Quick Start Guide for AV3680A Handled Cable & Antenna Tester
Figure 3.9 Return Loss and SWVR Test Diagram at 2,100MHz
CAUTION
3.2.2 Cable Loss Measurement
Cable loss refers to the energy consumed by cable in the process of signal transmission, which is generally
represented by average value. During the test, the cable loss is usually measured by the following
connection, as shown in Figure 3.10.
Figure 3.10Cable Loss Measurement Connections
Now, this part takes the cable with length of 25m, frequency of 2.1GHz and cable loss of 0.36dB/m to
introduce the cable loss test steps.
1. Press
【
MEAS
】
to enter measurement menu;
2. Select [Cable Loss] menu to set the current measurement format of instrument as “Cable Loss”, as
shown in Figure 3.11.
Figure 3.11 Cable Loss Measurement Format Select
Return loss or VSWR is the matching degree of DUT at each frequency point
in the whole frequency band. Sweep span can be specifically set according to
operating frequency of the measured cable or DUT during measurement.
