LED-HC 101
10-
down the system.
4. The DMX output and input connectors are pass-through to maintain the DMX
circuit, when one of the units
’ power is disconnected.
5. Each lighting unit needs to have an address set to receive the data sent by the
controller. The address number is between 0-511 (usually 0 & 1 are equal to 1).
6. The end of the DMX 512 system should be terminated to reduce signal errors.
7. 3 pin XLR connectors are more popular than 5 pin XLR.
3 pin XLR: Pin 1: GND, Pin 2: Negative signal (-), Pin 3: Positive signal (+)
5 pin XLR: Pin 1: GND, Pin 2: Negative signal (-), Pin 3: Positive signal (+)
8. Troubleshooting
Following are a few common problems that may occur during operation. Here are
some suggestions for easy troubleshooting:
A. The fixture does not work
1. Check the connection of power and main fuse.
2. Measure the mains voltage on the main connector.
B. Not responding to DMX controller
1. DMX LED should be on. If not, check DMX connectors and cables to see if link
properly.
2. If the DMX LED is on and no response to the channel, check the address
settings and DMX polarity.
3. If you have intermittent DMX signal problems, check the pins on connectors or
on PCB of the fixture or the previous one.
4. Try to use another DMX controller.
5. Check if the DMX cables run near or run alongside to high voltage cables that
may cause damage or interference to DMX interface circuit.
C. No response to the sound