EASY-TO-USE, REDUCES ERROR, INCREASES SYSTEM UPTIME
Cost Savings and Quality Improvement
Wireless market competition requires operators to reduce
per site maintenance expense. Site Master’s Frequency
Domain Reflectometry (FDR) techniques break away from
the traditional fix-after-failure maintenance process by finding
small, hard to identify problems before major failures occur.
Site Master’s approach to preventive maintenance pays for
itself quickly. A poorly installed cable, connector, or connec-
tor weather seal will degrade system performance and, if
undetected, will eventually damage expensive coaxial cable.
Only Site Master has the sensitivity to identify cable, connec-
tor and antenna related problems before system perfor-
mance is compromised.
FDR Technique
Frequency Domain Reflectometry, (FDR), and Time Domain
Reflectometry, (TDR), have similar acronyms, and both
techniques are used to test transmission lines. But, that’s
where the similarities end. TDRs are not sensitive to RF
problems: the TDR stimulus is a DC pulse, not RF.Thus, TDRs
are unable to detect system faults that often lead to system
failures. Additionally, FDR techniques save costly, time-
consuming trouble shooting efforts by testing cable feedline
and antenna systems at their proper operating frequency.
Deficient connectors, lightning arrestors, cables, jumpers, or
antennas are replaced before call quality is compromised.
Quick, Simple Measurements
Site Master performs various RF measurements aimed at
simplifying cable feedline and antenna system analysis:
Return Loss, SWR, Cable Loss and Distance-to-Fault (DTF).
A single softkey selection on the main menu activates the
desired measurement mode.
Return Loss, SWR
Return Loss and/or
SWR "system"
measurements ensure
conformance to system
performance engineer-
ing specifications.
Measurement easily
toggles between either
one of the two modes
and can be performed
without climbing the
tower.
Cable Loss
Cable Loss measure-
ments measure the
level of insertion loss
within the cable
feedline system.
Insertion loss can be
verified prior to
deployment, when
you have access to
both ends of the
cable, or on installed
cables without
access to the opposite end.
Distance-to-Fault
Although a Return Loss test can tell users the magnitude of
signal reflections, it can not tell the precise location of a fault
within the feedline system. Distance-To-Fault measurements
provide the clearest indication of trouble areas (screen display
below) as it tells us both the magnitude of signal reflection
and the location of the signal anomaly.
Distance-To-Fault
measurement
capability is built into
all Site Master
Models as a standard
feature. Return Loss
(SWR) measurement
data is processed
using Fast Fourier
Transform and the
resulting data
indicates Return
Loss (SWR) versus
distance.
Distance-To-Fault pinpoints the location and
reflection amplitude of transmission line
components.
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