Skip to content

What affects my DMX output?

Explained in (2)

The following affects the DMX output:

  • A crash or a failure – this discontinues DMX output.
  • Show upload – this stops DMX output.
  • Changing the value of a fixture – this changes the DMX output.

Important

In case of a failure or crash, the DMX lines should go off. This is called High-Z.

What happens to the fixtures?

Fixtures have a function called the DMX hold.

What is a DMX hold?

The end-device physically emits the latest value, e.g., the fixture is on or off.

Important

Note:
DMX hold is the function of the end-device only, e.g., a fixture.

How do I set the DMX hold on my end-device?

  • Set it either individually on your end-device – on or off.
  • The end-device goes back to default automatically –off.
  • If you have two individual inputs in your end-device, the DMX input automatically chooses the second input in case of a crash or failure.

Hint

Note:
If your end-device does not support the feature DMX hold, add a DMX booster or splitter featuring DMX hold.

How does the output behave in case of a single console?

If a problem occurs, the console´s DMX outputs should go High-Z.

How do I create backup?

With the grandMA2 system you have a seamless switch between the transmitting console (master) and the back-up console (connected) in case of a failure or crash.

Here are three examples on how to create backup:

  • Use the grandMA2 console as master and the grandaMA2 onPC software version as connected, and DMX nodes for emission of the signal.
  • Use the grandMA2 console as master with a second grandMA2 console as connected, and DMX nodes for emission of the signal.
  • Use the grandMA2 replay unit (RPU) as master together with the grandMA2 onPC software as connected, and DMX nodes for emission of the signal.

Source: key_networking_dmx_output.html (grandMA2 manual v3.9)