Sedecal SHF-415 - Page 20

HF Series Generators -- RAD Console
Operation
OM- 0279R1
12
GUIDANCE AND MANUFACTURER’S DECLARATION -- ELECTROMAGNETIC IMMUNITY
This X--Ray Generator is intended for use in the electromagnetic environment specified below.
The customer or the user of this X--Ray Generator should assure that it is used in such an environment.
Immunity test IEC 60601 test level Compliance level Electromagnetic environment -- guidance
Conducted RF
IEC 61000--4--6
Radiated RF
IEC 61000--4--3
3Vrms
150kHz to 80MHz
3V/m
80MHz to 2.5GHz
3Vrms
150kHz to 80MHz
3V/m
1 GHz to ..5GHz
Portable and mobile RF communications
equipment should be used no closer to any
part of this Mobile Unit, including cables, than
the recommended separation distance
calculated from the equation applicable to the
frequency of the transmitter.
Recommended separation distance
where ’P’ is the maximum output power rating
of the transmitter in watts (W) according to the
transmitter manufacturer and ’d’ is the
recommended separation distance in meters
(m).
Field strengths from fixed RF transmitters, as
determined by an electromagnetic site
survey
a
), should be less than the compliance
level i n each frequency range
b
).
Interference may occur in the vicinity of
equipment marked with the following symbol:
d = 1.2 P

d = 2.3 P

, 800 MHz to 2.5 GHz
d =

3.5∕E
1

P

, 80 MHz to 800 MHz
NOTE 1 -- At 80MHz and 800MHz, the higher frequency range applies.
NOTE 2 -- These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from
structures, objects and people.
Note: In the 3rd equation of the 4th column, the constant parameter has a value of 2.3 for frequencies between 1 GHz and 2.5 GHz.
No information is given for frequencies between 80 MHz and 1 GHz.
a)
Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile radios, amateur
radio, AM and FM radio broadcast and TV broadcast cannot be predicted theoretically with accuracy. To assess the electromagnetic
environment due to fixed RF transmitters, an electromagnetic site survey should be considered. If the measured field strength in the
location in which this X--Ray Generator is used exceeds the applicable RF compliance level above, this X--Ray Generator should be
observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as re--orienting
or relocating this X--Ray Generator.
b)
Over the frequency range 150kHz to 80MHz, field strengths should be less than 3 V/m.