User guide

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18
Serial connection
The Options port on the rear panel of every AdderLink XD522 unit operates as a
serial connection that can either:
• Beusedtoupdatethermwareoftheunit(seePerforming an upgrade
for details), or
• ProvideanRS232 serial connection that is passed between the transmitter
and receiver.
Whenever the AdderLink XD522 units are not in upgrade mode, they are ready
to transfer serial data between them at rates up to 115200 baud. When serial
devices are attached to the Options ports on the transmitter and receiver, the
units transparently convey the signals between them - no serial configuration is
required.
To connect serial devices
1 Use a serial cable to link the Options port on the rear panel of the receiver
unit with the serial device.
From the
serial device
Link connections
AdderLink XD522 transmitter and receiver units are linked by either one or two
CATx cables at a distance of up to 150 meters (492 feet). The type and quality
of the CATx cables used are crucial to the mode of operation (please see the
section Tips for achieving good quality links). If Hi-Speed USB is not needed
at the receiver then a CATx link between the B ports of the units is not required.
IMPORTANT: The signals sent through the link cables are NOT compatible
with standard networking equipment and could cause damage if
connected. Do not connect the transmitter or receiver modules to any other
networking devices.
To link the units
1 Connect the CATx link cable from port A (on the front panel) of the
transmitter unit to the LINK A port on the rear panel of the receiver unit.
From link
port A on the
transmitter
unit
From link port B
on the transmitter
unit (required only
for transfer of Hi-
Speed USB)
2 If Hi-Speed USB is required, connect the CATx link cable from port B (on the
front panel) of the transmitter unit to the LINK B port on the rear panel of
the receiver unit.