TM 11-5840-281-35/1
Control settings
Step No.
Test equipment
Equipment under test
Test procedure
Performance standard
a.
a.
2
As last indicated, except: As last indicated--------------------
Connect calibrated rf cable
None.
Radar test set
(part of radar test set)
Rf power switch:
between RF POWER con-
POWER SET
nector on radar test set and
OUTPUT ATTEN.:
azimuth directional coupler
Fully ccw
MP8521 on side of Radar
(-100 dbm)
Receiver-Transmitter RT-
ADD TO PWR.
818/TPN-18.
METER: 25
b.
b.
On radar test set, adjust
None.
ZERO SET controls to position
needle of power meter at
ZERO SET mark.
c.
c.
Place rf power switch to
None.
POWER IN.
d.
d.
Rotate ADD TO PWR.
None.
METER control ccw until
there is an indication on
power meter. Continue rotat-
ing ADD TO PWR. METER
control cow, stopping at first
multiple of 5 calibrated mark
on ADD TO PWR. METER
control dial.
e.
e.
Record ADD TO PWR.
Dbm setting on ADD
METER control dial dbm
TO PWR. METER
setting.
control dial.
I.
f.
Record power meter dbm in-
Dbm indication on
dication. (Indication may be
power meter.
negative or positive.)
g.
If dbm indication in f above
g.
Sum or difference of
dbm
is positive, add it to dbm
setting and indication.
setting recorded in e above.
(e and f above).
If dbm indication in f above is
negative, subtract it from
setting recorded in e above.
Record results.
h.
h.
Add dbm marked on azimuth
50 dbm min.
directional coupler to sum or
difference of dbm setting and
indication recorded in g
above.
i.
i.
On master Control-Indicator
HV ON indicator lighted.
C-6988/TPN-18, place
TRANSMITTER switch thru
NARROW to HV ON.
j.
j.
On radar test set, rotate ADD
Power meter needle is
TO PWR. METER control
on scale.
ccw to next calibrated mark
on ADD TO PWR. METER
control dial.
k.
k.
If needle on power meter is not
Power meter needle is
on
on scale, rotate ADD TO
seale.
PWR. METER control ccw
to next calibrated mark on
ADD TO PWR. METER
control dial.
l.
l.
Record ADD TO PWR.
Dbm setting on ADD
METER control dial dbm
TO PWR. METER
setting.
control dial.
m.
m. Dbm indication on
Record power meter dbm
indication
power meter.
4-26
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