The National Instruments PCI-4021 is a PCI switch controller for SCXI systems. It provides switch-control communication, not scan-trigger generation.
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Key product information and technical features.
The PCI-4021 links a computer to SCXI modules through an external adapter and control cable.
In scanning systems, switch control and triggering are separate functions. NI documents the 4021 as a controller without triggering capabilities; an NI DMM supplies triggers in the documented scanning configurations.
Verified product specifications.
| Host interface | PCI |
|---|---|
| External control connector | 9-pin round AUX |
| Trigger-generation capability | Not supported |
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Manufacturer
Computer interface
SCXI switch controller
SCXI
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Product-specific answers based on available technical information.
No. NI identifies the 4021 as a switch controller without triggering capabilities. A separate triggering device is needed for scanning.
Yes. The installation guide lists NI-SWITCH software as a requirement.
No. This record is the PCI-4021; NI documentation distinguishes PCI and PXI versions.