GE Security EST3 User Manual

Service and troubleshooting
8.10 EST3 Installation and Service Manual
network communication between CPU modules in other cabinets
is also processed by the CPU. Network communication is
RS-485 when the 3-RS485 card is installed in CPU connector J2,
and fiber optic when the 3-FIBMB or 3-NSHM module is
connected to J2 of the CPU.
Network and audio data circuits
Figure 8-1 and Table 8-4 show the location and normal state of
the communication status LEDs on the CPU module.
TB1
SUP
C
A
LARMTROUBLE
O
N
C
NC
O
NC
-
A
C
NN
O
N
C
N
NETWORK
+
B
+
AA
-
AUDIOAUDIO
B
-+
A IN A OUT
+--
R
X
111
T
X
R
T
S
2122
C
X
O
M
R
R
T
X
T
S
2
C
O
M
IN
OUT
B OUT
AUDIO
++
AUDIO
B IN
--
J1
Rx1
Rx2
Rx3
Tx1
Tx2
Tx3
[CPULEDS.CDR]
Figure 8-1: CPU module
Table 8-4: CPU LED indications
LED Normal
state
Description
RX1 Flicker Local Rail Receive Activity
TX1 Flicker Local Rail Transmit Activity
RX2 Flicker Network Data Ch A Receive Activity
TX2 Flicker Network Data Ch A Transmit Activity

GE Security EST3 Specifications

General

Brand	GE Security
Model	EST3
Category	Security Sensors
Language	English