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10
Maintenance
10.9 Error Detection
Page 126
A
rt.
no.
: 0-48-
0227
Rev.:
g
DEFIGARD/PHYSIOGARD Touch 7
10.9.3
Measures to prevent electromagnetic interferences
Further measures to prevent electromagnetic interferences:
The user can take the following measures to prevent electromagnetic interferences:
• Increase distance to the source of interference.
• Turn the device to change the angle of radiation.
• Connect the device to a different mains connector.
• Only use original accessories (especially patient cables)
• The device should not be used adjacent to or stacked with other equipment.
“Non-ionic electromagnetic radiation"
The user can help avoid electromagnetic disturbances by keeping the minimum
distance between portable and mobile RF telecommunication devices (transmitters)
and the DEFIGARD/PHYSIOGARD Touch 7. The distance depends on the output
performance of the communication device as indicated below.
HF source
Transmitter fre-
quency
[MHz]
Power P
[W]
Distance d
[m]
Radio telephone (microcellular) CT1+, CT2,
CT3
885-887
0.010 0.23
Cordless DECT telephone, WLAN, UMTS
phone
1880-2500
0.25
1.17
Mobile phone USA
850/1900
0.6
1.8
Mobile phone
- GSM900,
- GSM850, NMT900, DCS 1800
900
850,900,1800
2
1
3.3
2.3
Walkie-talkie (rescue service, police, fire
brigade, service)
81-470
5
2.6
Mobile telephone system (rescue service,
police, fire brigade)
81-470
100
11.7
RFID (active and passive transponders and
reading devices)
433
865-868
0.5
0.85
1.62
It can be deducted from the table that
portable
RF telecommunication devices must
not be used within a radius of 3 m from the device and its cables.
However, there is no guarantee that no interference can occur in certain
installations. If the DEFIGARD/PHYSIOGARD Touch 7 causes interferences,
these can be prevented by switching off the device.
For more detailed information, please refer to page
156.