5300.9677.72 - 1.10 - EN-4
Chapter 1 Safety
Transmitters and instruments supplied by Rohde & Schwarz are shielded so that even in
the immediate vicinity there is no danger from RF radiation when all RF lines are connected.
The field strengths comply with the specifications contained in EU directive 1999/519/EC
and the 26th ordinance to the German Federal Government's Emission Control Act of De-
cember 16, 1996 (26. BImSchV), Emission limit values for electrical and magnetic field
strengths of high frequency installations.
These low levels of field strength can only be guaranteed if all RF cables have been con-
nected and modules have been closed.
4.3.4 Rules of Conduct for Transmitter Operation
Disconnecting RF cables that are operational can result in arcs. These may cause burns
and snow blindness.
1
The transmitter system can only be operated when an operating or dummy antenna is
connected.
Do not disconnect any RF cables when the transmitter is operational.
Never operate the transmitter when RF cables have been disconnected.
The antenna feedpoint must also be disconnected when the transmitter is being discon-
nected. Please note that the antenna cable can feed energy from operational transmit-
ters that are connected to the same antenna via an RF diplexer.
Do not open any modules while the transmitter is operational.
4.3.5 Rules of Conduct for Working on Open Transmitters
Dangerous levels of RF will be radiated if a transmitter is turned on after it has been opened
and covers and shielding with general warning labels have been removed from RF mod-
ules.
It is the responsibility of the operator to ensure that proper safety procedures related to the
presence of personnel and work on a transmitter that has been opened be strictly followed.
The necessary safety regulations include:
Display RF radiation hazard signs at the workplace
Wear RF protective clothing
Take special precautions for persons with metal implants, pacemakers, etc, who are
particularly at risk.
4.4 Risk of Lightning Strike
The antenna system must be suitably designed to prevent hazards due to lightning strike.
1 Any attempt to operate the transmitter results in the emission of RF power. The disconnection of RF cables
will turn the RF produced by the transmitter off. Any such attempt to transmit RF can bring about the risk of
injury mentioned above, even if, as in the case of Rohde & Schwarz transmitters, technical measures are tak-
en to limit the seepage of RF to <60 s.
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