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4.4.10 Ethernet Check
This is function is used to test the Ethernet network quality.T
he system normal prompt is as follows:
Figure 4-54 Networking check
4.5 Special
The menu of special operations is as shown below:
Figure 4-55 Menu of special operations
The special operations are only for system debugging and
maintenance. Therefore, they are restricted to developers and debuggers of our
company. The menu options of Special are not optional (grey) when logging in the
system as the system administrator.
4.5.1 USB backup
Back up the system data into U disk. U disk is a standard device and the standard USB