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3
planning and Configuring a Wall layout
Planning
In order for the software to uniquely identify and communicate with each display, the software must be correctly
configured with the following settings:
The number of rows and columns of displays in the video wall.
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The communications interface type for each display (RS232 or LAN).
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The connection RS232 COM Port or IP address of each display.
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The MONITOR ID of each display.
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The order in which displays should be measured and calibrated.
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For large video walls where it is necessary to use a ladder or platform to access the screen of each display, careful
consideration should be made of the layout order in order to minimize physical movement and in turn maximize the
efficiency and speed of the calibration process.
For example, if using a ladder, it may be easier to calibrate a vertical column of displays, and then move the ladder
across to the next column. Similarly if using a horizontal platform, it may be easier to calibrate a horizontal row of
displays, and then move the platform up or down to the next row.
For very large video walls, for example larger than a 5x5, it may be more efficient to split the calibration into two
separate projects and divide the wall into two. However keep in mind that depending on the calibration Target type
being used, it may be necessary to measure all of the displays in the video wall in order to determine the dimmest
display.
The physical wiring connection order between displays does not dictate the order in which the displays are measured
and calibrated, since MONITOR IDs and IP addresses can be configured for each display.
Configuring Connections
Displays can be connected to the host PC via either RS232 or LAN, in several different configurations. A wireless
LAN connection can also be used from the host PC if using a wireless access point or router.
Keep in mind the following points when configuring and connecting displays:
If using RS232 to connect displays using a daisy-chain, each display on the chain must have a unique
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Monitor ID (set on the display's OSD).
If using RS232, displays should be connected using an RS232 serial NULL modem cable.
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The RS232 connection from the host PC should connect to the RS232 IN on the first display.
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The RS232 OUT of a display should connect to the RS232 IN on the next display in the daisy-chain.
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If using LAN to connect to one or more displays, make sure that the IP address of each display is set
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correctly and that each display has a unique IP address (set using a web browser). Also make sure that the
displays are on the same subnet as the host PC being used.
Examples of various connection configurations are shown on the following pages.
NEC Display Wall Calibrator - UsEr's GUiDE | 1
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