Rf Shielding; Rules For Operating The Transmitter; Rules For Working With An Open Transmitter - R&S N 8000 Series System Manual

quency hazards of the individual transmitter or instrument. Only after such training has
been provided and documented may the operating personnel handle switching and op-
erating tasks.
High-energy RF circuits within the transmitter or the instrument are routed via conventional
detachable RF connectors (e.g. N). Depending on the output power, the transmitter or in-
strument outputs come with screw-in or pluggable RF lines or ducts.
If RF lines or modules conduct high power, the connection point or the entire module is
marked with the standard warning symbol (yellow triangle with black exclamation mark).
4.3.2

RF Shielding

Transmitters and instruments from Rohde & Schwarz are shielded in such a manner that
RF radiation does not pose any danger even in the immediate vicinity if all RF lines are
closed. This statement is based on the ordinance for electromagnetic fields as defined in
German law:
The 26th ordinance for the Federal Emission Protection Law dated December 16, 1996 de-
fines limit values for radio-frequency equipment for electric and magnetic field strengths.
4.3.3

Rules for Operating the Transmitter

Opening RF lines during operation may cause electric arcs. This can cause burns and eye
injuries.
Operate the transmitter system only if an antenna or dummy antenna is connected.
Never undo RF lines during transmitter operation.
Never open modules during transmitter operation.
Never put transmitters into operation if RF lines are open.
When disconnecting a transmitter, always disconnect the antenna connector as well. If
other transmitters, etc, are in operation that are coupled to the same antenna via RF fil-
ters, energy from them can be fed back via the antenna cable.
4.3.4

Rules for Working with an Open Transmitter

If you switch on an open transmitter and remove covers and shielding that carry the general
warning symbol of RF modules, dangerous RF levels will be radiated .
The transmitter operator is responsible for strict compliance with the necessary safety pre-
cautions when someone is working with or located near an open transmitter that is switched
on.
Necessary safety regulations include:
3 If you try to put the transmitter into operation, RF power is transmitted. If RF lines are open, the transmitter
switches off the RF again. This attempt to transmit RF can lead to the above mentioned risks of injury even if
- as is the case with Rohde & Schwarz transmitters - the RF flow is limited and transient due to technical mea-
sures.
2098.1190.72
Chapter 1
- 1.7 -
Safety Instructions
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