This is a legacy product

Technical support is available for this product. Availability of repair services should be verified with a technical support agent.

Replaced by:


Type: AV Tuners
Part Number: 5100-001
Size: 8.500 wide x 1.750 high x 8.000 deep
Weight: 1.880
Distribution: AV over RF , Hybrid Systems
Released: May 2015

ATSC-SDI 4 Data Sheet
ATSC-SDI 4 Product Manual
AMX, Crestron and Pronto IR control codes
CR Toolbox 4.4.3

  • ATSC-SDI-4 Front View
  • ATSC-SDI 4 Rear View

More about AV Tuners

Often times it can be useful to have a tuner in your AV installation. Not all displays can tune TV channels; video projectors and monitors do not have built-in TV tuners to receive off-air or cable TV signals. Tuners can also be used to monitor live camera feeds or over the air broadcasts. Presentation room switchers often need a dedicated tuner that can be routed to displays on demand. Contemporary Research has established a reputation for bringing superior tuner technology to the AV market.

About ATSC-SDI 4 HDTV Tuner

The ATSC-SDI 4 features a native HD-SDI port, as well as MPEG-2 and H.264 decoding. This product is controllable via RS-232, IP, and IR commands.

Related Equipment & Software


Contemporary Research offers a variety of product accessories to necessitate or enhance the functionality of AV products.

AV Tuners

Integration-friendly RS-232 controllable HDTV tuners that can receive both digital and analog channels, in ATSC, clear QAM, and NTSC formats.

Software Tools

Free software tools that allow users to maintain, monitor, and update many of their CR products.

Full Description & Specifications

The ATSC-SDI 4 is the first HDTV Tuner that features a native HD-SDI port, as well as MPEG-2 and H.264 decoding. It is controllable via RS-232, IP, and IR commands. An onboard Web page enables remote Web control. A new menu-driven display simplifies setup, and a front-panel USB port makes firmware updates a snap. The new compact enclosure allows mounting of two tuners in a single rack space.

The integral HD-SDI output allows inclusion of 708/608 captioning, choice of PCM stereo or AC-3 audio, and scaled output set to a constant 1080p, 1080i, 720p, or 480i resolution.

A universal TV tuner, the ATSC-SDI 4 can receive both analog and digital channels, in ATSC, NTSC, and clear QAM formats. Using an optional RF switcher, the tuner can switch between Antenna and Cable feeds.

  • Tunes analog and digital channels in ATSC, NTSC, and clear QAM formats
  • An HD-SDI port outputs the tuned program, with captioning and V-Chip data, scaled to a set resolution up to 1080p, or at native resolution
  • Component, and composite video ports, as well as stereo, and digital coax and TOSlink optical audio ports
  • User can set 1080i/720p for 60 or 59.94 Hz, 1080p fixed to 60 Hz, select Consumer or Pro digital audio
  • Dolby® 5.1 or PCM/Variable PCM digital audio formats for digital audio ports
  • HD-SDI selectable to pass through Dolby 5.1 as AC-3 or decode to stereo PCM audio
  • Front-panel text and onscreen menus for tuner setup
  • Web page for remote setup and control
  • Supports dual Air/Cable tuning with optional RF switch
  • 608 and 708 closed captioning embedded in SDI output
  • Internal scaler displays all channels at selected or native resolution
  • Rack-mountable in 1RU, two across
  • Full ASCII 2-way RS-232/Telnet commands, AMX, Crestron, and RTI modules available, discrete IR and Wired IR commands
  • RS-232 can be daisy-chained to control up to 9 tuners from a single RS-232 port, or control any number of tuners via Ethernet
  • Field updatable for control and HD processing firmware via front and rear USB
  • Meets RoHS and California energy-saving standards

Distribution: AV over RF , Hybrid Systems

  • Cable/RF input, switchable with optional RF-AB RF A-B Switch
  • Type: ATSC, NTSC and Clear QAM
    • DTV Standards: (1080i/720p/480p/480i)
  • Aspect Ratio: Adjustable, variety of modes for 16:9 and 4:3 broadcasts
  • Captioning: Analog and Digital, set by program for size, font, and attributes
  • Favorites: Favorite channel menu
  • Lock: Parental option for channels and/or rating

  • On-Screen: Displays on-screen analog and digital captioning on all video ports.
  • Captioning Data: SDI outputs 708 captioning for HD-SDI, 608 for 480i
  • (changing SDI output from native refresh rate may affect captioning data)
  • Component port does not have the ability to carry captioning data.
  • Captioning data from analog and digital channels will be expressed as Line 21 captioning on the composite video port.

Front Panel:
  • Power, Menu, Setup and Select buttons
  • Up and Down (Channel Up and Down) buttons
  • Left and Right (Volume Up and Down) buttons
  • Text Display, white text on blue LCD:
    • Top line indicates channel number and name
    • Lower line shows Input/Output resolution of current channel, and Air/Cable tuning
  • Mini USB Port for S37 firmware updates

Back Panel:
  • RF Input: Air/Cable, ‘F’, female, 75 ohm impedance, -10 to 25 dBmV typical
    • Supports dual Cable and Air tuning with optional RF-AB RF A-B Switch
    • Digital RF tuning for improved sensitivity
  • Digital Outputs: Select Consumer or Pro digital audio
    • HD-SDI: Tuned program with embedded stereo PCM or Dolby 5.1 audio, Dolby 5.1 selectable to pass through as AC-3 when audio set to AC-3 or decoded to stereo AES audio when set to PCM
      • Embedded 608/708 captioning
      • Native channel resolution or scale to fixed resolution (1080p/1080i/720p/480i)
      • Set HD refresh rates to 1080p 60Hz, 1080i/720p 59.94 or 60 Hz
    • Digital Audio: Coax and TOSlink optical output, Dolby 5.1, PCM, or PCM variable
  • AV Outputs: Simultaneous with SDI output
    • Component: RCA Pr, Pb, Y outputs follow SDI settings, up to 1080p
    • Composite Video: RCA female jack, Line 21 Caption Data
    • Audio L and R: 2 stereo RCA female jacks, variable level
  • Control: Ethernet RJ-45 10/100: Telnet/ UDP control, Web pages (option for password protection)
    • RS-232: DB-9 male, RS-232 data link to control system
    • 300 to 19,200 baud (9600 default), 8 data bits, no parity, 1 stop bit
    • IR: 3.5 mm stereo input for external IR sensor or wired IR, discrete codes available
    • Air/Cable: 3.5 mm output to operate the RF-AB RF A-B Switch
  • Power: 2.1mm coaxial jack (inside center conductor positive)
    • 1 A maximum, 11 to 14 VDC, 12 VDC typical
RK1 Product Image

RK1 Rack Mount Kit

The RK1 Rack Mount Kit is the standard single unit rack mounting kit for most Contemporary Research products.