Redundant Receiver Mode; Broadband/Narrowcast Mode; Figure 5-2 Redundant Receiver; Figure 5-3 Broadband/Narrowcast - Motorola Starline SG 2000 Installation And Operation Manual

5 - 2 O p e r a t i o n

Redundant Receiver Mode

Operation in the redundant mode requires the installation of two optical receivers, one in position A
and the other in position B. An SG2-ABJ/P jumper board must be plugged into the lid motherboard.
Figure 3-1 illustrates the location of this jumper board.
The SG2-LIDB distributes an RF signal from receiver A or B to the RF chassis as illustrated in
Figure 5-2:
F i g u r e 5- 2
Red u nd ant r e ce iv e r
Optical
JXP
receiver C
Optical
JXP
receiver B
Optical
JXP
receiver A

Broadband/Narrowcast Mode

For broadband/narrowcast operation, the broadcast optical receiver must be installed in position C
and the narrowcast receiver in position A. If redundancy is required for the narrowcast channel,
install the backup receiver in position B. An SG2-FBS split-band combiner board must also be
plugged into the lid motherboard as illustrated in Figure 3-1.
The SG2-LIDB distributes a broadband signal from receiver C to the RF chassis. It also distributes a
narrowcast signal from receiver A or B to the RF chassis as illustrated in Figure 5-3:
F i g u r e 5- 3
B r o ad ba n d / n a r ro w c a st
Optical
receiver C
Optical
Secondary
receiver B
Optical
Primary
receiver A
S G 2 0 0 0 I n s t a l l a t i o n a n d O p e r a t i o n M a n u a l
SG2-ABJ/P
JXP
Relay
JXP
JXP
Relay
JXP
A
SG2-FBS
A
HPF
RF chassis
RF chassis