Bird Technologies SA-6000XT-Manual - Manual (Page 11)

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About This Manual
This manual covers the operating and maintenance instructions for the follow-
ing models:
Changes to this Manual
We have made every effort to ensure this manual is accurate. If you discover
any errors, or if you have suggestions for improving this manual, please send
your comments to our Solon, Ohio factory. This manual may be periodically
updated. When inquiring about updates to this manual refer to the part number
and revision on the title page.
Definitions
Measure Match Mode -
The Match Measurement mode shows the resonant
frequencies for an antenna or filter. It also confirms that there are no imped-
ance problems in the nonresonant components such as cables, connectors,
lightning protectors, and jumpers.
Fault Location Mode -
The Fault Location mode shows the location of any
problems in the antenna system. This is shown in either feet or meters from the
cable end connected to the Site Analyzer.
Cable Loss Mode - The Cable Loss mode shows the insertion loss of a coaxial
cable. By comparing this with the manufacturer’s specs, it confirms that there
are no problems with the cable.
VSWR -
VSWR units used to be the preferred way to measure an antenna sys-
tem. A good antenna has a VSWR of less than 1.5:1 at its operating frequency.
Return Loss -
Return Loss measures, in dB, how much of a wave is reflected back to
the source. It is now the preferred method for measuring antenna systems. A good
antenna will have a return loss of –14 dB or less at the operating frequency. The more neg-
ative the reading, the better the antenna.
Markers -
Markers are used to show the exact value at one point on the graph.
In Measure Match and Cable Loss modes, the marker displays the frequency
and loss (or VSWR). In Fault Location mode, the marker displays the distance
and loss.
Run / Hold -
When HOLD is displayed, the unit makes a new sweep every few
seconds, and displays the latest sweep. When RUN is displayed, the unit will
only make a single sweep. The display will not update if the Site Analyzer is dis-
connected or if the cable is jiggled. This is usually preferred.
SA-3600XT SA-6000XT