Agilent Technologies 16750A Weather Radio User Manual


 
174
Chapter 3: Reference
Error Messages
1 If (complex event list)
occurs 1 time
then goto next
2 If anything
occurs 1 time
then Goto Next
3 If (complex event list)
occurs 1 time
then Trigger and fill memory
In 333/400 Mb/s State Modes, the trigger sequence compiler must always
add some additional complexity to the compiled expression for the first
sequence level that is not needed in subsequent sequence levels.
Additional complexity is also required in the first sequence level for the
following 2 conditions:
a. When using the "Find pattern1, or reset on pattern2" trigger function in
333/400 Mb/s State Modes, the event list of the first sequence level
must be combined with reset branch of each subsequent sequence
level by the trigger compiler in order to evaluate the parallelized
samples.
b. When using double edge clocking mode (J Clk rising and falling edges)
in 333 Mb/s State Mode, an additional pattern resource is allocated and
combined with the event list in the first sequence level by the trigger
compiler to prevent triggering on an initial garbage state.
Inserting an "If anything" state as the first state can simplify the complexity
of the compiled event list in the first sequence level and subsequent "If/
Else" sequence levels. The disadvantage is that the sequence will then miss
the first state after the reset condition is met in an "If/Else" sequence level.
If the following sequence does not compile:
1 If (complex event list)
occurs 1 time
then Goto Next
3 If (complex event list)
then Trigger and fill memory
Else if (complex event list)
then Goto 1
This one may:
1 If anything
occurs 1 time
then Goto Next
2 If (complex event list)
occurs 1 time
then Goto Next
3 If (complex event list)
then Trigger and fill memory
Else if (complex event list)
then Goto 1