NEC MA Series 43" 4K Commercial Display with Media Player and Raspberry Pi Compute Module 4 SoC - Manual (Page 74)

English−70
Proof of Play
This function allows sending of messages for the current status of the monitor by self-diagnosis.
For the Proof of Play function including self-diagnosis, please see the “External_Control.pdf”. See page 84 .
Check item Message
a INPUT DisplayPort1/DisplayPort2/HDMI1/HDMI2/OPTION*/COMPUTE MODULE* 1
b Resolution e.g. (H)1920, (V)1080, (H)3840, (V)2160 or No signal or Invalid signal
c Audio signal Audio in or No Audio in or N/A
d Picture Image Normal Picture or No Picture
e AUDIO OUT Normal Audio or No Audio
f TIME (year)/(month)/(day)/(hour)/(minutes)/(second)
g EXPANSION DATA
00h: Normal Proof of Play event
01h: Proof of Play event is “last power on time”
20h: Contents Copy from USB
21h: Contents Copy form network folder
30h: Contents Copy Success
31h: Contents Copy Error (No media)
32h: Contents Copy Error (Connect error)
33h: Contents Copy Error (Out of disk space)
34h: Contents Copy Error (Read/Write error)
40h: Human detected (Human sensor Status)
41h: Human detect cleared (Human Sensor Status)
*: This function depends on which Option Board is installed in the monitor.
*
1 : This input is available when the optional Raspberry Pi Compute Module Interface Board and Raspberry Pi Compute Module are installed.
Example:
a HDMI1
b 3840 x 2160
c Audio in
d Normal Picture
e Normal Audio
f 2020/1/1/0h/0m/0s
g 30h: Contents Copy Success