Extron Electronics FOX USB Extender User Guide - Manual (Page 14)

Troubleshooting
USB signals are generally reliable but are susceptible to bad connections or cables that are
too long. To avoid the loss of data and communications, follow these guidelines:
• The transmitter host USB cable and receiver hub port USB cables should not exceed
10 feet (3 m).
• Avoid or limit the use of adapters.
• The FOX 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 fiber optic 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, both 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 may also be useful for troubleshooting. The table on the next page outlines
operating details indicated by the LEDs.
Table 1. System Troubleshooting
Transmitter Receiver
LED Lit Unlit Lit Unlit
The 12 VDC supply is connected
and operating properly or the
host is properly supplying
power. The 12 VDC supply is not
connected or is defective.
If a transmitter supply is not
being used, the USB host is
either not on or not providing
power, or the USB cable is
disconnected. The 12 VDC supply is
connected and operating
properly. The 12 VDC supply is not
connected or defective.
Link Both the transmitter and
receiver have power and the
fiber optic cables are connected
properly.
(The transmitter Link LED
indicates light from the
receiver.) If both Power LEDs are on,
the fiber optic cable is not
connected.
If a transmitter supply is not
being used, the USB host is
either not on or is not providing
power. Both the transmitter and
receiver have power and the
fiber optic cables are connected
properly.
(The receiver Link LED indicates
light from the transmitter.) If both Power LEDs are on,
the fiber optic cables are not
connected or are improperly
wired.
If either Power LED is off, see
the Power LED troubleshooting
instructions above.
Host When the transmitter Host
LED is on, the transmitter is
communicating with the host
computer. If the transmitter Host LED is on,
the USB cable is not connected.
The LED blinks if the transmitter
is not communicating with the
receiver. Lights when communication
with the host computer is
established. The host USB port is not
connected or the host is not
communicating.
Hub N/A N/A Lights when the peripheral
on the USB port has been
recognized by the host
computer. The peripheral on the USB port
has not been recognized or is
improperly connected.
If your problems persist, call the Extron S3 Sales & Technical Support Hotline. See the contact
numbers on the
last page of this guide for the Extron office nearest you
FOX USB Extender • Installation and Operation 8