Motorola Starline SG1000 Installation And Operation Manual page 20

Figure 2-6 illustrates a dual-output, optical-return configuration using the SG1-DFBT/*,
DFBT3/*, IFPT/*, EIFPT/*, or FPT/* return-path transmitter:
Figure 2-6
SG1000 – dual-output, optical-return block diagram
25 dBmV @ 0.0 dBm Input, 79 channels, NTSC, ALM-9
19 dBmV @ -3.0 dBm Input, 79 channels, NTSC, ALM-9
Fixed
Pad
-2.0 dB
Optical Optical power
power test point
monitor (1.0 V/mW)
Rx OPSS
SG1000 Return Path Transmitter Options
SG1-DFBT: 1 mW isolated distributed feedback
SG1-DFBT3: 2 mW isolated distributed feedback
SG1-EIFPT: 1 mW enhanced, isolated Fabry-Perot
SG1-FPT: 0.4 mW Non-isolated Fabry-Perot
Port 3
SG1-IFPT: 0.4 mW isolated Fabry-Perot
power
Port 3
-1.5 dB
Test point
(-20 dB)
-4.5 dB -1.2 dB
JXP PIN atten 1 DR
0.0 dB -1.0 dB
Driver
TC curve Temp
generator sensor
Rx OPSS
Status monitor
ingress control
Tx OPSS
-16 dB
-0.3 dB
0.0 dB -1.0 dB 20.5 dB
19 dB std.
JXP FEQ
27 dB high
Silicon
-3.75 dB
Silicon
JXP FEQ
-1.0 dB 20.5 dB
0.0 dB
Test point
(-20 dB)
Ingress
JXP
switch
-2.0 dB 0.0 dB -0.3 dB
-3.75
Test point
dB
(-20 dB)
Ingress
JXP
switch
-2.0 dB 0.0 dB -0.3 dB
SG1000 Split Third Port Installation and Operation Manual
Overview 2-9
Test point
(-20 dB)
-16.0 dB
-1.0 dB
-1.5 dB
H
Port 1
L
-1.0 dB
-0.5 dB
Port 1
Test point
power
(-20 dB)
Jumper or
-1.0 dB
plug-in DC
-1.5 dB
H
Port 2
L
-1.0 dB
-0.5 dB
Port 2
power