18 DMX
control
DMX control
O v e r v i e w
DMX is a digital control system widely used in entertainment and architectural
lighting. Any controller meeting the DMX-512 standard may be used to control
and program the fog output of the Roadie Compact.
When a DMX signal is present, the Roadie Compact’s stand-alone
functions do not work. To fire the unit from the control panel or remote
control, the DMX controller must be powered off or disconnected.
C o n n e c t i o n
The Roadie Compact provides both 3-pin and 5-pin XLR sockets on the rear
panel of the base for DMX connection. The sockets are interconnected: a DMX
line connected to the 3-pin IN socket may be continued through the 5-pin OUT
socket and vice versa. Do not, however, attempt to split a DMX line by using
both the 3-pin and 5-pin OUT sockets.
For best results, use cable designed for high speed digital data transmission.
Suitable DMX cable is available from your Jem dealer.
D M X f u n c t i o n s
The Roadie Compact’s address setting must match the DMX address allocated
to it on the controller. To set the address, see “Setting the DMX base address”
on page 14. The Roadie Compact requires two DMX channels.
DMX channel
function
1
Fog density 0-100%
2
Fan speed 0-100% and Shutdown
Channel 1 uses the full range 0-255 for fog density control.
Channel 2 has the following control values.
For example if the Roadie Compact is set to DMX address 100, channel 1 will be
controlled by address 100 and channel 2 will be controlled by address 101.
When the machine is at running temperature and is under DMX control it
displays
$-8
.
DMX value
function
0-244
Fan speed 0-100%, heaters on
245-255
machine shutdown, heaters off
