12Chapter 2 Measuring Multiple SignalsComparing Signals on the Same Screen Using Marker DeltaMeasuring Multiple SignalsComparing Signals on the Same Screen Using Marker DeltaUsing the analyzer, you can easily compare frequency and amplitude differences between signals, such as radio or television signal spectra. The analyzer delta marker function lets you compare two signals when both appear on the screen at one time.In this procedure, the analyzer 10 MHz signal is used to measure frequency and amplitude differences between two signals on the same screen. Delta marker is used to demonstrate this comparison.Figure 2-1An Example of Comparing Signals on the Same ScreenStep 1.Preset the analyzer:Press Preset, Factory Preset (if present).Step 2.(PSA) a. Enable the rear panel 10 MHz output.Press System, Reference, 10 MHz Out (On).b. Connect the 10 MHz OUT (SWITCHED) from the rear panel to the front panel RF input.(ESA)Connect the rear panel 10 MHz REF OUT to the front panel RF input.Step 3.Set the analyzer center frequency, span and reference level to view the 10 MHz signal and its harmonics up to 50 MHz:Press FREQUENCY Channel, Center Freq, 30, MHz.Press SPAN X Scale, Span, 50, MHz.Press AMPLITUDE Y Scale, Ref Level, 10, dBm.