IAI SP-20000C-USB User Manual page 79

Acquisition
"Non-Active"
Active
Sequence Index
can be changed
Frame Start
Trigger In
Frame
Active Out
Sequence Index
Stop
(14) Sequence Repetition
If Trigger Sequence is selected, and if the Sequence ROI Next Index parameter for the Index Table is
set to OFF, the value of Sequence Repetition becomes valid. The entire Index Table will then repeat
as set in Sequence Repetition.
After the acquisition sarts, the index table is executed from Index 0 by the external trigger. And when
the Index Table is finished, the value of Sequence Repetition is decremented internally. In this case,
if the result of the decrement is not "0", the index table starts from Index 0 again. If the result of the
decrement is 0, the status changes to Acquisition Stop and can not accept the external trigger.
The following chart shows the flow chart.
SP-20000M-USB / SP-20000C-USB
"TL Params Locked = 1"
+
"Acquisition Start"
"Active"
Sequence Index cannot be changed
Sequence
Sequenc
Index
e
Execute from
Index
Index 0
Execute
from
Index 0
Detect
Sequence
Next Index
=Off setting
Sequence Index
Executing
Fig.35 Sequence ROI trigger timing chart
"Acquisition Stop"
+
"TL Params Locked = 0"
"Non-Active"
Sequence Index Sequence Index cannot be changed
Can be changed
Sequence
Repetition
Detect
Sequence
decrement
Index
value=0
Pointer
&
Repetition Sequence
Count
Index
Clear Execute
Index 0
Sequence Index Sequence Index
Executing
Stop
- 77 -
"TL Params Locked = 1"
+
"Acquisition Start"
"Acquisition Start"
"Active" "Non-Active"
Sequence
Index
Execcute
from
from Index
0
Sequence Index
Stop
"Active"
Sequence Index
Executing