Cable Connectors
Cabling must have a male XLR connector on one end and a female XLR connector on the other end.
DMX connector configuration
|
| COMMON |
|
|
INPUT | 1 | DMX + | 1 | OUTPUT |
3 |
| 3 | ||
| 2 | DMX - | 2 |
|
|
|
|
|
Terminator
1
3
2
To avoid signal transmission problems and interference, it is always advisable to connect a DMX signal terminator.
120 ohm ¼ W resistor between pin 2 (DMX
Do not allow contact between the common and the fixture’s chassis ground. Grounding the common can cause a ground loop, and your fixture may perform erratically. Test cables with an ohm meter to verify correct polarity and to make sure the pins are not grounded or shorted to the shield or each other.
Setting the Starting Address
This DMX mode enables the use of a universal DMX controller device. Each fixture requires a start address from 1~512. A fixture requiring one or more channels for control begins to read the data on the channel indicated by the start address. For example, a fixture that uses six DMX channels, addressed to start on DMX channel 100, will read data from channels: 100, 101, 102, 103, 104, and 105. Choose start addresses so that the channels used do not overlap, and note the start address selected for future reference.
If this is your first time addressing a fixture using the DMX control protocol, we suggest jumping to the “Appendix” section and reading the heading “DMX Primer”. It contains very useful information that will help you understand its use.
5. Appendix | 15 | 8/31/2010 4:41 PM |
