Agilent Technologies 8712ET User Manual

9-12 Option 100 Fault Location and SRL
Characteristics
Fault Location Distance Range and Resolution
Fault Location Distance Range and
Resolution
Resolution improves as the range is shortened and as the number of
measurement points are increased. (See the following tables and graphs.)
Distance is displayed in feet or meters. Typical range is limited by
transmission line losses.
Range
Maximum range is a function of the velocity factor (V
f
), frequency span
(F
s
), the velocity of light in a vacuum (c = 2.99796 X 10
8
m/sec), and the
number of measurement points (NP), and is determined (in meters) using
the following formula:
Resolution
Maximum resolution is a function of the velocity factor (V
f
), frequency
span (F
s
), sampling factor (N
s
: 128 for 101 points, 256 for 201 points, and
512 for 401 points), the velocity of light in a vacuum
(c = 2.99796 X 10
8
m/sec), and the number of measurement points (NP),
and is determined (in meters) using the following formula:
Range
V
f
c()NP 1–()
2 F
s
()
------------------------------------- StopDis cetan==
Resolution
V
f
c()NP 1–()
2 F
s
()N
s
()
-------------------------------------
Range
N
s
----------------
StopDis cetan
N
s
-----------------------------------===

Agilent Technologies 8712ET Specifications

General

Brand	Agilent Technologies
Model	8712ET
Category	Measuring Instruments
Language	English