Product Specifications: DMCI

Product Specifications: DMCI
DigitalMedia™ SFP+ 4K Fiber Transmitter
>> Uncompressed 4K video signal extension
over fiber optic cable
>> Configurable for multimode or single-mode
fiber using SFP+ transceiver modules [2]
>> Seamless integration with DM® switchers to
enable 4k fiber output capability
>> HDCP 2.2 compliant
>> Dolby® TrueHD, Dolby Atmos®, DTS-HD®, and
uncompressed 7.1 linear PCM audio support
>> Two auto-switching HDMI® inputs
>> Balanced analog stereo audio input
>> Stereo analog-to-HDMI audio embedding
>> Local HDMI output
>> IR and RS-232 device control ports
>> CEC device control gateway
>> Gigabit Ethernet LAN port
>> Web browser setup
>> 100-240V universal power pack included
>> Compact, surface-mountable form factor
>> Requires a DMF or DMCF series receiver
The DMF-TX-4K-SFP is a fiber-based transmitter designed to function
as part of a Crestron® 4K video signal extender solution. It is used with a
companion receiver (DMF-RMC-4K-SFP or DMCF-RX-4K-SFP [1]) to support
point-to-point signal extension, and may also be used to add 4K fiber input
capability to a DigitalMedia™ switcher (see “DM® Switcher Integration”
below for details). Its “DM OUT” port allows for the insertion of an
appropriate SFP+ transceiver module to enable compatibility with multimode or single-mode fiber.[2] It also features two HDMI® inputs, one analog
audio input, a local HDMI output, IR and RS-232 control ports, and a
gigabit Ethernet LAN port. Its compact, low-profile design allows the
DMF-TX-4K-SFP to be installed discreetly on a wall, beneath a table, or
inside a lectern or credenza.
SFP+ Configurable DM Port
The “DM OUT” port on the DMF-TX-4K-SFP is configurable using SFP+
transceiver modules to enable compatibility with multimode or singlemode fiber types.[2] Each DMF-TX-4K-SFP is sold as a packaged kit
containing the transmitter and one SFP+ module as follows:
DMF-TX-4K-SR PAK KIT – Supports duplex multimode fiber at up to
1000 ft (300 m) using OM3, or 1300 ft (400 m) using OM4
DMF-TX-4K-BX PAK KIT – Supports simplex single-mode fiber at
up to 6.2 miles (10 km) using ITU-T G.652.D fiber, Crestron model
CRESFIBER8G-SM-P or equivalent
DMF-TX-4K-S PAK KIT – Supports legacy CresFiber® 8G Multimode
fiber at up to 650 ft (200 m) (Only for retrofit applications where
Crestron CRESFIBER8G-NP or CRESFIBER8G-P is already installed;
not for new installations!)
4K Ultra HD
The DMF-TX-4K-SFP enables uncompressed 4K/60 video signal extension
over fiber optic cable. Support for 4K video ensures support for the latest
generation of computers and monitors with native resolutions beyond
1080p and WUXGA. The DMF-TX-4K-SFP can handle uncompressed Full
HD 1080p, Ultra HD, 2K, and 4K video signals with support for Deep Color
and HDCP 2.2. Audio capabilities include support for high-bitrate 7.1 audio
formats like Dolby® TrueHD, Dolby Atmos®, and DTS-HD Master Audio™ as
well as uncompressed linear PCM.
2x1 HDMI® Auto-Switcher
The DMF-TX-4K-SFP includes two HDMI inputs for the connection of HD
and 4K sources. Switching between the HDMI inputs can be performed
automatically using auto-switching mode, manually using the onboard
input select button, or programmatically via a Crestron control system.
DM® Switcher Integration
The DMF-TX-4K-SFP can be used to add a single 4K fiber output to a
DM-MD series matrix switcher by simply connecting its first HDMI input to
any available HDMI output on the switcher. An Ethernet LAN connection is
also required to enable communication with the associated
control system.[3]
Analog Audio Embedding
A balanced analog audio input is also included to allow a stereo audio
source to be connected and combined with the video signal from either of
the HDMI inputs. The analog audio input can be configured to be selected
automatically if a digital audio signal is not detected on the active
HDMI input.
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DMF-TX-4K-SFP DigitalMedia™ SFP+ 4K Fiber Transmitter
Local HDMI Output
In addition to its DM output port, the DMF-TX-4K-SFP also includes an
HDMI output to allow the selected video and audio input signals to be fed
to a local display or monitor.
Gigabit LAN Connectivity
The DMF-TX-4K-SFP includes a gigabit Ethernet port for integration with a
Crestron control system via the local network. Ethernet is also transported
over the fiber interface, eliminating the need for a separate LAN connection
at the receiver, and allowing the receiver’s LAN port to be used to provide
LAN connectivity for the connected display device or some other device.[3]
Device Controller
The DMF-TX-4K-SFP includes built-in RS-232 and IR control ports to allow
for programmable control of the connected sources and other devices via
the control system. Additional control capability is afforded by harnessing
the CEC (Consumer Electronics Control) signal embedded in HDMI. Via its
Ethernet connection to the control system, the DMF-TX-4K-SFP provides a
gateway for controlling the sources right through their HDMI connections,
potentially eliminating the need for any dedicated serial cables or
IR emitters.
Web Browser Setup
Simplified setup of the DMF-TX-4K-SFP and its companion receiver is
facilitated using a web browser.
Low-Profile Installation
The DMF-TX-4K-SFP mounts conveniently to a wall, ceiling, or other flat
surface. Its compact, surface-mountable form factor fits easily behind
furniture, underneath a table, or inside a lectern or credenza. It can even
be attached directly to a single rack rail in the back of an equipment
cabinet. Power is provided by an external 100-240V universal power pack.
Please refer to the DigitalMedia Resources Webpage at for additional design tools
and reference documents.
Top View
Bottom View
Fiber Types
Fiber Type
Multimode, duplex, 850 nm
Single-mode, simplex, 1270/1330 nm
CresFiber 8G Multimode, simplex
(Only for retrofit applications where
CresFiber 8G multimode fiber is already
installed; not for new installations)
Connector Type
Maximum Cable Length
SFP+ Module [2]
Package Model
Dual LC
1000 ft (300 m) using OM3
1300 ft (400 m) using OM4
Single LC
6.2 miles (10 km)
Single SC
(via LC-to-SC patch cord
and adapter, included)
650 ft (200 m) using
NOTE: The maximum cable length for single-mode fiber is measured using ITU-T G.652.D fiber optic cable, Crestron model CRESFIBER8G-SM-P
or equivalent.
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DMF-TX-4K-SFP DigitalMedia™ SFP+ 4K Fiber Transmitter
Input Signal Types: HDMI w/Deep Color, 3D [4], & 4K support (DVI &
Dual-Mode DisplayPort compatible [5])
Output Signal Types: DM SFP+ 4K Fiber w/Deep Color, 3D [4], & 4K support
(configurable for multimode or single-mode fiber [2]); HDMI w/Deep Color,
3D [4], & 4K support (DVI compatible [5])
Switcher: 2x1 auto-switching, Crestron QuickSwitch HD™ technology
Maximum Resolutions: Scan
24 Hz
30 bit
30 Hz
24 bit
30 Hz
36 bit
60 Hz
24 bit
2560x1600 WQXGA
60 Hz
36 bit
1920x1080 HD 1080p
60 Hz
36 bit
1920x1080 HD 1080i
30 Hz
36 bit
4096x2160 4K DCI
3840x2160 Ultra HD
NOTE: Common resolutions are shown; other custom resolutions are
supported at pixel clock rates up to 300 MHz
Input Signal Types: HDMI, analog stereo
Output Signal Types: DM SFP+ 4K Fiber (configurable for multimode or
single-mode fiber [2]), HDMI
Digital Formats: Dolby Digital®, Dolby Digital EX, Dolby Digital Plus,
Dolby TrueHD, Dolby Atmos, DTS®, DTS-ES, DTS 96/24, DTS-HD High Res,
DTS-HD Master Audio™, LPCM up to 8 channels
Analog Formats: Stereo 2-channel
Switcher: 2x1, digital audio-follow-video, analog audio-follow-video or
Analog-To-Digital Conversion: 24-bit 48 kHz
Analog Performance: Frequency Response: 20 Hz to 20 kHz ±0.5 dB;
S/N Ratio: >95 dB 20 Hz to 20 kHz A-weighted;
THD+N: <0.005% @ 1 kHz;
Stereo Separation: >90 dB
Analog Input Level Compensation: ±10 dB
Ethernet: 10/100/1000 Mbps, auto-switching, auto-negotiating,
auto-discovery, full/half duplex, DHCP, IEEE 802.1X, IPv4 or IPv6,
web browser setup and control, Crestron control system integration
USB: Computer console
RS-232: 2-way device control and monitoring up to 115.2k baud with
hardware and software handshaking (via control system);
computer console
IR/Serial: 1-way device control via infrared up to 1.1 MHz or serial
TTL/RS-232 (0-5 Volts) up to 19.2k baud (via control system)
DM: DM SFP+ 4K Fiber, HDCP 2.2, EDID, CEC, Ethernet
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NOTE: Supports management of HDCP and EDID; supports management
of CEC between the connected HDMI devices and a control system
LAN: (1) 8-pin RJ45 female;
10Base-T/100Base-TX/1000Base-T Ethernet port
DM OUT: (1) DM SFP+ 4K Fiber output port;
Accepts one Crestron SFP-10G series SFP+ transceiver module (included
as part of a DMF-TX-4K PAK KIT)
HDMI OUTPUT: (1) 19-pin Type A HDMI female;
HDMI digital video/audio output (DVI compatible [5])
HDMI INPUT 1 – 2: (2) 19-pin Type A HDMI female;
HDMI digital video/audio inputs;
(DVI & Dual-Mode DisplayPort compatible [5])
AUDIO IN: (1) 5-pin 3.5 mm detachable terminal block;
Balanced/unbalanced stereo line-level audio input;
Input Impedance: 24k Ohms balanced/unbalanced;
Maximum Input Level: 4 Vrms balanced, 2 Vrms unbalanced
CONSOLE, SERIAL: (1) 8-pin RJ45 female;
RS-232 computer console port
CONSOLE, USB: (1) USB Type B female;
USB computer console port
IR 1 – 2: (1) 4-pin 3.5 mm detachable terminal block;
Comprises (2) IR/Serial ports;
IR output up to 1.1 MHz;
1-way serial TTL/RS-232 (0-5 Volts) up to 19200 baud
COM: (1) 5-pin 3.5 mm detachable terminal block;
Bidirectional RS-232 port;
Up to 115.2k baud, hardware and software handshaking support
24VDC 2.0A: (1) 2.1 x 5.5 mm DC power connector;
24 Volt DC power input;
PW-2420RU power pack included
G: (1) 6-32 screw;
Chassis ground lug
Controls & Indicators
OL: (1) Green LED, indicates online connection to a control system
via Ethernet
LAN: (2) LEDs, green indicates Ethernet link status, amber indicates
Ethernet activity
DM OUT LINK: (1) Green LED, indicates DM link status
DM OUT ACT: (1) Green LED, indicates DM link activity
HDMI OUTPUT: (1) Green LED, indicates video signal transmission at the
HDMI output
HDMI INPUT 1 – 2: (2) Green LEDs, indicate sync detection at each
corresponding HDMI input
PWR: (1) Bi-color green/amber LED, indicates operating power supplied
via the power pack, illuminates amber while booting and green when
RESET: (1) Recessed pushbutton for hardware reset
DMF-TX-4K-SFP DigitalMedia™ SFP+ 4K Fiber Transmitter
SETUP: (1) Red LED and (1) recessed pushbutton for Ethernet setup
INPUT SEL: (1) Pushbutton for manual input selection and (2) bi-color
green/amber LEDs to indicate the current active input and signal presence
at each corresponding input
Power Pack (included): Input: 1.5 Amps maximum @ 100-240 Volts AC, 50/60 Hz;
Output: 2 Amps @ 24 Volts DC;
Model: PW-2420RU
Power Consumption: 25 Watts typical
Temperature: 32° to 104° F (0° to 40° C)
Humidity: 10% to 90% RH (non-condensing)
Heat Dissipation: 85 BTU/hr
Chassis: Metal, black finish, integral mounting flanges, fan cooled; vented
top, front, bottom, and sides
Mounting: Freestanding, surface mount, or attach to a single rack rail
DMF-RMC-4K-SFP: DigitalMedia™ SFP+ 4K Fiber Receiver
DMCF-RX-4K-SFP: DigitalMedia™ SFP+ 4K Fiber Receiver Card
for DMF-CI-8
CBL Series: Crestron® Certified Interface Cables
CNSP-XX: Custom Serial Interface Cable
IRP2: IR Emitter Probe
1. Item(s) sold separately.
2. The DM port on this device is designed for use with Crestron SFP-10G series SFP+ transceiver
modules only. The fiber interface provided by the SFP+ module is exclusively for connection to
a Crestron DMF or DMCF series receiver device. It is not compatible with older Crestron
DM Fiber (-F type), DM 8G® Fiber (-S type), or DM 8G SM Fiber (-S2 type) devices.
3. The LAN connection can be made via the local LAN port on the DMF-TX-4K-SFP, or via the
LAN port on the companion receiver, but not both.
4. Please note that 3D video signals are converted to 2D at the receiver.
5. HDMI connections require an appropriate adapter or interface cable to accommodate a DVI or
Dual-Mode DisplayPort signal. CBL-HD-DVI interface cables are available separately.
This product may be purchased from an authorized Crestron dealer. To find a dealer, please
contact the Crestron sales representative for your area. A list of sales representatives is available
online at or by calling 800-237-2041.
The specific patents that cover Crestron products are listed online at:
Certain Crestron products contain open source software. For specific information, please visit
Height: 8.44 in (215 mm)
Width: 9.27 in (236 mm)
Depth: 1.50 in (39 mm)
2.0 lb (0.91 kg)
Available Models
DMF-TX-4K-SR PAK KIT: DigitalMedia™ SFP+ 4K Fiber Transmitter,
includes SFP-10G-SR SFP+ Transceiver Module for Duplex Multimode
DMF-TX-4K-BX PAK KIT: DigitalMedia™ SFP+ 4K Fiber Transmitter,
includes SFP-10G-BX-U SFP+ Transceiver Module for Simplex SingleMode Fiber
DMF-TX-4K-S PAK KIT: DigitalMedia™ SFP+ 4K Fiber Transmitter, includes
SFP-10G-S-U SFP+ Transceiver Module for CresFiber® 8G (for retrofit
applications only)
Included Accessories
PW-2420RU: 24 Volt DC Power Pack
SFP-10G-SR: SFP+ Transceiver Module, Duplex Multimode 850 nm
(Qty. 1 included with DMF-TX-4K-SR PAK KIT)
SFP-10G-BX-U: SFP+ Transceiver Module, Simplex Single-Mode
1270/1330 nm, Uplink (Qty. 1 included with DMF-TX-4K-BX PAK KIT)
SFP-10G-S-U: SFP+ Transceiver Module, CresFiber® 8G Multimode,
Uplink (Qty. 1 included with DMF-TX-4K-S PAK KIT)
Available Accessories
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Crestron, the Crestron logo, CresFiber, DigitalMedia, DM, DM 8G, and QuickSwitch HD are either
trademarks or registered trademarks of Crestron Electronics, Inc. in the United States and/or other
countries. Dolby, Dolby Atmos, and Dolby Digital are either trademarks or registered trademarks
of Dolby Laboratories in the United States and/or other countries. DTS, DTS-HD, and DTS-HD
Master Audio are either trademarks or registered trademarks of DTS, Inc. in the United States
and/or other countries. HDMI and the HDMI logo are either trademarks or registered trademarks
of HDMI Licensing LLC in the United States and/or other countries. Other trademarks, registered
trademarks, and trade names may be used in this document to refer to either the entities claiming
the marks and names or their products. Crestron disclaims any proprietary interest in the marks
and names of others. Crestron is not responsible for errors in typography or photography.
Specifications are subject to change without notice. ©2016 Crestron Electronics, Inc.
DMF-TX-4K-SFP DigitalMedia™ SFP+ 4K Fiber Transmitter
Crestron Electronics, Inc. 15 Volvo Drive Rockleigh, NJ 07647
Tel: 800.237.2041 / 201.767.3400
| Fax: 201.767.1903
All brand names, product names and trademarks are the property of their respective owners.
©2016 Crestron Electronics, Inc.
Specifications subject to change without notice. Revised 09/22/16
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