GE Security Legend IP Installation Manual page 13

Typical advanced analog system
A typical advanced analog system is shown in Figure 2. In this configuration, control commands pass through
digital recorders and alarm equipment and video is switched to various monitors. For additional details, refer to
the data sheet, user manual, or application guide.
Figure 2. Typical advanced analog system
Mon 1 Mon 2
EARTH GROUND
A
RS485
B
A
B RS422 IN
A
RS422 OUT
B
SPEAKER SHIELD
+
SPEAKER
Controller
keypad
Digital recorder
Video
loop-
through
Matrix switcher
Mon 3 Mon 4
Data distributor
EARTH GROUND
A
RS485
B
A
B RS422 IN
A
RS422 OUT
B
SPEAKER SHIELD
+
SPEAKER
Alarm input
Controller
keypad
Dome
Alarm chassis
module
Alarm inputs
Chapter 1
Introduction
N/O
COM
N/C
Local relay
outputs
Local alarm
inputs
(dry contacts)
1 8
Alarms/relays
Video
RS-422 data
RS-485 data
5