Anritsu FAQs

The rule of thumb is that if you are in DTF (Return Loss Mode), then typically all connectors should be below -30, all cables should be below -40 as viewed on the vertical scale on the left hand side of the display. Again, depending on the cable run and antenna used (application); the antenna usually reads in the order of -15 to -20. However, application will dictate this whether you are operating in the 800 or 2000 MHz area or are using low band radio at 150 or 480 MHz. From this you can establish reference points which allow you to determine a connector pair at the junction of a jumper to the main feed line. Typically jumpers are about 2 meters long, so you should be able to establish your reference points from the length of the cable used.