0-1383/TPN-18, place SCAN
sweeps move up and
switch to ON and observe
down as antennas scan.
sweep.
e.
a.
On Pulse Generator 0-1333/
Sweep is scanning but
TPN-18 under test, place
no video is present.
ANGLE VOLTS switch to
OPERATE and observe sweep.
b.
None.
22 ----------------------------------------
As last indicated,
a.
On Control-Indicator C-6988/
except:
TPN-18 under test, observe
Master Control-lndicator
display.
c. Video and noise on
C-6988/TPN-18 and
b.
On master Control-Indicator
eleva-
Pulse Generator
C-6988/TPN-18, rotate IF
tion scan. No video or
0-1333/TPN-18
GAIN-EL control fully cw.
noise on azimuth screen.
TRANSMITTER: Thru
c.
On Control-Indicator C-6988/
WIDE to HV ON
TPN-18 under test, observe
HV ON indicator:
azimuth and elevation displays.
Lighted;
4-44
Previous Page
