Comtech EF Data CDM-550T - Manual (Page 18)

CDM-550T Satellite Modem Revision 3
Preface MN/CDM550T.IOM
xvi
Examples of acceptable ratings for the cable include HAR, BASEC and HOXXX-X. Examples of
acceptable connector ratings include VDE, NF-USE, UL, CSA, OVE, CEBEC, NEMKO,
DEMKO, BS1636A, BSI, SETI, IMQ, KEMA-KEUR and SEV.
International Symbols
Symbol Definition Symbol Definition
~
Alternating Current Protective Earth
Fuse Chassis Ground
Telecommunications Terminal Equipment Directive
In accordance with the Telecommunications Terminal Equipment Directive 91/263/EEC, this
equipment should not be directly connected to the Public Telecommunications Network.
EMC (Electromagnetic Compatibility)
In accordance with European Directive 89/336/EEC, the CDM-625 Modem 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.
IMPORTANT
To ensure that the Modem continues to comply with these standards,
observe the following instructions:
• Connections to the transmit and receive IF ports (BNC 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.