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NI 9425

32-Channel, 24 V, 7 µs, Sinking Digital Input Module

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  • 32-channel, 7 µs sinking digital inputs
  • Compatible with 12 and 24 V levels
  • Industry-standard 37-pin D-Sub connector
  • Hot-swappable operation
  • Extreme industrial certifications/ratings
  • -40 to 70 °C operating range


The National Instruments 9425 is a 32-channel, 7 µs, sinking digital input C Series module for any NI CompactDAQ or CompactRIO chassis. Each channel is compatible with 12 and 24 V levels and features 1,000 Vrms of transient overvoltage protection from channel to earth ground. The NI 9425 contains an industry-standard 37-pin D-Sub connector for low-cost cabling to a wide variety of 37-pin accessories available from NI or other vendors. It works with industrial logic levels and signals for direct connection to a wide array of industrial switches, transducers, and other devices.

The NI 9425 is a static digital module, so you can use it only to perform software-timed or static operations when installed in an NI CompactDAQ chassis.

The NI 9933 (or other 37-pin D-Sub connector) is required for use with the NI 9425. The NI 9933 includes a screw-terminal connector with strain relief as well as a D-Sub solder cup backshell for creating custom cable assemblies.

Specifications Documents

View Data Sheet

Specifications Summary

General
Product Name NI 9425
Product Family Industrial I/O
Form Factor CompactDAQ , CompactRIO
Part Number 779139-01 , 780176-01
Operating System/Target Windows , Real-Time
Measurement Type Digital
Isolation Type Ch-Earth Ground Isolation
RoHS Compliant Yes
Analog Input
Channels 0
Single-Ended Channels 0
Differential Channels 0
Analog Output
Channels 0
Digital I/O
Bidirectional Channels 0
Input-Only Channels 32
Output-Only Channels 0
Timing Software
Maximum Clock Rate 140 kHz
Logic Levels 24 V , 12 V
Input Current Flow Sinking
Supports Handshaking I/O? No
Supports Pattern I/O? Yes
Maximum Input Range 0 V - 24 V
Counter/Timers
Counters 0
Physical Specifications
Length 9 cm
Width 2.3 cm
I/O Connector 37-pin D-Sub
Minimum Operating Temperature -40 °C
Maximum Operating Temperature 70 °C
Minimum Storage Temperature -40 °C
Maximum Storage Temperature 85 °C
Timing/Triggering/Synchronization
Triggering Digital
Triggers cDAQ Chassis Yes

NI 9425 Packages

To use the NI 9425 , you need all items in the diagram below. Select Option 1 if you already own a C Series System, or Option 2 if you do not already own a chassis, controller, or software.

Roll over the icons below to learn why you need each item in the system

C Series System
1 Terminal Block NI 9425 Chassis PC/Controller Software
NI 9425 and Accessories Only
NI 9425
779139-01 Qty $ 341 each
780176-01 Qty $ 500 each

Required Accessories
Terminal Block -
Qty $ 134 each

Package Price: $ 475
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Select a Platform and Configure a System
Create a complete system with the NI 9425 and its accessories. However, the NI 9425 is compatible with multiple C Series Platforms, NI CompactDAQ and CompactRIO. Please review the comparison information below and select a platform to begin configuring your system.
Configure System Configure System
NI CompactDAQ CompactRIO
video
video
Mixed-Measurements

Customizable with a variety of chassis and module types.
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Deterministic & Rugged

Time-Critical Control & Monitoring
Learn more

Features NI CompactDAQ CompactRIO
USB, Wi-Fi, Ethernet Ethernet
-20 to 50 C -40 to 70 C
LabVIEW, C, C++, VB.NET, C#.NET LabVIEW, LabVIEW RT, LabVIEW FPGA only
PC Based Headless Embedded Controller (Standalone or network)
Laboratory - 30 g shock and 0.3 grms operational vibration Field Work - 50 g shock (Class I, Div 2 for Hazardous Locations)
Since your device does not have direct signal connectivity, you need a terminal block to act as an interface between your sensors/signals and your device. A terminal block provides easy access to the inputs and outputs of your hardware.
The chassis provides rugged, modular housing for your controller (if using CompactRIO) and C Series modules. A high-performance backplane in the chassis contains the system's data, timing, and triggering buses.
The controller runs your application and interfaces with your C Series modules. If you are using the NI CompactDAQ platform, then a Personal Computer (PC) will act as the controller of your system. However, if the CompactRIO platform is used then an embedded real-time controller will be used instead.
You need software to interface with your hardware and to collect, analyze, present, and store your measurements. This device is compatible with a different programming languages depending on the platform used. If you are using the NI CompactDAQ platform then this device is compatible with LabVIEW, C/C++, Visual Basic, and .NET. However, if the CompactRIO platform is used then this device requires the LabVIEW FPGA Module (sold separately), the LabVIEW Real-Time Module (sold separately) and NI-RIO driver software (included with the hardware).

You have selected United States as the country where you will use the product(s) (change).

System Assurance Programs

Reduce your setup time and total cost of ownership, and get a system you can use out of the box with National Instruments system assurance programs. System assurance programs include:

  • Installation and integration test of all individual hardware
  • Courtesy installation of system driver sets and application development environments
  • Extended warranty and calibration coverage for up to five years
  • Custom documentation plus a custom restore and startup utility

This service is only available for PXI, NI CompactRIO, and NI Compact FieldPoint systems.

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

For more information about your warranty options:

Calibration

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.

Training

NI training is the fastest, most certain route to productivity with NI tools and successful application development.

Repair Services

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.

Technical Support

ni.com/support