User`s guide

Agilent Technologies E5500 Phase Noise Measurement System 11-3
FM Discriminator Measurement Examples
FM Discriminator Measurement using Double-Sided Spur Calibration
FM Discriminator Measurement using
Double-Sided Spur 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.
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 11-1 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.