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Document Title:
Document No.: DS101-SDUS01-01303
Product Name: Electronic Stethoscope DS101
510(k) File Name: 003_Electronic Stethoscope DS101 User Manual
portable and mobile RF communications equipment and the DS101
The DS101 is intended for use in an electromagnetic environment (for professional healthcare) in which radiated RF
disturbances are controlled. The customer or the user of the DS101 can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and the
DS101 as recommended below, according to the maximum output power of the communications equipment.
Rated maximum output power of
transmitter
W
0,01
0,1
1
10
100
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.
NOTE1 At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
NOTE2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and
reflection from structures, objects and people.
Electronic Stethoscope DS101 User Manual
Recommended separation distance between
Separation distance according to frequency of transmitter
150 kHz to 80 MHz
d =1,2√
P
N/A
N/A
N/A
N/A
N/A
m
80 MHz to 800 MHz
800 MHz to 2,7 GHz
d =1,2√
P
0,12
0,38
1,2
3,8
12
Page:
47 of 50
Ver.:
A1
Date:
2017/8/26
d =2,3√
P
0,23
0,73
2,3
7,3
23
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