Rigol MSO4000 User Manual page 183

8 Protocol Decoding
interface as shown in the figure below. If a USB storage device is currently
connected to the instrument, press Export to export the data table to the
external USB storage device in CSV format.
9. Error Expressions during Decoding
When the clock for a frame in SPI does not contain enough visible waveform to
cover the data frame, the data will be filled with red patches. For example, when
Data Bits is set to 7 and SCLK slope is set to rising edge, a decoding error will be
generated.
MSO4000D/S4000 User's Guide
RIGOL
Not enough
for 7 bits
8-15