Kramer 690R 2‑Channel 3G HD‑SDI Fiber Optic Receiver

The Kramer 690R is a high-performance fiber-optic receiver that converts dual 3G HD‑SDI video signals from single‑mode fiber back to coaxial SDI, supporting signal extension up to 10 km. Ideal for broadcast, digital signage, and control-room applications.

Featuring automatic equalization, Kramer’s re‑Klocking™ technology, and compliance with multiple SMPTE standards (259M, 344M, 292M, 424M), the 690R ensures pristine SDI signal integrity with virtually no latency. Compact and reliable, it fits within Kramer’s TOOLS™ form factor and supports rack mounting via an optional rack adapter.

Key Features

• Inputs: 2× single‑mode (9/125) LC fiber connectors
• Outputs: 2× SD/HD/3G HD‑SDI BNC connectors
• Max Data Rate: Up to 3 Gbps per channel
• Extension Range: Up to 10 km via single‑mode fiber
• Kramer Equalization & re‑Klocking™: Supports 200 m (SD‑SDI) and 100 m (3G‑SDI) coax extension
• Support Standards: SMPTE‑259M/344M/292M/424M
• Laser Safety: IEC 60825‑1, FDA 21 CFR 1040 Class 1
• Form Factor: Compact TOOLS™ enclosure (2.4″ × 2.0″ × 0.9″)
• Power: 5 V DC, 350 mA via included adapter
• Rack Mount Option: Compatible with RK‑4PT 1U rack adapter

Technical Specifications

• Dimensions: 2.4″ × 2.0″ × 0.9″ (6.2 × 5.2 × 2.4 cm)
• Weight: 0.31 lb (0.14 kg)
• Inputs: Dual LC single‑mode fiber (9/125)
• Outputs: 2× SD‑SDI/HD‑SDI/3G‑SDI BNC
• Max Bandwidth: 3 Gbps per channel
• Fiber Range: Up to 10 km
• Coax Equalization: 200 m SD‑SDI; 100 m 3G‑SDI
• Power Consumption: 5 V DC, 350 mA
• Operating Temp: 0 - 40 °C; Storage: -40 - 70 °C; RH: 10-90% non‑condensing
• Certifications: IEC 60825‑1, FDA 21 CFR 1040 Class 1 laser

What's Included

• 690R receiver unit
• 5 V DC power adapter