NI 9221

The National Instruments 9221 is a C Series module for high-speed measurements with a range of ±60 V. This wider voltage range makes this module well suited for industrial-level, automotive, or even smaller-cell battery measurements.

As with the majority of C Series modules, the NI 9221 is protected from harmful voltage spikes of up to 2,300 Vrms. This means that no harmful voltage within the isolation rating can harm other modules in the system, the chassis, or any connected computer equipment. In addition to the absolute protection from the isolation, there is up to 100 V of overvoltage protection for errant signal connection or unexpected outputs to the channels.

There are two connector options for the NI 9221 - a 10-position screw-terminal connector for direct connectivity and a 25-position D-Sub connector. The industry-standard 25-position D-Sub connector provides for low-cost cabling to a wide variety of accessories available from NI or other vendors. Some vendors also offer custom D-Sub cable fabrication services and provide cables with a pinout that matches your exact application needs.

NI recommends the NI 9932 strain-relief connector accessory for the National Instruments cRIO-9221 analog input module. The NI 9934 (or other 25-pin D-Sub connector) is required to use the NI 9221 with a D-Sub module. The NI 9934 includes a screw-terminal connector with strain relief as well as a D-Sub solder cup backshell for creating custom cable assemblies.

For a 24-bit, ±60 V C Series module with channel-to-channel isolation, consider the NI 9229.

Additional Product Information

Related Information

• NI CompactRIO
• NI CompactRIO Technical Library
• Configure Your NI CompactRIO System
• Configure Your NI CompactDAQ System

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