Technical data

Table Of Contents

Radiated Emissions Measurements

Making Radiated Emission Measurements

CAUTION Before connecting a signal to the analyzer, make sure the analyzer can safely accept

the signal level provided. The signal level limits are marked next to the RF Input

connectors on the front panel.

See the AMPTD Y Scale menu for details on setting internal attenuation to prevent

overloading the analyzer.

Setting up and making an ambient measurement

This section demonstrates how to set up and perform radiated emission tests in the 30

to 300 MHz range.

NOTE Determine which regulatory requirements you will be testing to prior to starting the

following procedure.

Even if you only have access to a small shielded enclosure, you can still make valuable

measurement of your device. Emission signals found in the small chamber can save

you time later on in an open area test site by providing information about the

emissions of interest.

Step Action Notes

1 Test Set Up a. Arrange the antenna, DUT

and signal analyzer as

shown below:

Separate the antenna and the device under

test (DUT) as specified by the regulatory

agency requirements. If space is limited, the

antenna can be moved closer to the DUT

and you can edit the limits to reflect the

new position. For example, if the antenna is

moved from 10 meters to 3 meters, the

amplitude must be adjusted by 10.45 dB. It

is important that the antenna is not placed

in the near field of the radiating device.