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Chapter 2 Using the SCXI-1127/1128
© National Instruments Corporation 2-13 SCXI-1127/1128 User Manual
Figure 2-11.
Hardware Scanning Flowchart
The channel scan list is
downloaded to SCXI-1127/1128.
The first channel
in the scan list is selected.
Switch to the next channel
in the scan list.
Pulse SCANADVD line.
Return to the top of the scan list
and select the first channel in the list.
The SCXI-1127/1128 is now armed
to respond to triggers on EXT_TRIG_IN.
Reset
(Synchronous Scanning)
Ye s
No
No
Ye s
Ye s
Ye s
No
No
EXT_TRIG_IN
pulsed?
Handshake
scanning?
Is the
SCXI-1127/1128
armed?
Is the
SCXI-1127/1128
at the end of the
scan list?
Stay at the selected channel in the scan list.