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C751Q
NEC C751Q User Manual
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©2018 NEC
Display Solut
ions, Ltd.
Page
13
of
71
6.
Place the
vented a
ccess c
over, includ
ed with
the
Compute Module
interface board,
on the back
of the dis
play and
tighten t
he two scr
ews
.
Figure
3.1
-5
: Pl
ace the Vent
ed A
ccess Cover
7.
Reconnec
t AC power to the displa
y.
12
14
Table of Contents
Introduction
2
Contents
3
Table of Contents
3
Revision History
6
Basic Features
7
GPIO Summary
9
Requirements
9
Operating System Programming Procedure
9
1 Basic Setup and Configuration Steps
10
2 Installing the Compute Module and NEC Compute Module Interface Board to the Display
11
3 Connections and Internal Operation
14
USB Device Connections to the Compute Module
14
USB Connections for Programming the Compute Module
15
LAN Connections
16
Software Control Via IR Remote
17
4 Preparation
21
5 Operating System Summary
22
6 Preparing and Running the Tools to Make the Compute Module Appear as a Mass Storage Device
25
Using a Windows PC as a Host
25
Using a Raspberry Pi 1, 2, or 3 as a Host
28
7 Miscellaneous Configuration Items
32
Configuring the Correct HDMI Video Level Encoding and Decoding
32
To Disable Overscan (if Black Bars Are Visible on the Sides of the Screen)
33
To Rotate the Screen Image to Portrait Orientation
34
To Enable Support for the IR Remote Receiver Using "Lirc
34
To Test Support for the IR Receiver by Outputting Raw Data
35
Enabling the Serial Port (UART) to the Display and Allowing Application Access
36
Testing Internal Serial Communications to the Display Using the Python Based NEC PD SDK
37
Configuring the Compute Module to Shutdown Using Shutdown Signal from the Display
38
Creating an Image of the Compute Module to Backup or Clone
39
Reading and Setting the Display's Internal Real Time Clock (RTC) from the os
39
Using the Display's Watchdog Timer (WDT)
39
Controlling the Compute Module Cooling Fan
41
Controlling the Compute Module Power
41
Checking and Updating the Display Firmware Version
41
8 Related OSD Settings
43
Compute Module Menu Power Power Supply
43
Compute Module Menu Power Auto Power on
43
Compute Module Menu Service Menu Setting Lock
43
Compute Module Menu Service Menu USB Boot Mode
44
Compute Module Menu Service Menu IR Signal
44
Compute Module Menu Service Menu Monitor Control
44
Compute Module Menu Service Menu Shutdown Signal
45
Compute Module Menu Service Menu Shutdown Signal Power Supply off Delay
45
Compute Module Menu Service Menu WDT
45
Compute Module Menu Service Menu WDT Start up Time
46
Compute Module Menu Service Menu WDT Period Time
46
Control Menu USB External Control
47
Control Menu USB PC Source
47
Control Menu USB USB Power
49
Control Menu CEC CEC
50
Control Menu CEC Search Device
50
Expert Menu Compute Module CM Fan Power
51
Expert Menu Compute Module CM Auto Shutdown
51
9 Useful Information and Commands
53
To Find out the IP Address of the Compute Module from a Terminal Window
53
To Restart from a Terminal Window
53
To Shutdown from a Terminal Window
53
To Run the Raspberry Pi Config Utility from a Terminal Window
53
To Change the Keyboard Layout to US from a Terminal Window
53
To Add and Remove Packages from Raspbian
54
To Update the Raspberry Pi
54
To Install the Python Serial Module
55
To Mount a USB Flash Drive from the Terminal
55
To Access an SMB (Windows Share) Drive from the Raspbian Desktop
55
To List Connected USB Devices
55
To Show Available Disk Space
55
To Show Internal Information about the Raspberry Pi
56
To Download a File to the Current Directory
56
To Find a File by Name
56
To Edit a Protected System Configuration File from the Raspbian Desktop
56
To Install a Minimal Windowing System on Jessie Lite
56
To Prevent the Screen Saver from Blanking the Screen after Several Minutes
57
To Enable IR Remote Control Using CEC from OSMC
57
To Enable IR Remote Control Using Lirc from OSMC
57
Monitoring the System Processes, CPU Usage, and Memory
57
To Enable and Disable Video Output from the Compute Module to the Display
58
10 Troubleshooting
59
11 Codec Licenses
62
12 Python Based NEC PD SDK
63
13 Compute Module Configuration Tool for Raspbian
65
14 External Reference Information
66
15 Frequently Asked Questions
67
16 Known Issues
70
17 Support
71
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NEC C751Q Specifications
General
Brand
NEC
Model
C751Q
Category
Monitor
Language
English
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