Yeah, interesting DS6000 files. First of them is... I don't know, app of some kind.
Text in it:
[Battery] Installation: Yes Consumption: VoltageĀ£? CurrentĀ£? No [Fan] Fan1 Speed: Fan2 Speed: [Temperature] Inlet: Outlet:
Cryptographic verification operation has started, the certification failed!
DS1204B Rigol RIGOL Technologies, Inc. Screen Oscillograph Copyright (c) 2009 Rigol.
Files are all in open format and You can open DS2000, DS4000, DS6000 firmware files
and search for text - battery, temperature, PLUSE