CommScope Node AM4, Руководство пользователя

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4. Functional Description
MF0121ACP _uc.docx Manual for Node AM4 Page 49
The modem output is connected to the modem coupler port on the rear side of the
multiband combiner, or – in case an external modem antenna or directional coupler is
used – to the modem RF port; see following exemplary illustration:
figure 4-19 Cable from the modem to the multiband combiner, exemplary
Connect the wires, cables and connectors of the HC25 / PHS8 / PLS8 modem kit
according to the following wiring illustration (both types are identical except the fact that
the RS232 connector must not be used with the PHS8/PLS8 types):
figure 4-20 Modem Kit HC25 / PHS8 / PLS8 Node AM, schematic wiring
G3266M381
M3.0x 35mm hexagon
socket-head-cap screw
UMTS Modem
Siemens HC25T
not used
Cable RF RG-316 0.3m
FME female straight
to combiner
Cable AC/DC
AWG26 240 mm
6-wires
to UI2 Board
to UI2 Board
Cable AC/DC USB
0.27m USB Typ A
All unmarked screw joints:
nominal-tightening torque values
according to QA 7.5.1.090/F1011P0
Part(s) to be clean and free of all chips,
burrs, sharp edges and foreign material
to UI2 Board
Multiband
combiner
RF cable
RF coupling port
10 dB at combiner
RF input of
HC25 / PHS8 /
PLS8 modem
Modem RF port
DC supply connector
for GPS LNA option
exemplary