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14 MAC 401

™

user manual

Whether one or two LED modules are installed on a fixture, all modules’ DMX addresses must be set

manually using the ADDR menu for that module. You can set the address of each module on the rear of the

head immediately after the channels used by the module on the front of that head, or group similar modules

together, for example, or set addresses according to any other preference. Table 2 and Table 3 on the

following pages can help you determine the number of DMX channels used by a module, if you are in any

doubt.

DMX control modes

The MAC 401 can be set to various combinations of DMX control modes using the DMX - PSET menu.

Different modes are available for RGB Zoom and CT Zoom LED modules. See “DMX protocols” on page 25

for details of the DMX commands available in the different modes. The MAC 401 automatically recognizes

which type of LED modules are fitted to the front and rear and lists only the DMX modes available for those

modules:

RGB Zoom module control modes

If an RGB Zoom LED module is installed, it can be set to six DMX control modes in the DMX - PSET menu:

• RAWX – Uncalibrated RGB color mixing with dynamic effects available

• RGBX – Calibrated RGB color mixing with dynamic effects available (this is the default control mode

setting)

• HSX – Hue, saturation, value color control with dynamic effects available

• RAW – Uncalibrated RGB color mixing with no dynamic effects available

• RGB – Calibrated RGB color mixing with no dynamic effects available

• HS – Hue, saturation, value color control with no dynamic effects available

CTC (color temperature control) is available in all six modes.

CT Zoom module control modes

If a CT Zoom LED module is installed, it can be set to two DMX control modes in the DMX - PSET

submenu:

• CTX – Warm white, cold white, CTC with dynamic effects available (this is the default control mode

setting)

• CT – Warm white, cold white, CTC with no dynamic effects available.

One DMX channel between the warm white and cold white channels on CT Zoom modules is left unused so

that RGB Zoom and CT Zoom modules use the same number of channels. This avoids the need to repatch

lighting desks if one type of LED module is replaced with another.

DMX channel requirements

The number and type of LED modules installed, pixel grouping and control mode determine the number of

DMX channels used:

• When two LED modules are installed, the DMX protocol for the module on the rear of the head does not

contain coarse and fine pan, coarse and fine tilt or fixture control channels. This module will thus require

five less DMX channels than if it was installed on the front of the head.

• The RGB Zoom module uses four channels per pixel group to control Red/Green/Blue/CTC

Hue/Saturation/Value/CTC.

• The CT Zoom module uses four channels per pixel group to control warm white/unused/cold white/CTC.

• No matter which LED module is installed and whether it is installed in the front or rear of the head, pixel

group setting PGRP - All uses four channels, pixel group settings 2H and 2V divide the module into two

groups and therefore use eight channels, and pixel group setting 1 divides the module into four groups

and therefore uses sixteen channels to control color or color temperature. See “Pixel grouping” on page

13.

• Control modes that incorporate dynamic effects use eight additional DMX channels.

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