ABB ETL600 - Page 34

ABB Switzerland Ltd 1KHW001489-EN ETL600
However, the bands can also be separated in frequency as shown in
Fig. 3-2b. ETL600 offers nominal bandwidths from 4 to 32 kHz.
ETL600
PR
SCADA
Service
PC
PBX
Multi Service
Multiplexer/
Router
Protection commands
V.24, 4-w 600 Ohm AF
2-w FXS
V.24 ,USB
V.11
2-w FXO, 4-w FXO
PBX
G.703/704 FXO, S0
2-w FXS
SCADA
V.24
LAN
Ethernet / IP
WAN
E1/T1
V.24 ,USB
ETL600
PR
SCADA
Service
PC
PBX
Multi Service
Multiplexer/
Router
Protection commands
V.24, 4-w 600 Ohm AF
2-w FXS
V.24 ,USB
V.11
2-w FXO, 4-w FXO
PBX
G.703/704 FXO, S0
2-w FXS
SCADA
V.24
LAN
Ethernet / IP
WAN
E1/T1
V.24 ,USB
LT
LT
CD
CC CC
SCADA RTU or Master Station
PBX Telephone Exchange
LAN Local Area Network
WAN Wide Area Network
CD
LT Line Trap
CC Coupling Capacitor
CD Coupling Device
PR Protection Relay
Fig. 3-1 ETL600 with a wide range of services
n*4 kHz
Frequency
a
b
n*4 kHz m*0.5 kHz
n*4 kHz
Frequency
n*4 kHz
Bn Bn
Bn Bn
Fig. 3-2 Adjacent (a) and non-adjacent (b) frequency bands
3-2 November 2005 Structure and Function