61
survey
a
, which should be
one
b
lower than the
corresponding level in each
frequency range.
Disturbance may occur
near equipment marked
with the following
symbols.
Note 1
：
The formula of higher frequency band is used at 80MHz and 800MHz
frequencies.
Note 2
：
These guidelines may not be suitable for all situations. Electromagnetic
propagation is affected by the absorption and reflection of buildings, objects and
human bodies.
a
Fixed transmitters, such as base stations of wireless (cellular/cordless)
telephones and ground mobile radios, amateur radios, AM and FM radio broadcasting
and television broadcasting, can not accurately predict their field strength in theory. In
order to evaluate the electromagnetic environment of fixed radio frequency transmitter,
the survey of electromagnetic field should be considered. If the field intensity of
SK-3000A is higher than that of RF, the equipment should be observed to verify its
normal operation. If abnormal performance is observed, supplementary measures
may be necessary, such as reorientation of the direction or position of the ophthalmic
AB ultrasound diagnostic instrument (SK-3000A).
b
In the whole frequency range of 150 kHz-80 MHz, the field intensity should be
less than 3V/M
Recommended Isolation Distance between Portable and Mobile Radio Frequency
Communication Equipment and Ophthalmic AB Ultrasound Diagnostic Instrument
(SK-3000A)
Ophthalmological AB-type ultrasound diagnostic instrument (SK-3000A) is
expected to be used in radio frequency radiation disturbance controlled
electromagnetic environment. According to the maximum rated output power of
communication equipment, the buyer or user can prevent electromagnetic interference
by maintaining the minimum distance between portable and mobile radio frequency
communication equipment (transmitter) and ophthalmic AB ultrasonic diagnostic
instrument (SK-3000A) recommended below.
Maximum
rated output
power of
transmitter W
Isolation distance corresponding to different frequencies of
transmitter /m
150kHz -
80MHz
P
d
2
.
1
=
80MHz -
800MHz
P
d
2
.
1
=
800MHz - 2.5GHz
P
d
3
.
2
=
0.01
0.12
0.12
0.23
0.1
0.38
0.38
0.73
Содержание SK-3000A
Страница 12: ...11 1 12 Label This label information is stick on main body of Ophthalmic ultrasound ...
Страница 28: ...27 4 5 P scan Test Interface 1 Eye Switch left eye and right eye ...
Страница 30: ...29 4 6 B scan Test Interface 1 Eye Switch left eye and right eye ...
Страница 35: ...34 ...
Страница 41: ...40 2 Click Properties 3 Double click Internet protocol version 4 ICP IPv4 ...
