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PDF ALR-1920 Data sheet ( Hoja de datos )
| Número de pieza | ALR-1920 | |
| Descripción | DISPLAY PORT INTERFACE CONTROLLER | |
| Fabricantes | Digital View | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ALR-1920 (archivo pdf) en la parte inferior de esta página. Total 36 Páginas | ||
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PC, HDMI, DISPLAY PORT INTERFACE CONTROLLER
FOR TFT PANEL
Model: ALR-1920
Part number : 41727001X/2X-3 or up
INSTRUCTIONS
CONTENTS
Page: 2. Introduction, How to Proceed, Usage Note, Disclaimer
3. System design – Diagram of a suggested system
4. Assembly notes – Important information about system elements
6. Connection & Operation – How to use the controller
10. Connectors, pinouts & jumpers – Essential connection information
19. Controller dimensions
20. Application notes
22. Troubleshooting
23. Specifications
24. Appendix I – Mode Support Table
26. Appendix II – RS-232 control protocols
30. Appendix III – DDC/CI support at ARGB, HDMI & Display port
31. Appendix IV – Mapping definition
33. Appendix V – Auto Color Gain
34. Appendix VI – DV remote control unit work for ALR-1920
35. Warranty, Caution & Limitation of Liability, Trademarks
36. Contact details
It is essential that these instructions are read and understood before connecting or
powering up this controller.
1 page  
16. Audio output (Stereo) with amplication from HDMI / Display Port : This port support Stereo audio output from the HDMI
/ Display Port audio source inputted. This port has the same audio path output from J1. It requires to select the audio port
“Speakers” via OSD menu under “Sound” > “Output” OSD menu page.
Start from P/N 417270020-3 or up version, the board supports disable speaker out(CN1) while stereo jack(J1) being
plugged.
17. SPDIF Audio output : This port support SPDIF audio output from the HDMI / Display Port audio source inputted. It
requires to select the audio port “SPDIF” via OSD menu under “Sound” > “Output” OSD menu page.
18. Backlight status input : It only functions when connecting with the panel which support backlight status detection pin.
19. Power Input: 12V / 24V 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. 24VDC input is required when the panel output voltage is 18VDC. Please refer to page 11-12 for proper jumper
settings.
• Power Safety: Note that although only 12VDC / 24VDC is supplied 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.
• 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.
• Ground: The various PCB mounting holes are connected to the ground plane.
• 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.
• 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:
• 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.
• PC Graphics Output: A few guidelines:
• Signal quality is very important, if there is noise or instability in the PC graphics output this may result in visible noise
on the display.
• Refer to graphics modes table in specifications section for supported modes.
• Non-interlaced & interlaced video input is acceptable.
IMPORTANT: Please read the Application Notes section for more information.
Page 5 of 36
5 Page 
Summary: Jumpers setting
Ref Purpose
JA1 On board +5V logic power enable
JA3 Panel power voltage select
JA6 Panel power voltage select
JB1 Backlight brightness voltage range
JB2 Backlight inverter on/off control – signal level
JB3 Backlight inverter on/off control – polarity
JB5 Backlight control type selection
JB6 Backlight status
JP1 Reserved
JP6 Input power control
SW1
SW2
Panel selection
Panel selection
Table 1 : Panel voltage setting table :
Input voltage via
PP2
Panel Voltage
JA3
JA6
Note
1-3 & 2-4 closed, factory set, do not remove
See panel voltage setting table 1
CAUTION: Incorrect setting will cause panel damage
See panel voltage setting table 1
CAUTION: Incorrect setting will cause panel damage
1-2 closed = 3.3V max
2-3 closed = 5V max
1-2 = On/Off control signal ‘High’ = +3.3V
2-3 = On/Off control signal ‘High’ = +5V
Open = On/Off control signal ‘High’ = Open collector
CAUTION: Incorrect setting can damage inverter.
1-2 = control signal ‘high’ = CCFT ON
2-3 = control signal ‘low’ = CCFT ON
1-2 = VR/Digital switch mount control
3-4 = Analog backlight brightness control via RS-232
command (0xe0) – voltage range 0~5V
5-6 = PWM (Pulse Width Modulation) brightness
1-2, 3-4 closed = Backlight status Low – Normal
1-3, 2-4 closed = Backlight status High - Normal
Open = Backlight status not used
Reserved for internal programming use (Always 1-2
closed)
Short = External switch control
Open = Switch mount control
See table below
See table below
Jumper on board
3.3V
3V3 closed 1-3 & 2-4
12VDC
5V 5V closed 1-3 & 2-4
12V OPEN 5-7 & 6-8
CAUTION: Incorrect setting can damage panel & controller
Page 11 of 36
11 Page | ||
| Páginas | Total 36 Páginas | |
| PDF Descargar | [ Datasheet ALR-1920.PDF ] | |
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