Spellman XRB011, Инструкция по эксплуатации

Страница: 32 / 102

SPELLMAN HIGH VOLTAGE Trouble Shooting
4
Installation and Operating Manual
– XRB011
Page 4-27 118149-001 REV F
Recommended separation distance
Conducted RF
IEC 61000-4-6
3 Vrms
150 kHz to 80 MHz
3 Vrms
d
= 1.17 √
P
Radiated RF
IEC 61000-4-3
3 V/m
80 MHz to 2.5 GHz
3 V/m
d
= 1.17 √
P 80 MHz to 800 MHz
d
= 2.33 √
P 800 MHz to 2.5 GHz
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 in each
frequency range.
b
Interference may occur in the vicinity of equipment
marked with the following symbol:
NOTE 1 At 80 MHz and 800 MHz, 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.
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 the XRB011 is used exceeds the applicable RF
compliance level above, the XRB011 should be observed to verify normal operation. If abnormal performance is observed,
additional measures may be necessary, such as re-orienting or relocating the XRB011.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
TABLE 4
– RECOMMENDED SEPARATION DISTANCES BETWEEN PORTABLE AND MOBILE RF
COMMUNICATIONS EQUIPMENT AND THE ME EQUIPMENT OR ME SYSTEM
– FOR ME
EQUIPMENT AND ME SYSTEMS THAT ARE NOT LIFE-SUPPORTING
Recommended separation distances between portable and mobile RF communications equipment
and the XRB011
The XRB011 is intended for use in an electromagnetic environment in which radiated RF disturbances are
controlled. The customer or the user of the XRB011 can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment (transmitters)
and the XRB011 as recommended below, according to the maximum output power of the communications
equipment.
Rated maximum
output
power of
transmitter
W
Separation distance according to frequency of transmitter
m
150 kHz to 80 MHz
d = 1.17
√P
80 MHz to 800 MHz
d = 1.17
√P
800 MHz to 2,5 GHz
d = 2.33
√P
0.01 0.117 0.117 0.233
0.1 0.370 0.370 0.737