NI USB-485/4 interfaces transform your Universal Serial Bus (USB) port into four asynchronous serial ports for communication with RS485 and RS422 serial devices. USB-485/4 ports use the NI-Serial driver to work as standard serial ports in any Windows application. NI-Serial also includes the NI-VISA API for accessing advanced serial port features and writing interface-independent code that is compatible with any interface that supports VISA.
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Extended Warranties
National Instruments designs and manufactures all products to minimize failures, however unexpected failures can still occur. Extended warranties provide a fixed economical price at the time of system purchase, covering any repair costs for up to three years. In addition, they offer the following benefits:
Significant cost savings compared to individual repair incidents
Fault location, diagnostics, and repair by NI any time the system product fails
All parts and labor costs covered as well as any adjustments needed to restore the hardware to manufacturing specifications
NI recognizes the need to maintain properly calibrated devices for high-accuracy measurements. NI provides manual calibration procedures, services to recalibrate your products, and automated calibration software to calibrate many NI measurement products.
Return your registered product under warranty at no additional labor and parts cost. NI offers fault location, diagnostics, and repair any time the system fails as well as any adjustments needed to restore the hardware to manufacturing specifications.
