TM 11-6625-2398-15-3
Step
Test equipment
Equipment under
Test
Performance
No.
control setting
test control settings
procedure
standard
5
SG-340/G
Repeat step 2 for the second W14/
Cable insertion loss
MEGACYCLES:
W15 cable.
must not exceed
1030
2.5dB.
6
Controls as at end of
a. Refer to schematic diagram of
step 1.
cable W39 (figure 6-12). Remove
SG-340/G
and retain couplers CP1 and CP2.
MEGACYCLES:
Remove the retaining clips on one
As directed by
end of the cable by loosening six
procedure
screws on the shell (four centered
on the mating side and two centered
on the back of the shell), slip out
the two clips. Bend the cable into a
circle and insert the male connector
P1 into the female connector P2.
Connect plugs P3 and P4 as the
cable to be tested (fig. 8-7).
b. Repeat steps 2 and 3 (sleeve
b. Insertion loss of
marking P1/A-P2/A),
cable at both fre-
quencies must not
exceed 2.0dB.
c. Repeat steps 2 and 3, using plugs
c. Insertion loss of'
P5 and P6 of cable W39 (sleeve
cable at both fre-
markings P1/B-P2/B) as the cable
quencies must not
to be tested.
exceed 2.0dB.
d. Remove cable W39 from the test
set-up, disconnect P1 from P2, re-
place the two retaining clips and
tighten the six loosened screws. Re-
place couplers CPI) and CP2 be-
tween plugs P3/P4 and P5/P6 re-
spectively.
8-11. Test Data Summary
Control
1030MHz
1090 MHz
0.0
0 +3.0, -0.0dB
0 +1.0, -0.0dB
extender boards and the front panel test adapter must be
3.0
3 +:3.0, -2.0dB
3 1.0dB
as indicated in paragraph 8-4.
6.0
6 + 3.0, -2.0dB
6 1.0dB
9.0
9 + 3.0, -2.0dB
9 1.0dB
12
12 + 3.0, -2.0dB
12 1.1dB
on cables must indicate a minimum of 100 megohms.
15
15 + 3.0, -2.0dB
15 1.1dB
c.
Insertion Losses:
20
20 + 3.0, -2.0dB
20 1.1dB
25
25 + 3.0, -2.0dB
25 1.2dB
Hybrid Attenuator RF IN/OUT to RF SUM-6.5
e. VSWR of Hybrid Attenuator Connectors.
1.5dB.
RF IN/OUT
- less than 1.65:1
Hybrid Attenuator ATTEN IN/RF DIFF to RF
IN/OUT-6.5 1.5dB with the hybrid attenuator
RF SUM
- less than 1.2:1
set for minimum attenuation.
CPLR IN
- less than 1.5:1
Cables W14/W15-2.5dB maximum.
ATTEN OUT
- less than 1.5:1
Two RF leads of cable W39-2.0dB maximum.
f. VSWR of Hybrid Attenuator. Overall VSWR of
the hybrid attenuator must be less than 1.6:1.
8-24
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