PCI-4070 -NI Digital Multimeter Device

Description

The PCI-4070 (Part number: 778275-01) is a high-speed 6.5 Digit Digital Multimeter Device by National Instruments. This FlexDMM is compatible with PC-based systems. The PCI-4070 DMM is specifically designed to perform high-resolution measurements, but can also be used as a digitizer. As a DMM, this device measures AC/DC voltage, currents, and resistances. A diode testing option is also available in the PCI-4070. This device is ideal for automated tests in an R&D environment and on the production floor. The PCI 4070 has a basic DC voltage accuracy of 25 ppm. The device operates using the NI-DMM driver software (version 3.0.2 or later). The software is compatible with application development environments (ADEs) such as LabVIEW, LabWindows/CVI, Microsoft Visual C++, and Microsoft Visual Basic. The PCI-4070 Digital Multimeter has 12 built-in measurement functions and built-in self-calibration. While this device is in the isolated digitizer mode, it can measure both AC and DC-coupled waveforms in all voltage and current modes. The isolation feature allows users to measure differential waveforms with high levels of common-mode voltage. If the user utilizes LabVIEW with the isolated digitizer feature, then they have the capability to assess transients, fly-back signals, and more. While utilizing NI LabVIEW and NI-DMM driver software, the user can increase the resolution of the Digital Multimeter Device to 7-digit performance at 5 S per second. This rate is four times the resolution of a standard 6.5 digit Digital Multimeter. In DC mode, this model has resolution options of 7, 6.5, 5.5, 4.5, and 3 digits. The device has a recommended operating temperature range of 0 °C to 40 °C. The maximum sampling rate of the DMM depends upon the selected resolution. It increases with low digit resolution. The PCI-4070 has a maximum sampling rate in the range of 5 S per second to 1.8 MS/sec. The maximum trigger rate in the DC mode is 06 kHz. The sampling rate in the AC mode is from 0.25 S per second to 1.0 kS per second. In AC mode, the maximum trigger rate of the PCI-4070 is 1 kHz. The device has a weight of 20 oz., with the dimensions: 4.95 x 13.6 in.

Optical coupler input, relay output, digital IO module PXI bus 48 digital input and output module provides 24 optical coupling isolated input channels, 24 solid-state relay isolated output channels, input channel level voltage is 80VDC high, output channel switching level is 80VDC high, switching current is 160mA high, the channels are isolated from each other. Connector Type SCSI-100 female connector. peculiarity ◆ Isolation between channels ◆24 optical coupler input ◆24 solid state relay output ◆ Maximum 80V input/output voltage range ◆ Programmable input filter to eliminate buffeting ◆ Switching current 160mA ◆ Relay on-resistance: 1ω ◆ Input change detection ◆ Programmable power-on status setting Application program ◆ Automotive, aviation, industrial monitoring applications ◆ Aviation and laboratory research ◆ Biochemical automatic test and measurement

Analog input module is a device used to collect and process analog signals, which is usually composed of analog input circuit, analog-to-digital converter (ADC), filter and interface circuit. The analog input circuit is responsible for converting the external analog signal into a voltage or current signal, and then converting the analog signal into a digital signal through an analog-to-digital converter, and finally filtering and enhancing the signal through a filter, and finally output to a computer or other control equipment for processing and analysis. Working principle 1. Analog input circuit: The analog input circuit is a key part of the analog input module, which is mainly responsible for converting the external analog signal into a voltage or current signal. Common analog input circuits include resistance divider circuit, current voltage circuit and so on. The resistance divider circuit realizes the signal conversion through the series parallel combination of resistors, and the current voltage circuit realizes the signal conversion through the product of current and resistance. 2. Analog-to-digital converter (ADC) : The analog-to-digital converter is the core component in the analog input module, which is responsible for converting analog signals to digital signals. The analog-to-digital converter discretizes the input voltage or current into a series of digital values according to its magnitude, and converts the continuous analog signal into a discrete digital signal through a process of sampling and quantization. Common analog-to-digital converters include successive approximation analog-to-digital converters and integral analog-to-digital converters. 3. Filter: The filter is an important part of the analog input module, which is mainly used to filter and enhance the signal. The filter can improve the quality and stability of the signal by removing high-frequency noise and interference signals, thus improving the accuracy and reliability of subsequent processing. 4. Interface circuit: The interface circuit is the connection bridge between the analog input module and the computer or other control equipment, which is responsible for converting the digital signal into a form that the computer or other control equipment can recognize and process. Interface circuit usually adopts serial communication interface or parallel communication interface, and realizes data exchange and communication with computer or other control equipment through data line and control line.

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