Table of Contents
Advertisement
How Do I ... ?
226
The event definitions shown above require that the trigger pod inputs are
driven with positive pulses to select the measurement blocks. During the
measurement the pod input lines must be zero. Otherwise no errors are
detected. This should not be a problem because due to the internal
pipelining it takes already 22 sequencer clock periods until the first error
can be detected (see also "What You Need to Consider Before Using
Events" on page 147).
The events that cause the jump to the different measurement blocks can be
deferred or immediate. The Ok and Error events, however, must be
deferred, and the Error event must have a higher priority than the Ok
event.
If you want to save events, the Ok event could be replaced by the
DEFAULT event.
How Can I Execute Different Tests Embedded
in One Sequence?
Starting at a certain block label is fairly simple—the CMD 0/1 command,
the VXI trigger lines, or the trigger pod can be used to switch between
several start blocks.
The following example shows how the sequence can be terminated after
executing a certain block.
We use the DEFAULT event which needs not be defined. It occurs
automatically at the end of the block.
Figure 132
Sequence and Branch Tables
In this example just block 2 is executed. By moving the START label, any
other block can be run.
HP 81200 Data Generator/Analyzer Platform User Guide, Revision 2.1
How Do I Use Events?
If
Go to
DEFAULT
END
DEFAULT
END
DEFAULT
END
Trig. VXI-T01
0
00
0
00
0
00
Advertisement
Table of Contents
