Rigol MSO1000Z series - Page 166

RIGOL Chapter 8 Protocol Decoding
8-10 MSO1000Z/DS1000Z User’s Guide
Wherein, there are even number of 1 in the 5-bit data 10111 and the check bit
should be 1; but the check bit detected on the TX is 0, thus check error occurs.
Note: Two error marks will be displayed when end frame error and check error
are detected at the same time.
(01111101, LSB)
Frame End Error
The check bit detected is 0
Frame Check Error