Motorola SG4-DRT-2X manual Segmented return board signal flow

STARLINE13

Figure 13 illustrates the segmented return plug-in board.

Figure 13

Segmented return board

IN2

IN1

J7
C11	R5
	C12
R8
R7	R6
C10	C12
	R4

J6

TX2

J5

R9

SM

C7

R3

R10

R11

J4

R2

C6

J3

C1

	C9		C2
T1			C3
		C8
			R1

TX1

Figure 14 illustrates the signal flow through the segmented return board:

Figure 14

Segmented return board – signal flow

TX2 Pad IN2 -0.5dB

TX1 IN1

Pad	SM
Loss = 0.9 dB

To set up the segmented return option:

1Confirm that dual SG4-DRT-2X return transmitters are installed in lid optics slots 3 and 4 and 5 and 6.

2Confirm that a segmented return board is installed in the return configuration locations 2 and 3 as illustrated in Figure 11.

3Connect an RF cable from connector TX1 on the segmented return board in configuration location 2 to CH B of the SG4-DRT-2X in lid optics slots 3 and 4.

4Connect an RF cable from connector TX2 on the segmented return board in configuration location 2 to CH A of the SG4-DRT-2X in lid optics slots 3 and 4.

5Connect an RF cable from connector TX1 on the segmented return board in configuration location 3 to CH B of the SG4-DRT-2X in lid optics slots 5 and 6.

6Connect an RF cable from connector TX2 on the segmented return board in configuration location 3 to CH A of the SG4-DRT-2X in lid optics slots 5 and 6.

The RF cable should be approximately eight inches long and have red boots on the connector signifying the return path.

7If necessary, connect the appropriate return RF cables from the SG4-RF modules to each segmented return board.

8Ensure that the PIC cable is properly connected to the lid and power distribution board in the housing base.

SG4-DRT-2X Installation Sheet