User`s guide

Table Of Contents
268 Agilent E5505A User’s Guide
10
FM Discriminator Measurement Examples
Discriminator Measurement using FM Rate and Deviation Calibration
Required equipment
Table 43 shows equipment is required for this example in addition the phase
noise test system and your DUT.
CAUTION
To prevent damage to the test set’s components, do not apply the input signal to
the signal input connector until the input attenuator (N5500A Option 001) has been
correctly set for the desired configuration, as show in Ta b le 4 4 on page 277. 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.
NOTE
To ensure accurate measurements allow the DUT and measurement equipment to warm
up at least 30 minutes before making the noise measurement.
Table 43 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.