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QTX DMX Terminator 120 Ohms - 3-Pin XLR

£299
The RRP is the manufacturer's recommended retail price of the item.
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Description

The QTX DMX terminator is a 3-pin XLR plug with a 120-ohm resistor soldered between pins 2 and 3, designed to terminate the end of a DMX512 lighting control chain. The resistor matches the nominal impedance of DMX cable, absorbing the signal at the end of the run and preventing reflected signals from bouncing back down the chain and causing flickering, data errors or addressing conflicts.

DMX lighting systems operate as a single unidirectional data chain from controller to first fixture, first to second, and so on until the last device in the line. Without a terminator, the signal reaching the end of the chain reflects back along the cable, interfering with the outgoing signal and causing intermittent or erratic fixture behaviour, particularly on longer runs or chains with more than 10-15 fixtures. Adding a terminator to the output socket of the final fixture in the chain stabilises the signal across the entire run.

The QTX terminator plugs directly into any standard 3-pin female XLR socket. It carries no cable or pass-through connection — it is purely an end-of-chain plug. The metal XLR shell provides shielding and strain relief on the resistor connection. For professional touring rigs, venue installations or theatre lighting setups where cable runs exceed 50m or fixture counts go beyond 15 units, a terminator is essential for reliable signal integrity.

Specification
Impedance 120 Ohms
Frequently Asked

When is a DMX terminator needed?

A terminator is required at the end of any DMX512 chain to prevent signal reflection. It is particularly important on runs longer than 50m, chains with more than 15 fixtures, or setups experiencing flickering or intermittent addressing issues.

Does this fit 5-pin XLR systems?

No. This terminator uses a 3-pin XLR connector and is designed for 3-pin DMX systems. For 5-pin DMX chains, a separate 5-pin terminator is required.

Where does the terminator plug in?

The terminator plugs into the DMX output socket of the final fixture in the chain. It does not pass the signal onwards — it is purely an end-of-line plug to absorb the signal.

Can one terminator be used across multiple setups?

Yes. The terminator can be moved between different DMX chains as needed. It is reusable and does not require calibration or configuration for each setup.

Shipping & Returns

Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

To arrange a return, call us on 020 8149 5199 or use our contact page.

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    Description

    The QTX DMX terminator is a 3-pin XLR plug with a 120-ohm resistor soldered between pins 2 and 3, designed to terminate the end of a DMX512 lighting control chain. The resistor matches the nominal impedance of DMX cable, absorbing the signal at the end of the run and preventing reflected signals from bouncing back down the chain and causing flickering, data errors or addressing conflicts.

    DMX lighting systems operate as a single unidirectional data chain from controller to first fixture, first to second, and so on until the last device in the line. Without a terminator, the signal reaching the end of the chain reflects back along the cable, interfering with the outgoing signal and causing intermittent or erratic fixture behaviour, particularly on longer runs or chains with more than 10-15 fixtures. Adding a terminator to the output socket of the final fixture in the chain stabilises the signal across the entire run.

    The QTX terminator plugs directly into any standard 3-pin female XLR socket. It carries no cable or pass-through connection — it is purely an end-of-chain plug. The metal XLR shell provides shielding and strain relief on the resistor connection. For professional touring rigs, venue installations or theatre lighting setups where cable runs exceed 50m or fixture counts go beyond 15 units, a terminator is essential for reliable signal integrity.

    Specification
    Impedance 120 Ohms
    Frequently Asked

    When is a DMX terminator needed?

    A terminator is required at the end of any DMX512 chain to prevent signal reflection. It is particularly important on runs longer than 50m, chains with more than 15 fixtures, or setups experiencing flickering or intermittent addressing issues.

    Does this fit 5-pin XLR systems?

    No. This terminator uses a 3-pin XLR connector and is designed for 3-pin DMX systems. For 5-pin DMX chains, a separate 5-pin terminator is required.

    Where does the terminator plug in?

    The terminator plugs into the DMX output socket of the final fixture in the chain. It does not pass the signal onwards — it is purely an end-of-line plug to absorb the signal.

    Can one terminator be used across multiple setups?

    Yes. The terminator can be moved between different DMX chains as needed. It is reusable and does not require calibration or configuration for each setup.

    Shipping & Returns

    Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

    Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

    To arrange a return, call us on 020 8149 5199 or use our contact page.