
Guidance and Manufacturer’s Declaration – Electromagnetic Immunity
The FORE-SIGHT ELITE Oximeter is intended for use in the electromagnetic environment specied below. The customer or the user of the
Oximeter should insure that it is used in such an environment.
Immunity Test IEC 60601 Test Level Compliance Level Electromagnetic Environment – Guidance
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
3 Vrms
150 kHz to 80 MHz
3 V/m
80 MHz to 2.5 GHz
3 Vrms
3 V/m
Portable and mobile RF communications equipment should be used
no closer to any part of the Oximeter, including cables, than the
recommended separation distance calculated from the equation
applicable to the frequency of the transmitter.
Recommended separation distance:
d = 1.2√P
d = 1.2√P80 MHz to 800 MHz
d = 2.3√P800 MHz to 2.5 GHz
Where Pis the maximum output power rating of the transmitter in watts
according to the transmitter manufacturer and dis the recommended
separation distance in meters.
Field strengths from xed RF transmitters, as determined by an
electromagnetic site survey,ashould be less than the compliance level
in each frequency range.b
Interference may occur in the vicinity of
equipment marked with the following symbol:
Note 1 At 80 MHz and 800MHz, the higher frequency range applies.
Note 2 These guidelines may not apply in all situations. Electromagnetic propagation is effected by absorption and reection from structures,
objects and people.
a Field strengths from xed transmitters, such as base stations for radio (cellular / cordless) telephones and land mobile radios, amateur radio,
AM and FM radio broadcast and TV broadcast cannot be predicted theoretically with accuracy. To assess the electromagnetic environment
due to xed RF transmitters, an electromagnetic site survey should be considered. If the measured eld strength in the location in which the
Oximeter is used exceeds the applicable RF compliance level above, the Oximeter should be observed to verify normal operation. If abnormal
performance is observed, additional measures may be necessary, such as re-orienting or relocating the Oximeter.
b Over the frequency range 150 kHz to 80 MHz, eld strengths should be less than 3 V/m.
Recommended Separation Distances Between Portable and Mobile RF Communications Equipment and the Oximeter
The Oximeter is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or
the user of the Oximeter can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile
RF communications equipment (transmitters) and the Oximeter as recommended below, according to the maximum output power of the
communications equipment.
Rated maximum output power
of transmitter (Watts)
Separation distance according to frequency of transmitter (Meters)
150 kHz to 80 MHz
d = 1.2√P
80 MHz to 800 MHz
d = 1.2√P
800 MHz to 2.5 GHz
d = 2.3√P
0.01 0.12 0.12 0.23
0.1 0.38 0.38 0.73
11.2 1.2 2.3
10 3.8 3.8 7.3
100 12 12 23
For transmitters operating at a maximum output power not listed above, the recommended separation distance din meters can be estimated
using the equation applicable to the frequency of the transmitter, where Pis the maximum output power rating of the transmitter in watts
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 reection from structures,
objects, and people.
iv CAS Medical Systems, Inc.