User guide

 




17
RX USB devices
The ALIF RX unit has four USB
ports to which peripherals may
be connected. The ports are
interchangeable. To connect
more than four peripherals, one
or more USB hubs may be used.
The total current that may be
drawn from the USB ports is
1.2A,whichshouldbesufcient
forakeyboard,mouse(nomorethan100mAeach)andanytwootherdevices
(500mAmaximumeach).IfmorepowerforUSBdevicesisrequired,usea
powered USB hub.
To connect a USB device
1 Connecttheleadfromthedeviceto
any of the four USB sockets on the rear
panel of the ALIF unit.
RX AUX port
TheAUXportisanRS232serial
port that allows extension of
RS232signalsuptoabaudrate
of115200.Theporthassoftware
flow control, but no hardware
flow control.
AUX
/
LINE OUT
ALIF TX
LINK
ALIF RX
LINK
VIDEO
DISPLAY
USB
DEVICES
MIC &
SPEAKERS
POWER
IN
SERIAL
LINK
ALIF TX
LINK
ALIF RX
VIDEO
DISPLAY
USB
DEVICES
MIC &
SPEAKERS
POWER
IN
SERIAL
LINK
Serial (null-modem) link
from your computer
LINE I
USER CONSOLE
MIC I
Connection from USB device
Supported USB Devices
USB devices are supported using True Emulation technology. This means that
the signals of each USB peripheral are emulated to the computer so that full
functionality is available, subject to the following limitations:
•Keyboards,miceandotherHIDdevicesaresupported.
•Storagedevices(i.e.ashdrives,USBharddisks,CD-ROMdrives)are
supported, but they may operate more slowly than with a direct connection.
•Isochronousdevices(includingmicrophones,speakers,webcamsandTV
receivers) are not currently supported.
•Manyotherdevices(suchasprinters,scanners,serialadaptersandspecialist
USB devices) will work, but due to the huge variety of devices available,
successful operation cannot be guaranteed.
To connect the AUX port
1 EnsurethatpowerisremovedfromtheALIFunit.
2 Connectasuitableserial‘null-modem’cable(seeAppendix for pin-out)
between the AUX port on the right hand side of the ALIF rear panel and
your remote serial device.