How to use the scope as an android tablet With sound!0) Open your scope and make full backup of the MicroSD card, with the "HDD Raw Copy Tool" for eg. (compressed image takes ~500MB of disk space only)
1) Find any USB headphones (or other USB sound device identified as headphones with default driver in windows. I've checked two old ones and both are working.).
2) Find a USB hub.
3) Find a USB keyboard with the "home" key.
4) Connect 1), 2) and 3) to the scope. (Reboot was not required in my case, press "win+n" to access system notifications bar, sound levels and settings).
5) Install some simple launcher:
adb connect
adb install yourSimpleLauncherName.apk
6) Install chrome (the last version for the android 7 is chrome 119.0.6045.194, probably, it will argue for absence of play services, but will launch nevertheless).
7) PRESS "Stop" BUTTON (it's required to release CPU resources).
8 ) Press "Home" button on the USB keyboard, select yourSimpleLauncherName and press "always". (This will substitute the com.rigol.launcher, but scope should initialize successfully anyway).
9) Now on boot yourSimpleLauncher should always launch before the "com.rigol.scope" application, and you should be able to switch to yourSimpleLauncher with the "home" key, or with the "alt+tab" keys. (Don't forget to press the "Stop" button to release CPU resources).
10) Enjoy chrome browsing and 1080p YouTube videos with sound and no frame drops.11) OPTIONAL. If you plan to boot into yourSimpleLauncher and be able to launch the scope app any time later:
- install MyAndroidTools,
- disable "GuardServiceReceiver" for the "com.rigol.launcher" application (MyAndroidTools/apps/com.rigol.launcher/see all component info/broadcast receiver/GuardServiceReceiver).
This will prevent FPGA initialization, reduce CPU usage, thus reducing power consumption (from 2.5 A to 1.2 - 1.4 A @12V), chip temperature, and increase device sustainability.
But in this way, you can launch the RIGOL.SCOPE app from the launcher any time later.