User`s guide

10 Serial Decode/Lister
300 InfiniiVision Oscilloscopes User’s Guide
Counters
• The FRAMES counter gives the total number of completed remote, data, overload, and
active error frames.
• The OVLD counter gives the total number of completed overload frames and their
percentage of the total number of frames.
• The ERR counter gives the total number of completed active error frames and their
percentage of the total number of frames.
• The UTIL (bus load) indicator measures the percentage of time the bus is active. The
calculation is done on 330 ms periods, approximately every 400 ms.
Example: If a data frame contains an active error flag, both the FRAMES counter and the
ERR counter will be incremented. If a data frame contains an error that is not an active
error it is considered a partial frame and no counters are incremented.
Overload
Frame Count
and Percent
Error Frame
Count and
Percent
Bus Utilization
Percentage
Total Frame
Count