NEC MultiSync LCD4020, User Manual

Page: 41 / 54

English
English-35
Using the LCD with RS-232C
This LCD monitor can be controlled via personal computer
or wireless remote control using an RS-232C connection.
MONITOR ID and IR CONTROL
Using one PC or one infra-red wireless controller, up to 26
individual LCD4020/LCD4620 monitors can be controlled
through a daisy chain via RS-232C connection.
1. Connect PC and LCD4020/LCD4620.
Connect a PC’s RS-232C control output to the
LCD4020/LCD4620’s RS-232C input. You can then
connect the RS-232C output from the LCD4020/
LCD4620 to another LCD4020/LCD4620’s RS-232C
input. Up to 26 monitors can be connected using RS-
232C.
2. Set Monitor ID and IR Control mode.
For proper operation, the Monitor ID should be
set in the OSD menu of each monitor that is in the
chain. The Monitor ID can be set under the “MULTI
DISPLAY” menu in the OSD. The Monitor ID number
can be set within a range from 1 to 26. No two
monitors should share the same Monitor ID number.
It is recommended to number each monitor in a daisy
chain sequentially from 1. The first monitor in the
daisy chain is designated as the primary monitor.
Subsequent monitors with the chain are secondary
monitors.
In the “MULTI DISPLAY” menu on the first monitor
in the RS-232C daisy chain set the “IR CONTROL” to
“PRIMARY”.
Set the “IR CONTROL” to “SECONDARY” on all other
monitors.
3. Press the “DISPLAY” button on the remote
control while aiming at the “PRIMARY”
monitor.
The Information OSD will be shown at top left side of
the screen.
MONITOR ID:
Displays the ID number of the
current monitor within the daisy chain.
TARGET ID:
Displays the ID number of the monitor
that to be controlled via daisy chain from the current
monitor.
Press the “+” or “-” buttons to change the “Target
ID” to show the ID number of the monitor to be
controlled. To control all of the daisy chained
monitors simultaneously, select “ALL” as the “Target
ID.”
NOTE:
If the monitor is in ECO Standby mode, RS-
232C functionality is stopped.
4. Use the wireless remote controller to control
the “SECONDARY” monitor while aiming at
the “PRIMARY” monitor.
The “MENU OSD” will appear on the selected target
monitor.
NOTE:
If the “ID No.” mode select OSD is showing,
press the “DISPLAY” button on the remote control
while pointing at the “PRIMARY” monitor to clear
this OSD.
HINT:
If you lost control due to the incorrect setting
of “IR CONTROL”, pressing the “DISPLAY” button
on the remote control for 5 or more seconds will reset
the “IR CONTROL” menu to “NORMAL” function.
Monitor ID:1
Target ID
:5
DVI
AUDIO: IN1
SIZE:FULL
1024 X 768
48KHz/60Hz
Input Source
Picture Size
Input Signal Information
ID number assigned to current monitor *1
ID number assigned monitor to be
controlled via RS-232C *2
*1: "IR control" should be set "Primary" or "Secondary".
*2: "IR control" should be set "Primary".