RIGOL  Chapter 4 Troubleshooting&Message 
User’s Guide for DSA800/E Series 
471  Calibration data of TG lost. 
Indicates that the calibration data before delivery or last valid calibration 
data has been lost. Please report the error to your RIGOL sales or 
technical support team. 
472  USB firmwarte lost. 
473  Device information lost. 
474  Data of menu, help, message and font lost. 
475  Preset data to load is damaged.