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236 N5511A Phase Noise Test System User’s Guide
FM Discriminator Measurement Examples
FM Discriminator Single Channel Measurement using Double-Sided Spur Calibration
Making the measurement
1.
Press the
Continue
button when you are ready to make the measurement.
Calibrating the measurement
The calibration procedure determines the discriminator constant to use in the
transfer response by measuring the system response to a known FM signal.
2.
Establish quadrature by adjusting the phase shifter until the meter
indicates 0 volts, then press
Continue
.
3.
Apply modulation to the carrier signal, then press
Continue
.
4.
Remove the modulation from the carrier and connect your DUT.
Note that the system must be operating in quadrature during calibration.
Содержание N5511A
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