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4.5.6. Calibration
Although RigExpert AA-600, AA-1000 and AA-1400 are designed for high
performance without any calibration, an open-short-load calibration may be applied for
better precision.
The standards used for calibration should be of high quality. This requirement is
especially important for high frequencies (100 MHz and upper). Three different
calibration standards should be used: an “open”, a “short” and a “load” (usually, a 50-
Ohm resistor). A place where these standards are connected during calibration is called
a reference plane. If the calibration is done at the far end of a transmission line,
parameters of this line will be subtracted from measurement results and the analyzer
will display “true” parameters of a load.
To perform calibration,
1. Enter the SWR graph (the
key), the R,X graph (the key) or the Smith/polar
chart (the
+
key combination) mode.
2. Select the desired center frequency and the sweep range.
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