2 User Interface
2.15 Status Bar
<Error Number>,<Error>
Where <Error Number> and <Error> are those shown on the Show Errors screen
Backwards
Compatibility
Notes
In some legacy analyzers, the Repeat field shows the number of times the message has repeated since
the last time the error queue was cleared. In the X-Series, the Repeat field shows the number of times
the error has repeated since the last intervening error. So the count may very well be different than in
the past even for identical signal conditions
Unlike previous analyzers, in the X-Series all errors are reported through the Message or Status lines
and are logged to the event queue. They never appear as text in the graticule area (as they sometimes
do in previous analyzers) and they are never displayed in the settings panel at the top of the screen (as
they sometimes do, by changing color, in previous analyzers)
As a consequence of the above, the user can only see one status condition (the most recently
generated) without looking at the queue. In the past, at least in the Spectrum Analyzer, multiple status
conditions might display on the right side of the graticule
In general, there is no backwards compatibility specified or guaranteed between the error numbers in
the X-Series and those of earlier products. Error, event, and status processing code in customers’
software will probably need to be rewritten to work with X-Series
In the legacy analyzers, some conditions report as errors and others simply turn on status bits.
Conditions that report as errors often report over and over as long as the condition exists. In the X-
series, all conditions report as start and stop events. Consequently, software that repeatedly queries for
a condition error until it stops reporting will have to be rewritten for the X-series
More Information
The Status Dialog has two screens, selectable by the tabs on the right: History and
Current Conditions:
History
History brings up a screen displaying the front panel message queue in
chronological order, with the newest event at the top. Remember that the front
panel queue contains all of the events generated by front panel actions as well as
error events from all of the SCPI queues. A typical History display appears below:
Spectrum Analyzer Mode User's &Programmer's Reference 148
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