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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

  • Power draw2 W maximum
  • Conversion type3GSDI to HDMI
  • USB connection(1) Mini-B
  • Indicator lightHDMI Indicator: (1) LED, green Power Indicator: (1) LED, blu
  • Power supply12 V DC nominal (6 V to 24 V DC operating range)
  • Spec summaryMaximum 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.

How it compares

Measured against everything we stock in Video & Signal Converters, at today’s prices. Recalculated every night.

Price $215.99
Pricier than about 85% of the 286 comparable items (median $27.99).

Specifications

Product
Brand nameGefen
Model nameEXT-3G-HD-C
Conversion type3GSDI to HDMI
Ports & slots
USB connection(1) Mini-B
Power
Power draw2 W maximum
Power supply12 V DC nominal (6 V to 24 V DC operating range)
Size & build
Product dimensions2.9 in × 1.2 in × 2.3 in (excluding connectors, W × H × D)
Product weight0.3 lb (0.15 kg)
Shipping weight0.57 kg
Package size74 × 58 × 30 mm
More details
Indicator lightHDMI Indicator: (1) LED, green
Power Indicator: (1) LED, blue

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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