On 11/03/2010 03:22 AM, ashwanthh wrote:
Hi all,


For my project, I want to perform Distance to fault measurement in the
cable connecting the antenna. The principle is that a signal should be
sent to the cable and using the forward and reflected voltage VSWR
should be calculated and should be viewed in a spectrum analyzer. My
question is

1. What transducer is used to detect the transmitted/reflected signals
from the cable?

2. Should the transducer be connected in series or parallel?

Anyone, Please help



Or just use a grid dip meter.

1) Determine if the fault is a short or an open circuit with any tester.

2) Connect a small loop at the input of the cable.

3) Couple the dip meter and read the minimum frequency with a dip.

4) If a short circuit ===
Distance(meters) = 75 * cable velocity factor / frequency (MHz)

5) If an open circuit ===
Distance(meters)= 150 * cable velocity factor / frequency (MHz)
--
Alejandro Lieber LU1FCR
Rosario Argentina

Real-Time F2-Layer Critical Frequency Map foF2:
http://1fcr.com.ar