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Crestron : DM-TX-300N

By: Crestron
The World's Leader for Advanced Home, Campus & Building Control Automation Solutions
Contact us for lowest price (800) 284-2288, (858) 565-1101,, or fax (858) 300-4193
DigitalMedia CAT Transmitter 300N

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 rack-mountable, 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.

DM-TX-300N features include:

  • 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
  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), 1080p60
  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
  Switcher 3x1 combination digital/analog switch, limited audio breakaway[3]
  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
  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
Unbalanced stereo line-level audio input;
UNBALANCED and SPDIF AUDIO IN inputs are mutually exclusive;
Input Level: 2 Vrms maximum;
Input Impedance: 15k Ohms
  VIDEO IN (3) RCA female comprising (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
  Cable Type:
DM-CBL DigitalMedia Cable

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
Controls & Indicators
  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
  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)

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Prices and specifications subject to change without notice.