FOXBOX Tx HDMI

Fiber Optic Transmitter for HDMI, Audio, and RS-232

Key Features

Transmits HDMI video, stereo audio, and RS-232 control signals very long distances over fiber optic cabling
HDCP compliant
All-digital technology provides pixel-for-pixel performance with signals up to 1920x1200, including HDTV 1080p/60
Key Minder^® continuously verifies HDCP compliance for quick, reliable switching
EDID Minder^® automatically manages EDID communication between connected devices
Buffered HDMI input loop-through

Model	Version Description	Part #
FOXBOX Tx HDMI MM	Multimode - Transmitter	60-1174-11
FOXBOX Tx HDMI SM	Singlemode - Transmitter	60-1174-12

The Extron FOXBOX Tx HDMI Fiber Optic Extender is a transmitter for long haul transmission of HDCP-compliant HDMI video, stereo audio, and RS-232 control signals over fiber optic cabling. Engineered for reliability and exceptional high resolution image performance, it uses Extron all-digital technology to deliver perfect pixel-for-pixel transmission of HDMI computer-video images up to WUXGA 1920x1200 resolution, including HDTV 1080p/60. Designed specifically for AV systems, the FOXBOX Tx HDMI also includes many integrator-friendly features such as Key Minder^®, EDID Minder^®, audio embedding, and real-time system monitoring. A compact, low profile enclosure allows for discreet installation.

The FOXBOX Tx HDMI is part of the extensive FOX Series of fiber optic products from Extron and is compatible with FOX Series HDMI, DVI Plus, DVI, and VGA receivers. The FOXBOX Tx HDMI transmitter can be used for simple point-to-point applications or in combination with FOX Series matrix switchers for support of wider installations.

The FOXBOX Tx HDMI is ideal for a wide range of applications requiring long distance transmission of high resolution 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 FOXBOX Tx HDMI features industry standard LC-type connectivity.

The transmitter accepts and digitizes unbalanced stereo audio and RS-232 control signals, transmitting them along with the HDMI video signals. It features EDID Minder and Key Minder to enhance and simplify integration of HDMI-equipped devices. EDID Minder automatically manages EDID by maintaining continuous EDID communication with the source, ensuring that it powers up properly and maintains video output. For HDMI signals with protected content, Key Minder authenticates and maintains continuous HDCP encryption to support quick and reliable transmission across a fiber optic infrastructure.

The FOXBOX Tx HDMI MM supports multimode fiber at 850 nm, which is typically used within buildings or facilities with moderate-range transmission distances. The FOXBOX Tx HDMI 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.

HDMI-to-Analog RGB Conversion

The FOXBOX Tx HDMI is ideal for hybrid AV systems that include a variety of analog and digital displays and sources. Pairing the FOXBOX Tx HDMI with a FOX Series VGA receiver provides easy conversion of HDMI to analog RGB for non-HDCP content.

Features

Transmits HDMI video, stereo audio, and RS-232 control signals very long distances over fiber optic cabling

Inputs: HDMI connector with buffered input loop-through, unbalanced stereo audio on 3.5 mm stereo mini jack

HDCP compliant

User-selectable HDCP authorization — Allows the FOXBOX Tx HDMI to appear HDCP compliant or non‑HDCP compliant to the connected source, which is beneficial if the source automatically encrypts all content when connected to an HDCP-compliant device. Protected material is not passed in non‑HDCP mode.

All-digital technology provides pixel-for-pixel performance with signals up to 1920x1200, including HDTV 1080p/60 — The FOXBOX Tx HDMI delivers pixel-for-pixel transmission of video signals to ensure optimal image quality at resolutions up to 1920x1200.

Key Minder^® continuously verifies HDCP compliance for quick, reliable switching — Key Minder authenticates and maintains continuous HDCP encryption between input and output devices to ensure quick and reliable switching in professional AV environments, while enabling simultaneous distribution of a single source to multiple displays.

EDID Minder^® automatically manages EDID communication between connected devices — EDID Minder ensures that all sources power up properly and reliably output content for display.

Buffered HDMI input loop-through — A buffered HDMI input loop-through provides an output signal to drive a local monitor.

Audio embedding — A DIP switch on the transmitter front panel enables selection of analog audio input or digital HDMI audio. When the analog input is selected, analog stereo audio signals are converted to digital HDMI audio.

Audio gain and attenuation adjustment capability

Available as an 850 nm multimode model for moderate-range transmissions up to 2 km (1.25 miles) and a 1310 nm singlemode model for extreme distances up to 30 km (18.75 miles)

Industry standard LC connectors provide reliable physical connectivity and precise fiber core alignment

Alarm notification for fiber link loss — The FOXBOX Tx HDMI can be set up to trigger an external control system for immediate notification when a fiber link has been lost.

RS-232 control — The transmitter features RS-232 serial ports for control and configuration.

Real-time status LED indicators for troubleshooting and monitoring — Front and rear panel LEDs verify signal presence, HDCP authentication, link status, and power.

Compatible with Extron FOX Matrix Switchers - Create HDCP compliant signal distribution systems up to 1000x1000 and larger

Compatible with Extron FOX Series HDMI, DVI Plus, DVI, and VGA receivers — Compatible with FOX Series HDMI and DVI Plus receivers up to 1920x1200, including HDTV 1080p/60. Compatible with FOX Series DVI and VGA receivers up to 1600x1200, including HDTV 1080p/60.

JITC Certified — Successfully completed interoperability and information assurance testing for use in government applications and other mission-critical environments.

Includes LockIt^® cable lacing brackets — Securely fasten HDMI or USB-C^® to a device, eliminating risk of disconnection.

1" (2.5 cm) high, quarter-rack width mountable metal enclosures

External Extron Everlast™ power supply included, replacement part #70-1175-01 — Provides worldwide power compatibility with high‑demonstrated reliability and low power consumption

Extron Everlast Power Supply is covered by a 7‑year parts and labor warranty

COMPATIBLE RECEIVERS
	FOX II R DP 4K	Fiber Optic Receiver for DisplayPort, Multi-Channel Audio, RS-232, and IR
	FOXBOX Rx VGA	Fiber Optic Receiver for VGA, Audio, and RS-232
	FOXBOX SR HDMI	Fiber Optic Scaling Receiver for HDMI, Audio, and RS-232
	FOXBOX Rx HDMI	Fiber Optic Receiver for HDMI, Audio, and RS-232
	PowerCage FOX Rx HDMI	Fiber Optic Receiver for HDMI, Audio, and RS-232

COMPATIBLE RECEIVERS

FOX II R DP 4K

Fiber Optic Receiver for DisplayPort, Multi-Channel Audio, RS-232, and IR

FOXBOX Rx VGA

Fiber Optic Receiver for VGA, Audio, and RS-232

FOXBOX SR HDMI

Fiber Optic Scaling Receiver for HDMI, Audio, and RS-232

FOXBOX Rx HDMI

Fiber Optic Receiver for HDMI, Audio, and RS-232

PowerCage FOX Rx HDMI

Fiber Optic Receiver for HDMI, Audio, and RS-232

OPTIONAL ACCESSORIES
	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

OPTIONAL ACCESSORIES

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

SIMILAR PRODUCTS
	FOX II T HD 4K	Fiber Optic Transmitter for HDMI, Multi-Channel Audio, RS-232, and IR

SIMILAR PRODUCTS

FOX II T HD 4K

Fiber Optic Transmitter for HDMI, Multi-Channel Audio, RS-232, and IR

Specifications

FOXBOX Tx HDMI Series

NOTE	The analog audio signal(s) is (are) digitized in the transmitter, sent through the fiber cable, and converted back to analog audio in the receiver.

NOTE	These transceivers are class 1 laser products. They meet the safety regulations of IEC-60825.

Optical fiber interconnection between transmitter and receiver

Number/type

2 fiber optic

Connectors

2 LC connectors

Operating distance

Singlemode

30 km (18.75 miles) with singlemode (SM) cables

Multimode

300 m (985') with 62.5 µm OM1 multimode (MM) cables
1 km (3280') with 50 µm OM2 multimode (MM) cables
2 km (6561') with 50 µm OM3/OM4 2000 MHz bandwidth laser optimized multimode cable

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 MM, 1310 nm for SM

Data rate

4.25 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

Video

NOTE	*Appropriate HDMI to DVI-D cables or adapters are required for DVI signal input/output.

Resolution range

640x480 up to 1920x1200 @ 60Hz, including 480p, 576p, 720p, 1080i, 1080p @ 60Hz, sampled pixel for pixel; higher resolution 2K (2048x1080) @ 60 Hz, undersampled

Formats

RGB and YCbCr digital video

EDID

Supports emulation of custom or factory preset Extended Display Identification Data (EDID) tables.

HDCP

Compliant with High-bandwidth Digital Content Protection (HDCP) using DVI and HDMI standards

Standards

DVI 1.0, HDMI, HDCP 1.1, CEA-861E

Video input and loop through

Number/signal type

1 single link HDMI input
1 single link HDMI loop-through

Connectors

2 female HDMI type A (1 for input, 1 for loop-through)

Nominal level

0.8 Vp-p

Video output — See the FOXBOX Rx HDMI receivers specifications

Audio

Gain

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

0.10% @ 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 input

Number/signal type

1 unbalanced stereo or 2 unbalanced mono
1 stereo, de-embedded from HDMI (2-ch, PCM only)

Connectors

(1) 3.5 mm mini stereo jack
1 female HDMI, type A

Impedance

>10k ohms unbalanced, DC coupled

Nominal level

-10 dBV (316 mVrms)

Maximum level

+8.9 dBV, (unbalanced) at 1% THD+N

NOTE	0 dBu = 0.775 Vrms, 0 dBV = 1 Vrms, 0 dBV ≈ 2 dBu

Audio output — See the FOXBOX Rx HDMI receivers specifications

Communications — transmitter

Serial control ports on each unit

Control

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 115,200 baud

Serial control pin configuration

Mini stereo jack: tip = Tx, ring = Rx, sleeve = GND
Captive screw: 1 = Tx, 2 = Rx, 3 = GND

Program control

Extron control/configuration program for Windows^®
Extron Simple Instruction Set (SIS^™)

General

Power supply

External
Input: 100-240 VAC, 50-60 Hz
Output: 12 VDC, 1.5 A, 18 watts

Power consumption

Device

5.7 watts, 12 VDC

Device and power supply

7.2 watts, 12 VDC

Ambient 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 top and side panels

Thermal dissipation

Device

16.1 BTU/hr

Device and power supply

21.3 BTU/hr

Mounting

Rack mount

Yes, with optional rack shelf

Furniture mount

Yes, with optional under desk mounting kit

Enclosure type

Metal

Enclosure dimensions

1.0" H x 4.3" W x 6.0" D (quarter rack wide)
(2.5 cm H x 10.9 cm W x 15.2 cm D)
(Depth excludes connectors.)

Product weight

0.7 lbs (0.3 kg)

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.

(4378-090718-D13 )

Shipping Dimensions and Weights
Part #	Height	Width	Depth	Weight
60-1174-11	3.0" (7.6 cm)	12.81" (32.5 cm)	9.25" (23.5 cm)	2.24 lbs (1.02 kg)
60-1174-12	3.0" (7.6 cm)	12.81" (32.5 cm)	9.25" (23.5 cm)	2.24 lbs (1.02 kg)

FOXBOX Tx HDMI

HDMI-to-Analog RGB Conversion

Features

Specifications

Diagram

Panel Drawing