6
The majority of the problems you find at a typical cell site are caused by problematic cables, pinched cables, corroded
connectors, antennas, lightning strikes, rain getting into cables, and bullet holes. Degraded cable systems and badly positioned
antennas affect overall system coverage and eventually result in dropped calls. Site Master’s FDR-based return loss and DTF
measurements can pinpoint an antenna problem from ground level in a few seconds, enabling Site Master to identify small
problems before they become big problems.
RETURN LOSS / VSWR
Use the Site Master to make return loss and VSWR and verify that the
cable and antenna system conforms to performance specifications.
CABLE LOSS
Cable Loss metrics measure the level of insertion loss within the cable
feedline system. This measurement can be verified prior to deployment,
when you have access to both ends. Site Master automatically calculates
the average cable loss.
DISTANCE-TO-FAULT
While the return loss metric is the best measurement to verify the health of
a system, distance-to-fault (DTF) is used to troubleshoot systems and locate
the problem.
The Site Master’s DTF measurement uses the fast Fourier transform to
convert frequency data to the time domain and displays signal anomalies
with respect to distance. Using the standard trace math feature, you can
monitor small relative changes over time.
2-PORT TRANSMISSION MEASUREMENTS (OPTION 21)
Cellular/PCS and 3G base stations today use diplexers, duplexers, and
tower-mounted amplifiers to extend the coverage area. Site Master’s 2-port
transmission measurement enables you to make gain, isolation, and insertion
loss measurements as well as verify sector-to-sector isolation.
BIAS TEE (OPTION 10)
The built-in bias tee can be turned on as needed to place +12 to +32V on
the center conductor of the RF in port, eliminating the need for you to carry
external supplies in the field.
Distance-to-Fault
Return Loss/VSWR
2-Port Transmission Measurements
MASTER CABLE & ANTENNA ANALYSIS, ANYWHERE, ANYTIME
(82 strony)
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