User guide

Audio input — The transmitters accept an unbalanced stereo or mono audio input on a
3.5 mm mini jack.
Audio input gain/attenuation — The input audio level can be adjusted within a range of
-18 dB (attenuation) to +10 dB (gain) via the RS-232 link.
Audio output — The receivers output unbalanced stereo audio on a 3.5 mm mini jack.
Links monitoring — The front panels of the transmitters and receivers have indicators for
monitoring image and audio transmission and both fiber optic links.
Loss-of-light alarms — The rear panels of the transmitters and receivers have discrete
outputs that indicate if either of the fiber optic links have suffered a loss of the light signal.
FOX Extender Control Program — For RS-232 remote control from a PC, the Extron FOX
Extenders Control Program provides a graphical interface and drag-and-drop/point-and-click
operation.
Simple Instruction Set (SIS™) — The transmitters and receivers use the SIS for easy
remote control operation.
Audio level — The audio output is at the consumer level (-10 dBV).
Upgradable firmware — The firmware that controls the operation of each unit can be
upgraded in the field via an RS-232 link without taking the unit out of service. Firmware
upgrades are available for download on the Extron website, www.extron.com, and they
can be installed using the FOX Extender Control Program.
Memory presets — 30 memory presets are a time-saving feature that lets you store input
size and position settings relative to a specific input resolution. You can then recall those
settings, when needed, using the SIS or the control software.
Rack mounting — All FOXBOX Tx and Rx units are rack mountable in any conventional
19-inch wide rack, using an Extron 9.5-inch or 6-inch deep rack shelf.
Power — The 100 VAC to 240 VAC, 50-60 Hz external power supply for each unit provides
worldwide power compatibility.
FOXBOX Tx/Rx • Introduction 6