Anritsu Site Master S332B User Guide - Mr Test Equipment
Anritsu Site Master S332B User Guide - Mr Test Equipment
Anritsu Site Master S332B User Guide - Mr Test Equipment
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Calibration<br />
The <strong>Site</strong> <strong>Master</strong> is a field portable unit operating in the rigors of the test environment. An<br />
Open-Short-Load (OSL) calibration should be performed prior to making a measurement in<br />
the field. A built-in temperature sensor in the <strong>Site</strong> <strong>Master</strong> advises the user, via an icon located<br />
on the right side of the LCD screen, that the internal temperature has exceeded a<br />
safety window, and the user is advised to perform another OSL calibration in order to maintain<br />
the integrity of the measurement.<br />
NOTES:<br />
For best calibration results—compensation for all measurement uncertainties—ensure<br />
that the Open/ Short/Load is at the end of the test port or optional<br />
extension cable; that is, at the same point that you will connect the antenna or<br />
device to be tested.<br />
For best results, use a phase stable <strong>Test</strong> Port Extension Cable (see Optional<br />
Accessories). If you use a typical laboratory cable to extend the <strong>Site</strong> <strong>Master</strong> test<br />
port to the device under test, cable bending subsequent to the OSL calibration<br />
will cause uncompensated phase reflections inside the cable. Thus, cables<br />
which are NOT phase stable may cause measurement errors that are more pronounced<br />
as the test frequency increases.<br />
For optimum calibration, <strong>Anritsu</strong> recommends using precision calibration components.<br />
Annual Verification<br />
Chapter 1 General Information<br />
<strong>Anritsu</strong> recommends an annual calibration and performance verification of the <strong>Site</strong> <strong>Master</strong><br />
and the OSL calibration components by local <strong>Anritsu</strong> service centers. <strong>Anritsu</strong> service centers<br />
are listed in Table 1-2 on the following page.<br />
The <strong>Site</strong> <strong>Master</strong> itself is self-calibrating, meaning that there are no field-adjustable components.<br />
However, the OSL calibration components are crucial to the integrity of the calibration<br />
and therefore, must be verified periodically to ensure performance conformity. This is<br />
especially important is the OSL calibration components have been accidentally dropped or<br />
over-torqued.<br />
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