P300H P300 Series Modem Installation and Operating Handbook Page 7
1 EMC (ELECTROMAGNETIC COMPAT IBIL ITY) AND SAFETY NOTICES
IMPORTANT - PLEASE READ THIS INF O RMATION BEFORE INSTALLATION AND USE
1.1 EMC
(ELECT ROMAGNET IC COMPATIB ILITY)
The P300 Modem Satellite Modems have been shown to comply with the followi ng s tandards:
Emissions: EN 55022 Class B; Limits and methods of measurement of radio interference
characteristics of Information Technology Equipment.
Immunity: EN 50024 Information technology equipment immunity charact eristics
Extensive testing has been performed to ensure that the unit meets these specifications when configured
with an y or all of its a vailable opt i o n s , s u c h a s IF band, impedance, IF synthesiser step size, data rates, etc.
To ensure that the P300 Modems will maintain compliance with these standards please ensure that the
following points are observed:
1) The equipment MUST BE OPERATED WITH ITS COVER ON AT ALL TIMES. If it is necessary
to remove the cover for any reason, then you must ensure that the co ver is correc tly refitted before
normal operation.
2) Damage to the front panel keyboard membrane or mechanical damage to the chassis could
invalidate compliancy. Please contact the factory if damage occurs for advice on continued
operation.
3) F or the baseband dat a i nterfaces all 'D' type connectors must have grounding fingers on the plug
shell to guarantee continuous shielding. The back -shells m ust compl y to the requirements of VDE
0871 and FCC 20708, providing at least 40dB of attenuat i on from 30 MHz to 1 GHz. A good quality
cable with a continuous outer shield, correctly grounded, must be used.
4) Connect i ons to t he trans mit and receive IF interfaces m ust be made with double screened coaxial
cable - for example RG223/U.
Installations which ignore these requirements will invalidate the compliancy to EMC
specifications.
1.2 SAFETY
To ensure operator safety the P300 Modems have been designed to comply with the following safety
standard:
EN 60950 Safety of Information Technology Equipment, including electrical business machines.
Prior to installation and operation, please ensure that the following points are observed: