HDMI 1.3 to 3GSDI Converter



Replaced by: Gefen EXT-HD-3G-C
Alternative options: Contact Us

 The Gefen HDMI1.3-2-3GSDI Converter takes an HDMI input signal and converts it to SDI/HD-SDI/3G-SDI output format (either SDI standard definition, HD-SDI high-definition, or 3G-SDI high-definition with ultra high bandwidth). Converted HDMI signals are mirrored onto two identical SDI BNC outputs. A single pair of RCA-type L/R analog audio output jacks enables monitoring of embedded HDMI audio via an external analog amplifier or receiver. LED indicators on the front and bottom of the unit provide HDMI and SDI signal status and troubleshooting assistance in the event of errors.

 An HDMI source is connected to the HDMI input on the HDMI 1.3 to 3GSDI Converter. An SDI device is connected to the SDI outputs on the Converter. The included power supply is connected to the HDMI 1.3 to 3GSDI Converter. When the HDMI source and the HDMI 1.3 to 3GSDI Converter are connected and powered on, audio/video signals are converted to the proper format on connected A/V output devices (displays, audio receivers). DIP switches on the underside of the unit allow presetting critical functions inside the Converter such as 3G Mapping Level, Test Pattern and RGB Range. Three (3) LED indicators on the front panel indicate the presence of data rates up to 3G-SDI, the presence of locked-on HDMI, and power to the unit. Note: In accordance with the HDCP specification, encrypted HDMI signals will not be converted to SD/HD/3G-SDI formats. PC video input formats are not supported. This device does not scale video. Only SMPTE formats are supported when using the SDI outputs; PC formats will not be converted.


  • 12-bit color depth for greater precision and dynamic range (HDMI input only)
  • 10-bit color depth on the SDI output under all conditions (including 3G-SDI output)
  • Maximum output resolutions 2048x1080/24 (2K) and 1920x1080p/60 (1080p)
  • Supports up to 1080p full HD
  • Supports 8 channel LPCM, AC3 Dolby™, and DTS™ audio
  • Supports HDMI Deep Color
  • Two SDI outputs (mirrored)
  • Supports 3G-SDI Level A for 1080p format only
  • Supports 3G-SDI Level B (2 x SMPTE 292M HD-SDI) for 1080p format only
  • Analog audio L/R RCA jacks allow monitoring of the HDMI input source audio in 2-channel mode (provided no HDCP is present)
  • Color bar test pattern generator at 720p/60 Hz
  • Field-upgradable
  • DIP switches and LED's on bottom panel for setting system options







  • Maximum resolution output: 2048x1080 / 24 Hz
  • Input Video Bandwidth: 225MHz
  • Output formats: SDI (SMTP 259M) up to 360Mbps, HD-SDI (SMTP 292M) up to 1.485Gbps, 3G-SDI (SMTP 424M/425M) up to 3.0Gbps
  • Video Input Connector: (1) HDMI Type A 19-pin, female
  • Video Output Connectors: (2) SDI (BNC, female)
  • USB Port: (1) Type B, female (for firmware upgrades)
  • Audio Connectors: (1) L/R analog audio (2 x RCA, female)
  • Power Supply: 5V DC, Locking
  • Power Consumption: 2.5W (max.)
  • Dimensions: 7.5" W x 1.1" H x 3.5" D
  • Shipping Weight: 3 lbs