Limiting Electro-Magnetic Interference (Emi) - Samlexpower SEC-1223 Owner's Manual

SECTION 6
!
6.1
CAUTION!
Conducted and radiated noises in this unit are limited as per the applicable
National / International Standards as detailed under Compliance: EMC in
Section 8.
This unit generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, this does not guarantee that
interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to
try to correct the interference by one or more of the measures recommended
in the following paragraphs.
!
ATTENTION!
Bruits et rayonnement dans cette unité sont limitées que par la législation
nationale / normes internationales comme détaillé dans le cadre de
conformité : EMC dans la section 8.
Cet appareil génère, utilise et peut émettre une énergie de fréquence
radio et, s'il n'est pas installé et utilisé conformément aux instructions, peut
causer des interférences nuisibles aux communications radio. Cependant,
cela ne garantit pas qu'aucune interférence ne se produira dans une
installation particulière. Si cet équipement provoque des interférences
nuisibles à la réception radio ou télévision, ce qui peut être déterminé en
éteignant l'équipement, l'utilisateur est encouragé à essayer de corriger les
interférences en prenant une ou plusieurs des mesures recommandées dans
les paragraphes suivants.
6.2 UN-INTENTIONAL RF NOISE GENERATED BY SWITCHED MODE
POWER SUPPLIES (SMPS)
Switched Mode Power Supplies (SMPS) employ high frequency switching (20 to 30.5
KHz in these units) and thus, are a source of radio interference, a recipient of radio
interference and a conduit of radio interference. (Older Linear Type, low frequency
50 / 60 Hz transformer based power supplies do not employ high frequency switching
voltages and will be quieter as compared to SMPS).
The emission sources originate in the switching devices due to their fast switching
current transitions: harmonics of the switching frequency and broadband noise created
by under-damped oscillations in the switching circuit. The noise is both conducted and
radiated through the input power cord and the DC output wiring to the radio.
| Limiting Electro-Magnetic
Interference (EMI)
SAMLEX AMERICA INC. | 15