MHW 0008 – DK 1695 | Version 002 – 21/08/2019 | custo med GmbH
2
Holter
Hardware, description of device for custo watch
[2] Holter hardware, custo watch |
page 24
Recommended protective distances between portable
and mobile RF telecommunication devices and custo watch
custo watch is designed for use in an electromagnetic environment in which the RF transients can be controlled.
The user can help avoid electromagnetic interference by maintaining the minimum distance between portable
and mobile RF telecommunication devices (transmitters) and the device – depending on the power output of the
communication device, as indicated below.
WARNING:
Wearable RF communication devices (radio devices) (including their accessories, e.g. antenna cables
and external antennas) should not be used at distances of less than
30 CM
(12 inches) from the custo watch
parts and leads described by the manufacturer. Failure to observe this warning can compromise the performance
of the device.
WARNING:
Use of this device directly next to other devices or stacked together with other devices should be
avoided, as this could result in fault operation. If the devices must nonetheless be used as described above, this
device and the other devices should be monitored to ensure proper functionality.
a) For some radio services, on the frequencies for the radio connection of mobile communication devices to the
base station (uplink) were included in the table.
COMMENT on protection clearances: The minimum clearances for increased immunity test levels must be
calculated using the following equation:
where P is the maximum output in Watt (W), d the minimum clearance in metres (m) and E the immunity test
level in Volt per metre (V/m).
General COMMENTS:
These guidelines may not apply in every case. The propagation of electromagnetic variables is influenced by
absorptions and reflections of buildings, objects and people.
ൌ
כ ξ
Frequency band
a)
MHz
380 to 390
430 to 470
704 to 787
800 to 960
1700 to 1990
2400 to 2570
5100 to 5800
Radio service
a)
TETRA 400
GMRS 460, FRS 460
LTE Band 13, 17
GSM 800/900,
TETRA 800, iDEN 820,
CDMA 850, LTE Band 5
GSM 1800, CDMA 1900,
GSM 1900, DECT,
LTE Band 1, 3, 4, 25,
UMTS
Bluetooth,
WLAN 802.11 b/g/n
RFID 2450, LTE Band 7
WLAN 802.11 a/n
Maximum output in W
1.8
2
0.2
2
2
2
0.2
Clearance in m
0.3
0.3
0.3
0.3
0.3
0.3
0.3
Immunity test level in V/m
27
28
9
28
28
28
9
