RIGOL MSO/DS2000A Series - Manual (Page 191)

Chapter 8 Protocol Decoding RIGOL
MSO2000A/DS2000A User’s Guide 8-13
Figure 8-9 Address Information during Decoding
7. Error Expressions during Decoding
When the ACK (ACKnowledge Character) is not met, the red error marks as
shown in the figure below will be displayed.
Note: 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.
Figure 8-10 Error Expressions during Decoding
Address Information
ACK=1