AJA Hi5-12G-R-ST – 12G-SDI to HDMI 2.0 Converter with ST Fiber Receiver

AJA Hi5-12G-R-ST – 12G-SDI to HDMI 2.0 Converter with ST Fiber Receiver

The AJA Hi5-12G-R-ST is a professional 12G-SDI to HDMI 2.0 converter designed to connect 4K/UltraHD video sources to HDMI displays for high-quality monitoring. Featuring an integrated single-channel ST fiber receiver, it accepts 12G-SDI signals over fiber and converts them to HDMI 2.0 while preserving image quality and supporting high frame rates up to 60p.

Ideal for broadcast facilities, live production, postproduction, and professional video monitoring, the Hi5-12G-R-ST supports 12-bit workflows, HDR10 metadata, and HLG over HDMI. A reclocked 12G-SDI loop output provides a convenient connection for confidence monitoring or passing the signal along an existing SDI pipeline.

Key Features

• 12G-SDI to HDMI 2.0 conversion: Connect professional 4K/UltraHD video sources to HDMI 2.0 displays.
• ST fiber receiver included: Receive 12G-SDI video over single-mode fiber using the included single-channel ST SFP receiver.
• 4K/UltraHD up to 60p: Supports high-frame-rate video for smooth, detailed monitoring.
• 12-bit workflow support: Maintains support for professional high-bit-depth video workflows.
• HDR support: Generates HDR10 metadata in accordance with HDMI 2.0b and CTA-861-G and supports HLG over HDMI.
• Reclocked SDI loop output: Pass the incoming SDI signal to another device or use it for SDI confidence monitoring.
• Long-distance signal transport: Use fiber connectivity to extend 4K video signals beyond typical coaxial cable distances.
• USB configuration: Configure the converter using AJA Mini-Config software on a PC or Mac.
• Flexible power: Operates on 5–16 VDC and includes a universal power supply.
• Five-year warranty: Includes AJA's five-year product warranty.

12G-SDI Fiber to HDMI 2.0 Conversion for 4K Monitoring

The AJA Hi5-12G-R-ST provides a practical way to monitor professional 4K/UltraHD video on displays equipped with HDMI 2.0 inputs. Its ST fiber receiver enables long-distance signal transport from compatible fiber-based video infrastructure, making it suitable for broadcast control rooms, production facilities, and remote monitoring locations.

With support for high frame rates up to 60p and 12-bit workflows, the converter helps maintain high-quality video presentation while connecting professional SDI systems to modern HDMI displays.

HDR10 and HLG Support

For workflows that require high dynamic range, the Hi5-12G-R-ST generates HDR10 metadata according to HDMI 2.0b and CTA-861-G specifications and supports Hybrid Log-Gamma (HLG) over HDMI.

These capabilities help provide appropriate HDR signaling when connecting compatible professional video sources to HDR-capable monitoring displays.

Reclocked 12G-SDI Loop Output

In addition to HDMI conversion, the Hi5-12G-R-ST features a reclocked SDI loop output. This allows the incoming signal to continue to another SDI device or support a separate confidence-monitoring connection without disrupting the primary HDMI monitoring path.

This flexibility makes the converter useful in multi-device video environments where operators need to monitor a signal while maintaining an existing SDI distribution workflow.

USB Configuration with AJA Mini-Config

Use the USB connection and AJA Mini-Config software to configure the Hi5-12G-R-ST from a compatible PC or Mac. Mini-Config provides a convenient way to manage supported device settings as part of installation and system maintenance.

Applications

The AJA Hi5-12G-R-ST is suited to a variety of professional video applications, including:

• 4K/UltraHD broadcast monitoring
• Live production and control room displays
• Fiber-based video transport and monitoring
• Postproduction and editing suites
• HDR10 and HLG display monitoring
• SDI confidence monitoring
• Professional AV systems using 12G-SDI sources and HDMI 2.0 displays

Warranty

The AJA Hi5-12G-R-ST includes a five-year warranty from AJA, providing long-term support for professional video installations.

Connect fiber-based 12G-SDI video sources to HDMI 2.0 displays with the AJA Hi5-12G-R-ST, a compact conversion solution for high-quality 4K/UltraHD monitoring in professional broadcast, production, and AV workflows.

• Video Formats
  • (4K) 4096x2160p
  • (UltraHD) 3840x2160p
  • (2K) 2048x1080p
  • (HD) 1920x1080p
  • (HD) 1920x1080i
  • (HD) 1280x720p
  • (SD) 720x576i
  • (SD) 720x480i
  • Note: Raster and Frame Rate Dependent, please see Hi5-12G Video Formats in the Download / Documents section of the website product page.
• Video Input Digital
  • 1x 12G-SDI BNC, SMPTE-259/292/424/2081/2082
  • YCbCr 4:2:2/4:4:4
  • RGB 4:4:4, SMPTE or Full level
  • 8, 10, 12-bit
  • Two Sample Interleave (2SI) 4K/UltraHD source mapping
  • 1x 12 Gb SDI
  • (4K) 4096x2160p 23.98, 24, 25, 29.97, 30, 47.95, 48, 50, 59.94, 60
  • (UltraHD) 3840x2160p 23.98, 24, 25, 29.97, 30, 50, 59.94, 60
  • 1x 6 Gb SDI
  • (4K) 4096x2160p 23.98, 24, 25, 29.97, 30
  • (UltraHD) 3840x2160p 23.98, 24, 25, 29.97, 30
  • 1x 3 Gb SDI (Level A or B Dual Link)
  • (2K) 2048x1080p 23.98, 24, 25, 29.97, 30, 47.95, 48, 50, 59.94, 60
  • (2K) 2048x1080PsF 23.98, 24, 25, 29.97, 30
  • (HD) 1920x1080p 23.98, 24, 25, 29.97, 30, 50, 59.94, 60
  • (HD) 1920x1080PsF 23.98, 24, 25, 29.97, 30
  • (HD) 1920x1080i 50, 59.94, 60
  • (HD) 1280x720p* 50, 59.94, 60
  • 1x 1.5 Gb SDI
  • (2K) 2048x1080p 23.98, 24, 25, 29.97, 30
  • (2K) 2048x1080PsF 23.98, 24, 25, 29.97, 30
  • (HD) 1920x1080p 23.98, 24, 25, 29.97, 30
  • (HD) 1920x1080PsF 23.98, 24, 25, 29.97, 30
  • (HD) 1920x1080i 50, 59.94, 60
  • (HD) 1280x720p 50, 59.94, 60
  • 1x 270 Mb SDI
  • (SD) 625i 50
  • (SD) 525i 59.94
  • *1280x720p is Level A Only
• Input Signal Selection -Hi5-12G-R and Hi5-12G-TR Only
  • 1x 12G-SDI BNC, SMPTE-259/292/424/2081/2082
  • 1x 12G-SDI Fiber LC connector, SMPTE 297/259/292/424/2081/2082
  • Nominal Wavelength: Rx 1260 nm (min), 1620 nm (max)
  • Optical Sensitivity: -10 dBm (min 12 Gbps), -14 dBm (min 3 Gbps)
  • Overload Power: -2 dBm (min)
• Input Signal Selection - Hi5-12G-R-ST Only
  • 1x 12G-SDI BNC, SMPTE-259/292/424/2081/2082
  • 1x 12G-SDI Fiber ST connector, SMPTE 297/259/292/424/2081/2082
  • Nominal Wavelength: Rx 1260 nm (min), 1620 nm (max)
  • Optical Sensitivity: -10 dBm (min 12 Gbps), -14 dBm (min 3 Gbps)
  • Overload Power: -2 dBm (min)
• Video Output Digital
  • 1x HDMI Type A connector*, HDMI v2.0b
  • HDR infoframe generation with pass-through or override for Colorimetry and Transfer Characteristic
  • YCbCr 4:2:2/4:4:4/4:2:0
  • RGB 4:4:4, SMPTE or Full level
  • 24, 30, or 36 Bits Per Pixel  (HFR 4K/UltraHD 4:4:4 limited to 24 BPP)
  • (4K) 4096x2160p 23.98, 24, 25, 29.97, 30, 47.95, 48, 50, 59.94, 60
  • (UltraHD) 3840x2160p 23.98, 24, 25, 29.97, 30, 47.95, 48, 50, 59.94, 60
  • (2K) 2048x1080p 23.98, 24, 25, 29.97, 30, 47.95, 48, 50, 59.94, 60
  • (HD) 1920x1080p 23.98, 24, 25, 29.97, 30, 50, 59.94, 60
  • (HD) 1920x1080i 50, 59.94, 60
  • (HD) 1280x720p 50, 59.94, 60
  • (SD) 720x576i 50
  • (SD) 720x480i 59.94
  • *If a connected monitor doesn’t support HDMI protocol the unit automatically switches to DVI protocol (which does not pass audio)
• Audio Pass-Through Formats
  • PCM
  • Dolby Digital (AC-3)
  • Dolby Digital Plus (E-AC-3), including Atmos Immersive Sound (JOC)
• Video Output Digital - Additional for Hi5-12G-TR Only
  • 1x 12G-SDI Fiber LC connector, SMPTE 297/259/292/424/2081/2082
  • Nominal Wavelength: Tx 1260 nm (min), 1310 nm (typ), 1360 nm (max)
  • Optical Power: -5 dBm (min), 0.5 dBm (max)
  • Extinction Ratio: 5.4 dB (min)
• Audio Input Digital: SDI embedded audio, 24-bit (SD limited to 20-bit), 16-channel
• Audio Output Digital: HDMI embedded audio, 24-bit, 8-channel
• Audio Output Analog: 2x RCA style connector, 2-channel -10dBu (nominal)
• User Interface: USB port used with supplied cable and Mini-Config software application to configure and view device status via Mac or Windows
• Size (w x d x h): 4.6" x 4.02" x 0.9" (116.84 x 102.11 x 22.86 mm)
• Weight: 0.5 lb (0.3 kg)
• Power
  • 5-16VDC regulated, 11 watts, power supply required included with purchase
  • AC Adapter: 100-240VAC, 50/60 Hz, universal input
• Safe Operating Temperature: 0 to 40 C (32 to 104 F)*
• Safe Storage Temperature (Power OFF): -40 to 60 C (-40 to 140 F)
• Operating Relative Humidity: 10-90% noncondensing
• Operating Altitude: <3,000 meters (<10,000 feet)

• AJA Hi5-12G-R-ST – 12G-SDI to HDMI 2.0 Converter with ST Fiber Receiver
• Universal power supply
• Warranty: Limited 5-Year Manufacturer Warranty