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External Control NEC LCD Monitor

Rev.1.0(G5)

INDEX

I. Application ............................................................................................................................................. 4

II. Preparation ........................................................................................................................................... 5

2. Connectors and wiring ......................................................................................................................... 5

2.1 RS-232C Remote control .................................................................................................................... 5

2.2 LAN control ......................................................................................................................................... 5

III. Communication specification ............................................................................................................ 6

3. Communication Parameter .................................................................................................................. 6

3.1 RS-232C Remote control .................................................................................................................... 6

3.2 LAN control ......................................................................................................................................... 6

3.3 Communication timing ....................................................................................................................... 6

4. Communication Format ........................................................................................................................ 7

4.1 Header block format (fixed length) ................................................................................................... 8

4.2 Message block format ...................................................................................................................... 10

4.3 Check code ....................................................................................................................................... 12

4.4 Delimiter ........................................................................................................................................... 12

5. Message type ...................................................................................................................................... 13

5.1 Get current Parameter from a monitor. .......................................................................................... 13

5.2 "Get parameter" reply ...................................................................................................................... 14

5.3 Set parameter ................................................................................................................................... 16

5.4 "Set parameter" reply ...................................................................................................................... 17

5.5 Commands ........................................................................................................................................ 18

5.5.1 Save Current Settings. .................................................................................................................. 18

5.5.2 Get Timing Report and Timing reply. ........................................................................................... 19

5.5.3 NULL Message ............................................................................................................................... 20

IV. Control Commands ........................................................................................................................... 21

6. Typical procedure example ............................................................................................................... 21

6.1. How to change the “Backlight” setting. ........................................................................................ 21

6.2. How to read the measurement value of the built-in temperature sensors. ................................. 24

6.3. Operation Code (OP code) Table .................................................................................................... 27

7. Power control procedure ................................................................................................................... 37

7.1 Power status read ............................................................................................................................ 37

7.2 Power control ................................................................................................................................... 39

8. Asset Data read and write ................................................................................................................. 41

8.1 Asset Data Read Request and reply................................................................................................ 41

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NEC MultiSync C431 Specifications

General

Response time	6.5 ms
Display diagonal	50 \
Display brightness	400 cd/m²
Display technology	LCD
Native aspect ratio	-
Vertical scan range	24 - 85 Hz
Horizontal scan range	31.5 - 91.1 kHz
LED backlighting type	Edge-LED
Display number of colors	1.073 billion colors
Display diagonal (metric)	125.73 cm
Active display area (W x H)	1095 x 616 mm
Supported graphics resolutions	800 x 600 (SVGA), 1024 x 768 (XGA), 1280 x 1024 (SXGA), 1280 x 720 (HD 720), 1280 x 768, 1280 x 800, 1280 x 960, 1360 x 768 (WXGA), 1400 x 1050 (SXGA+), 1440 x 900 (WXGA+), 1600 x 1200 (UXGA), 1680 x 1050 (WSXGA+), 1920 x 1080 (HD 1080), 1920 x 1200 (WUXGA)
USB 2.0 ports quantity	1
Ethernet LAN data rates	10, 100 Mbit/s
Annual energy consumption	110 kWh
Power consumption (standby)	0.5 W
Power consumption (typical)	75 W
USB version	2.0
Ethernet LAN	Yes
HDMI ports quantity	3
Compatible memory cards	MicroSD (TransFlash)
Purpose	Universal
Product type	Group video conferencing system
Product color	Black
Number of persons	- person(s)
Operating hours (hours/days)	24/7
International Protection (IP) code	IP5X, IP2X
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	20 - 80 %
Orientation	Horizontal/Vertical
Certification	CE; EMC B; FCC; PSB; TÜV GS; UL/C-UL / CSA; VCCI
Product design	Digital signage flat panel
Placement supported	Indoor
Bezel width (bottom)	12.4 mm
Panel mounting interface	300 x 300 mm
Audio formats supported	MP3, WAV
Image formats supported	JPG, PNG
Video formats supported	FLV, H.264, MOV, MP4, WMV
Sustainability certificates	RoHS, ENERGY STAR
RMS rated power	20 W
Number of built-in speakers	2
Megapixel	- MP
Image sensor size	- \
Cables included	AC, DisplayPort, HDMI