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True RMS Power Meter w/ Bus-Powered USB Connectivity

True RMS Power Meter w/ Bus-Powered USB Connectivity

The NI USB-5681 RF power meter features a wide dynamic range from -40 to +20 dBm and <0.18 dB linearity over the full 10 MHz to 18 GHz frequency range. With this true RMS power meter, you can make extremely accurate average power measurements of signals ranging from single-tone and multitone sources to wideband, complex digital waveforms. You can hardware-trigger the USB-5681 through an external trigger source or software-trigger it based on the signal source. Scope and slot modes use this software triggering to measure burst waveforms, such as WiMAX and LTE, and multislot waveforms, such as GSM and EDGE. These new features are exposed in the full-featured Soft Front Panel application as well as the flexible API for NI LabVIEW or NI LabWindows/CVI. The power meter is self-contained in a small form factor similar to the size of a typical power head with calibration constants, including linearity and temperature corrections stored directly on the device. The device draws only 150 mA from the USB connection, making it highly suitable for mobile applications or adding to automated test applications to free up valuable rack space without sacrificing performance.

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