332 Keysight EXG and MXG X-Series Signal Generators User’s GuideUsing Real–Time Phase Noise Impairments for N5172B/82B with Option 432 and 653/655/656/657Using Real-Time Phase Noise Impairment SoftkeysUsing Real-Time Phase Noise Impairment SoftkeysThis feature lets you degrade the phase noise performance of the signal generator by controllingtwo frequency points and an amplitude value. The signal generator adds this phase noise to thephase noise normally produced by the signal generator. This feature appears in each of the arbformats and as a stand–alone menu. While the following figure shows how to access the controlsusing both the stand–alone menu and the Dual ARB player, the location and softkeys within eacharb format is the same as for the Dual ARB player.Figure 12-1 Stand–Alone and Dual ARB Player Real–Time Phase Noise SoftkeysThe end frequency for the flatmid–frequency characteristics.The start frequency for the flatmid–frequency characteristics.For details on each key, use key helpas described on page 56.The display updates evenwhen the feature is off.For an explanation on thesesettings see“Phase Noise Shape andAdditive Phase NoiseImpairments” on page 333.Flat Mid–This softkey isavailable in all arbformats.The amplitude for the flat mid–frequency characteristics.(Lmid stands for the levelamplitude of the mid–frequencycharacteristic.)NOTE: The phase noise impairment is added to the base phase noise ofthe signal generator.Stand–alone menuUse to add phase noise to theCW output without having toplay a waveform.
