RIGOL DS6000 Series - Manual (Page 166)

RIGOL 7 Protocol Decoding
DS6000 User’s Guide 7-8
8. The Error Expression during Decoding
DS6000 makes full use of the resources such as color and view to express the
results of the protocol decoding effectively and let users find the desired
information quickly.
End Frame Error:
Errors generated when the end frame condition is not met. When the stop bit is
set to 1.5, red error mark (note that the red mark is displayed in different modes
according to the horizontal time base setting; when the horizontal time base is
relatively smaller, is displayed; otherwise, is displayed) will be displayed if
the stop bit is less than 1.5.
Check Error:
When check errors are detected during the decoding, the data will be filled with
red batches. For example, when the transmitting terminal is set to none check
and the decoder is set to odd check, the following errors appear.