Signal conditioning card

Abstract

The invention discloses a signal conditioning card, comprising a signal attenuation module, a signal isolation amplifier module and an isolation voltage-stabilized source module, wherein the signal isolation amplifier module is connected with the signal attenuation module; the isolation voltage-stabilized source module is used for providing a working power supply voltage for the signal isolation amplifier module; the signal attenuation module comprises a first relay unit, a second relay unit and an attenuation unit; the attenuation unit is respectively connected with the first relay unit and the second relay unit; the signal isolation amplifier module comprises an isolation unit and a signal amplifier unit; the isolation unit is connected with the second relay unit; and the signal amplifier unit is connected with the isolation unit. In addition, the signal conditioning card also comprises a driver module and a decoder; the driver module is connected with the first relay unit and the second relay unit; and the decoder is connected with the driver module. The signal conditioning card has the advantages of isolating input signals from output signals, protecting measuring instruments,ensuring follow-up precision values on measuring PXI equipment, improving use flexibility of the measuring instruments, and being simple in circuit and strong in practical applicability.

Description

technical field [0001] The invention relates to portable PXI equipment, in particular to a device for conditioning internal signals of the portable PXI equipment. Background technique [0002] At present, for PXI equipment, due to the limitation of the performance of the device itself, its design bandwidth and precision are relatively low, so it cannot meet the application requirements of customers. [0003] In addition, under normal circumstances, industrial signals cannot directly enter the PXI module in the PXI system for measurement, and must be conditioned before measurement can be performed. Contents of the invention [0004] Based on the above, the main purpose of the present invention is to provide a signal conditioning card that has a simple circuit, can protect the measuring instrument and can improve the accuracy of subsequent measurements, and can be directly inserted into a PXI device and is easy to operate. [0005] In order to achieve the above object, the ...

AI Technical Summary

Problems solved by technology

[0002] At present, for PXI equipment, due to the limitation of the performance of the device itself, its design bandwidth and precision are relatively low, so it cannot meet the application requirements of customers

[0003] In addition, in general, industrial signals cannot directly enter the PXI module in the PXI system for measurement, and must be conditioned before they can be measured

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