BELDEN 9842 2 PAIR MODBUS DMX
Belden 9842 is a robust, dual-pair shielded twisted pair cable designed for high-speed data transmission in RS-485, Modbus, and DMX512 lighting control systems. By offering two pairs of 24 AWG stranded tinned copper conductors under a high-coverage dual shield, it allows for simultaneous data handling or redundant signal paths in complex automation environments.
Categories:
BELDEN CABLE / RS 485 Modbus Cable
Product Description
Belden 9842 is the industry standard when an application requires an additional data channel. It provides the same exceptional signal integrity and interference rejection while facilitating more complex network topologies.
Key Technical Specifications
Conductor Construction: Two pairs of 24 AWG (7x32) stranded tinned copper conductors. The stranded design provides the necessary flexibility for DMX cabling, which is frequently moved and coiled in stage and studio environments.
Dielectric/Insulation: Polyethylene (PE) insulation ensures low capacitance, maintaining high-frequency performance over extended cable runs.
Advanced Dual-Shielding:
Beldfoil® Shield: 100% coverage aluminum/polyester foil to block high-frequency RFI (Radio Frequency Interference).
Tinned Copper Braid: 90% coverage braid to mitigate lower-frequency EMI and provide structural integrity.
Outer Jacket: Durable PVC rated for CM (Communication) use, providing a balance of flexibility and flame resistance.
Characteristic Impedance: Maintains a nominal 120 Ohms, essential for the termination requirements of RS-485-based protocols like Modbus and DMX.
Primary Applications
DMX512 Control: Widely used in the entertainment industry to control stage lighting and special effects.
Modbus Networks: A standard choice for industrial controllers and building automation where multiple pairs are required for full-duplex communication or master/slave configurations.
Serial Data Transmission: Suitable for any 2-pair RS-485 application where noise immunity and reliability are paramount.
Key Technical Specifications
Conductor Construction: Two pairs of 24 AWG (7x32) stranded tinned copper conductors. The stranded design provides the necessary flexibility for DMX cabling, which is frequently moved and coiled in stage and studio environments.
Dielectric/Insulation: Polyethylene (PE) insulation ensures low capacitance, maintaining high-frequency performance over extended cable runs.
Advanced Dual-Shielding:
Beldfoil® Shield: 100% coverage aluminum/polyester foil to block high-frequency RFI (Radio Frequency Interference).
Tinned Copper Braid: 90% coverage braid to mitigate lower-frequency EMI and provide structural integrity.
Outer Jacket: Durable PVC rated for CM (Communication) use, providing a balance of flexibility and flame resistance.
Characteristic Impedance: Maintains a nominal 120 Ohms, essential for the termination requirements of RS-485-based protocols like Modbus and DMX.
Primary Applications
DMX512 Control: Widely used in the entertainment industry to control stage lighting and special effects.
Modbus Networks: A standard choice for industrial controllers and building automation where multiple pairs are required for full-duplex communication or master/slave configurations.
Serial Data Transmission: Suitable for any 2-pair RS-485 application where noise immunity and reliability are paramount.
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