Extron Electronics USB Extenders User Guide - Manual (Page 18)

System Operation
No drivers are required for a host PC to function with the USB Extenders. The transmitter
is detected by the operating system and appropriate USB drivers are loaded. Certain USB
peripherals, such as gaming keyboards, USB interactive whiteboards, scanners, printers,
and similar devices, require specific drivers installed on the PC. See the USB device
installation instructions or the peripheral manufacturer website to obtain drivers.
Once the transmitter, the receiver, the PC or USB host, and peripherals are connected,
have appropropriate drivers loaded, and are powered up, the system is fully operational. If
problems are encountered, ensure all cables are routed and connected properly and the
latest drivers for each peripheral are installed.
Troubleshooting
USB signals are generally reliable but are susceptible to bad connections or cables that
are too long. The TP cable can have the same issues. To avoid the loss of data and
communications, follow these guidelines:
• The USB cable on the transmitter host connection or the receiver hub ports should not
exceed 10 feet (3 m).
• When connecting the host or peripherals, use only cable designed for USB signals.
• Avoid or limit the use of adapters.
• The USB Extender works as described in point-to-point applications. Do not use
additional adapters, patch panels, or couplers with the host USB cables, hub USB
cables, or twisted pair cables. Additional links in the signal chain can result in the
reduction of signal integrity and overall cable length performance.
When properly connected and operating, the transmitter and receiver Power LEDs, Link
LEDs and Host LEDs are lit. The hub LED for each connected peripheral recognized by the
host PC is also lit.
Front panel LEDs are also useful for troubleshooting. The following table outlines operating
details indicated by the LEDs.
Transmitter (Tx) Receiver (Rx)
LED
Indicator
On Off On Off
Power 12 VDC supply is connected
and operating properly, or
host is properly supplying
power. 12 VDC supply is not connected
or is defective.
If a transmitter supply is not
being used, USB host is either
not on or not providing power, or
the USB cable is disconnected. 12 VDC supply is connected
and operating properly. 12 VDC supply is not connected
or defective.
Link Both transmitter and receiver
have power and TP cable is
connected properly. If both Power LEDs are on, the
TP cable is not connected or is
improperly wired.
If a transmitter supply is not
being used, USB host is either
not on or is not providing power. Both transmitter and receiver
have power and TP cable is
connected properly. If both Power LEDs are on, the
TP cable is not connected or is
improperly wired.
If either Power LED is off, see
the Power LED troubleshooting
instructions above.
Host When transmitter power
LED is on, lights when
communication with host PC
is established. If transmitter power LED is on,
USB cable is not connected. Lights when communication
with host PC is established.
Blinks if power and Link
LEDS are on, but no USB
devices are connected. Host USB port is not connected
or host is not communicating.
Hub N/A N/A Lights when a connected
peripheral is recognized by
the host PC. Peripheral on the USB port has
not been been recognized or is
improperly connected.
Table 1: System Troubleshooting
USB Extenders • Installation and Operation 12