PXIE-5442 - NI Waveform Generator

Description

The PXIe-5442 (Part Numbers: 780109-01, 780109-02, 780109-03 and 196749A-03) is a Waveform Generator with one output channel, <43 MHz bandwidth measured at -3 dB, an output impedance of 50 Ω; 75 Ω (nominal), 16-Bit analog output resolution, and a software-selectable analog filter. The front connectors of the NI PXIe-5442 are two SMB jacks (bidirectional). The National Instrument PXIe-5442 PXI Waveform Generator supports waveform generation that requires onboard signal processing (OSP). OSP is implemented by the FPGA and helps reduce waveform download times and prolong waveform playback time. This instrument is used in testing applications for radar and electronic defense systems. The NI PXIe-5442 comes with Synchronization and Memory Core (SMC) technology, which allows the storage of waveforms and instructions on the onboard memory, in a flexible and user-defined manner. The PXIe-5442 features a soft front panel that supports interactive control. This PXI Waveform Generator features driver software, application software, and interactive control and configuration software. The driver software allows configuration, calibration, and control of the NI PXIe-5442. This model is configured to provide programming interfaces for application development environments, including LabVIEW, LabWindows™, and Microsoft Visual C++ .NET. There is also a Modulation Toolkit for LabVIEW, which offers functions for signal creation, visualization, and analysis of customized and regular analog and digital modulation. The NI PXIe-5442 comes equipped with many helpful features, such as Pulse-Shaping Filters, Carrier Frequencies up to 43 MHz with 355 nHz Resolution, Continuous Data Streaming up to 200 MB/s, a FIR Interpolation Filter, and 400 MS/s Effective Sampling Rate with DAC Interpolation. DAC Interpolation helps increase the output signal quality of smooth waveforms. Each DAC creates reconstruction pictures in the frequency domain because of the conversion procedure. The PXIe-5442 supports frequency ranges up to 43 MHz with an output impedance of 50 Ω nominal or 75 Ω nominal. The NI device weighs 14.3 oz, and measures 8.5 x 0.8 x 5.1 in. in physical dimensions. It has a recommended operating temperature range of 0 ºC to 55 ºC, a storage temperature range of -25 ºC to 85 ºC, and an operating and storage vibration of 0.31 grms and 2.46 grms respectively–all at a frequency range of 5 to 500 Hz.

One: PLC analog input module (analog input module), also known as A/D module, converts the continuous analog signal generated by the sensor detection in the field into the digital quantity that the PLC CPU can receive, generally 12-bit binary number, the more digital quantity modules, the higher the resolution. Two: PLC analog output module. The analog output module, also known as D/A module, converts the digital quantity sent by the PLC CPU to the analog output module into the analog quantity (voltage or current) that can be received by the external device. The digital signal received by the analog output module is generally 12-bit binary number, and the more digital quantity modules, the higher the resolution. The digital module is to detect the state of the external switching input. Three: Digital input and output signal is the switching signal, 0 or 1, analog signal, there are two, voltage or current signal, generally the signal transmitted by the transmitter, such as the pressure transformer to detect the pressure of the water pipe, it will output an analog signal 4-20ma or 0-10V signal to the PLC, PLC for data processing, This is the difference between a digital input module and an analog input module.

In the input sampling phase, the PLC successively reads all input status and data by scanning and stores them in the corresponding cell in the I/O image area. After the end of the input sampling, the user program execution and output refresh phase. In both phases, even if the input state and data change, the state and data of the corresponding unit in the I/O map area will not change. Therefore, if the input is a pulse signal, the width of the pulse signal must be greater than one scan cycle to ensure that the input can be read in any case. The acquisition of the switching quantity is realized through the PLC input module, which is generally a DC 24V input. The PLC provides a common point, positive or negative, and then the common point is connected to the limit switch and other devices. When the limit is closed, the path is formed and the signal is introduced into the PLC input point. Specifically why the input point to power inside the state is on, is the function of PLC itself, you do not need to tube. Through the analog module, A/D (analog/digital) module, the external weight signal, temperature signal, pressure signal can be introduced, A/D module can accept the signal is 0-10V, 0-5V, -5-5V voltage signal and 0-20MA, 4-20MA current signal. If the signal obtained by the terminal acquisition module is not these standard signals, but also through the transmitter conversion, after the standard signal enters the A/D module, it will be converted by A/D into a number, the specific range is different PLC is not the same, these converted digital quantities, can be used by the program, conversion, processing, and finally get the required data displayed.

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