User`s guide

Agilent Technologies E5500 Phase Noise Measurement System

7-97

Absolute Measurement Examples

Microwave Source

This measurement example will help you measure the absolute phase noise

of a microwave source (2.5 to 18 GHz) with frequency drift of

≤

10E – 9 X

Carrier Frequency over a period of thirty minutes.

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 has been correctly set for the desired

configuration, as show in Table7-19onpage7-103. 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 7-17 Required Equipment for the Microwave

Source Measurement Example

Equipment Quantity Comments

Agilent/HP 8644B 1 Must have DCFM Input Port.

Refer to

Chapter 6, “Selecting a

Reference”

for more information

about reference source

requirements

Agilent/HP 70422A 1 Must be entered in the Asset

Manager and Server Hardware

Connections dialog box.

Coax Cables And adequate adapters to connect

the UUT and reference source to

the test set.