Making Cable Fault Measurements; Purpose; Calibrating The System - Agilent Technologies ESA-E Series User Manual

Making Cable Fault Measurements

Purpose

A cable fault location measurement displays the reflected signal of a transmission
line as a function of the distance down the line. This complements the return loss
measurement described in the following section: if a cable under test fails a return
loss measurement, a cable fault location measurement can be used to identify the
location of the fault. The measurement is particularly useful when a transceiver
and antenna are connected by a long length of cable.

Calibrating the System

For the following procedure, use the appropriate 50 ohm or 75 ohm cables and
accessories listed in
A return loss measurement requires the use of a power divider.
Table 3-1 Cables and Accessories
Cable/Accessory
Coaxial cable
Power divider
Coaxial load
6 dB Attenuator (50 ohm only)
Adapter 75 ohm N(f) to
75 ohm BNC(f) (75 ohm only)
Adapter 75 ohm N(m) to
75 ohm BNC(f) (75 ohm only)
1. Enter cable fault location mode and access the measurement.
Chapter 3
Table 3-1.
a. Press the Mode front panel key.
b. Press the
Cable Fault Location
c. Connect the equipment as prompted by the dialog box and illustrated in
Figure 3-1.
Making Cable Fault Measurements
Quantity 50 Ohm Setup
Part Number
2 8121-0101
1 11636A
1 909A Option 012
2 0955-0826
1 n/a
1 n/a
menu key.
Making Measurements
75 Ohm Setup
Part Number
5062-6452
0955-0752
909E
n/a
1250-1536
1250-1535
17