PLTX Digital Power Amplifier User Manual
General Information
Issue No: 01
Page: 1
Ref: PLTX-ASUM-7xxx
Copyright © 2017 IMT Ltd, trading as Vislink
The personnel concerned with the operation or maintenance of the equipment must study
and understand the following health and safety information, together with local site
regulations to ensure awareness of potential hazards.
WARNING: RF Power Hazard: High levels of RF power are present in the unit. Exposure to
RF or microwave power can cause burns and may be harmful to health.
WARNING: GaAs/BeO Hazard: Certain components inside the equipment contain toxic
substances, such as Gallium Arsenide and Beryllium Oxide. While these are safe
to handle under normal circumstances, individual components must not be cut,
broken apart, incinerated or chemically processed. In the case of Beryllium
Oxide, a white ceramic material, the principal hazard is from the dust or fumes,
which are carcinogenic if ingested, inhaled or enter the body via damaged skin.
Please consult your local authority before disposing of these components.
CAUTION Tantalum Capacitors: When subjected to reverse or excess forward voltage,
ripple current or temperature these components may rupture and could
potentially cause personal injury.
CAUTION: This system contains MOS devices. Ensure you use adequate Electro-Static
Discharge (ESD) precautions to prevent accidental damage.
The safe working distance from a transmitting antenna may be calculated from the
relationship:
D =
In which:
D = safe working distance (metres)
PT = transmitter or combiner power output (Watts)
GR = antenna gain ratio = anti log (gain dBi ÷ 10)
w = power density (Watts/square metre)
The RF power density value is determined by reference to safety guidelines for exposure of
the human body to non-ionising radiation. It is important to note that the guidelines
adopted differ throughout the world and are from time-to-time re-issued with revised
guidelines. For Vislink use, apply a maximum power density limit of 1W/m² when
calculating minimum safe working distances.
WARNING: Any transmitting equipment radiating power at frequencies of 100 kHz and
higher, has the potential to produce thermal and athermal effects upon the
human body.
P
T
. G
R
4
W
