Anritsu FAQs
How accurately do I need to know the propagation velocity and cable loss of my particular cable?
That depends! How well do you want to know the distance and loss of your system elements? The propagation velocity affects the distance that reflections are reported on the Site Master. Cable manufacturers often spec their prop v +/- 10%. So, the antenna at the end of your cable will have a +/- 10% error in distance. You can minimize this problem by sweeping known lengths of cable in DTF mode. You can 'dial in' the propagation velocity until the reflection at the end reads properly on the Site Master. The cable loss given by the manufacturers, however, is usually quite accurate. Using their published specification is sufficient. The Site Master cable tables offer both propagation velocity and loss values for many standard cables used in cell installations today.
