Microscan QX Hawk User Manual page 211

Parameters
Latch Mode 2 (Unlatch Opposite Condition)
The programmable output is activated when the Output On condition has been met and
held active until the opposite condition selected under Output On has been met.
For example, if No Read is enabled under Output On, the programmable output will go
active on a No Read and remain active until the opposite condition, a good read, occurs.
If the Output Condition is set to Read Cycle Data Valid, then the read cycle will continue
but every new Read Cycle Data Valid event causes the output to change state to the
opposite condition. This provides a toggle event per every read cycle output. The only
known outout state will be the on a power-on or reset. After reading begins, the state
becomes undetermined. Only the state change itself has meaning—not the absolute value.
Latch Mode 3 (Unlatch Re-enter Read Cycle)
The programmable output is activated when the Output On condition has been met and
held active until a new read cycle begins.
Note: All of the Output On modes are inhibited when any Diagnostic Warning is active
for Output 1.
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QX Hawk Industrial Imager User's Manual