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SITE MASTER S800 SERIES FOR MICROWAVE APPLICATIONS
The Site Master S800 series, is the most accurate and
convenient tool available for field installation, verification,
troubleshooting and repair of microwave communication
systems. Difficult test specifications are easy to verify. The
S800 series improves quality and reduces maintenance
expenses by providing vector corrected calibration and a
convenient user interface. These new microwave Site Master
models test both waveguide and coaxial cables more
conveniently than laboratory-sized scalar analyzers or
microwave test sets.
Vector Error Correction
Vector error correction within the S800 series improves the
quality and convenience of measurements compared to
traditional scalar techniques. Accuracy and repeatability
account for errors such as test port match and source match
errors. Vector correction allows the test port to achieve the
highest commercial directivity to 50 dB (frequency range
dependent) using relatively small calibration components.
Waveguide Dispersion
Vector error correction also improves the quality of Distance-
To-Fault data. Not only is the reflection magnitude more
accurate, but the waveguide dispersion correction for fault
location (different frequencies propagate at different speeds)
is more accurate and
repeatable. The post-
vector corrected data
accounts for the non-
dispersive length of
coaxial cable preced-
ing the input of the
waveguide under test.
Unlike scalar-based
systems, the Site
Master S800 Series
do not suffer reflec-
tion magnitude errors
(a failure looks better
than actual) and
length inaccuracies in
proportion to the
relative lengths of the
coaxial input cable and
waveguide under test.
Vector Correction Avoids Bulky Waveguide Coupler
Waveguide Calibration
The test port interface to the waveguide under test is a small
coaxial-to-waveguide adapter rather than a bulky precision
coupler.
The calibration components include two offset shorts,1/8 and
3/8 wavelength, and a precision load. The two offset shorts
eliminate reference error suffered by scalar systems when
only a single waveguide short is used to determine the 0.0 dB
reflection reference level. Site Master’s innovative flange
design mates to square, rectangular or circular flanges. For a
given waveguide size, only one calibration set is required.
Site Master’s waveguide calibration components are built
with precision alignment pins that mate the companion
coaxial to waveguide adapters. As a result, proper alignment
of waveguide is fast and convenient.
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