User`s guide

11-18 Agilent Technologies E5500 Phase Noise Measurement System
FM Discriminator Measurement Examples
Discriminator Measurement using FM Rate and Deviation Calibration
Discriminator Measurement using FM Rate
and Deviation Calibration
CAUTION To prevent damage to the Agilent/HP 70420A test set’s hardware
components, the input signal must not be applied to the signal input
connector until the input attenuator (Agilent/HP 70420A Option 001) has
been correctly set for the desired configuration, as show in Table 11-2 on
page 11-11. Apply the input signal when the Connection Diagram appears.
NOTE In order to use the FM rate and deviation calibration method you must have
a signal source that is calibrated for FM modulation rate and FM deviation
parameters. All Agilent Technologies signal generators meet this
requirement.
Required Equipment The following equipment is required for this example in addition the phase
noise test system and your unit-under-test (UUT).
NOTE To ensure accurate measurements, you should allow the UUT and
measurement equipment to warm up at least one hour before making the
noise measurement.
Table 11-4 Required Equipment for the FM
Discriminator Measurement Example
Equipment Quantity Comments
Signal Generator 1 +19 dBm output level at tested
carrier frequency.
Calibrated FM at a 20 kHz rate
with 10 kHz Peak Deviation.
Power Splitter 1 NARDA 30183
Delay Line Delay (or length) adequate to
decorrelate source noise.
Phase Shifter 1
±180° phase shifter at lowest
carrier frequency tested.