Application Note: Cell Master Average Cable Loss Measurement

Traditionally, measuring the insertion loss of an installed coaxial cable is a one-port reflection measurement since it is virtually impossible to connect both ends of the cable to test equipment. The measurement is made by placing a short on one end of the cable and measuring the return loss at the other end. The desired value, cable loss, is return loss divided by two, since the signal travels through the cable in both directions before it is measured.

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