NI introduces two new RF signal conditioning modules
National Instruments (NaTIonal Instruments, NI) recently announced the launch of two new RF signal conditioning modules that can enhance the measurement accuracy and flexibility of PXI-based RF and microwave test systems, thereby enabling the company to automate its test product line Further expand. In applications such as RF signal path loss modeling, field strength measurement, and receiver test applications, engineers can combine the new NI PXI-5695 8 GHz programmable RF attenuator with a vector signal generator (VSG) to improve RF signal quality at low power levels. Engineers can combine the NI PXI-5691 8 GHz programmable RF preamplifier with a VSG to increase maximum power, or a vector signal analyzer (VSA) to measure smaller signals.
"When testing receiver sensitivity, precise control of RF power levels is a key requirement." Said Jeff May, test engineer at Itron (Note: Itron is a leading supplier in the field of smart metering and a pioneer in smart grid technology), "NI The new programmable attenuator provides us with the necessary high accuracy, so that we can accurately control the excitation level in the test device of PXI products, which is of great benefit to help us maintain the efficiency and quality of the test process.
PXI-5695 is a 50MHz to 8GHz dual-channel programmable RF attenuator with a fixed attenuation channel and a programmable attenuation channel. This module provides an integrated RF power adjustment method, which can replace the switching attenuator network in RF product testing in many cases. Engineers can integrate PXI-5695 with an RF signal generator (such as NI's PXIe-5673 6.6 GHz vector signal generator) to control signal power more precisely. The maximum attenuation can reach 60 dB, and the typical voltage standing wave ratio (VSWR) is 1.3: 1. This level of control greatly increases the dynamic range of the vector signal generator and is also the key to accurate measurement of receiver sensitivity.
PXI-5691 is a 50MHz to 8GHz dual-channel programmable RF amplifier that can achieve both preamplifier and power amplifier functions. It has a maximum output power of more than 20dBm, a total gain of up to 60dB, and a gain resolution of 0.5dB. , The third-order intermodulation intercept point (IP3) of more than 31dBm and the noise figure of 5dB, the amplifier can fully achieve the flexibility and accuracy of measurement when it is connected to an RF signal generator or signal analyzer. When used with the NI PXIe-5663 6.6 GHz vector signal analyzer, the new amplifier enables engineers to achieve an equivalent input noise floor of -163 dBm. When used with the NI PXIe-5673 vector signal generator, it can generate signals with an instantaneous bandwidth up to 100MHz at output power levels up to 20dBm.
"These new RF signal conditioning modules enhance the performance of the PXI platform in RF applications," said Eric Starkloff, vice president of test product marketing at NI. "We continue to invest in the development of new PXI instruments, hoping to provide a range of commercially available solutions to help engineers build next-generation automated test systems to meet complex challenges."
As part of the NI PXI platform, the newly introduced attenuators and amplifiers are optimized for the NI LabVIEW graphical system design platform, NI LabWindows â„¢ / CVI ANSI C software development environment, and C, C ++, and .NET programming. In addition, each instrument driver contains LabVIEW sample code, which can help engineers use graphical programming to quickly develop RF and microwave test systems.
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