E7000L SitePROFILER
Handheld Cable/Antenna Analyzer
54
Chapter 8 — One Port Cable Loss Measurement Testing
Introduction
This chapter provides an overview of performing
Cable Loss
measurements with the E7000L SitePROFILER Cable
Analyzer. The
One Port Cable Loss
measurement checks the signal attenuation level (insertion loss) of the
RF cable. Excessive cable loss will negatively affect cell site coverage.
This measurement can be especially useful in measuring the loss of feed line connected to the antenna. By
placing a short at the end of the cable or leaving it open, the signal is reflected back and the energy lost in
the cable can be computed. Cables with larger diameter generally have less insertion loss and better
power handling capabilities than cables with smaller diameter.
8-1
Setting Up a One Port Cable Loss Measurement
The following is a step-by-step guide for preparing to conduct a cable loss 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
Cable Loss
.
3.
Tap the
Freq/Dist
main menu softkey. Under the
Frequency
submenu, set your desired Start and
Stop frequencies. 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.
