Chapter 4 Measurements
Figure 4-2 is an example of a typical system return loss trace:
Figure 4-2. Typical System Return Loss Trace
NOTE: The system sweep trace should appear at an approximate return loss of 15 dB (3 dB) on the display. In general, a 15 dB return loss is measured in the passband of the antenna system.
If the TMA is in the transmission feed line system, switch off the TMA bypass switch, if equipped. If the TMA does not have a bypass switch, disconnect the cables leading to and from the TMA and connect the adapter between the antenna jumper and the TMA jumper.
