Signal Generator Calibration Uncertainty

The measurement uncertainty due to mismatch is often a major component of the total uncertainty for rf uw and mmw measurements.

Signal generator calibration uncertainty.

Meet your test requirements with the widest selection of signal generators with the best performance in every class whether you need a traceable metrology grade solution or cost effective basic signal generation. To improve the calibration result and mis match uncertainty evaluation wehavetoperformamis match correction i e. The complex reflection coefficient of. Page 1 of 1.

First there is the straight audio signal generator. Calibration of signal generators like all measurements is subject to many different factors that affect the quality of the results. Meters signal analyzers noise figure meters network analyzers high frequency oscilloscopes signal generators attenuators couplers cables and adapters. But there are two other types of signal generators that have to be accounted for.

Go to first unread skip to page. Go to first unread skip to page. Adv physics signal generator uncertainty watch. σnoiseon fractional uncertainty in the noise measurement with the noise source on σrf fractional uncertainty due to the frequency response of the down convertor includes offset signal generator and mixer at rf σsr uncertainty due to the short term repeatability between measurements ω0 angular frequency of the carrier signal.

Second there is the function generator. A reading and calibration uncertainty will need to be talked about. You will learn how to obtain the best signal quality for vector modulated signals using rf vector signal generators. Page 1 of 1.

Figure 1 illustrates a block diagram of an rf vector signal generator vsg which includes a baseband generator an i q modulator and an rf output section. Push your device within and beyond its limits with unmatched purity and precision with keysight signal generators. The signal generator reflection coefficient cannot be neglected in accurate power sensor calibration with small uncertainty. In the main this article is about rf signal generators.

Before examining an advanced calibration procedure that you can use to transfer a power meter s accuracy to both a signal generator and signal analyzer across a wide dynamic range using small attenuation values explore an analysis of power meter measurement uncertainty as a foundation for future assertions. You need to specify the start and stop frequencies configure the power meter and then execute the. The audio signal generator will produce a high quality sinewave output and possibly also a squarewave output. Start new discussion reply.

You can use a usb power sensor to perform the calibration as shown in figure 4. Some examples of sources of uncertainty are mismatches linearity errors interference and temperature effects.