What is a JEITA A measuring standard?

JEITA A stands for Japan Electronic Information Technology Association (Ver 1.0).
JEITA A measuring standard is based on the following conditions:
1. Switch off the Wireless LAN switch
2. Control Panel -> Appearance and Personalization -> Personalization -> Desktop Background 
   Set the picture location to Sony -> Select VAIO Long Battery Life Wallpaper 1600x900 as background.
3. Volume control: Mute
4. Control Panel -> Hardware and Sound -> Sound -> Double-click Speaker/HP playback device -> Dolby tab -> Uncheck Audio Enhancer and Surround Sound

6. Do not change initial settings of McAfee Security Center
7. VAIO Control Center -> Display -> Automatic Brightness Settings -> Uncheck Adjust brightness automatically.
8. Right-click desktop -> Graphics Properties -> Power -> Power Features -> Graphics Power Plan Settings 
    Select On battery
    Uncheck Display Power Saving Technology

   
Power Plan 
- Select Power saver

- Go to Change advanced power settings -> Advanced settings tab
Put the computer to sleep - Never
Turn off display After - Never
Dim the display  - Never

- Go to Change advanced power settings -> VAIO Power Management tab
Refresh Rate - [40Hz]

- Go to Change advanced power settings -> Advanced settings tab -> battery
Critical battery level - On battery: 1%

JEITA Measuring Method A:
Display Brightness
1. Go to Power Options -> Advanced settings
    Display Brightness -  28%

2. MPEG file for the measurement is reproduced continuously with WMP.
    Do not change WMP size.
    Do not set full-screen.
    Download Site: https://it.jeita.or.jp/mobile/down.html