Advantech PWS-1419 Manual do Utilizador descarregar pdf (Página 11)

Report Number: 021245-F

December 3, 2002

Page

Rev.

MEASUREMENT PROCEDURE

(PRELIMINARY RADIATED EMISSION TEST)

1) The equipment was set up as per the test configuration to simulate typical actual usage per the user’s

manual. When the EUT is a tabletop system, a wooden turntable with a height of 0.8 meters is used

which is placed on the ground plane as per ANSI C63.4 (see Test Facility for the dimensions of the

ground plane used). When the EUT is a floor-standing equipment, it is placed on the ground plane

which has a 3-12 mm non-conductive covering to insulate the EUT from the ground plane.

2) Support equipment, if needed, was placed as per ANSI C63.4.

3) All I/O cables were positioned to simulate typical actual usage as per ANSI C63.4.

4) The EUT received AC power source from the outlet socket under the turntable. All support

equipment received 110VAC/60Hz power from another socket under the turntable.

5) The antenna was placed at 10 meter away from the EUT as stated in ANSI C63.4. The antenna

connected to the Analyzer via a cable and at times a pre-amplifier would be used.

6) The Analyzer / Receiver quickly scanned from 30MHz to 5000MHz. The EUT test program was

started. Emissions were scanned and measured rotating the EUT to 360 degrees and positioning the

antenna 1 to 4 meters above the ground plane, in both the vertical and the horizontal polarization, to

maximize the emission reading level.

7) The following test mode(s) were scanned during the preliminary test:

Mode(s):

1. 1024 x 768 Resolution / 100Mbps

2. 1024 x 768 Resolution / 10Mbps

8) After the preliminary scan, we found the following test mode producing the highest emission level.

Mode: 1.

Then, the EUT and cable configuration, antenna position, polarization and turntable position of the above

highest emission level were recorded for reference of final testing.

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Advantech PWS-1419 Manual do Utilizador Página 11