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Connecting for Serial Communication
The front panel Config ports on both the transmitter and the receiver (see
on page 10 and
an RS-232 connection. Connect a 9-pin D-to-2.5 mm cable from the host computer
serial port to the Config port on either the transmitter or receiver front panel to enable
serial communication. SIS commands can be entered at the computer and issued to the
transmitter and receiver through these ports to control and configure the unit.
NOTE: All SIS commands except those enabling peripheral emulation must be issued
The protocol for the ports is 9600 baud, 8 data bits, 1 stop bit, and no parity.
An optional 9-pin D-to-2.5 mm TRS configuration cable is available from Extron and can
be used to connect your computer to this port. Figure 10 shows the configuration and pin
assignments of this cable.
1
5
Figure 10.
Enabling and Disabling Peripheral Emulation
The transmitter can be set up to emulate a mouse and keyboard on the host computer that
is connected to the transmitter Host input port. This allows the computer to boot up in the
event that it requires a USB keyboard or mouse to be present.
When peripheral emulation is disabled, up to four USB hubs can be connected in a series
to the receiver. When peripheral emulation is enabled, up to three hubs can be connected.
Using Extron Simple Instruction Set (SIS) commands issued to the transmitter, you can
disable and enable peripheral emulation (by default, peripheral emulation is enabled). The
following peripheral emulation commands can be issued to the transmitter only:
•
•
See
entering SIS commands.
figure
7,
, on page 11) enable communication with a computer via
B
to both the transmitter and receiver. For example, after connecting the host computer
to the transmitter and issuing commands, you must disconnect the RS-232 cable
from the transmitter, connect the cable to the receiver, then reissue the same
commands to the receiver.
6
6
9
9
9-pin D
Connection
Pin 2
Computer Rx line
Pin 3
Computer Tx line
Pin 5
Computer signal ground
Optional 9-pin D to 2.5 mm TRS Cable for the Config Port
To disable: E
}
E 0 USBC
To enable: E
}
E 1 USBC
Remote Configuration and
FOX T/R USB Extender Plus • Installation and Operation
6 feet
(1.8 m)
Tip
Ring
Sleeve (Gnd)
TRS Plug
Tip
Ring
Sleeve
Control, beginning on page 17, for information on
figure
6,
,
B
14
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