Advantech SSPB-3000C, Инструкция по установке и эксплуатации, Страница: 8 / 55

SSBP-3000C
Page 7
Incorporate the terminations prior to applying prime power to the transmitter. This procedure
prevents self-oscillation and irradiation from and into the local environment. If the IF input of the
transmitter is not connected to a RF source, the unit may go into a self-induced mode and generate
high levels of RF energy. Destruction caused by an excessive load voltage standing wave ratio
(VSWR) will void the warranty.
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WARNING ---------------------------------------------
--
DO NOT LOOK INTO THE RF OUTPUT PORT OF THE POWERED TRANSMITTER!
Handle the unit with extreme care. Although the levels of microwave radiation do not induce
immediate physical discomfort in most individuals, the levels may be sufficiently high to induce
long-term effects. The eyes are the most vulnerable parts of the body.
The maximum permissible levels of RF exposure are quite low compared to the power levels
emitted by the transmitters built by Advantech (e.g. less than 10 mW versus 10 to 500 W for the
units). The maximum permissible levels are currently being studied by a number of organisations.
In the past, the U.S. Safety Code established a dosage rate of 10 mW/cm
2
. Currently, consideration
is being given to reduce the permissible level to 1 mW/cm
2
in the United States, as has been the
case for several European countries.
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CAUTION --------------------------------------------
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THE TRANSMITTER UNIT IS HEAVY! TWO INDIVIDUALS OR A LIFTING DEVICE
MUST BE USED TO LIFT AND MOVE THE UNIT. There is a risk of back injury, if carried
or lifted by a single person.
In addition to this Section, included by reference are the following pertinent sections of the
International Standard IEC-215, ‘Safety requirements for radio transmitting equipment’:
Appendix D, ‘GUIDANCE ON ASSESSING THE COMPETENCE OF PERSONNEL FOR
DESIGNATION AS SKILLED’ and also Sub-clause 3.1 of the Standard.
Appendix E, ‘GUIDANCE ON SAFETY PRECAUTIONS TO BE OBSERVED BY PERSONNEL
WORKING ON RADIO TRANSMITTING EQUIPMENT’ and also Sub-clauses 3.2, 3.7 and 22.1
of the Standard.