beautypg.com

Comtech EF Data SDM-2020 User Manual

Page 25

background image

SDM-2020 Satellite Demodulator

Revision 4

Preface

MN/SDM2020D.IOM

xv

EMC (Electromagnetic Compatibility)

In accordance with European Directive 89/336/EEC, the SDM-2020D Satellite
Demodulator has been shown, by independent testing, to comply with the following
standards:

Emissions:

EN 55022 Class B - Limits and methods of measurement of radio
interference characteristics of Information Technology Equipment.

(Also tested to FCC Part 15 Class B)


Immunity:

EN 50082 Part 1 - Generic immunity standard, Part 1: Domestic,
commercial and light industrial environment.


Additionally, the SDM-2020D has been shown to comply with the following standards:

EN 61000-3-2

Harmonic Currents Emission

EN 61000-3-3

Voltage Fluctuations and Flicker

EN 61000-4-2

ESD Immunity

EN 61000-4-4

EFT Burst Immunity

EN 61000-4-5

Surge Immunity

EN 61000-4-6

RF Conducted Immunity

EN 61000-4-8

Power frequency Magnetic Field Immunity

EN 61000-4-9

Pulse Magnetic Field Immunity

EN 61000-4-11

Voltage Dips, Interruptions, and Variations Immunity

EN 61000-4-13

Immunity to Harmonics

IMPORTANT

In order that the Modem continues to comply with these standards,
observe the following instructions:

• Connections to the transmit and receive IF ports (Type N and Type F, female,

connectors) should be made using a good quality coaxial cable - for example
RG58/U (50

Ω or RG59/U (75Ω).

• All 'D' type connectors attached to the rear panel must have back-shells that

provide continuous metallic shielding. Cable with a continuous outer shield
(either foil or braid, or both) must be used, and the shield must be bonded to the
back shell.

• The equipment must be operated with its cover on at all times. If it becomes

necessary to remove the cover, the user should ensure that the cover is correctly
re-fitted before normal operation commences.