Welch Allyn 1500 Patient Monitor v.1.4.X - User Manual - Manual (Page 112)

108 Maintenance Welch Allyn 1500 Patient Monitor
EMC compliance
The monitor is designed for use in an electromagnetic environment in accordance with
IEC/EN 60601-1-2, tables 201, 202 and 204. If the monitor is used in the vicinity of
equipment labelled with the symbol “Non-ionic electromagnetic radiation"
, check the
recommended minimum distance according to IEC/EN 60101-1-2, table 206. For further
details, please refer to the service manual.
The following table lists devices and their typical frequency ranges and transmitting
power, and the resulting minimum distances.
For transmitters not included in the above table, the recommended distance (d in meters)
can be calculated using the following formulas:
Frequency range 0.15 – 80 MHz
• d= 3.5 ÷ 3V x √P
Frequency range 80 – 800 MHz
• d = 3.5 ÷ 3V/m x √P
Frequency range 800 MHz – 2.5 GHz
• d = 7 ÷ 3V/m x √P
• d = recommended distance in meters
• P = transmitting power in watts
• V = volts
• m= meters
HF source Transmitter
frequency
[MHz]
Power
P
[W]
Distance
d
[m]
Radio telephone (micro cellular) CT1+, CT2, CT3 885-887 0.010 0.23
Cordless DECT telephone, WLAN, UMTS handy 1880-2500 0.25 1.17
Mobile phone, handy USA 850/1900 0.6 1.8
Mobile phone, handy
• GSM900 900 2 3.3
• GSM850, NMT900, DCS 1800 850, 900, 1,800 1 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