How to Establish a Metrology-Grade Reference for Calibration Labs

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Pro XG7 Analog Signal Generator
+ Pro XG7 Analog Signal Generator
Pro XG7 Analog Signal Generator
+ Pro XG7 Analog Signal Generator

Establish a Clean RF Reference

Establishing an RF reference starts with generating a controlled signal whose residual impairments remain sufficiently below the behavior you need to characterize. The setup requires an RF signal generator and the appropriate measurement instrument for the parameter under test. Evaluate the source contribution from phase noise, amplitude modulation (AM) noise, broadband noise, harmonics, non-harmonic spurious signals, and RF level before using that signal as the measurement reference.

Set the required carrier frequency and output level, connect the source through the appropriate calibrated signal path, and characterize the reference under the same conditions used for the device or instrument under test. Compare the expected measurement range with the source's residual noise and distortion so the reference does not unnecessarily mask the behavior under evaluation. Where level is part of the measurement, control the delivered RF power and account for the measurement path in the calibration procedure.

Metrology-Grade RF Reference Solution

Establish the RF reference by using a controlled source for calibration and characterization measurements. Clean, stable output provides a reference for evaluating instruments or devices under test while minimizing unwanted contributions from the signal source. This helps engineers distinguish source-related effects from the behavior of the measurement system or device under test (DUT). The source can also be integrated into automated calibration workflows using SCPI, allowing RF reference conditions to be configured and repeated consistently. This supports controlled measurements across development and metrology workflows while helping reduce variability and uncertainty introduced by the RF source.
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