Chapter 15
Using Cable and Antenna Analyzer
538
JD700B Series User’s Guide
Performing 1-port phase measurements
The 1-port Phase measurement is used to measure S
11
phase to tune antennas and to phase-match cables.
Making a measurement
Procedure
1
Make a proper cable connection as described in “Connecting a cable for reflection, DTF, 1-port
phase, and Smith Chart measurements” on page 528.
2
Press the
MEASURE SETUP
hot key.
3
Press the
Data Points
soft key to change the resolution of your measurement, and then select
the data point option:
126
,
251
,
501
,
1001
, and
2001
. Changing the data point does not affect
current calibration.
NOTE
The larger number you choose, the higher resolution you get and the longer the
instrument takes to sweep and display results. Selecting the data point larger than what
you need for a measurement will result in unnecessarily long sweep time. It is
recommended that you select high resolution data points only for an instance of
measuring wide frequency bands or requiring precise measurement data.
4
Optional
. To turn the bias tee on, complete the following steps:
Toggle the
Bias Tee
soft key and select
On
.
Enter a value between 12 and 32 with 0.1 V step, and then press the
V
soft key.
NOTE
The instrument’s built-in bias tee function (option 002) supplies 12-32 VDC bias to active
devices through the
RF In
port, eliminating the need of an external power supply.
NOTE
See “Performing reflection measurements” on page 531 for more information on how to
set other measurement setup parameters for the Cable Loss (1 Port) measurement.
Measurement example
Figure 329 Cable loss (1 port) measurement
