TM 11-6625-2398-15-3
Step
Test equipment
Equipment under
Test
Performance
No.
control setting
test control settings
procedure
standard
SG-40/G
OUTPUT LEVEL:
As directed in step 2.
5
Controls as at end of
ATTENUATOR:
a. Terminate and connect the
step 1.
0 (zero)
hybrid attenuator as directed in D of
IM-92/U
As directed in step 2.
b. Repeat b through g of step 2.
Standing wave ratio
AN/UPM-108A
indicator must indicate
VERNIER GAIN and
less than 1.5 on
RANGE:
the SWR scale.
As directed in step 2.
SG-340/G
OUTPUT LEVEL:
As directed in step 2.
6
Controls as at end of
ATTENUATOR:
a. Terminate and connect the
step 1.
0 (zero)
hybrid connector as directed in E of
IM-92/U
As directed in step 2.
b. Repeat b through g of step 2.
Standing wave ratio
AN/UPM-108A
indicator must indicate
VERNIER GAIN and
less than 1.6 on
RANGE:
the SWR scale.
As directed in step 2.
SG-340/G
OUTPUT LEVEL:
As directed in step 2.
(5) Adapter UG-915/U.
8-10. Insertion loss measurements for Cables
W14/W15 and W39
(6) Adapter CP7/CP8(2).
a. Test Equipment and Materials.
(7) Attenuators AT1/AT2(2).
(1) Signal Generator SG-340/G.
(8) Cable W14/W15(1).
(2) Crystal Detector HP-423A.
b. Test Connections and Conditions. Connect the
(3) Standing Wave Ratio Indicator AN/UPM-
test equipment as shown with solid lines in figure 8-7.
108A.
Additional instructions for connecting the cable under test
and preparation of cable W39 are provided in the
(4) Adapter UG-606/U.
procedure below.
Step
Test equipment
Equipment under
Test
Performance
No.
control setting
test control settings
procedure
standard
1
a. SG-340/G
None
a. Set the MEGACYCLES dial to
POWER: ON
1030 with the frequency control
Function switch:
knob. Turn on the signal generator
1000 ∼
and allow a minimum of 20 minutes
MEGACYCLES:
warm-up period before proceeding.
1030
Adjust the MOD LEVEL control for
MOD UP-NORMAL-
a reading of 50 on the PERCENT
DOWN:
MODULATION meter.
NORMAL
Attenuator: 0dB
(outer scale)
PERCENT MODU-
LATION: 50
b. AN/UPM-108A
b. Turn on the standing wave ratio
POWER: ON
indicator and allow a minimum of
METER SCALE:
10 minutes warm-up period before
EXPAND
proceeding.
8-22
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