34
Table 5. Guidance and manufacturer's declaration - electromagnetic immunity (conducted RF
and radiated RF)
Test
IEC 60601
Test Level
20
Immunity
Compliance Level
Electromagnetic Environment -
Guidance
21
**Over the frequency range of 150 kHz to 80 MHz, field strengths should be less than [V
1
]V/m.
NOTE: The Merlin PCS is intended for use in an electromagnetic environment in which
radiated RF disturbances are controlled. The user of the Merlin PCS can help prevent
electromagnetic interference by maintaining a minimum distance between portable and
mobile RF communications equipment (transmitters) and the Merlin PCS as
recommended in the table below, according to the maximum output power of the
communications equipment. For transmitters rated at a maximum output power not
listed in the table below, the recommended separation distance (
d
) in meters 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.
Table 6. Recommended separation distances between portable and mobile communications
equipment and the Merlin™ PCS
Rated maximum
output power of
transmitter (W)
Recommended separation distance according to frequency of
transmitter (m)
24
150 kHz to 80 MHz
80 MHz to 800
MHz
25
800 MHz to 2.7 GHz
0.01
0.12
0.12
0.23
0.1
0.38
0.38
0.73
1.0
1.2
1.2
2.3
10.0
3.8
3.8
7.3
100.0
12
12
23
RF Operating Frequencies
Nearby or hidden equipment emitting strong magnetic fields, such as Radio-Frequency
Identification (RFID) emitters, other medical and radio devices, etc., can interfere with the
Merlin™ PCS inductive and RF communication, even if the other equipment complies with
applicable emission requirements. If interference occurs, you can minimize its effect by
reorienting or relocating the Merlin PCS or by shielding its location.
The operating characteristics of the Merlin PCS and its accessories are as follows:
Inductive Telemetry Wand
RF Transmission – Carrier frequency below 100 kHz (inductive telemetry).
24
These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from
structures, objects, and people.
25
At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
