TM-11-5840-281-35/1
Control settings
Step No.
Test equipment
Equipment under test
Test procedure
Performance standard
a.
a.
On Control-Indicator C-6988/
None.
12 ----------------------------------------
As last indicated,
TPN-18, adjust INTENSITY
except:
and FOCUS controls for normal
Pulse Generator
operating level and definition.
O-1333/TPN-18
b.
b.
Rotate navigation head on front
None.
under test
of crt to position arrow at 270
deg.
RANGE MILES: 5
c.
c.
ANGLE VOLTS switch:
Observe position of sweep with
Sweep starts 1/2 in. from
EL
respect to navigation head cen-
left edge of crt, and is
ANGLE VOLTS control:
ter gridline and sweep starting
1/8
000
point.
in. above and parallel to
center gridline.
a.
If touchdown range mark is not
a.
13 ----------------------------------------
As last indicated ----
at start of sweep on Control-
Touchdown range is at
Indicator C-6988/TPN-18
start of sweep.
under test, loosen 2 thumb-
screws and pull out Pulse
Generator 0-1333/TPN-18. On
top deck, adjust PREC DELAY
1 control R1120 or PREC
DELAY 2 control R1119 (as
determined by position of
CURSOR SELECT switch) to
position touchdown range mark
at start of sweep.
b.
Observe 5-mi range mark -----
b.
5-mi range mark 1/2 inch
from right edge of crt.
a.
On Control-Indicator C--6988/
14 ----------------------------------------
As last indicated,
a.
TPN-18 under test, observe
20-mi range mark is 1/2
except:
20-mi range mark.
inch from right edge of
Pulse Generator
b.
crt.
On Control-Indicator C-6988/
0-1333/TPN-18
b.
TPN-18 under test, rotate
None.
under test
navigational head on front of
RANGE MILES: 20
crt to position arrow at 0 (top).
c.
Rotate ANGLE VOLTS control
c.
back and forth to cause vertical
Vertical deflection of
deflection of sweep. Observe
sweep is parallel to grid-
vertical deflection.
lines of navigation head
and does not deviate
from
a straight line by more
than 3/16 inch.
a.
On Control-Indicator C-6988/
TPN-18 under test, rotate
15 ----------------------------------------
As last indicated,
a.
navigation head on front of crt
None.
except:
to position arrow at 270.
Pulse Generaotr
b.
Observe position of sweep with
0-1333 /TPN-18
respect to top gridline of navi-
under test
b.
gation head.
Sweep is positioned
ANGLE VOLTS control:
within 5/16 inch of top
220
gridline.
On Control-Indicator C-6988/
TPN-18 under test, observe
position of sweep with respect
Sweep is positioned within
16 ----------------------------------------
As last indicated,
to top gridline of navigation
5/16 inch of top gridline.
except:
head.
Master Pulse Generator
0-1333/TPN-18
SCAN MODE: 35 EL
Pulse Generator
O-I333/TPN-18
under test
ANGLE VOLTS control:
700
4-43
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