Lightronics UMX24 DMX-512 or LMX-128 to Analog - Manual (Page 2)

Page 2 of 5
UMX – 24 DMX/LMX to ANALOG TRANSLATOR
Revision 0.3 OWNERS MANUAL 07/27/2005
www.lightronics.com
Lightronics Inc
509 Central Drive Virginia Beach, VA 23454 757 486 3588
ANALOG OUTPUT CONNECTIONS
The 25 pin (DB-25) D connector on the front of the unit is for the analog output signals which are to be connected
to the analog dimmers or other analog compatible lighting devices. Pin 1 of the DB-25 connector is the channel 1
output signal. Channels 2 through 24 follow in sequence (pin# = channel#). Pin 25 is the common or signal
ground.
OPERATION
The red LED indicator on the front panel lights when power is applied to the unit. The green LED on the rear of
the unit is lighted when a valid input signal is present.
The unit may be set to operate any range of 24 channels up to 512 by setting DIP switches on the front of the
unit. A table at the back of this manual shows DIP switch address settings.
The 2nd from the left DIP switch operates a hold function. If this switch is set to UP and the incoming signal is
removed – the unit will continue to send the last valid channel information to the dimmers.
If both DMX and LMX input signals are present, the DMX signal will be used and the LMX signal will be ignored.
The UMX-24 will not convert DMX to LMX or convert LMX to DMX.
TRIM ADJUSTMENT
A output level trim adjustment is accessible via a hole in the front panel. If you connect a dc voltmeter to any of
the analog outputs - you can then adjust the output level. The adjustment is applied to all channel outputs.
EXTERNAL POWER SUPPLY INFORMATION
Input Voltage:
120VAC
Output Voltage: 13.5 VAC
Output Current: 800 Milliamps
Connector: 2.1mm female connector
The UMX-24 will operate using an alternative external power supply which can provide anywhere from 13 to 24
Volts AC or DC. The supply must be rated at 600 ma. If a DC supply is used, the center pin of the connector
MUST BE THE NEGATIVE output terminal of the supply.
MAINTENANCE
TROUBLESHOOTING
9
Check the connections and integrity of the associated cables (a very common source of problems).
9 Ensure that the dimmers are on and operating. Verify that the dimmers addressing is correctly set.
9 Check the address settings on the UMX-24.
REPAIR
There are no user serviceable parts in the unit. Service by other than Lightronics authorized agents will void the
warranty. If service is required, contact the dealer from whom you purchased the unit or contact Lightronics.
Analog Output Connector Pin Locations
13 1
25 14