PD-Connex CX108 - 5-pin DMX terminator for lighting networks
The PD-Connex CX108 is an essential accessory for any lighting professional working with the DMX-512 protocol. This terminator with a 5-pin XLR connector is specifically designed to be placed at the end of a DMX chain, ensuring clean, stable, and error-free signal transmission. Its primary function is to eliminate noise and interference caused by signal reflection, a common problem in lighting installations that can lead to erratic equipment behavior, such as flickering, unexpected color changes, or loss of control.
Within a DMX network, the digital signal travels through cables from one device to another. When it reaches the end of the line without proper termination, some of that signal energy "bounces" back along the cable, creating echoes that corrupt the original signal. The CX108 terminator solves this problem at its source by incorporating a 120-ohm resistor that matches the characteristic impedance of DMX wiring. This resistor absorbs the excess signal energy, closing the circuit cleanly and ensuring that each device receives the controller's instructions accurately and reliably.
Main features
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DMX signal termination: Incorporates a 120 ohm resistor to effectively absorb the signal at the end of the chain, preventing reflections and interference.
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5-pin XLR connector: Compatible with professional, theatrical, and event lighting systems that use the 5-pin DMX standard.
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Robust construction: Made with a high-quality metal connector, designed to withstand the demands of continuous use on tours, live events, and fixed installations.
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Easy installation: Its "plug-and-play" design allows for a quick and secure connection to the DMX OUT port of the latest device in the line, without the need for tools.
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Compact design: Its small size and light weight make it easy to transport and store, making it an indispensable component in any lighting tool kit.
Benefits for the lighting professional
Integrating the PD-Connex CX108 terminator into any DMX setup adds a crucial layer of reliability. It eliminates hours of troubleshooting trying to identify why one or more lights aren't responding correctly. By ensuring a clean signal, it protects the integrity of the programming and guarantees that the show runs exactly as designed, without unexpected failures. It's a minimal investment that safeguards the operation of expensive lighting equipment and the quality of any production.
Use cases
Using a DMX terminator like the CX108 is highly recommended in most situations, and becomes critical in:
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Installations with long cable runs: The longer the cable, the greater the likelihood of signal degradation and reflection.
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Chains with multiple devices: In systems with a large number of moving heads, LED PAR lights, lasers or effects machines, signal integrity is crucial.
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Temporary setups and tours: For mobile DJs, bands and event technicians, it ensures reliable operation night after night, regardless of venue conditions.
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Fixed installations: In theaters, television studios, clubs or architectural lighting, it guarantees the long-term stability of the system.
Frequently Asked Questions
What is a DMX terminator and why do I need one?
A DMX terminator is a connector placed at the end of a DMX light string to absorb the signal and prevent it from bouncing along the cable. You need it to prevent problems like flickering or erratic lighting, ensuring a clean signal from the controller reaches all the lights.
At what point in the DMX chain does it connect?
The terminator must always be connected to the DMX output port (DMX OUT) of the last device in the chain. It is the endpoint of the signal line.
What is the difference between a 3-pin and a 5-pin terminator?
The difference lies in the type of XLR connector. The DMX512 standard was originally designed for 5-pin connectors, although in practice only 3 are used (ground, data+, and data-). Many manufacturers use 3-pin connectors because they are more common. This CX108 model has 5 pins and must be used with equipment that has this type of connection.
What specific problems does this terminator solve?
It resolves issues caused by signal reflection, including flickering lights, incorrect colors, unwanted moving head movements, or equipment that stops responding to the DMX controller. Essentially, it stabilizes the entire DMX network.
Is it compatible with any 5-pin DMX equipment?
Yes, it is universally compatible with any device that uses the DMX-512 protocol and has 5-pin XLR connectors, regardless of the brand or type of light fixture.
Project description
Signal terminator for DMX-512 communication networks. Equipped with a 5-pin male XLR connector and an internal 120-ohm resistor for proper line termination. Metal housing for maximum durability. 20 mm outer diameter and weighs 0.03 kg.
