Harman Martin MAC Ultra Performance, User Manual

Adjusting settings via DMX

 23

Adjusting settings via DMX

Certain fixture settings and parameters can be adjusted from the DMX controller on Channel 42, the Fixture 
Control/Settings channel. Commands sent on this channel override any settings entered in the fixture’s 
onboard control menus.

To help you avoid accidentally applying a setting that may disrupt a light show, for example, the commands 
must be held for a certain time before they are applied. For example, the command that turns off the display 
illumination must be held for one second to activate it. The command that resets the fixture must be held for 
five seconds to activate it. The DMX protocol table in this user manual gives details of times required.

Resetting

Either the entire fixture or individual effects can be reset to their initial positions. Resetting individual effects 
can allow on-the-fly recovery if an effect loses its correct position, for example, without having to reset the 
entire fixture.

Illuminating the display

You can set the fixture’s display panel to ON or OFF with a DMX command. This makes it possible to read 
the fixture’s DMX address while the fixture is installed in the rig but black out the display panel during a 
show.

If the display is set to ON via DMX, it will enter sleep mode and black out after a short period of inactivity. To 
bring it out of sleep mode, set the display to ON again via DMX.

Control menu setting overrides

The following fixture settings can be adjusted via DMX, overriding the settings entered in the onboard 
control menus. See under “DMX protocol” on page 25 for details of these settings.

• Dimming curve

• Tungsten emulation

• Pan and tilt speed

• Effect shortcuts, also called parameter shortcuts (effects take shortest route when changing, even if this 

means crossing the open position)

• Focus tracking

• Video tracking

• Fan speed

It is also possible to adjust calibration offsets via DMX. This feature can be useful if you want to fine-tune 
pan, tilt or other effects after fixtures have been installed in a lighting rig, for example.

Adjusting calibration offsets via DMX

You can adjust the home positions of pan, tilt and all the fixture’s effects remotely via DMX by setting custom 
calibration offsets on the Control/Settings DMX channel.

To set a custom offset in the position of an effect:

1. Set the effect to a specific value via DMX (for example, set all the fixtures in a group to DMX value 200 

on the zoom channel).

2. Select ‘Enable calibration adjustment’ on the Control/Settings channel and hold for 5 seconds to 

activate.

3. The fixture now registers the current positions of all effects and holds them there. To select an effect to 

adjust, you must first release it from its hold position by changing the value on its DMX channel by 
+/- 10%. The effect then returns to its hold position. The effect's DMX channel now represents the full