Welch Allyn 53000 Directions For Use Manual page 86

80 Chapter 7 Reference
Recommended separation distances between portable and mobile RF communications equipment and the
The Vital Signs Monitor 300 Series monitor is intended for use in an electromagnetic environment in which radiated RF
disturbances are controlled. The customer or the user of the Vital Signs Monitor 300 Series monitor can help prevent
electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications
equipment (transmitters) and the Vital Signs Monitor 300 Series monitor as recommended below, according to the
maximum output power of the communications equipment.
Rated maximum output
power of transmitter
For transmitters rated at a maximum output power not listed above, the recommended separation distance d in meters
(m) can be estimated using the equation applicable to the frequency of the transmitter, where P is the maximum output
power rating of the transmitter in watts (w) according to the transmitter manufacturer.
NOTE 1 At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and
Other Environmental Specifications
Operating Temperature
SpO2, NIBP, pulse rate, and
temperature measurement
Operating altitude
Shipping altitude
Storage temperature
Relative humidity
Vital Signs Monitor 300 Series monitor
150 kHz to 80 MHz
W
d = 1.2
0.01
0.1
1
10
100
reflection from structures, objects and people.
Characteristic
+10 °C to +40 °C
+50 °F to +104 °F
-170 m to +4877 m
-557 ft to + 16,000 ft
-615 m to 12,300 m
-2000 ft to 40,000 ft
-20 °C to +50 °C
-4 °F to +122 °F
15% to 90% (non-condensing)
Separation distance according to frequency of transmitter
(meters)
80 MHz to 800 MHz
d = 1.2
P
0.12 0.12
0.38 0.38
1.2 1.2
3.8 3.8
12 12
Specification
Welch Allyn Vital Signs Monitor 300 Series
800 MHz to 2.5 GHz
d = 2.3
P P
0.23
0.73
2.3
7.3
23