Belden 1694ELW 75 Ohm SDI Coaxial Cable - LSZH Jacket, 18 AWG Solid Copper

This Belden 1694ELW is a precision-engineered 75 Ohm SDI coaxial cable built for professional broadcast and video applications. It delivers exceptional signal integrity for high-definition and ultra-high-definition serial digital interface (SDI) signals, supporting data rates from HD-SDI to 12G-SDI. With its low-smoke, zero-halogen (LSZH) jacket, it is the safe choice for installations in public or confined spaces where fire safety is paramount.

Advantages

The 1694ELW combines Belden's renowned broadcast-grade performance with enhanced safety. Its gas-injected foam HDPE dielectric ensures low signal loss and high velocity of propagation, while the dual shield construction (Duofoil® plus tinned copper braid) provides excellent protection against electromagnetic interference. The solid bare copper conductor guarantees superior conductivity and long-term reliability.

Suitable for

• Broadcast studios and outside broadcast (OB) vans
• Video production and post-production facilities
• Security and surveillance systems requiring HD-SDI transmission
• Medical imaging and other high-bandwidth video applications
• Any installation where LSZH jacket is required for safety

Key specifications

• Impedance: 75 Ohm
• Conductor: 18 AWG solid bare copper (1.02 mm)
• Dielectric: Gas-injected foam HDPE
• Shielding: Duofoil® + tinned copper braid (95% coverage)
• Jacket: LSZH (Low Smoke Zero Halogen), outer diameter 6.96 mm
• Capacitance: 53.1 pF/m
• Velocity of Propagation: 82%
• Operating Temperature: -30°C to +75°C
• Attenuation: 19.6 dB/100m @ 1 GHz, 36.5 dB/100m @ 3 GHz, 54.0 dB/100m @ 6 GHz
• Return Loss: >23 dB (5 MHz - 1.6 GHz)
• CPR Class: Eca

Recommendations

For optimal performance, use appropriate BNC connectors and ensure proper termination. This cable is ideal for permanent installations where fire safety is a concern. Always respect the minimum bend radius (35 mm) to maintain signal quality.