Anritsu FAQs
How can I get Marker one to be fixed and have the Delta marker be variable on the same frequency?
After you set the MS2721B to the desired center frequency, make sure you don’t have any attenuation set on input port. Turn Marker one on. Select Peak Search. More Under Marker Style or Fixed Marker turn to fixed or on. Back Turn Delta ON for the marker one. You can change now the RF input level and will have the Delta value.