Document No.:
interruption and
voltage change
GB/T 17626.11
(on U
T
, >95% of sag)
40% U
T
, continuous for 5
weeks
(on U
T
, 60% of sag)
70% U
T
, continuous for
25 weeks
(on U
T
, 30% of sag)
<5%U
T
, continuous for
5s
(on U
T
, >95% of sag)
(on U
T
, >95% of sag)
40% U
T
, continuous for
5 weeks
(on U
T
, 60% of sag)
70% UT, continuous for
25 weeks
(on U
T
, 30% of sag)
<5%UT, continuous for
5s
(on U
T
, >95% of sag)
typical commercial or hospital
environment. If the user of
M4-HD
bladder
scanner
needs continuous operation
during power outage, M4-HD
bladder
scanner
is
recommended to be powered
by
uninterruptible
power
supply or battery.
Power frequency
magnetic field
（
50Hz
）
GB/T 17626.8
3A/m
3A/m
If image distortion occurs,
then it is necessary to keep
M4-HD bladder scanner away
from the power frequency
magnetic field source or install
magnetic
shielding.
The
power frequency magnetic
field
in
the
intended
installation site shall be
measured to ensure that it is
low enough
Note: U
T
refers to the AC network voltage prior to the application of test voltage.
Table 204
Guideline and statement of the manufacturer-electromagnetic immunity
M4-HD bladder scanner is intended for use in the electromagnetic environment specified below. The
purchaser or user shall ensure that it is used in such an environment.
Immunity test
IEC60601 test level
Compliance
level
Electromagnetic environment-guideline
Radio-frequency
transmission
GB/T 17626.6
Radio-frequency
radiation
GB/T 17626.3
3V (effective value)
150KHz
～
80MHz
3V/m
80MHz
～
2.5GHz
3V (effective
value)
3V/m
The portable and mobile
radio-frequency communication equipment
shall not be closer than the recommended
isolation distance to any use part of
M4-HD bladder scanner including cables.
And the calculation of that distance shall
use a formula corresponding to the
frequency of the transmitter.
Recommended distance
d=1.2
d=1.2
80MHz
～
800MHz
d=2.3
800MHz
～
2.5GHz
Wherein:
Maximum output power of the
