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Compact black metal box with BNC input, locking HDMI output, blue and green LEDs, mini USB port, five DIP switches, mounting bracket

Gefen

Gefen EXT-3G-HD-C 3GSDI to HDMI media converter

SKU CH-XY71-RBVX5 MPN EXT-3G-HD-C

Converts 3G-SDI, HD-SDI and SD-SDI signals to HDMI or DVI output at resolutions up to 1080p60 with 8-channel LPCM audio

  • Converter Type3GSDI to HDMI
  • USB Port(1) Mini-B
  • LED IndicatorHDMI Indicator: (1) LED, green Power Indicator: (1) LED, blu
  • Power Consumption2W maximum
  • Power Supply12V DC nominal (6V to 24V DC operating range)
  • SpecificationMaximum Pixel Clock:150 MHz Maximum TMDS Clock: 225 MHz Vide
  • Converts 3G-SDI to HDMI for 1080p60 displays
  • Locking HDMI output connector secures the signal path
  • Wide 6 V–24 V DC input suits mobile power
  • USB Mini-B port enables Syner-G configuration
  • Compact 2.9" × 1.2" × 2.3" enclosure fits tight racks

Pro-video signal bridge

The Gefen EXT-3G-HD-C converts SDI sources to HDMI for broadcast, post-production and live-event workflows. It accepts 3G-SDI Levels A and B, single-link HD-SDI and SD-SDI at up to 1080p60 and delivers a locked HDMI Type A output at 1080p Full HD with YCbCr 4:4:4 or DVI RGB 4:4:4 colour handling.

Mounting kit and Syner-G control

A surface-mounting bracket and ISO 1/4-20 thread let the .3 lb unit sit on a camera rig, rack shelf or Velcro pad without extra hardware. The bundled 12 V DC supply operates from 6 to 24 V, and the Mini-B USB port connects to Gefen Syner-G software for device discovery, configuration, monitoring and firmware upgrades.

DIP-switch setup and power tolerance

Five DIP switches select output mode and SDI format before power-up, so no laptop is required for basic commissioning. The wide DC input range prevents failures when the converter is powered from battery plates or regulated distribution boxes, while the locking power connector resists accidental disconnects in mobile environments.

Highlights

  • Converts 3G-SDI to HDMI for 1080p60 displays
  • Locking HDMI output connector secures the signal path
  • Wide 6 V–24 V DC input suits mobile power
  • USB Mini-B port enables Syner-G configuration
  • Compact 2.9" × 1.2" × 2.3" enclosure fits tight racks

Specifications

BrandGefen
ModelEXT-3G-HD-C
Converter Type3GSDI to HDMI
USB Port(1) Mini-B
LED IndicatorHDMI Indicator: (1) LED, green
Power Indicator: (1) LED, blue
Power Consumption2W maximum
Power Supply12V DC nominal (6V to 24V DC operating range)
SpecificationMaximum Pixel Clock:150 MHz
Maximum TMDS Clock: 225 MHz
Video Input Connector: (1) SDI BNC-type, female
Video Output Connector: (1) HDMI Type A 19-pin, female, locking
Configuration Switches: (5) DIP-type
Power Supply Connector: (1) 3-pin, locking
Operating Temperature: +32 to +122 °F (0 to +50 °C)
Operating Humidity: 5% to 90% RH, non-condensing
Storage Temperature: -4 to +185 °F (-20 to +85 °C)
Storage Humidity: 0% to 95% RH, non-condensing
MTBF: 50000 hours
FeatureConverts SDI to HDMI
Input resolutions up to 1080p60
Output resolutions up to 1080p Full HD
HDMI (YCbCr 4:4:4) or DVI (RGB 4:4:4) output modes
Supports 3G-SDI Levels A and B, Single-Link HD-SDI, and SD-SDI
Supports up to 10 bit color on input and output
Up to LPCM 7.1 audio support
Field configurable via DIP switch settings
Mini USB port for use with Gefen Syner-G for in-field firmware updates
Wide power supply operating range (6V to 24V DC)
Locking power supply connector
1/4-20 industry-standard camera gear attachment thread on bottom
Surface-mountable using the included detachable
Dimensions2.9" x 1.2" x 2.3" (excluding connectors, W x H x D)
Weight0.3 lbs (0.15 kg)
Shipping weight0.57 kg
Package size74 × 58 × 30 mm

Questions about this item

Does the converter need any firmware updates or internal components replaced over time?

No internal parts require replacement; firmware can be updated through the USB Mini-B port using the Gefen Syner-G software suite.

Which specification caps the video chain first during continuous operation — the 150 MHz pixel clock or the 225 MHz TMDS clock?

The 150 MHz maximum pixel clock is the limiting factor for sustained 1080p60 signals.

How much heat or fan noise does the unit produce when powered all day?

It draws a maximum of 2 W, has no fan, and runs silently with only a blue power LED and green HDMI indicator showing activity.

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