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Mode 1 Operation: Master Intensity on 1 DMX Channel 

 
Mode 1 is the simplest operational mode, using only a single DMX channel, corresponding to the 
base address selected by the three address switches.  The data on that DMX channel will control the 
intensity of the output from the unit, with a zero level producing no output, and a maximum level of 
255 producing maximum output from the unit.  Manual mode operation, as described later in this 
document, is only available when the unit is set to Mode 1.    
 
 

Mode 2 Operation:  Master Intensity plus Strobe on 2 DMX Channels 

 
Mode 2 allows control of both Intensity and Strobe rate, and uses two DMX channels beginning 
with the base address selected by the address switches.  The data on the first DMX channel will 
control the intensity of the output from the unit, with a zero level producing no output, and a 
maximum level of 255 producing maximum output from the unit.  The data level on the second 
DMX channel will control the flash or strobe rate of the unit, with a zero level producing a one 
second flash every other second, with a maximum flash rate of around 30 flashes per second at a 
data level of approximately 245.  Data levels from 245 to the maximum of 255 will result in 
continuous operation.  Manual operation, as described later, is not available in Mode 2.    
 

 
Mode 3 Operation:  3 Bank Intensity on 3 DMX Channels 

 
Mode 3 allows individual control of Intensity for each of the three banks of 16 LED devices 
installed in the unit.  This mode uses three DMX channels beginning with the base address selected 
by the address switches.  The data on the first DMX channel will control the intensity of the LED 
devices in Bank 1, with a zero level producing no output, and a maximum level of 255 producing 
maximum output.  The data levels on the second and third DMX channels will control the output of 
the LED devices in Banks 2 and 3 in a similar manner.  This mode is most commonly used with a 
mixture of LED dispersions, wavelengths, or with banks of UV and White LED’s.    Manual 
operation, as described later, is not available in Mode 3.    

 
 
Mode 4 Operation:  Master Intensity plus 3 Bank Intensity on 4 DMX Channels 

 
Mode 4 allows individual control of Intensity for each of the three banks of LED devices installed 
in the unit, plus a master level control.  This mode uses four DMX channels beginning with the base 
address selected by the address switches.  The data on the first DMX channel will control the 
intensity of all LED devices in all banks, with a zero level producing no output, and a maximum 
level of 255 producing maximum output, up to the levels set by the individual bank controls.  The 
data levels on the second, third, and fourth DMX channels will control the output of the LED 
devices in Banks 1, 2, and 3 in a similar manner.  This mode is most commonly used with a mixture 
of LED dispersions, wavelengths, or with mixed banks of UV and White LED’s.    Manual 
operation, as described later, is not available in Mode 4.    
 

Summary of Contents for BL-48

Page 1: ...ghting system for professional displays or may be set up for independent operation at a preset intensity or strobe rate in stand alone UV lighting applications A range of UV LED options are now available for installation in the unit For replacing existing fluorescent or incandescent UV light sources 395 nanometer UV LED s may be installed to duplicate the deep blue violet output common to those fi...

Page 2: ...nded for operation with external power supplies which comply with the SELV Safety Extra Low Voltage requirements Operation of the unit from power sources which do not meet the SELV standard is not recommended and may result in an increased risk of electrical shock Suitable Mounting Surfaces The BL 48 unit may be mounted to any suitable surface including those consisting of normally flammable mater...

Page 3: ...DIATION CLASS 1M LED PRODUCT Controls and Connections The rear panel of the unit includes a power input jack for a UL approved Class II 24 volt DC power source a red LED power indicator and three rotary selector switches to choose the base DMX address for the device A slide switch to the left of the address switches can be set to provide a resistive termination to the DMX data lines if the unit is...

Page 4: ...n read the address information selected on the three DMX address switches and will respond to appropriate DMX commands or to manual operation instructions as established by those switch settings and the internal mode selected After the start sequence is complete the DMX Sync indicator will illuminate steadily in green when valid DMX data is being received and will not illuminate or will flash inte...

Page 5: ...olerate minor interruptions in the DMX data stream caused by poor connections or brief dropouts After this interval the unit will default to the normal no DMX data state with all output channels inactive Normal operation will resume immediately when the normal data stream is restored DMX Troubleshooting If the Sync indicator is not steadily illuminated when DMX data is connected then there is eith...

Page 6: ... Bank 2 Intensity Bank 3 Intensity Mode Selection The Mode Select jumpers are J7 and J8 located near the right edge of the main circuit board between the large regulator IC and the power input socket Move the shorting jumpers as indicated in the diagram below to change the operating mode Refer to the parts layout drawing which appears later in this manual for further illustrations of the jumper lo...

Page 7: ...dividual control of Intensity for each of the three banks of 16 LED devices installed in the unit This mode uses three DMX channels beginning with the base address selected by the address switches The data on the first DMX channel will control the intensity of the LED devices in Bank 1 with a zero level producing no output and a maximum level of 255 producing maximum output The data levels on the ...

Page 8: ...gramming Operation of the unit in Manual Mode is controlled by the settings of the DMX address switches The output of the unit may be adjusted using the address switch settings to obtain a wide range of intensity levels and strobe rates Once established manual mode settings are retained when power is removed from the unit and will be restored when power is reapplied provided that no changes are ma...

Page 9: ...ramming then reads the settings of the internal mode jumpers to determine the general display configuration Once these settings are established the controller then reads the settings of the DMX address switches and goes into either a manual display mode if the address settings are 600 or higher or a DMX controlled mode if the address settings are in the range of from 1 to 512 If no DMX data is ava...

Page 10: ...he processor operates from permanent firmware EPROM programming which controls all functions of the illuminator This programming is performed during manufacturing and may not be re written by the user The microcontroller has three 8 bit input output ports which may be programmed as needed for each particular application These ports are commonly identified by letter designations B C and D In the BL...

Page 11: ...tors Q1 2 and 3 responding to control voltages from the microcontroller to determine the current flow through each portion of the array Depending on the settings of the microcontroller each of the three section may be controlled independently ar will act as a single unit Service Access The active electronics of the BL 48 illuminator are mounted on two circuit boards inside the main housing of the ...

Page 12: ...its To check the basic function of the unit remove power and DMX connections and set the unit to manual mode by setting the DMX address switches to 699 Reapply power to the unit and observe the display If a normal display is observed then the LED and driver circuits are fully functional but the DMX control input signal is absent or is being ignored by the illuminator Check the setting of the mode ...

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