OSRAM DULUX F - Manual (Page 42)

Economical long-life light sources with plug-in bases
Compact Fluorescent Lamps OSRAM DULUX ®
Technical Guide
40
2.3.8 Radiation components in the infra-red range
Fluorescent lamps emit radiation at wavelengths which are also used for infra-red transmissions.
Since the IR receivers used for televisions, wireless headphones and sound transmission systems,
for example, are often not sufficiently selective there may be interference in the IR system, particu-
larly with lamps operated by electronic control gear, if light or optical radiation from the lighting
system enters the IR receiver. The light emitted by a fluorescent lamp is essentially modulated at
twice the operating frequency (50 to 250 kHz in the case of electronic control gear and 100 or 120
Hz in the case of conventional control gear). Interference may occur if the useful signal is also oper-
ating in this frequency range.
Audio transmission
For further information on this topic please consult the OSRAM QUICKTRONIC ® technical guides or
visit www.osram.com/quicktronic .
IR remote control
Interference-free operation is possible with systems that work with a sufficiently high carrier fre-
quency (400 to 1500 kHz). If interference occurs in systems or equipment operating at a lower car-
rier frequency, it is best to move the IR receiver as far as possible away from the radiation footprint
of the lamp or shield it from direct light.
For further information on this topic please consult the OSRAM QUICKTRONIC ® technical guides or
visit www.osram.com/quicktronic .
Electronic merchandise security systems
In many shops nowadays, merchandise such as CDs and clothing is protected against theft by
electronic security systems. These systems typically operate with resonances in the kHz range. If
the operating frequency is between 30 kHz and 150 kHz it may lead to interference. Such interfer-
ence can be avoided by increasing the distance between the light fittings and the transmit-
ting/receiving system.
For further information on this topic please consult the OSRAM QUICKTRONIC ® technical guides or
visit www.osram.com/quicktronic .