Dexcom SEVEN - Page 137

Seven
™
System User’s Guide | 133
Guidance and Manufacturer’s Declaration- Electromagnetic Immunity
e Receiver is intended for use in the electromagnetic environment specified
below. e customer or the user of the Receiver should assure 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 k Hz to 80
MHz
3 V/m
80 MHz to 2.5
GHz
3 V
3 V/m
Portable and mobile RF communications equipment should be
used no closer to any part of the Seven Receiver, 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
½
d = 1.2 P
½
80 MHz to 800 MHz
d = 2.3 P
½
800 MHz to 2.5 GHz
Where P is the maximum output power rating of the transmitter in
watts (W) according to the transmitter manufacturer and d is the
recommended separation distance in meters (m).
Field strengths from fixed RF transmitters, as determined by an
electromagnetic site survey
a
should be less than the compliance
level in each frequency range
b
.
Interference may occur in the vicinity of equipment marked with
following symbol:
Note 1: At 80 MHz and 800 MHz, the higher frequency range applies
Note 2: ese guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and
reflection from structures, objects and people
a. Field strengths from fixed 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 fixed RF transmitters, an electromagnetic site survey should be considered. If the measure
field strength in the location in which the Receiver is used exceeds the applicable RG compliance level above, the Receiver should
be observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary such as
reorienting or relocating the Receiver.
b. Over the frequency range 150 KHz to 80 MHz, field strengths should be less than 3 V/m.