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R&S FSQ Signal Analyzer - Rohde & Schwarz

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R&S <strong>FSQ</strong> Instrument Functions<br />

Tracking Generator – Option R&S FSU-B9<br />

RECALL The RECALL softkey restores the R&S <strong>FSQ</strong> settings that were used during source<br />

calibration.<br />

This can be useful if device settings were changed after calibration (e.g. center frequency,<br />

frequency deviation, reference level, etc.).<br />

SAVE AS TRD<br />

FACTOR<br />

The softkey is only available if:<br />

• the NETWORK mode has been selected<br />

• the memory contains a calibration data set.<br />

Remote command: CORR:REC<br />

SAVE AS TRD FACTOR uses the normalized measurement data to generate a<br />

transducer factor with up to 625 points. The trace data are converted to a transducer<br />

with unit dB after the transducer name has been entered. The number of points is<br />

defined by SWEEP COUNT. The frequency points are allocated in equidistant steps<br />

between start and stop frequency. The generated transducer factor can be further<br />

adapted in the SETUP menu – TRANSDUCER. The SAVE AS TRD FACTOR softkey<br />

is only available if normalization is switched on.<br />

Remote command: CORR:TRAN:GEN '<br />

4.7.3 Reflection Measurement<br />

Scalar reflection measurements can be carried out by means of a reflection-coefficient<br />

measurement bridge.<br />

Fig. 4.25 Test Setup for Reflection Measurement<br />

4.7.3.1 Calibration of Reflection Measurement<br />

The calibration mechanism for reflection measurement is basically the same as the<br />

one used for transmission measurement.<br />

CAL REFL<br />

SHORT<br />

The CAL REFL SHORT softkey starts the short-circuit calibration.<br />

If both calibrations (open circuit, short circuit) are carried out, the calibration curve is<br />

calculated by averaging the two measurements and stored in the memory. The order<br />

of the two calibration measurements is free.<br />

After the calibration the following message is displayed:<br />

4.228 Operating Manual 1313.9681.12 - 01

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