3Si Security Systems Inc. GT83000A Benutzerhandbuch
GE865 Hardware User Guide
1vv0300799 Rev.15– 2012-04-23
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved
page 39 of 77
7.3.2.
Transmission line measurements
HP8753E VNA (Full-2-port calibration) has been used in this measurement session. A calibrated
coaxial cable has been soldered at the pad corresponding to GE865 RF output; a SMA connector
has been soldered to the board in order to characterize the losses of the transmission line
including the connector itself. During Return Loss / impedance measurements, the transmission
line has been terminated to 50
coaxial cable has been soldered at the pad corresponding to GE865 RF output; a SMA connector
has been soldered to the board in order to characterize the losses of the transmission line
including the connector itself. During Return Loss / impedance measurements, the transmission
line has been terminated to 50
Ω load.
Return Loss plot of line under test is shown below: