Motorola SG2-DRT-3X ユーザーズマニュアル
4
STARLINE
SG2-DRT-3X Installation Sheet
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.
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
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
INPUT
A
and RF
INPUT
B
respectively.
If different combining scenarios are required, you may reconfigure the RF RP cables on the
lid board.
lid board.
Figure 4 illustrates a block diagram of the SG2440-DR-3X return configuration.
Figure 4
SG2440-DR-3X return configuration
SG2440-DR-3X return configuration
RP1
DRT1
DRT2
RP3
RP2
RP4
3.5 dB
3.5 dB
(MCX)
(MCX)
PLUG-IN
BOARD
E-PACK
LID
TX
D sub location
DRT1
DRT2
XMTR
INPUT
C
A
B
Figure 5 illustrates the SG2440-DR-3X return board.
Figure 5
SG2440-DR-3X return board
SG2440-DR-3X return board
T1
R5
R1 R2
J9
R6
R4
R3