PCI-6225

The PCI-6225 is a PCI Multifunction I/O Device from National Instruments, designed for high-channel-count data acquisition, voltage measurement, digital control, and automated test applications. As an M Series DAQ device, the NI PCI-6225 provides analog input, analog output, digital I/O, counter/timer, and triggering functions on a standard PCI platform. It features 80 analog input channels, 16-bit resolution, a maximum sampling rate of 250 kS/s, 2 analog output channels, and 24 digital I/O channels, making it suitable for laboratory automation, research, design verification, data logging, and manufacturing test applications.

The NI PCI-6225 is designed for users who need to acquire a large number of analog signals in a PC-based measurement system. Its analog input channels can be configured as 80 single-ended or 40 differential inputs, allowing users to choose between maximum channel density or improved noise rejection depending on the application. With 16-bit resolution, the PCI-6225 provides reliable measurement performance for general-purpose DAQ tasks. Its 250 kS/s sampling rate is suitable for multi-channel voltage measurement, sensor monitoring, and data logging applications where stable and repeatable acquisition is required.

In terms of analog input performance, the PCI-6225 Multifunction I/O Device supports DC input coupling and multiple input ranges, including ±0.2 V, ±1 V, ±5 V, and ±10 V. These selectable ranges allow engineers to match the input configuration to different signal levels. The module can be used to measure voltage signals from sensors, circuits, test fixtures, and industrial devices, making it useful for applications such as temperature monitoring, pressure measurement, battery testing, voltage logging, and electronic functional test.

In addition to analog input capability, the National Instruments PCI-6225 includes 2 analog output channels for generating voltage signals, control outputs, or test stimulus signals. These analog outputs can be used for device control, sensor simulation, automated test sequencing, and basic signal generation. The device also provides 24 digital I/O channels, allowing users to monitor digital states, control external equipment, communicate with test fixtures, and perform digital control operations in a PCI-based DAQ system.

The NI PCI-6225 also includes two 32-bit counter/timer channels, which can be used for event counting, pulse generation, frequency measurement, period measurement, and timing-related operations. The device supports correlated digital I/O and digital triggering, helping users build synchronized data acquisition and control systems. These features are useful for automated test systems that require timing control, repeatable measurements, and coordinated analog or digital operations.

The PCI-6225 works with NI-DAQmx driver software, which helps simplify hardware configuration, channel setup, sampling rate control, triggering, and measurement programming. It can also be used with SCC or SCXI signal conditioning modules to add sensor measurement or high-voltage measurement capability. This allows engineers to expand the PCI-6225 for different measurement environments and connect a wider range of sensors, transducers, and electrical signals.

The PCI-6225 PCI Multifunction I/O Device is suitable for applications such as high-channel-count voltage measurement, laboratory automation, industrial monitoring, production line testing, research experiments, design validation, and manufacturing test. Because it combines 80 analog input channels, analog output, digital I/O, counter/timer functions, and PCI platform compatibility in one device, it is especially useful for systems that need many measurement channels without moving to a larger modular PXI system.

Overall, the NI PCI-6225 PCI Multifunction I/O Device is a practical high-channel-count DAQ solution for users who need analog measurement, signal generation, digital control, timing functions, and NI-DAQmx software support. With 80 AI channels, 16-bit resolution, 250 kS/s sampling, 2 AO channels, 24 DIO channels, correlated digital I/O, and SCC/SCXI signal conditioning compatibility, the PCI-6225 is well suited for data acquisition, automated test, laboratory measurement, and industrial monitoring applications.