Appendix A: Technical Specifications - EMC Considerations
A-7
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Recommended Separation Distances between portable and mobile RF Communications equipment and the
ClearCount SmartSponge System Model A02
Equipment and Systems that are NOT Life-supporting
The SmartSponge System contains a receiver operating at a frequency of 13.56 MHz +/- 7 kHz.
The SmartSponge System may be interfered with by other equipment, even if that other equipment complies
with CISPR EMISSION requirements. If abnormal behavior is observed, please refer to the separation distance
chart provided in this appendix.
The SmartSponge system contains a transmitter operating at a frequency of 13.56 MHz, using 10% amplitude
shift keying at a modulation frequency of 423.75 kHz, and maximum effective radiated power of 200 mW.
Recommended Separations Distances for the
SmartSponge System Model A02
The ClearCount SmartSponge System Model A02 is intended for use in the electromagnetic environment in
which radiated disturbances are controlled. The customer or user of the ClearCount SmartSponge System
Model A02 can help prevent electromagnetic interference by maintaining a minimum distance between
portable and mobile RF Communications Equipment and the ClearCount SmartSponge System Model A02
as recommended below, according to the maximum output power of the communications equipment.
Max Output Power
(Watts)
Separation (m)
150 kHz to 80MHz
D=(3.5/3)(Sqrt P)
Separation (m)
80 to 800MHz
D=(3.5/3)(Sqrt P)
Separation (m)
800MHz to 2.5GHz
D=(7/3)(Sqrt P)
0.01
.1166
.1166
.2333
0.1
.3689
.3689
.7378
1
1.1666
1.1666
2.3333
10
3.6893
3.6893
7.3786
100
11.6666
11.6666
23.3333
For transmitters rated at a maximum output power not listed above, the recommended separation distance
d
in meters (m) can be determined 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.
