Digital View AC-1024 Instructions Manual page 7

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10. VGA Input Cable: As this may affect regulatory emission test results and the quality
of the signal to the controller a suitably shielded cable should be utilised.
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Video input: With the optional video input board added it is possible to accept and
display PAL & NTSC signals with either S-video or composite signal. When the video
add-on board is fitted OSD menu functions will be available for setting video
characteristics and controlling the input source. The add-on board also provides RCA
type connectors for audio input (see next note).
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Audio control: With the optional audio add-on board it is possible to control volume
through the OSD menu. The audio board fits on the right hand edge of the main
controller.
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Power Input: 12V DC is required, this should be a regulated supply. Although the
controller provides power regulation for the LCD power this does not relate to the power
supplied to the backlight inverter. If an unregulated power supply is provided to an
inverter any fluctuations in power may affect operation, performance and lifetime of the
inverter and or backlight tubes.
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Power output: Note the controller has an overall 3Amp current limit and the current
available from the auxiliary power output will be dependent on the power input and other
system requirements.
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Power Safety: Note that although only 12VDC is required as 'power-in' a backlight
inverter for panel backlighting produces significantly higher voltages (the inverter does
not connect to the ground plane). We strongly advise appropriate insulation for all
circuitry.
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EMI: Shielding will be required for passing certain regulatory emissions tests. Also the
choice of external Controller to PC signal cable can affect the result.
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Ground: The various PCB mounting holes are connected to the ground plane.
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Servicing: The board is not user serviceable or repairable. Warranty does not cover
user error in connecting up to the controller and is invalidated by unauthorized
modification or repairs.
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Controller Mounting: It is recommended that a clearance of at least 10mm is provided
above and 5mm below the controller when mounted. Additionally consideration should
be given to:
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Electrical insulation.
Grounding.
EMI shielding.
Cable management. Note: It is important to keep panel signal cables apart from
the inverter & backlight cables to prevent signal interference.
Heat & Ventilation: Heat generated from other sources, for example the backlight
of a very high brightness panel may generate significant heat which could
adversely affect the controller.
Other issues that may affect safety or performance.
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