Marshall electronic NCB-1004 User Manual

Marshall Electronics
Network Control Box for IMD Monitors
NCB-1004
Operating Instructions
Contents
Product Overview..................................................................................................................................................................4
Features .................................................................................................................................................................................4
Installation and Initial Setup ................................................................................................................................................5
Unpacking..............................................................................................................................................................................................5
Installation .............................................................................................................................................................................................5
Power-On Procedure.............................................................................................................................................................................5
Front and Rear Panel Features............................................................................................................................................6
RS-422 Outputs.....................................................................................................................................................................................6
Control Input..........................................................................................................................................................................................6
RJ-45 Network Inteface.........................................................................................................................................................................6
Power Input ...........................................................................................................................................................................................6
Power LED ............................................................................................................................................................................................6
Connecting to the NCB-1004................................................................................................................................................7
Overview................................................................................................................................................................................................7
Connecting the NCB-1004 to a Single Computer ..................................................................................................................................7
Connecting the NCB-1004 to an Local Area Network............................................................................................................................9
Changing the IP Address of the NCB-1004 ......................................................................................................................10
Overview..............................................................................................................................................................................................10
Required Software...............................................................................................................................................................................10
Procedure............................................................................................................................................................................................10
System Configuration.........................................................................................................................................................13
Overview..............................................................................................................................................................................................13
Basic Remote Control of IMD Monitors................................................................................................................................................13
Overview.........................................................................................................................................................................................13
Wiring Diagram...............................................................................................................................................................................13
Monitor Configuration......................................................................................................................................................................13
Remote Control with Image Video Pass-Through................................................................................................................................14
Overview.........................................................................................................................................................................................14
Wiring Diagram...............................................................................................................................................................................14
Monitor Configuration......................................................................................................................................................................14
Remote Control with TSL Pass-Through .............................................................................................................................................15
Overview.........................................................................................................................................................................................15
Wiring Diagram...............................................................................................................................................................................15
Monitor Configuration......................................................................................................................................................................15
Web Interface.......................................................................................................................................................................16
Overview..............................................................................................................................................................................................16
Target Monitor .....................................................................................................................................................................................16
Window Management..........................................................................................................................................................................17
Key & Image Enhancement.................................................................................................................................................................17
Preset Configuration............................................................................................................................................................................18
Test Mode............................................................................................................................................................................................18
OSD Configuration & IMD....................................................................................................................................................................19
System.................................................................................................................................................................................................20
Message Box.......................................................................................................................................................................................20
Table of Web Interface Commands.....................................................................................................................................................21
Specifications......................................................................................................................................................................22
Warranty...............................................................................................................................................................................23
3 3
Product Overview
The NCB-1004 Network Control box is a comprehensive remote control solution for Marshall’s IMD (In-Monitor Display) line of monitors. The NCB-1004 offers complete control of each monitor's menu settings and adjustments such as contrast, color, curtain color, aspect ratio, and more. The NCB-1004 can control up to 256 monitors individually by ID#, or up to 512 monitors simultaneously on a global scale. The NCB-1004 also enables the use of third party UMD controllers such as Image Video or TSL, while maintaining remote control of the monitor’s settings and adjustments. The NCB-1004 is operated with a web interface via a standard TCP/IP network connection. No special application or additional software is needed other than a standard web browser.
Features
Full Remote Control
The NCB-1004 offers complete control of all monitor settings and adjustments, such as brightness, color, contrast, aspect ratio, screen markers, curtain color, IMD text, etc.
Control Entire Video Walls or Individual Monitors
The NCB-1004 can send global commands to affect all monitors in a video wall, or individual commands to affect single monitors identified by ID#.
Support for Third Party UMD Protocols
The NCB-1004 accepts and transmits Image Video or TSL v4.0 protocol commands, while maintaining full remote control of the monitors settings and adjustments.
No Additional Software Needed
As the NCB-1004 is operated with a built-in web interface via a standard TCP/IP network, no special application or additional software is needed other than a standard web browser.
4
Installation and Power-On
Unpacking
Carefully unpack the NCB-1004 and verify that the following items are included:
• NCB-1004 Network Control Box
• V-PS12-5V-1 Power Supply with 2-Pin Twist Lock Connector
• Operating Instructions Inspect the unit for any physical damage that may have occurred during shipping. Should there be any damage,
immediately contact Marshall Electronics at (800) 800-6608. If you are not located within the continental United States, call +1 (310) 333-0606.
Installation
The NCB-1004 can be mounted in any standard EIA 19” equipment rack. If additional equipment is installed directly above and below the NCB-1004 in a rack, adequate ventilation of the rack is required to prevent overheating.
Power-On Procedure
Plug the V-PS12-5V-1 power supply into an AC power source (100-240 V @ 50/60 Hz). Attach the 2-pin twist lock connector to the back of the unit. The NCB-1004 will automatically turn ‘ON’ when power is supplied.
NOTE THAT THE NCB-1004 TAKES ABOUT 3 MINUTES AFTER POWER ON BEFORE IT IS FUNCTIONAL. WAIT 3 MINUTES AFTER POWER ON BEFORE ACCESSING THE NCB-1004 VIA A NETWORK CONNECTION.
Rack ears on
either side
5
Front and Rear Panel Features
RS-422 Outputs
The RS-422 outputs send MEI protocol commands to Marshall’s IMD line of monitors. Each output has exactly the same signal. Up to 128 screens can be connected to each output. These output ports also pass Image Video or TSL v4.0 protocol commands from the Control Input, embedded in the MEI protocol. See Page 22 for specifications.
Control Input
The RS-422 Control Input receives Image Video or TSL v4.0 protocol commands from an external controller. These commands are then embedded in MEI protocol and sent to the IMD monitors. See
page 22 for specifications.
RJ-45 Network Interface The RJ-45 network interface is used to connect the NCB-1004 to a standard TCP/IP network. The NCB­1004 is operated via an embedded web interface. See page 7 for configuration details.
Power Input
Connect the 12VDC input to the 2-Pin twist lock power input connector. Note that the NCB-1004
takes about 3 minutes to start up after power on, before the unit is functional.
IMPORTANT: If using a power source other than the included power supply, be sure that the polarity of the DC input is correct:
Power LED
The Power LED illuminates green when power is supplied to the unit.
6
Connecting to the NCB-1004
Overview
The NCB-1004 can be operated by any computer with a web browser, via a TCP/IP network connection. No additional software is needed. The NCB-1004 may be connected directly to a single computer, or connected to a local area network and accessed by multiple computers. The NCB-1004 is shipped with the default IP address 192.168.0.233.
The following procedures describe the two ways to connect to the NCB-1004.
Connecting the NCB-1004 to a Single Computer
To use the NCB-1004 for the first time, you will most likely need to connect the NCB-1004 directly to a single computer. After this connection is made, you can change the unit’s IP address to be suitable for your network. (See the next section “Changing the IP Address.”
1. Connect the NCB-1004 to a Windows-based computer using a standard ethernet cable. In general, a
standard “straight” ethernet cable should be used. If the PC’s ethernet jack is not auto-switching, it may be necessary to use a cross-over cable.
2. Supply power to the NCB-1004 with the included power supply.
3. In Windows, open the Network Connections control panel. (Start > Control Panel > Network Connections)
4. A Local Area Connection should be listed. Right-Click on Local Area Connection, and select Properties.
5. Scroll down the list in the Local Area Connection Properties, click on Internet Protocol (TCP/IP), and click the Properties button.
6. Enter the information as shown in the picture below:
7. Note that the last number in the IP address in the picture above is 232, rather than 233.
7
Connecting to the NCB-1004 (continued)
Connecting the NCB-1004 to a Single Computer (continued)
8. Click OK in the Internet Protocol (TCP/IP) Properties window, and then click Close in the Local Area Connection Properties window.
9. Open any web browser application (Internet Explorer, Firefox, etc.)
10. Enter the address http://192.168.0.233/
11. Click OK if the following dialog appears:
12. If successfully connected, the web interface of the NCB-1004 will be shown in the browser windows as shown below. Make sure the NCB-1004 has been powered on for at least 3 minutes before attempting to access the web interface.
8
Connecting to the NCB-1004 (continued)
Connecting the NCB-1004 to a Local Area Network
If the network portion of the unit’s IP address (first three numbers) matches your network, the NCB-1004 can be connected to a local area network and accessed from any computer on the network. The unit’s IP address must also be available on the network and reserved for the NCB-1004.
1. Connect the NCB-1004 to the network, using a standard ethernet cable:
PC
2. Using any computer connected to the network, enter the unit’s IP address in a web browser to access the NCB-1004 web interface.
3. If successfully connected, the web interface of the NCB-1004 will be shown in the browser windows as shown below:
Ethernet
cable
Network
* In general, a standard “straight” ethernet cable should be used. If the network hub’s ethernet jack is not auto-switching, it may be necessary to use a cross-over cable.
Ethernet
cable*
NCB-1004
9
Changing the IP Address of the NCB-1004
Overview
The NCB-1004 is shipped with a default IP address of 192.168.0.233. This IP address can be changed via the network connection. Note that the existing IP address must be known to make this change. If the existing IP address is
unknown, please contact Marshall Electronics for assistance.
Required Software
The following procedure requires Tera Term software for Windows, or a similar SSH tool. Tera Term is free software available on the internet at the following location:
http://www.ayera.com/teraterm/
Procedure
1. Connect the NCB-1004 to your network or directly to your Windows-based PC, with a standard ethernet patch cable. (When connecting the NCB-1004 directly to a computer, do not use a crossover cable.)
2. Verify connection of the NCB-1004 by loading the web interface in a browser window, at the current IP address.
3. Run the Tera Term software, and connect to the NCB via SSH at its existing IP address. Use the setting shown in the picture below:
4. At the username prompt shown below, login as root:
10
Changing the IP Address of the NCB-1004 (continued)
Procedure (continued)
5. At the password prompt shown below, do not enter a password and simply click OK:
6. Then, the following command line interface should appear:
7. Type the following command at the command prompt, and press enter:
vi /etc/network/interfaces
11
Changing the IP Address of the NCB-1004 (continued)
Procedure (continued)
8. The following file information should appear:
9. This file must be edited to save the new IP address. Use the following commands to edit the file. Edit only the numbers. Do not press the enter key after each command.
To move the cursor, use arrow keys or the following keys:
h left l right j down k up
To edit the text, use the following keys:
x delete single character under cursor r replace single character under cursor with single character i insert characters before cursor (press esc when finished typing) a insert characters after cursor (press esc when finished typing)
Save the file and exit the file editor using the following commands:
ZZ exit and save changes :q! exit without saving changes :w save file without exiting
10. Be sure to note the new IP address. Reboot the NCB-1004 for the new IP address to take effect.
12
System Configuration
Connect
monitors
to
RS-422 Outputs
on
Use second
RS-422 jack
on
multiple monitors.
Overview
The NCB-1004 can be used in three different system configurations. The following diagrams show the different configurations:
Basic Remote Control of IMD Monitors
Overview
Use the following configuration for basic remote control of Marshall IMD series monitors. This setup allows remote control of all features in the on-screen menu of each IMD monitor.
Wiring Diagram
Use the following configuration for basic remote control of Marshall IMD series monitors.
Connect up to 128
IMD screens per RS-
422 output
Monitor Configuration
The following settings are required on each IMD monitor: IMD Protocol: MEI
IMD Baud Rate: 57600 ID#: Each monitor must have a unique ID# for remote control of individual monitors.
PC
PC
Marshall
IMD
Marshall
IMD
Ethernet Cable to
Network Connection
on NCB-1004
Marshall
IMD
Marshall
IMD
Marshal IMD Monitors. Use up to 4 RS-422 outputs on NCB-1004.
Use 6P6C Modular Cable, wired pin-to-pin.
Marshall
IMD
Marshall
IMD
Marshall
IMD
Marshall
IMD
each monitor to daisy-chain
Marshall
IMD
Marshall
IMD
Network
Marshall
IMD
Marshall
IMD
13
Use second
RS-422 jack
on each monitor to
Connect
monitors
to
RS-422
Outputs
on
System Configuration (continued)
Remote Control with Image Video Pass-Through
Overview
Use the following configuration for basic remote control of Marshall IMD series monitors, while also passing through Image Video protocol. This setup allows remote control of the IMD monitor, and pass-through of Image Video text and tally commands from an Image Video TSI-1000 or other Image Video protocol source.
Wiring Diagram
Connect up to 128
IMD screens per RS-
422 output
Monitor Configuration
The following settings are required on each IMD monitor: IMD Protocol: MEI-Image Video IMD Baud Rate: 57600 ID#: Each monitor’s ID# will be set automatically by Image Video controller.
IMD Name (S/N): Each monitor must have a unique string in this field.
In this configuration, Pass-Through must be set to “ON” and to “Image Video” in the OSD Configuration & IMD Page of the web interface. See page 19 for details.
PC
Marshall
IMD
Marshall
IMD
Image Video TSI-1000 Tally Controller
(Or other Image Video Protocol Source)
Ethernet Cable to
Network Connection
on NCB-1004
daisy-chain multiple monitors.
Marshall
IMD
Marshall
IMD
Network
Marshall
IMD
Marshall
IMD
Marshall
IMD
Marshall
IMD
Marshal IMD Monitors. Use up to 4 RS-422 outputs on NCB-1004.
Use 6P6C Modular Cable, wired pin-to-pin.
Marshall
IMD
Marshall
IMD
NCB-1004
Marshall
IMD
Marshall
IMD
14
System Configuration (continued)
Use second
RS-422 jack
on each monitor to
From
UMD Port
on TSL Tally
From adapter to
Control In
put
Connect
monitors
to
RS-422
Outputs
on
Remote Control with TSL Pass-Through
Overview
Use the following configuration for basic remote control of Marshall IMD series monitors, while also passing through TSL v4.0 protocol. This setup allows remote control of the IMD monitor along with pass-through of TSL text and tally commands from a TSL Tally Man controller or other TSL protocol source.
Wiring Diagram
Connect up to 128
IMD screens per RS-
422 output
Monitor Configuration
The following settings are required on each IMD monitor: IMD Protocol: MEI
IMD Baud Rate: 57600
ID#: Each monitor must have a unique ID# for remote control of individual monitors.
In this configuration, Pass-Through must be set to “ON” and to “TSL” in the OSD Configuration & IMD Page of the web interface. See page 19 for details.
PC
Marshall
IMD
Marshall
IMD
TSL Tally Man Controller
(Or other TSL Protocol Source)
Man Controller to TSL to MEI
adapter. Use standard ethernet cable.
TSL to MEI adapter
(RJ-45 to RJ-11)
on NCB-1004. Use 6P6C
Modular Cable, wired pin-to-pin.
NCB-1004
Marshal IMD Monitors. Use up to 4 RS-422 outputs on NCB-1004.
Use 6P6C Modular Cable, wired pin-to-pin.
Marshall
IMD
Marshall
IMD
Marshall
IMD
Marshall
IMD
daisy-chain multiple monitors.
Marshall
IMD
Marshall
IMD
Network
Marshall
IMD
Marshall
IMD
Marshall
IMD
Marshall
IMD
15
Web Interface
Overview
The web interface is used to operate the NCB-1004. Once the NCB-1004 is connected to a network, access the web interface by entering the units IP address in any web browser on any computer on the network. The web interface allows remote control of all on-screen menu features of individual monitors or all monitors connected. The web interface also controls the pass-through of Image Video or TSL protocol.
Target Monitor
The target monitor frame is always visible at the top of the NCB-1004 web page:
Target Monitor
On the right side of the frame, choose which monitors to address:
o When the “All/Global” option is selected, all commands will be globally sent to all IMD monitors connected to
the NCB-1004.
o When the “Address” option is selected, all commands will be sent only to the IMD monitor with the ID# in the
adjacent field.
Note that to control individual monitors, each monitor must be pre-assigned a unique ID#. Also note that GET commands do not work in “All/Global” mode.
Protocol Pass-Through Status
On the right side of the frame, two windows show the protocol pass-through status:
o The first window displays “Image Video Protocol” or “TSL 4.0 Protocol,” according to which protocol is selected
for pass-through in the OSD Configuration & IMD page.
o The second window displays “Pass-Through: ON” or “Pass-Through: OFF,” according to the pass-through
setting in the OSD Configuration & IMD page.
16
Web Interface (continued)
Window Management
The Window Management page is shown below:
Use the buttons and menus shown above for the following settings:
o Aspect Ratio (4:3, Scaled 4:3, 16:9, Centered 16:9 / Full Screen) o On-Screen Markers (Aspect Ratio and Safe Area Markers) o Center Marker o Marker Background o Curtain Color
Key & Image Enhancement
The Key & Image Enhancement page is shown below:
Use the buttons and menus shown above for the following settings:
o Keypad Commands (Menu, Select, Up, Down, F1, F2, Power) – These commands simulate pressing keypad
buttons on a monitor. The entire on-screen menu can be navigated using this commands alone.
o Color, Brightness and Contrast (Increment, Decrement, Default) – Use these commands to manually
increment or decrement the value of the corresponding control by 1 unit.
o Brightness, Contrast and Color Value (0-100) – Use the SET command to assign a fixed value to the
corresponding control. Use the GET command to read the current value of a control
o ColorTemp Setting – Set the color temperature preset
17
Web Interface (continued)
Preset Configuration
The Preset Configuration page is shown below:
Use the buttons shown above to load and save presets in each monitor. Note that these controls affect the presets in each monitor only. There are no presets in the NCB-1004 itself.
o Load (Load presets User1 – User6, or Factory Default Settings) o Save (Save the current settings on each monitor to presets User1 – User6)
Test Mode
The Test Mode page is shown below:
Use the buttons shown above to send the following commands:
o Reset Test Mode – This command turns Blue mode, Monochrome Mode, and PixelToPixel mode OFF. o Blue Mode (Off, On) o Monochrome Mode (Off, On) o PixelToPixel Mode (Off, On)
18
Web Interface (continued)
OSD Configuration & IMD
The OSD Configuration & IMD page is shown below:
Use the first section of the OSD & IMD page to set the protocol pass-through settings:
o Set Protocol (Image Video, TSL) – Select the protocol type to be passed through the NCB-1004. Note that
this option must be set according to the protocol that is applied to the Control In input on the NCB-1004.
o Pass-Through (On, Off) – Enable or disable the pass-through of Image Video or TSL protocol. o Read Protocol Type – Refresh the Protocol Type display in the Target Monitor page. o Read TSL Status – Read the TSL error status. Results are displayed in the Message Box at the bottom of the
page.
Use the left-hand section of the page to configure the OSD with following commands:
o IMD State (Off, On) o Status Display (Off, On) o Timecode (Off, LTC, VITC) o Audio Monitor (Off, On)
Use the left-hand section of the page to configure the In-Monitor Display:
o Show IMD Address – This command displays the current of each monitor on each screen. o Set IMD Intensity (0-100) o Send IMD Alignment (Left, Center, Right) – Set the fixed string alignment of a monitor. o Send IMD Color (Red, Green, Yellow/Amber) – Set the fixed string color of a monitor. o Send IMD String – Set the fixed string in a monitor. o Send IMD Name – Set the IMD Name (S/N) of a monitor. o Get IMD Name – Get the IMD Name (S/N) of the selected monitor. o Show IMD – Show the fixed string on a monitor. o Show IMD Name – Show the IMD Name on a monitor.
19
Web Interface (continued)
System
The System page is shown below:
Use the buttons shown above to send the following commands:
o Ping (Healthy, Unhealthy) – Test a command and response with a monitor. o Get Software Version – Reads the main software version of a monitor. o Get Protocol Version – Reads the protocol version of a monitor. o Get Keypad Version – Reads the keypad software version of a monitor o Get Model Number – Reads the model number of a monitor. o Protocol Standby – Set monitor into “serial ignore” mode, for programming other monitors on same bus o System Reset – Resets the system software on a monitor o Set Power State (Off, On) – Switches the monitor on or off. Note that although the backlight is off, power is still
supplied to monitor even when monitor is set to off.
Message Box
The Message Box frame is shown below:
The Message Box shows the current status of commands being sent and acknowledged, as well as any error messages.
20
Table of Web Interface Commands
Window Management Set Center Set Background Set Curtain Color Menu Controls
Color Key & Image Enhancement Brightness Contrast
Color Temp Preset Configuration Load Save Reset Test Mode Test Mode Blue Only Monochrome
Pixel-to-Pixel Set Protocol Main Pass-Through
Protocol Type
TSL Status
IMD State
Status Display
Timecode
Audio Monitor
OSD Configuration & IMD Show IMD Address
Set IMD Inensity
Send IMD Alignment
Send IMD Color
Send IMD String
Send IMD Name
Get IMD Name
Show IMD
Show IMD Name
Ping
Get Software Version
Get Protocol Version
System Get Keypad Version
Get Model Number
Protocol Standby
System Reset
Set Power State
Aspect Ratio Set Marker
Web Interface (continued)
4:3, Scaled 4:3, 16:9, 16:9 Centered Off, On Off, On Transparent, 50% Gray, Black Blue, Red, Green, White, Black Menu, Select, Up, Down, F1, F2 Power
Increase Value, Decrease Value, Default, Set Value, Get Value Increase Value, Decrease Value, Default, Set Value, Get Value Increase Value, Decrease Value, Default, Set Value, Get Value
55K, 65K, 93K, Linear Mfg, User 1, User 2, User 3, User 4, User 5, User 6 User 1, User 2, User 3, User 4, User 5, User 6 Restore Test Mode Defaults Off, On Off, On Off, On Image Video, TSL On, Off Verify Protocol Type Verify TSL Status Off, On Off, On Off, LTC, VITC Off, On Display Address On-Screen Set Value Left, Center, Right Red, Green, Yellow/Amber Send String Send Name Get Name Display IMD String On-Screem Display IMD Name On-Screen Healthy, Unhealthy Display Software Version Display Protocol Version Display Keypad Version Display Model Number Enable Protocol Standby Enable System Reset Off, On
21
Specifications
CONTROL INPUT
Connector 1 x RJ12 (Modular 6P6C)
Physical Layer
RS-422 Data Protocols
Image Video:
Start Bits 1 Data Bits 7 Parity Even Stop Bits 1 Baud Rate 38400
TSL v4.0 Protocol:
Start Bits 1 Data Bits 8 Parity Even Stop Bits 1 Baud Rate 38400
Pinout
Pin No. Signal
1 N/C 2 Ground 3 Rx+ 4 Rx­5 N/C 6 N/C
MONITOR OUTPUTS
Connectors 4 x RJ12 (Modular 6P6C)
Physical Layer
RS-422 Data Protocol
MEI
Start Bits 1 Data Bits 8 Parity None Stop Bits 1 Baud Rate 57600
Pinout
Pin No. Signal
1 Rx­2 Ground 3 Tx+ 4 Tx­5 N/C 6 Rx+
NETWORK CONNECTION
Connector 1 x RJ45 (Modular 8P8C)
Physical Layer
10BASE-T or 100BASE-T Ethernet Data Protocol
TCP/IP
ELECTRICAL
Power Consumption 3.0A @ 12VDC (36 W) Voltage Requirement 12 VDC
V-PS12-5V-1 Power Supply: Input 100V-240V, 1.5A, 50-60Hz Output 12VDC, 5A, 60W Max
MECHANICAL
Dimensions (w x h x d): 18.96" x 1.72" x 8.37” Rack Height: 1RU
Weight: 5.5 lbs Operating Temperature 32°F to 120°F (0°C to 50 °C)
Storage Temperature -4°F to120°F (-20°C to 50°C) Compliance Œ, FCC-Class A, ANSI-63.4
(Certificates on file) RoHs Do not dispose. Return to
Manufacturer or Authorized Recycle Facility.
22
Specifications (continued)
Warranty
Marshall Electronics warranties to the first consumer that this NCB-1004 LCD monitor will, under normal use, be free from defects in workmanship and materials, when received in its original container, for a period of one year from the purchase date. This warranty is extended to the first consumer only, and proof of purchase is necessary to honor the warranty. If there is no proof of purchase provided with a warranty claim, Marshall Electronics reserves the right not to honor the warranty set forth above. Therefore, labor and parts may be charged to the consumer. This warranty does not apply to the product exterior or cosmetics. Misuse, abnormal handling, alterations or modifications in design or construction void this warranty. It is considered normal for a minimal amount of pixels, not to exceed three, to fail on the periphery of the display active viewing area. Marshall Electronics reserves the option to refuse service for display pixel failure if deemed unobtrusive to effective use of the monitor by our technicians. No sales personnel of the seller or any other person is authorized to make any warranties other than those described above, or to extend the duration of any warranties on behalf of Marshall Electronics, beyond the time period described above. Due to constant effort to improve products and product features, specifications may change without notice.
V1.2
Marshall Electronics, Inc.
1910 East Maple Ave.
Tel: (800) 800-6608 / (310) 333-0606 • Fax: 310-333-0688
www.LCDRacks.com
El Segundo, CA 90245
sales@lcdracks.com
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