21
XYR400E Ethernet Modem
Version 1
5/1/08
LED Indication
The following table details the status of the indicating LEDs on the front panel under
normal
operating conditions.
LED Indicator
Condition
Meaning
OK
GREEN
Normal Operation
OK
RED
Supply voltage too low.
Radio RX
GREEN flash
Radio receiving data
Radio RX
RED flash
Weak radio signal
Radio TX
Flash
Radio Transmitting
Radio LINK
On
On when a radio communications link is
established
Radio LINK
Off
Communications failure or radio link not
established
Radio LINK
GREEN flash
RED flash
Serial Port Receiving
CTS low
LAN
ON
Link Established on Ethernet port
LAN
Flash
Activity on Ethernet port.
Serial
GREEN flash
Rs232 Serial Port Activity
Serial
RED flash
Rs485 Serial Port Activity
DIO
On
Digital Output ON
or
Input is grounded.
DIO
Off
Digital Output OFF
and
Input is open circuit.
The Ethernet RJ45 port incorporates two indication LEDs. The LINK LED comes on when there is
a connection on the Ethernet port, and will blink off briefly when activity is detected on the Ethernet
Port. The 100MB LED indicates that the connection is at 100 MBit/Sec. The 100MB LED will be
off for 10MB/Sec connection.
Other conditions indicating a fault are described in Chapter Six
Troubleshooting
.
3.2
Selecting a Channel
The XYR 400E conforms to the IEEE 802.11 Wireless LAN specification. The XYR 400E
supports 11 radio channels, each 5MHz wide, in the range 2412MHz to 2462MHz. Only one of
these channels is used for a connection. The desired channel is selected and configured at the
Access Point, and is then used for all beacon transmissions and connections. Clients scan all 11
channels for a suitable Access Point and then adopt the same channel as the AP when a connection