Motorola SG2-DRT-3X Installation Sheet page 4

4 STARLINE
Installing the SG2-DRT-3X in the SG2440 Node
The SG2440 carries each RF return path individually to the lid board and no adjustments to the
electronics package (E-pack) are necessary.
Before you install the SG2-DRT-3X in the SG2440, you must configure the node with the
SG2440 DR-3X board. In this configuration, the RF return signals from RP1 and RP3 are
combined and placed onto the D-subconnector beneath the double-wide transmitter module. The
RF return signals from RP2 are routed to the MCX connector DRT1. The RF return signals from
RP4 are routed to the MCX connector DRT2. RF cables are used to route the signal from DRT1
and DRT2 to the top of the transmitter to RF
If different combining scenarios are required, you may reconfigure the RF RP cables on the
lid board.
Figure 4 illustrates a block diagram of the SG2440-DR-3X return configuration.
Figure 4
SG2440-DR-3X return configuration
E-PACK
Figure 5 illustrates the SG2440-DR-3X return board.
Figure 5
SG2440-DR-3X return board
SG2-DRT-3X Installation Sheet
PLUG-IN
BOARD
RP1
RP3
RP2 3.5 dB
RP4 3.5 dB
T1
and RF
INPUT A INPUT B
LID
TX
D sub location
DRT1 DRT1
(MCX)
DRT2 DRT2
(MCX)
R5 R6
R1 R2 R3 R4
J9
respectively.
XMTR
INPUT
C
A
B