Motorola Installing the SG2-DRT-3X in the SG2440 Node, SG2440-DR-3X return configuration

4STARLINE

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 INPUT A and RF INPUT B respectively.

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		PLUG-IN		LID	XMTR
	RP1	BOARD		TX	INPUT
					C
	RP3		D sub location
	RP2	3.5 dB		DRT1	A
				(MCX)
	RP4	3.5 dB		DRT2	B
				(MCX)

Figure 5 illustrates the SG2440-DR-3X return board.

Figure 5

SG2440-DR-3X return board

T1

R5 R6

R1 R2 R3 R4

J9

SG2-DRT-3X Installation Sheet