Description
The NI-9423 comes in two part numbers, 783735-01 for the Spring Terminal version and 779009-01 for the Screw Terminal version. This module falls under the C Series Digital I/O category, designed to deliver robust performance for various applications. The NI-9423 is specifically known for its Screw Terminal configuration, capable of handling 30 V with an ultra-fast update rate of 1 μs. It is equipped with 8 sinking input channels, making it suitable for applications requiring high-speed data acquisition from digital sensors.
One of the key features of the NI-9423 is its compatibility with 12V and 24V digital I/O, offering flexibility in connecting with a wide range of digital devices. The module boasts an impressive digital I/O to earth ground isolation of 20 Vrms, ensuring reliable performance in electrically noisy environments.
For software compatibility, the NI-9423 is designed to work seamlessly with the LabVIEW Professional Development System for Windows. This integration allows for sophisticated programming and automation capabilities, enhancing the module’s utility in complex digital I/O tasks.
In terms of power consumption, the NI-9423 is efficient, requiring up to 290 mW in active mode and a maximum of 7 mW in sleep mode. Despite its powerful features, the module is compact, weighing only 5.3 oz, and is designed to operate in a wide temperature range from -40 °C to 70 °C, with a storage temperature range extending up to -40 °C to 85 °C. Additionally, it can withstand operating humidity levels from 10 to 90% RH and storage humidity levels from 5 to 95% RH (non-condensing), ensuring reliability under various environmental conditions.
| Specification | Details |
|---|---|
| Part Numbers | 783735-01 (Spring Terminal), 779009-01 (Screw Terminal) |
| Category | C Series Digital I/O |
| Model | NI-9423 |
| Description | NI 9423 Screw Term, 30 V, 1 us, 8-Ch Sinking DI Module |
| Logic Levels | 12V, 24V digital I/O |
| Digital Input Channels | 8 (Sinking Input) |
| Maximum Update Rate | 1 μs |
| Digital I/O Ch-Earth Ground Isolation | 20 Vrms |
| Programming Software | LabVIEW Professional Development System for Windows |
| Power Consumption | Active: up to 290 mW, Sleep: max 7 mW |
| Weight | 5.3 oz |
| Operating Temperature Range | -40 °C to 70 °C |
| Storage Temperature Range | -40 °C to 85 °C |
| Operating and Storage Humidity Range | Operating: 10 to 90% RH, Storage: 5 to 95% RH (non-condensing) | Question 1: How many sinking DI channels does the NI-9423 have?



