2
Holter ABPM
Hardware, description of device for custo screen 400
MHW 0004 – DK 1663 | Version 001 – 12/01/2018 | custo med GmbH
[2] Holter ABPM Hardware, custo screen 400 |
page 26
Manufacturer’s declaration – electromagnetic immunity
The custo screen 400 Holter ABPM recorder is designed for use in the electromagnetic environment stated below.
The customer or user of the custo screen 400 should make sure that it is used in such an environment.
COMMENT 1:
With 80 MHz and 800 MHz the higher frequency range is valid.
COMMENT 2:
These guidelines may not apply in every case. The propagation of electromagnetic variables is influenced by
absorptions and reflections of buildings, objects and people.
a)
The field strength of stationary transmitters, such as e.g. base stations of mobile phones and land mobile
radios, amateur radio stations, AM and FM broadcasting as well as television networks cannot be exactly
predetermined theoretically. In order to determine the electromagnetic environment regarding the stationary
transmitters, a study of the location should be considered. If the measured field strength exceeds the above-
mentioned compliance levels at the location where the device is used, the device should be watched in order
to prove the intended functions. If unusual performance features are observed, it may be necessary to take
additional measures, for example reorienting or relocating the device.
Immunity tests
Conducted RF disturbances
according to IEC 61000-4-6
Radiated RF disturbances
according to IEC 61000-4-3
IEC 60601 test level
3 V
effective value
150 KHz to 80 Mhz
3 V/m
80 MHz to 2.5 GHz
Compliance level
[U
1
] V
Not applicable
3 V/m
Electromagnetic environment - guidelines
Portable and mobile radio sets should not be used at a
closer distance to the device including the leads than the
recommended protective distance which is determined
according to the equation applicable to the frequency of
the transmitter.
Recommended protective distance:
d = (3.5/U1) √P
d = (3.5/E
1
) √P
80 MHz to 800 MHz
d = (7/E
1
) √P
800 MHz to 2.5 GHz
with P as the nominal power of the transmitter in watt
(W) according to the indications of the transmitter
manufacturer and d as the recommended protective
distance in meters (m).
According to an examination on site
a)
the field strength
of stationary radio transmitters should be lower than the
compliance level with regard to all frequencies.
In the vicinity of devices carrying the following symbol,
interference is possible:
