Vmetro VBAT-PB, User Manual

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6 Commands reference
Statistics menu
Session
- Run
The ' s e s s i o n ' command in the Statistics screen is the
functional equivalent of the ' Tr a c e ' command in the Setup
screen, providing ' Hun ' , ' C o n t i n u e ' and ' Ha l t '
controls for operating the statistics.
To start the statistics function, simply execute
s e s s i o n / R u n
S e i o n
Run
C o n t i n u e
H a l t
All the statistics counters for the target currently selected will then start to
count from zero, and the histograms will be updated according to the update
rate etc. selected under ' Opt i ons /Count O p t i o n s ' (see below.)
- Continue
Cont inue ' resumes counting from the values reached the last time the
statistics was stopped with ' H a l t ' .
- Halt
Function
' Hal t ' stops the statistics session and freezes the histogram screen.
The E u n c t ion command is used to select
between the statistics functions. Three functions are
available, 'Event C o u n t i n g ' , ' E u s
U t i l i z a t i o n ' , and ' Bus T r a n s f e r R a t e '
the latter is only available for VMEbus.
Function tions
x E v e n t C o u n t i n .
Bus U t i l i z a t i o n
Bus Transfer Rate
Event Counting
The ' E v e n t C o u n t i n g ' sub-command invokes the statistics function that
provides real-time histograms of the occurrence of four user-specified events.
For VMEbus, this function also includes the distribution of bus cycles among
the four Bus Levels, counted among all cycles or only cycles matching the
selected events (controlled by ' Q p t i o n s /Count O p t i o n s , Q u a l i f i e r '
see below).
98 V B T - 3 2 5 User's Manual V M E T R O