Motorola SG4-DRT-2X - Manual (Page 13)

STARLINE 13
Figure 13 illustrates the segmented return plug-in board.
Figure 13
Segmented return board
TX1
SM
TX2
R1
J3
J5
R4
R7 R6 R9
R8
J7 J4
IN2 IN1
R5 R2
R3
T1
R10
J6
C1
2
C
12 C1
1 C7
C9
C1
0
C6
C8
C3
C2
C1
R1
1
Figure 14 illustrates the signal flow through the segmented return board:
Figure 14
Segmented return board – signal flow
-0.5dB
Loss = 0.9 dB
TX1
TX2 IN2
IN1
SM
Pad
Pad
To set up the segmented return option:
1 Confirm that dual SG4-DRT-2X return transmitters are installed in lid optics slots 3 and 4
and 5 and 6.
2 Confirm that a segmented return board is installed in the return configuration locations 2
and 3 as illustrated in Figure 11.
3 Connect 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.
4 Connect 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.
5 Connect 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.
6 Connect 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.
7 If necessary, connect the appropriate return RF cables from the SG4-RF modules to each
segmented return board.
8 Ensure that the PIC cable is properly connected to the lid and power distribution board in
the housing base.
SG4-DRT-2X Installation Sheet