HP LD4235 User Manual page 31

To remotely manage and control multiple displays in Tile Mode when using either VGA or DisplayPort video
source, either a RS-232 or Network connection may be used with the HP Network Sign Manager.
If using the RS-232 interface, the displays must be daisy chained with RS-232 cables. Attach one end of a
RS-232 cable to the RS-232 Input connector of the first display and connect to the serial connector of the
media player/computer. Then attach one end of an RS-232 cable to the RS-232 Output connector and the
other end to the RS-232 Input connector of the next display and continue to connect the RS-232 cables
between each display in the tiled matrix.
If using a Network connection, just attach each display to a network hub or access point using a CAT-5 cable,
and HP Network Sign Manager will locate each network attached display. The HP Network Sign Manager will
allow users to select any display or assigned group of displays to manage and control. If the display is
already attached to the network for VOE, there is no further action required. The HP Network Sign Manager
will detect the displays via its search function (See the HP Network Sign Manager Users Guide provided with
the display for more details).
Multiple displays may also be controlled and managed with the IR Remote Control.
NOTE: The number of displays that can be connected by daisy chain to one media player/computer might
vary depending on the signal status and cable loss. If the signal status is good, and there is no cable loss, it is
possible to connect up to 25 displays for DP and 12 displays for RGB/VGA in a daisy chain from one media
player/computer.
If you are going to play video that is copy protected with High-bandwidth Digital Content Protection (HDCP),
you must use DisplayPort as the video source, and you are limited to a maximum of six displays in the daisy
chain which can support HDCP.
When using Tile Mode, the display ID can be set in the display OSD with the IR Remote Control, the display
control panel, or for Network attached displays, the display ID can be set with the HP Network Sign Manager
software (See the HP Network Sign Manager User Guide provided with the display for more details).
Connecting to a Digital Signage media player or computer 21