4K60 4:4:4 HDMI and RS-232 Receiver over Ultra-Reach MM/SM Fiber Optic

The Kramer 676R is a high-performance HDMI fiber receiver designed for ultra-long distance distribution of 4K @ 60 Hz (4:4:4) audio/video signals. It seamlessly converts optical input from a compatible transmitter into HDMI and RS‑232 outputs. Ideal for large-scale AV installations requiring secure, long-distance signal extension.

Supporting both multimode (up to 3 km) and single-mode (up to 33 km) fiber with included SFP+, the 676R complies with HDMI 2.0 and HDCP 2.2. It incorporates Kramer’s I‑EDIDPro™ intelligent EDID management and CEC-based power-saving control. Its compact, rack-friendly DigiTOOLS® aluminum housing ensures flexible deployment.

Designed for professional environments like government buildings, conference centers, and multi-room setups, the 676R offers near-zero latency AV distribution over long distances.

Key Features

• Resolution: Up to 4096×2160 @ 60 Hz (4:4:4)
• Bandwidth: 18 Gbps (6 Gbps per HDMI channel)
• Fiber Optic: LC connector(s), multimode & single-mode compatible
• SFP+ Module: 10 Gbps IEEE 802.3ae compliant (multimode included)
• Control: Bidirectional RS‑232 via 3‑pin terminal block
• CEC Power Control: Automatic on/off via HDMI linked devices
• I‑EDIDPro™: For automatic HDMI handshaking and plug-and-play setup
• Rack Mount: Rackable in groups of three using DigiTOOLS® bracket
• Indicators: LEDs for power, source, sink, optical link status
• Cooling & Housing: Convection ventilation, aluminum chassis

Technical Specifications

• Dimensions: 4.72″ × 2.81″ × 0.96″ (12.00 × 7.15 × 2.44 cm)
• Weight: 0.5 lb (0.2 kg)
• Video Bandwidth: 18 Gbps
• Max Resolution: 4096×2160 @ 60 Hz (4:4:4)
• HDMI Compliance: HDMI 2.0, HDCP 2.2
• Fiber Reach: 3 km on OM3 multimode; 33 km on OS1 single-mode
• SFP+ Standards: Patent 10 Gbps IEEE 802.3ae; Class 1 Laser
• RS‑232 Baud Rate: 300-115200
• Temperature Range: Operating 0 °C to +40 °C; Storage -40 °C to +70 °C
• Humidity: 10-90% RH non-condensing
• Power Input: 12 V DC, 2 A (380 mA consumption)
• Certifications: UL, CE, RoHS, WEEE, EMC EN 55022/24; IEC 60825‑1/2; IEC 62368‑1
• Housing: Fan-less, aluminum

What's Included

• 676R Receiver unit
• Multimode 10 Gbps SFP+ transceiver
• 12 V DC power adapter + cord
• Mounting bracket set (rack-friendly)
• User documentation & quick-start guide