Specifications

1
BooBox FlexMax FI-216 Operating Manual - page 16
2
Typical DMX Chain
A typical DMX chain with a few dimmer packs might look like this. Every DMX device has an input and output,
additional devices are always connected to the output of the last device.
DMX Terminators
If your DMX chain is really long (100 feet or more), or if you start noticing wonky behavior, you might need to
terminate your DMX chain. Terminators are really just a 120 ohm resistor. They absorb the signal at the end of
the cable so it doesn’t reflect and cause interference. Terminators can be purchased on our website if required,
or make your own with any 120 ohm resistor.
Setting DMX Channels
If you were using one 4 Channel DMX Dimmer Pack, you'd want to set it to start listening at channel 4. This
would mean it’s listening to channels 4,5,6, and 7. Any additional dimmer packs would be set to the next
available channel, which in this example would be channel 8. You don't have to use all 4 channels if you don't
want. If you’re only using two outputs on the first dimmer pack, you could set the second dimmer pack’s
starting channel to 6.
The starting channel for many DMX devices is set using dip switches with each little switch having a numeric
value. The first switch has a value of 1, second is 2, third is 4, fourth is 8, fifth is 16, etc. Turn on the switches
that add up to the value you want. So for example if you want DMX channel 4, turn on only the third switch.
For DMX channel 6, turn on both the second and third switch.
FlexMax DMX Channel Assignments
The FlexMax reserves the first three DMX channels for itself (five if you are using the servo outputs). If you
want to control a DMX device, set its starting channel to 4 if you are not using the servo outputs, or 6 if you are.
FlexMax DMX Channels
DMX CH
Description
1
Scene and sound command
2
Outputs 1 – 8
3
Outputs 9 – 16
4
RC Servo A
5
RC Servo B