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16
2.048Mb
p
s Wireless Modem
SALES: 0118 965 5100
AIS
(Alarm Indication Signal - E1/T1 and Fractional E1/T1 only). Red LED lights when WAN or
DTE control frame is received by the modem indicating that information that should be sent
by the modem is not received by the DTE (or the WAN). The main reason for alarm
indication signal is a physical cable problem.
1. Check the cables and connectors linking the unit with the WAN or the DTE.
2. If these are OK, check WAN or DTE functionality.
RXD and TXD
Orange RXD and TXD LEDs indicate that data present at the LIU connector is sent over the
RF link to the remote LIU connector (this does not indicate that end equipment exists or is
synchronized).
Radio
Rx Sync
Green LED lights indicating radio receiving link active.
TX Sync
Green LED lights indicating radio transmission link active.
After power-on of the 2.048Mbps Wireless Modem configured as Master, the unit
immediately starts transmitting. At this stage, the TX Sync LED on the Master is on while the
RX Sync LED is off.
After power-on of the 2.048Mbps Wireless Modem configured as Slave, the unit starts to
search for a transmitting Master. At this stage both RX Sync and TX Sync LEDs on the Slave
are off.
After the Slave synchronizes with a transmitting Master, it immediately starts transmitting.
Now, both RX Sync and TX Sync LEDs on the Slave are on..
The RX Sync LED on the Master is on after reception from the transmitting Slave is
established. Failure of radio link reception or transmission may indicate one of the following:
• A problem in the radio configuration parameters (network ID, for example).
• A problem in the radio path (obstacles, for example).
• Antennas need adjustment.