PC, DVI INTERFACE CONTROLLER
FOR TFT PANEL
Model: ALR-1400
Part number : 41710003X/4X-3 or up
INSTRUCTIONS
CONTENTS
Page:
2. Introduction, How to Proceed, Usage Note, Disclaimer
2. System design
– Diagram of a suggested system
3. Assembly notes
– Important information about system elements
5. Connection & Operation
– How to use the controller
9. Connectors, pinouts & jumpers
– Essential connection information
17. Controller dimensions
18. Application notes
20. Troubleshooting
21. Specifications
22. Appendix I – Graphic Mode Support Table
23. Appendix II – RS-232 control protocols
26. Appendix III – Mapping definition
28. Appendix IV – Auto Color Gain
29. Warranty, Caution & Limitation of Liability, Trademarks
30. Contact details
It is essential that these instructions are read and understood before connecting or
powering up this controller.
1
Introduction
Designed for LCD monitor and other flat panel display applications, the ALR-1400 controller provides easy to use
interface controller for:
TFT (active matrix) LCDs with LVDS interface of 1366x768, 1280x1024, 1280x800, 1280x768, 1024x768, 1024x600,
800x600, 800x480, 640x480, 480x234 resolution;
Computer video signals of SXGA, XGA, SVGA, VGA standard
Support LVDS or TTL interface panel
HOW TO PROCEED
Ensure you have all parts & that they are correct, refer to:
•
Connection diagram (separate document for each panel)
•
Connector reference (in following section)
•
Assembly notes
Check controller switch & jumper settings (errors may damage the panel)
Prepare the PC
Connect the parts
Understand the operation and functions (in following section)
IMPORTANT USAGE NOTE
This product is for use by system developers and integrators, the manufacturer accepts no liability for damage or
injury caused by the use of this product. It is the responsibility of the developer, integrators or other user of this
product to:
Ensure that all necessary and appropriate safety measures are taken.
Obtain suitable regulatory approvals as may be required.
Check power settings to all component parts before connection.
Understand the operation and connectivity requirements of this controller.
DISCLAIMER
There is no implied or expressed warranty regarding this material.
SYSTEM DESIGN
A typical LCD based display system utilising this controller is likely to comprise the following:
Summary:
1. LCD panel
2. LCD controller card, ALR-1400
3. LVDS cable (for connection with LVDS panel)
4. TTL cable (for connection with TTL panel)
5. Inverter for CCFT backlight (if not built into LCD)
6. Inverter cable
7. Function controls
8. Function controls cable
9. Status LED
10. DVI-D input
11. Analog VGA input
12. Power input (12VDC / 24VDC)
13. RS-232 control port
Digital View offers a range of accessories such as listed above, to make up complete display solution.
2
ASSEMBLY NOTES
This controller is designed for monitor and custom display projects using 1366 x 768, 1280 x 1024, 1280 x 800, 1280 x 768 or
1024 x 768, 1024 x 600, 800 x 600, 800 x 480, 640 x 480 or 480 x 234 resolution TFT panels with a VGA, SVGA, XGA, SXGA
signal input. The following provides some guidelines for installation and preparation of a finished display solution.
Preparation:
Before proceeding it is important to familiarize yourself with the parts making up the system and the various
connectors, mounting holes and general layout of the controller. As much as possible connectors have been labeled. Guides
to connectors and mounting holes are shown in the following relevant sections.
1.
LCD Panel:
This controller is designed for typical LVDS or TTL interface TFT panels with panel voltage 3.3V or 5V or 12V
or 18V LVDS interface. Due to the variation between manufacturers of signal timing and other panel characteristics
factory setup and confirmation should be obtained before connecting to a panel.
(NOTE: Check panel power jumper
settings before connection)
Controller card:
Handle the controller card with care as static charge may damage electronic components.
LVDS signal cable :
In order to provide a clean signal it is recommended that LVDS signal cables are no longer than
46cm (18 inches). If loose wire cabling is utilized these can be made into a harness with cable ties. Care should be taken
when placing the cables to avoid signal interference. Additionally it may be necessary in some systems to add ferrite cores
to the cables to minimize signal noise.
TTL signal cable:
In order to provide a clean signal it is recommended that LCD signal cables are no longer than 33cm
(13 inches). If loose wire cabling is utilized these can be made into a harness with cable ties. Care should be taken when
placing the cables to avoid signal interference. Additionally it may be necessary in some systems to add ferrite cores to
the cables to minimize signal noise.
Inverter:
This will be required for the backlight of an LCD, some LCD panels have an inverter built in. As panels may
have 1 or more backlight tubes and the power requirements for different panel models backlights may vary it is important
to match the inverter in order to obtain optimum performance. See page 15 for the Application notes “Inverter connection
section for more informations.
Inverter Cables:
Different inverter models require different cables and different pin assignment. Make sure correct cable
pin out to match the inverter. Using wrong cable pin out may damage the inverter.
Function Controls:
The following section discusses the controls required and the section on connectors provides the
detail. The controls are minimal: On/Off, Backlight Brightness (depends on inverter), OSD (5 momentary buttons) analog
VR type or (8 momentary buttons) digital type.
Function controls cable:
The cables to the function switches should be of suitable quality and length so that impedance
does not affect performance. Generally lengths up to 1 metre (3 feet) should be acceptable.
DVI-D Input Cable :
Plug the DVI cable to the connector P2 on the controller board
2.
3.
4.
5.
6.
7.
8.
9.
10. Analog 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 utilized.
•
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 10-11 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.
•
•
•
•
•
3
•
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.
4
CONNECTION & OPERATION
CAUTION:
Never connect or disconnect parts of the display system when the system is powered up as this may cause serious
damage.
CONNECTION
Connection and usage is quite straight forward (it is useful to have the relevant connection diagram available at this time):
1.
LCD panel & Inverter:
Connect the inverter (if it is not built-in the panel) to the CCFT lead connector of the LCD
panel.
2.
LVDS type panels:
Plug the LVDS signal cable direct to CN1 (if necessary). Insert the panel end of the cable to the
LCD panel connector.
3.
TTL type panels:
Plug the signal cables direct to CN2 or CN3. Plug the other end of cables to the LCD connector
board (if connector board is required, otherwise the signal can be direct plug to the LCD panel
connector). Then plug the board connector to the LCD panel connector.
4.
Inverter & Controller:
Plug the inverter cable to CNB1 and CNA1 (if necessary). Plug another end to the connector
on the inverter.
5.
Function switch & Controller:
Plug the OSD switch mount cable to CNC1 on the controller board and another to
the OSD switch mount.
6.
LED & Controller:
Plug in a 3-way with dual colour LED to connector LED1 on the controller board.
7.
Jumpers :
Check all jumpers are set correctly. Details referring the connection diagram at
http://www.digitalview.com/controllers/csg.php
8.
Jumpers & Inverter & Panel voltage:
Particularly pay attention to the settings of JA3, JA6, JB2, JB3. JB2 & JB3
are used for inverter control (read inverter specification and information on the jumper table to define the correct
settings). JA3 & JA6 are used for panel voltage input (read panel specification and information on the jumper table to
define the correct settings).
9.
DVI cable :
Plug the DVI cable to the connector P2 on the controller board.
10.
VGA cable & Controller:
Plug the VGA cable to the connector P1 on the controller board.
12.
Power supply & Controller:
Plug the DC 12V / 24V power in to the connector PP2. You can consider to use
DigitalView mating power cable P/N 426013800-3, 160mm.
13.
Power on:
Switch on the controller board and panel by using the OSD switch mount.
CAUTION:
Never connect or disconnect parts of the display system when the system is powered up as this may cause serious
damage.
LED status :
State
No signal & backlight off
No signal & backlight on
With signal & backlight on
LED color
RED
ORANGE
GREEN
General:
•
If you are using supplied cables & accessories, ensure they are correct for the model of panel and controller.
•
If you are making your own cables & connectors refer carefully to both the panel & inverter specifications and the section
in this manual, “Connectors, Pinouts & Jumpers” to ensure the correct pin to pin wiring.
PC SETTINGS
The controller has been designed to take a very wide range of input signals however to optimize the PC’s graphics performance
we recommend choosing 60Hz vertical refresh rate – this will not cause screen flicker.
OPERATION
Once the system has been connected and switched on there are a number of functions available to adjust the display
image as summarized in the following sections. The settings chosen will be saved for each mode independently.
5
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