Mallinckrodt INOmax DSIR Plus MRI Operation Manual page 142

portable and mobile RF communications equipment and the
INOmax DS
The INOmax DS Plus MRI system is intended for use in an electromagnetic environment in which
IR
radiated RF disturbances are controlled. The user of the INOmax DS
electromagnetic interference by maintaining a minimum distance between portable and mobile RF
communications equipment (transmitters) and the INOmax DS
according to the maximum output power of the communications equipment.
Rated
Maximum
Output
150 kHz to 80 MHz
Power of
Outside ISM bands
Transmitter
d=1.2*
W
0.01 0.12
0.1 0.38
1 1.2
10 3.8
100 12
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 reflection from structures, objects and people.
NOTE 3: An additional factor of 10/3 is used in calculating the recommended separation distance for
transmitters in the ISM frequency bands between 150 kHz and 80 MHz and in the frequency
range 80 MHz to 2.5 GHz to decrease the likelihood that mobile/portable communications
equipment could cause interference if it is inadvertently brought into patient areas.
NOTE 4: These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects, and people.
7-8
Recommended separation distances between
Plus MRI system (with GaussAlert™ alarms)
IR
Separation distance according to frequency of transmitter
150 kHz to 80 MHz
In ISM bands
P d=1.2* P
√ √
0.12
0.38
1.2
3.8
12
Plus MRI system can help prevent
IR
Plus MRI system as recommended below,
IR
m
80 MHz to 800 MHz 800 MHz to 2.5 GHz
d=1.2* P
√
0.12
0.38
1.2
3.8
12
d=2.3* P
√
0.23
0.73
2.3
7.3
23
Part No. 20568 Rev-02
2015-08