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11
LED
LED meaning, when active
PWR: Interface activity
AC
AC power is on
USB
USB host is connected
METER: Meter Interface activity
RX/TX
Data transfer; active interface
GSM: Operation and received signal strength indication
GPRS
Registered to GSM/GPRS network (call
waiting)
CSD
Registered to CSD network
CONNECT
GPRS/CSD data session active;
(connection established)
GSM: Signal level range indication*
LED
–
top
Indicates signal strength -113 to -82
dBm or less
LED
–
middle
Indicates signal strength -81 to -70
dBm
LED
–
bottom
Indicates signal strength -69 to -51
dBm or more
*Default values indicated. Signal indication level can be changed in the Menu
Table 3-2. MCL 5IP controller indicators and description
AC
PWR
METER
USB
GSM
RX/TX
GPRS
CSD
CONNECT