
1-16
K-MAR-5200 Instructions for Use
English
Recommended separation distance between portable and mobile RF communications equipment and the Vacuum Pump
The Vacuum Pump is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or the user of
the Vacuum Pump can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications
equipment (transmitters) and the Vacuum Pump 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 = 1.2 √P)
80 MHz to 800 MHz
(d = 1.2 √P)
800 MHz to 2.5 GHz
(d = 2.3 √P)
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
Proximity fields from RF wireless communication equipment
Test frequency
(MHz)
Band
a
(MHz)
Service
a
Modulation
b
Maximum
power
(W)
Distance
(m)
Immunity test
level
(V/m)
Minimum
separation distance
(m)
385
360-390
TETRA 400
Pulse
modulation
b
18 Hz
1.8
0.3
27
0.3
450
430-470
GMRS 460
FRS 460
FM
C
±5 kHz deviation
1 kHz sine
2
0.3
28
0.3
710
704-787
LTE Band 13,17
Pulse
modulation
b
217 Hz
0.2
0.3
9
0.3
745
780
810
800-960
GSM 800/900
TETRA 800
iDEN 820
CDMA 850
LTE Band 5
Pulse
modulation
b
217 Hz
2
0.3
28
0.3
870
930
1720
1700-1990
GSM 1800
CDMA 1900
DECT
LTE Band 1, 3,
4, 25; UMTS
Pulse
modulation
b
217 Hz
2
0.3
28
0.3
1845
1970
2450
2400-2570
Bluetooth
WLAN
802.11 b/g/n RFID
2450
LTE Band 7
Pulse
modulation
b
217 Hz
2
0.3
28
0.3
5240
5100-5800
WLAN 802.11
a/n
Pulse
modulation
b
217 Hz
0.2
0.3
9
0.3
5500
5785
Note:
if necessary to achieve the IMMUNITY test level, the distance between the transiting antenna and the ME equipment or ME system may be reduced to
1m. The 1m test distance is permitted by IEC 61000-4-3.
a
For some services, only the uplink frequencies are included.
b
The carrier shall be modulated using a 50% duty cycle square wave signal.
c
As an alternative to FM modulation, 50% pulse modulation at 18Hz may be used because while it does not represent actual modulation, it would be worst case.
1
Содержание K-MAR-5200
Страница 20: ...1 ...
Страница 38: ...2 ...
Страница 56: ...3 ...
Страница 74: ...4 ...
Страница 92: ...5 ...
Страница 110: ...6 ...
Страница 128: ...7 ...
Страница 146: ...8 ...
Страница 164: ...9 ...
Страница 182: ...10 ...
Страница 200: ...11 ...
Страница 218: ...12 ...
Страница 236: ...13 ...
Страница 254: ...14 ...
Страница 272: ...15 ...
Страница 290: ...16 ...
Страница 291: ...Notes ...
Страница 292: ...Notes ...
Страница 293: ...Notes ...