E7000L SitePROFILER
Handheld Cable/Antenna Analyzer
56
Chapter 9 — One Port Phase Measurement Testing
Introduction
This chapter provides an overview of performing
One-Port Phase
measurements with the E7000L SitePROFILER
Cable Analyzer. The
One-Port Phase
application measures S11 phase of a reflection measurement, which is
commonly used to tune antennas and phase match cables. It is also favored when one end of the cable
cannot be brought up to the test instrument – or in cases where “measure-and-snip” operations must be
performed to create cables of exactly the right phase length for a prescribed frequency.
The one-port phase measurement is most useful when making relative measurements (comparing the
phase of one device to the phase of another) by utilizing the Data Math function. See subsection 4-1.8 for
more details on Data Math in the
Trace
menu.)
9-1
Setting Up a One Port Phase Measurement
The following is a step-by-step guide for preparing to conduct a one-port phase measurement using the
E7000L SitePROFILER cable analyzer.
Procedure:
1.
To set the instrument in the cable analyzer mode, press the
Menu
button to view the measurement
mode desktop. Tap the
Cable & Antenna
softkey.
2.
Tap the
Measurement
main menu softkey to open the Measurement menu on the right side of the
display. Under the
Advanced
submenu, select
1-Port Phase
.
3.
Tap the
Freq/Dist
main menu softkey. Under the
Frequency
submenu, set your desired Start and
Stop frequencies to cover the normal operating range of the antenna or cable to be measured,
plus a suitable margin. There are two ways to accomplish this.
a.
Manually enter the desired start frequency by tapping
Start Freq
and using the arrow keys,
data keypad, or rotary knob. Press Enter to confirm. Repeat for
Stop Freq
.
b.
Open the
Signal Standard
submenu and tap
Select Signal STD.
Double-tap your preferred
signal standard on the list to select it and return to the submenu, then select the signal type
by tapping
Uplink, Downlink
, or
Downlink
.
4.
Still under Freq/Dist, open the
Distance
submenu. Enter the start and stop distance; be sure that you
toggle
Dist Units
to highlight the correct unit.
