Keysight Technologies N9330B User Manual

Contents

Keysight Technologies N9330B User Manual Manual pdf 50 page image

Using FunctionsProcessing Traces44Trace overlapThe tester allows a previously saved trace to be recalledonto the currently displayed screen. The two displayedtraces are identified by different colors.Trace overlap is a real-time tool for quick comparisonsbetween the current trace and a previously saved trace.The tester cannot save the overlaid traces into eitherlocal memory or external USB memory stick.Example: To compare the current measurement traceto a saved trace (data) in the local memory of the tester.They were both measured in the return loss mode, GSMfull band (880 MHz to 960 MHz), resolution 521 points.Perform the following steps to do a trace overlapoperation:1 Press [MEAS/VIEW] > {Trace Overlap} > {Select Trace}to display a list of trace data stored in the localmemory of the tester.2 Use the front-panel knob to select a trace and press[ENTER].The tester will display the saved trace, whilecontinuously making measurement of the DUT (currentmeasured trace). The two traces are displayed on thescreen simultaneously:• Trace one is displayed as a static trace and is greenin color. It is the saved trace results recalled fromthe local memory of the tester.• Trace two is yellow in color and is repeatedlyscanned. It is the currently measured trace result.NO TE The previously saved trace must have consistent measurement parameters with the current trace. For example, thesame mode, resolution, and frequency/distance range.