Arris NC4000 - RF Cabling-Lid Motherboard to RF Amplifier Tray

3-12
NC4000 1 GHz Node
TM 87-10923 Rev E
3.6 RF Cabling—Lid Motherboard to RF Amplifier Tray
RF connections between the RF amplifier tray and the lid motherboard are made through short
coax cables. The number of coax cables depends on the number of forward and return segments,
and on the RF amplifier tray type. Connect the coax cables per Table 3.4 for OA4324HG RF
amplifiers.
Table 3.4 RF Cabling—Lid Motherboard to OA4324HG RF Amplifier
Note If this node is configured for forward RF path switching, connect forward
cables to the RF jack on the applicable FS4x21 instead of FWD B / FWD C on the lid
motherboard.
Segmentation Options
Lid
Motherboard
Dir.
RF Amp
Connector
RF Amplifier
Port(s)
One forward segment
FWD B
→
F1 INP
P1, P3, P4, P6
One return segment
Use plug-in RS4000-xx
RET 6
←
←
R1 OUT
P1, P3, P4, P6
Two return segments
Two transceivers
Use plug-in RS4000-xx
RET 6
RET 3
←
←
R1 OUT
R2 OUT
P1, P3, P4, P6
Two return segments
One transceiver
Use plug-in RS4000-xx
RET 6
RET 4
←
←
R1 OUT
R2 OUT
P1, P3, P4, P6
Return path RF cables determine the return path segmentation scheme (1 or 2 segments). Return plug-in
RS4000-00 or RS4000-SW is required for either case.
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