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What is a DMX merger?

March 12th, 2013 Posted in EUROLITE, worth knowing Tags: , ,

DMX mergers are used to combine two DMX signales and generate a new output signal. Merger can be used when multiple light consoles are used to control the same light. Commonly used methods to calculate the output signal are:


HTP mode (Highest Takes Precedence, the highest value prevails) is the classical method to combine two DMX signals.

LTP mode (Latest Takes Precedence, the last modified value prevails) is the preferred mode to control movement of intelligent moving lights.

additional opportunities with the EUROLITE DMX Merger:

MERGE mode – The mode allows the unit to combine the output of two DMX sources. In this case, you must set the DMX starting address in the Merge mode by flipping the dip-switch( the 10th dip-switch is not used) which is severed as the starting channel of the source B.

If you like to merge 6 from DMX-signal A and 18 channels from DMX-signal B normally, you can flip dip- switch 1, 2 and 3 to “On” position and the other dip-swichtes to “Off” position. The first 6 channels of the DMX output signal are occupied by the 6 channels from DMX signal A. Channel 7 to 18 are occupied by the 12 channels of DMX signal B. In this way, a new combined signal is created from both DMX signals (1A, 2A, 3A, 4A, 5A, 6A, 7B, 8B, 9B… 18B).

BACKUP mode – As long as the A source is supplying valid DMX data the B source will be locked out. On loss of DMX A the B input is automatically enabled.

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