Page 5
1062DOC Rev C
Effective date: 6-Mar-14
RAMVAC Bulldog
®
QT
User Guide
Recommended separation distances
between portable and mobile RF communications equipment and the Bulldog
The Bulldog is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or the user of
the Bulldog can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications
equipment (transmitters) and the Bulldog 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
80 MHz to 800 MHz
800 MHz to 2,5 GHz
0,01
0.12
0.12
0.23
0,1
0.38
0.38
0.73
1
1.2
1.2
2.3
10
3.8
3.8
7.3
100
12
12
23
For transmitters rated at a maximum output power not listed above, the recommended separation distance
d
in metres (m) can be estimated using
the equation applicable to the frequency of the transmitter, where
P
is the maximum output power rating of the transmitter in watts (W) according
to the transmitter manufacturer.
NOTE 1 At 80 MHz and 800 MHz, the separation distance for 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.
P
d
2
.
1
=
P
d
2
.
1
=
P
d
3
.
2
=
EMC INFORMATION
Guidance and manufacturer’s declaration –electromagnetic immunity
The Bulldog is intended for use in the electromagnetic environment specified below. The customer or the user of the Bulldog 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
3 Vrms
150 kHz to 80 MHz
3 V/m
80 MHz to 2,5 GHz
Does Not
Comply
Does Not
Comply
Portable and mobile RF communications equipment should be used no closer
to any part of the Bulldog, including cables, than the recommended separation
distance calculated from the equation applicable to the frequency of the
transmitter.
Recommended separation distance
P
d
2
.
1
=
P
d
2
.
1
=
80 MHz to 800 MHz
P
d
3
.
2
=
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 metres (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 [ME EQUIPMENT or ME SYSTEM] is used exceeds
the applicable RF compliance level above, the [ME EQUIPMENT or ME SYSTEM] should be observed to verify normal operation. If abnormal performance is
observed, additional measures may be necessary, such as re-orienting or relocating the [ME EQUIPMENT or ME SYSTEM].
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
