Fiber Optic Receiver for Video, Audio, and RS-232
Key Features
  • Accepts fiber optic signals from a FOX Series AV transmitter and provides standard definition video, stereo audio, and RS-232 control signals
  • Provides component video, S-video, and composite video signals
  • All-digital technology provides pixel-for-pixel performance
  • Picture and audio adjustments
  • Internal transcoding with selectable output format
  • Daisy-chain capability
The Extron FOX Rx AV
Model Version Description Part #
FOX Rx AV MM Multimode - Receiver 60-941-21
FOX Rx AV SM Singlemode - Receiver 60-941-22

The Extron FOX Rx AV Fiber Optic Receiver enables long haul transmission of standard definition video, audio, and RS-232 control signals over a single fiber. Engineered for reliability and exceptional video performance, it uses Extron all-digital technology to deliver perfect pixel-for-pixel transmission of video signals including component video, S-video, and composite video. Designed specifically for AV systems, the FOX Rx AV includes many integrator-friendly features such as picture and audio adjustments, RS-232 control, and real-time system monitoring.

The FOX Rx AV is part of the extensive FOX Series of fiber optic products from Extron and is compatible with FOX Tx AV and PowerCage™ FOX Tx AV transmitters. It can be used for simple point-to-point applications or in combination with FOX Series distribution amplifiers and matrix switchers to handle the most challenging AV system designs, from a simple conference room to an enterprise-wide fiber optic distribution system.

The receiver is ideal for a wide range of applications requiring long distance transmission of video content with the highest quality. Because transmission of content is inherently secure and immune to outside interference, fiber applications are favored in government, military, and medical environments. The FOX Rx AV features industry standard LC-type connectivity.

The FOX Rx AV is available in two versions, multimode and singlemode. The FOX Rx AV MM supports multimode fiber at 850 nm, which is typically used within buildings or facilities with moderate-range transmission distances. The FOX Rx AV SM supports singlemode as well as multimode fiber at 1310 nm. Singlemode fiber offers long-range transmission capability over extreme distances of up to 30 km (18.75 miles). It is used in very large facilities such as airports and stadiums, as well as connecting over very long distances between facilities such as university campuses.

Offering convenient integration into AV systems, the FOX Rx AV receiver features video format conversion for component video, S-video, or composite video output. Several receivers may be daisy-chained to support applications with displays at multiple locations.

The FOX Rx AV and its corresponding transmitter can be controlled and configured using the RS-232 port on the transmitter. With a second fiber link installed, functions for both units can be controlled at either location. Since the units are typically situated far apart, this capability adds considerable versatility, enabling verification of fiber link status between the units as well as the presence of video and audio input signals at the transmitter.

The receiver is housed in a compact 1U, quarter rack width enclosure for convenient installation in many environments.


  FOX Tx AV Fiber Optic Transmitter for Video, Audio, and RS-232
  MBD 129 Through-Desk Mount Kit for 1/4 or 1/2 Rack Width, Two-Piece Enclosures
  MBU 125 Low-Profile Mount Kit for 1/4 and 1/2 Rack Width, Two-Piece Enclosures
  RSB 126 Basic Rack Shelf for 6" Deep Products
  RSU 126 Universal Rack Shelf Kit for 6" Deep Products
  RFF Series Basic Rack False Faceplate Kits
  2LC OM4 MM P LC to LC Laser-Optimized Multimode Fiber Optic Cable Assemblies - Plenum
  2LC SM P LC to LC Bend-Insensitive Singlemode Fiber Optic Cable Assemblies - Plenum


 NOTE     The FOX Rx AV is a receiver with one or two fiber optic cables linking it to a transmitter.
 NOTE     The analog video input signal is digitized pixel for pixel in the transmitter, sent digitally through the fiber cable, and converted back to analog video in the receiver.
 NOTE     The analog audio signals are digitized in the transmitter, sent through the fiber cable, and converted back to analog audio in the receiver.
 NOTE     The FOX Rx AV receiver is a class 1 laser product. It meets the safety regulations of IEC-60825.
Optical fiber interconnection between transmitter and receiver
   Number/type 1 or 2 fiber optic
    NOTE     Only one fiber is required to transmit video, audio, and unidirectional data. A second fiber is required to transmit return data for bidirectional control and communication.
   Connectors 2 LC connectors
   Operating distance 
      Singlemode 30 km (18.75 miles) with singlemode (SM) cables with a FOX Rx AV SM
      Multimode 500 m (1640') with 62.5 µm multimode (MM) cables with a FOX Rx AV MM
1 km (3280') with 50 µm multimode cables with a FOX Rx AV MM
2 km (6561') with 50 µm, 2000 MHz bandwidth laser optimized multimode cables with a FOX Rx AV MM
    NOTE     Operating distance is approximate. These are typical maximum distances that may vary depending on factors such as fiber type, fiber bandwidth, connector splicing, losses, modal or chromatic dispersion, environmental factors, and kinks.
   Nominal peak wavelength 850 nm for FOX Rx AV MM, 1310 nm for FOX Rx AV SM
   Data rate 2.125 Gbps
   Transmission power 
      Singlemode -5 dBm, typical
      Multimode -5 dBm, typical
   Maximum receiver sensitivity 
      Singlemode -18 dBm, typical
      Multimode -12 dBm, typical
   Optical loss budget 
      Singlemode 13 dB, maximum
      Multimode 7 dB, maximum
   Gain Unity
      Input NTSC 3.58, NTSC 4.43, PAL, SECAM, autodetected
      Output NTSC 3.58, PAL (follows vertical rate)
   Decoder type Adaptive 2D, digital comb filter
Video output
   Number/signal type 1 component (Y, R-Y, B-Y) video, S-video, composite video
   Connectors 1 x 3 female BNC or 1 female 4-pin mini DIN for S-video
   Nominal level 1.0 Vp-p for Y of component video and S-video, and for composite video
0.7 Vp-p for R-Y, B-Y of component video
0.3 Vp-p for C of S-video
   Minimum/maximum levels 0.3 V to 1.5 Vp-p
   Impedance 75 ohms @ 5 MHz
   Return loss <-40 dB @ 5 MHz
   DC offset +350 mV, maximum, with input at 0 offset
   Video delay 1-2 frames
      Range Adjustable, -18 dB to +10 dB
      Default Unbalanced output: -6 dB; balanced output: 0 dB
   Frequency response 20 Hz to 20 kHz, ±0.5 dB
   THD + Noise 0.15% @ 1 kHz at nominal level
   S/N >80 dB at maximum output (unweighted)
   CMRR 65 dB @ 20 Hz to 20 kHz
   Audio bits per sample 18 bits per channel, 2 channels (L, R)
   Sampling rate 48 kHz
Audio output
   Number/signal type 1 stereo, balanced/unbalanced or
2 mono, balanced/unbalanced
   Connectors (1) 3.5 mm captive screw connector, 5 pole
   Impedance 50 ohms unbalanced, 100 ohms balanced
   Nominal level +4 dBu (1.23 Vrms), -10 dBV (316 mVrms)
   Maximum level (Hi-Z) >+19 dBu, unbalanced at 1% THD+N
   Maximum level (600 ohm) >+15 dBm, unbalanced at 1% THD+N
   Audio delay 1.5 frames
   Serial control ports
      Control 1 RS-232, 3.5 mm captive screw connector, 5 pole (3 pins are used) (rear panel); in parallel with front panel jack
1 RS-232, 2.5 mm mini stereo jack (front panel)
      Pass-through 1 RS-232, 3.5 mm captive screw connector, 5 pole (3 pins are used) (rear panel)
   Baud rate and protocol 
      Control 9600 baud, 8 data bits, 1 stop bit, no parity
      Pass-through 9600 to 115200 baud
   Serial control pin configurations
      Pass-through Captive screw connector: 1 = Tx, 2 = Rx, 3 = GND
      Control Captive screw connector: 3 = GND, 4 = Tx, 5 = Rx
Mini stereo jack: tip = Tx, ring = Rx, sleeve = GND
   Program control Extron control/configuration program for Windows®
Extron Simple Instruction Set (SIS)
   Power supply External
Input: 100-240 VAC, 50-60 Hz
Output: 12 VDC, 1.5 A, 18 watts
   Power input requirements 12 VDC, 0.6 A
   Temperature/humidity Storage: -40 to +158 °F (-40 to +70 °C) / 10% to 90%, noncondensing
Operating: +32 to +122 °F (0 to +50 °C) / 10% to 90%, noncondensing
   Cooling Convection, vents on left side and top
      Rack mount Yes, with optional rack shelf kit
      Furniture mount Yes, with optional under-desk mounting kit
   Enclosure type Metal
   Enclosure dimensions 1.7" H x 4.3" W x 6.0" D (1U high, quarter rack wide)
(4.3 cm H x 10.9 cm W x 15.2 cm D)
(Depth excludes connectors.)
   Product weight 0.8 lbs (0.4 kg) per unit, 1.6 lbs (0.7 kg) per pair
   Regulatory compliance CE, c-UL UL, CE**, C-tick, FCC Class A**, ICES, VCCI,
Complies with the appropriate requirements of RoHS, WEEE
   Product warranty 3 years parts and labor
   Everlast power supply warranty 7 years parts and labor
    NOTE     All nominal levels are at ±10%.
    NOTE     Specifications are subject to change without notice.
Shipping Dimensions and Weights
    Part # Height Width Depth Weight
    60-941-21 4.13" (10.5 cm) 8.75" (22.2 cm) 12.3" (31.2 cm) 2.7 lbs (1.22 kg)
    60-941-22 4.13" (10.5 cm) 8.75" (22.2 cm) 12.3" (31.2 cm) 2.7 lbs (1.22 kg)


Application Diagram

Panel Drawing

Panel Drawing
© 2020 Extron. Specifications are subject to change without notice.