National Instruments 1128 用户手册

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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)

Yes

No

No

Yes

Yes

Yes

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.