Crestron | DM-TX-300N | Product Specifications: DM-TX-300N

DigitalMedia™ CAT Transmitter 300N
>> DigitalMedia™ CAT transmitter and
multimedia interface
>> Built-in 3x1 AV switcher with front panel
input selection and audio-breakaway[3]
>> QuickSwitch HD® technology achieves
fast, reliable switching
>> DM® CAT output supports up to 450 ft
(137 m) cable length[1]
>> Provides HDMI®, DVI, RGB, and multi-format
analog video inputs
>> Also supports DisplayPort Multimode sources[4]
>> Includes balanced/unbalanced analog and S/PDIF audio inputs
>> Includes a local HDMI monitor output
>> Handles HD video with HDCP
>> Handles Dolby Digital®, DTS®, and uncompressed 7.1 linear
PCM audio
>> Detects and reports detailed video and audio input information
>> Performs automatic AV signal format management via EDID
>> Provides a 10/100 Ethernet connection
>> Enables device control via CEC, IR, RS-232, and Ethernet
>> Allows quick, easy setup and diagnostics
>> Single-space 19-inch rack-mountable
>> Includes external universal power pack
The DM-TX-300N is a DM® CAT transmitter and switcher that offers a
versatile interface for computers and high-definition AV sources as part
of a complete Crestron® DigitalMedia™ system. Compact and rackmountable, the DM-TX-300N connects to the head end or display location
using a single Crestron DM cable. It provides HDMI®, DVI, VGA, S/PDIF, and
analog video and audio inputs, plus Ethernet, RS-232, and IR control ports
for a total connectivity solution.
Installed in a stationary podium or equipment rack, the DM-TX-300N
provides an ideal solution for integrating rack-mounted sources, switchers,
and AV receivers into the DigitalMedia system. Mounted in a movable
lectern or AV cart, or just as a portable device, it affords a simple means
for connecting laptops, cameras, and other portable sources at any
number of wall plates and floor boxes throughout a conference center or
auditorium, requiring just a single DM CAT connection (MP-WP185) at
each location.
As the leader in HDMI and control system technologies, Crestron developed
DigitalMedia (DM) to deliver the first complete HD AV distribution system to
take HDMI to a higher level. DigitalMedia allows virtually any mix of HDMI
and other AV sources to be distributed throughout a home, office, school,
or virtually any other facility. DigitalMedia CAT distributes uncompressed
digital video and audio signals up to 450 feet (137 m) using Crestron
DM cable[1].
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Multimedia Computer/AV Interface
The DM-TX-300N provides versatile switching among three different video
and audio sources. The inputs can be selected manually from the front
panel or through a Crestron control system. Inputs include:
•• HDMI — Supports HD 1080p60 video and WUXGA computer signals
with HDCP and multi-channel lossless audio. Also handles DisplayPort
Multimode signals using an appropriate adapter or interface cable.
•• DVI-I — This input handles DVI and analog RGB signals up to WUXGA
1920x1200 pixels, as well as analog video up to 1080p60[2]. A stereo
audio input is included to accommodate the analog audio signal from a
balanced or unbalanced line-level source.
•• Video — This multi-format video input accepts analog YPbPr
component video signals up to 1080p60, as well as standard definition
NTSC/PAL composite and S-Video. A choice of S/PDIF digital audio or
stereo unbalanced line-level audio inputs is included[3c].
Note: Audio breakaway capability enables virtually any audio input to be
used with any video input.[3]
A single DM CAT output is provided for connection to a DM switcher or
receiver.[1] Used with a single DM CAT Receiver/Room Controller and
optional Crestron Control System, the DM-TX-300N affords a simple
solution for extending a multimedia computer or AV signal to a single
display up to 450 feet (137 m) away[1]. As part of a larger system using a
DM-MD series switcher, multiple DM-TX-300Ns may be installed to enable
the distribution of several sources at different locations to feed multiple
displays throughout any room or larger facility.
An HDMI output is also included to feed a local monitor. The HDMI output
may be set to follow the DM output or to provide a constant pass-through
signal from the DVI-I input.
EDID Format Management
The DM-TX-300N allows for management of the EDID (Extended Display
Identification Data) information that passes between the display devices
and input sources in the system. Using Crestron Toolbox™ software,
the format and resolution capabilities of each device can be assessed
and managed through the DM-TX-300N, ensuring reliable operation by
instructing sources to output only the resolutions and formats that can be
handled by the displays and system wiring.
DM-TX-300N DigitalMedia™ CAT Transmitter 300N
DM-TX-300N – Front and Rear Views
LAN Connectivity
Along with high-definition AV and control, DigitalMedia also integrates
high-speed Ethernet networking for a total signal distribution solution. The
DM-TX-300N includes a 10/100 Ethernet port, providing a convenient LAN
connection for a local network device.
Embedded Device Control
The primary objective of every Crestron system is to enable precisely the
control desired for a seamless user experience. The DM-TX-300N includes
built-in IR, RS-232, and Ethernet control ports to allow programmable
control of the devices connected to it. But, it can also provide an alternative
to such conventional control methods by harnessing the CEC (Consumer
Electronics Control) signal embedded in HDMI. Through its connection to
the control system, the DM-TX-300N provides a gateway for controlling the
connected source device right through the HDMI connection, potentially
eliminating the need for any dedicated control wires or IR emitters.
Compact and Versatile
The DM-TX-300N is designed to be placed on a shelf or mounted in an
equipment rack or lectern. It is compact enough to fit inside a presentation
lectern or beneath a table. An array of indicators on the front of the
DM-TX-300N provides for easy setup and troubleshooting. Advanced
configuration is enabled through Crestron Toolbox software.
A Digital Upgrade for Legacy Systems
The DM-TX-300N also affords a perfect signal converter for integrating
DigitalMedia with analog-based systems like Crestron MPS, QuickMedia®,
and the CEN-RGBHV Series. A simple HD15 VGA cable connected between
the output of an MPS system and the DVI-I input of the DM-TX-300N
allows every RGB, component, S-Video, and composite video input on the
MPS to be converted to DigitalMedia[2]. Analog audio is converted similarly
through a balanced stereo audio cable.
Please refer to the DigitalMedia Resources Webpage at for additional design tools and
reference documents.
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Switcher: 3x1 combination digital/analog switch, Crestron
QuickSwitch HD®
Input Signal Types: HDMI®, DisplayPort Multimode[4], DVI, RGB,
component (YPbPr)[2], S-Video (Y/C)[2], composite[2]
Output Signal Types: DM® CAT (DigitalMedia™ over twisted-pair
copper wire), HDMI, DVI[4]
Formats: HDMI, DVI, HDCP content protection support, computer up to
UXGA/WUXGA, HD up to 1080p60, NTSC or PAL
Input Resolutions, HDMI & DVI, Progressive: 640x480@60Hz,
720x480@60Hz (480p), 720x576@50Hz (576p), 800x600@60Hz,
848x480@60Hz, 852x480@60Hz, 854x480@60Hz, 1024x768@60Hz,
1024x852@60Hz, 1024x1024@60Hz, 1280x720@50Hz (720p50),
1280x720@60Hz (720p60), 1280x768@60Hz, 1280x800@60Hz,
1280x960@60Hz, 1280x1024@60Hz, 1360x768@60Hz,
1365x1024@60Hz, 1366x768@60Hz, 1400x1050@60Hz,
1440x900@60Hz, 1600x900@60Hz, 1600x1200@60Hz,
1680x1050@60Hz, 1920x1080@24Hz (1080p24), 1920x1080@25Hz
(1080p25), 1920x1080@50Hz (1080p50), 1920x1080@60Hz (1080p60),
1920x1200@60Hz, 2048x1080@24Hz, 2048x1152@60Hz, plus any other
resolution allowed by HDMI up to 165MHz pixel clock
Input Resolutions, HDMI & DVI, Interlaced: 720x480@30Hz (480i),
720x576@25Hz (576i), 1920x1080@25Hz (1080i25), 1920x1080@30Hz
(1080i30), plus any other resolution allowed by HDMI up to 165MHz
pixel clock
Input Resolutions, RGB: 640x480@60Hz, 720x480@60Hz
(480p), 720x576@50Hz (576p), 800x600@60Hz, 848x480@60Hz,
1024x768@60Hz, 1280x720@50Hz (720p50), 1280x720@60Hz (720p60),
1280x768@60Hz, 1280x800@60Hz, 1280x960@60Hz, 1280x1024@60Hz,
1360x768@60Hz, 1366x768@60Hz, 1400x1050@60Hz, 1440x900@60Hz,
1600x1200@60Hz, 1680x1050@60Hz, 1920x1080@50Hz (1080p50),
1920x1080@60Hz (1080p60), 1920x1200@60Hz, 2048x1152@60Hz
Input Resolutions, Component: 480i, 576i, 480p, 576p, 720p50, 720p60,
1080p24, 1080i25 (1125 lines), 1080i30, 1080p30, 1080p50 (1125 lines),
Input Resolutions, Composite and S-Video: 480i, 576i
Output Resolutions: Matched to inputs
Analog-To-Digital Conversion: 10-bit 165 MHz per each of 3 channels
DM-TX-300N DigitalMedia™ CAT Transmitter 300N
Switcher: 3x1 combination digital/analog switch, limited audio
Input Signal Types: HDMI, DisplayPort Multimode[4], S/PDIF coaxial,
analog stereo
Output Signal Types: DM CAT, HDMI
Formats, HDMI & SPDIF: Dolby Digital®, Dolby Digital EX, DTS®, DTS-ES,
DTS 96/24, 2ch PCM
Formats, HDMI only: Up to 8ch PCM
Formats, Analog: Stereo 2-channel
Analog-To-Digital Conversion: 24-bit 48 kHz
Performance (analog): Frequency Response: 20Hz to 20kHz ±0.75dB
S/N Ratio: >90dB, 20Hz to 20kHz A-weighted
THD+N: <0.05% @ 1kHz
Stereo Separation: >90dB
DigitalMedia: DM CAT, DMNet®, HDCP management, EDID format
management, CEC
Ethernet: 10/100 Mbps, auto-switching, auto-negotiating, auto-discovery,
full/half duplex, DHCP
HDMI OUT: (1) 19-pin Type A HDMI female;
HDMI digital video/audio output, also supports DVI[4];
Carries same audio and video signals as DM OUT, or same signal as
DVI-I input
DVI-I IN: DVI-I female (or DB15HD female via adapter included);
DVI, RGB (VGA), component, S-Video, or composite video input[2];
Analog Formats: RGBHV, RGBS, RGsB, YPbPr, Y/C, NTSC, PAL;
Analog Input Levels: 0.5 to 1.5 Vp-p with built-in DC restoration;
Analog Input Impedance: 75 Ohms;
Analog Sync Input Type: Autodetect RGBHV, RGBS, RGsB, YPbPr;
Analog Sync Input Level: 3 to 5 Vp-p;
Analog Sync Input Impedance: 1k Ohms
AUDIO IN (BALANCED): (1) 5-pin 3.5mm detachable terminal block;
Balanced/unbalanced stereo line-level input;
Balanced Input Level: 4 Vrms maximum;
Unbalanced Input Level: 2 Vrms maximum;
Input Impedance: 24k Ohms balanced/unbalanced
VIDEO IN: (3) RCA female;
Comprises (1) auto-sensing multi-format analog video input;
Signal Types: Component (YPbPr), S-Video (Y/C), or composite;
Input Level: 1 Vp-p nominal;
Input Impedance: 75 Ohms nominal
HDMI IN: (1) 19-pin Type A HDMI female;
HDMI digital video/audio input;
Also supports DisplayPort Multimode[4]
DM OUT, D & M: (1) DM CAT output composed of (2) 8-pin RJ45
female, shielded; Connects to DM CAT input of a DM switcher, receiver/
room controller, or other DM device via DM-CBL cable[1]
DM OUT, 24ABG: (1) 4-pin 3.5mm detachable terminal block, DMNet port;
Connects to DMNet port of a DM switcher, receiver/room controller, or
other DM device via DM-CBL cable[1];
Note: “24” terminal must be connected only to dedicated power pack,
model PW-2420DUL (included)
IR: (1) 2-pin 3.5mm detachable terminal block, IR/Serial port;
IR output up to 1.1 MHz;
1-way serial TTL/RS-232 (0-5 Volts) up to 19200 baud
COM: (1) 5-pin 3.5mm detachable terminal block;
Bidirectional RS-232 port;
Up to 115.2k baud, hardware and software handshaking support
LAN: (1) 8-wire RJ45 female;
10Base-T/100Base-TX Ethernet port
G: (1) 6-32 screw, chassis ground lug
DM Cable Length
Maximum length without, between, before, or after repeaters:
200 ft (60 m) for 720p, 1080i, 1080p24
200 ft (60 m) for 1024x768 @75Hz
150 ft (45 m) for 1080p60
150 ft (45 m) for 1280x1024 @75Hz
150 ft (45 m) for 1920x1200 @60Hz
125 ft (38 m) for 1600x1200 @60Hz
Maximum total length using up to 2 repeaters:
450 ft (137 m) for 720p, 1080i, 1080p24
450 ft (137 m) for 1024x768 @75Hz
450 ft (137 m) for 1080p60
450 ft (137 m) for 1280x1024 @75Hz
450 ft (137 m) for 1920x1200 @60Hz
375 ft (114 m) for 1600x1200 @60Hz
AUDIO IN, SPDIF: (1) RCA female;
S/PDIF coaxial digital audio input;
SPDIF and UNBALANCED AUDIO IN inputs are mutually exclusive;
Input Impedance: 75 Ohms
Controls & Indicators
Unbalanced stereo line-level audio input;
UNBALANCED and SPDIF AUDIO IN inputs are mutually exclusive;
Input Level: 2 Vrms maximum;
Input Impedance: 15k Ohms
PWR: (1) green LED, indicates operating power supplied via power pack
RESET: (1) recessed miniature pushbutton for hardware reset
DM LINK: (1) green LED, indicates DM link status
CNTRL: (1) red/green dual-color LED, indicates Ethernet connection and
control system communication status
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DM-TX-300N DigitalMedia™ CAT Transmitter 300N
INPUT, HDMI: (1) green LED, indicates HDMI input is selected
INPUT, DVI-I: (1) green LED, indicates DVI-I input is selected
INPUT, VIDEO: (1) green LED, indicates VIDEO input is selected
INPUT, SELECT: (1) pushbutton, toggles through inputs
LAN (rear): (2) LEDs, green LED indicates Ethernet link status, amber LED
indicates Ethernet activity
SETUP (rear): (1) red LED and (1) recessed miniature pushbutton for
Ethernet setup
Power Requirements
Power Pack: 2.5 Amps @ 24 Volts DC;
100-240 Volts AC, 50/60 Hz power pack, model PW-2420DUL included
Temperature: 32° to 104°F (0° to 40°C)
Humidity: 10% to 90% RH (non-condensing)
Heat Dissipation: 95 BTU/hr
Chassis: Metal, black finish, vented top and sides
Faceplate: Metal, black finish with polycarbonate label overlay
Mounting: Freestanding or 1U 19-inch rack-mountable (adhesive feet and
rack ears included)
Height: 1.70 in (44 mm);
1.91 in (49 mm) with feet
Width: 17.03 in (433 mm);
19.00 in (483 mm) with rack ears
Depth: 8.71 in (222 mm)
3.5 lb (1.6 kg)
Available Models
DM-TX-300N: DigitalMedia™ CAT Transmitter 300N
Included Accessories
PW-2420DUL: Desk Top Power Pack 24VDC, 2.5A, Universal
(Qty. 1
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Available Accessories
DM-CBL-NP: DigitalMedia™ Cable, non-plenum
DM-CBL-P: DigitalMedia™ Cable, plenum-rated
DM-CONN-20: DigitalMedia™ Cable Connectors, 20-Pack
DM-DR: DigitalMedia™ CAT Repeater
IRP2: IR Emitter Probe
CNSP-XX: Custom Serial Interface Cable
CBL Series: Crestron® Certified Interface Cables
MP-WP Series: Media Presentation Wall Plates
MPI-WP Series: Media Presentation Wall Plates - International Version
1. For DigitalMedia CAT wiring, use DM-CBL DigitalMedia Cable. Up to two DM CAT Repeaters
(Model DM-DR) may be required. Refer to the Crestron DigitalMedia Design Guide, Doc. #4546
for complete system design guidelines. All wire and cables sold separately.
2. RGB to DVI-A adapter included. In addition to DVI and RGB, the DVI-I input can actually
accept component, composite, and S-Video signals via direct interface to Crestron MPS Series
products, or through an appropriate adapter (not included). However, input sync detection is not
provided for composite or S-Video signal types through the DVI-I connection.
3. Audio breakaway capabilities and limitations: a) SPDIF/UNBALANCED AUDIO IN and BALANCED
AUDIO IN may each be switched freely regardless which video input is selected. b) HDMI
IN audio may be switched freely except when the VIDEO IN input is selected. c) SPDIF and
UNBALANCED AUDIO IN inputs are mutually exclusive. d) Front panel INPUT SELECT control
IN, and HDMI IN audio with HDMI IN video.
4. HDMI IN requires an appropriate adapter or interface cable to accommodate a DisplayPort
Multimode signal. HDMI OUT requires an appropriate adapter or interface cable to
accommodate a DVI signal. CBL-HD-DVI interface cables 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.
Specifications subject to change without notice. Crestron is not responsible for errors in
typography or photography.
The specific patents that cover Crestron products are listed online at:
Crestron, Crestron Toolbox, DigitalMedia, DM, DMNet, QuickMedia, QuickSwitch HD, and the
Crestron logo are either trademarks or registered trademarks of Crestron Electronics, Inc. in the
United States and/or other countries. Dolby Digital is either a trademark or registered trademark
of Dolby Laboratories in the United States and/or other countries. DTS is either a trademark or
registered trademark 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 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. ©2012 Crestron Electronics, Inc.
DM-TX-300N DigitalMedia™ CAT Transmitter 300N
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.
©2012 Crestron Electronics, Inc.
Specifications subject to change without notice. Revised 12/07/12
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