Velleman VM138 - Manual (Page 8)

8
LED LD2 “Error” Functions:
LD2, the “Error” LED has following functions:
Flashes once at turn-ON of the module. Allows you to check if the CPU is functioning.
Flashes slowly when there is no DMX signal reception, no connection between the DMX controller and
the module, a DMX signal error or no signal compatibility.
Flashes rapidly when the DMX address is positioned on 0 and/or the manual override function has been
activated.
JP1: DMX Mode:
In normal mode (JP1 not mounted) the module will react every time to the DMX value.
When the error correction mode is activated (JP1 mounted), you will obtain a higher degree of stability
which is useful when using some brands of DMX devices; This mode will check the DMX value twice be-
fore modifying the relay status. The drawback is that the relay will react slower when modifying the DMX
value rapidly.
JP2: Relay HOLD Status:
Mounted : the relay will deactivate when the DMX connection is disrupted.
Not mounted : the relay will keep its status when the DMX connection is disrupted.
DMX channel