Product Info
Information for Prescribers
WaveWriter Alpha™ & WaveWriter Alpha™ Prime Systems Information for Prescribers
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NOTE These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and
reection from structures, objects and people.
a Field strengths from xed 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 xed RF transmitters, an electromagnetic site
survey should be considered. If the measured eld strength in the location in which the WaveWriter Alpha or
WaveWriter Alpha Prime System is used exceeds the applicable RF compliance level above, the WaveWriter
Alpha or WaveWriter Alpha Prime System should be observed to verify normal operation. If abnormal performance
is observed, additional measures may be necessary, such as re-orienting or relocating the WaveWriter Alpha or
WaveWriter Alpha Prime System.
Immunity Testing - RFID Readers
The external electrical components of the WaveWriter Alpha and WaveWriter Alpha Prime Systems have been tested
for immunity to interference from RFID readers per the following specications.
RFID Spec Per AIM 7351731 Frequency Test Level (RMS)
ISO 14223 134.2 kHz 65 A/m
ISO/IEC 14443-3 (Type A) 13.56 MHz 7.5 A/m
ISO/IEC 14443-4 (Type B) 13.56 MHz 7.5 A/m
ISOAEC 15693 (ISO 18000-3 Mode 1) 13.56 MHz 5 A/m
ISO 18000-3 Mode 3 13.56 MHz 12 A/m
ISO/IEC 18000-7 433 MHz 3 V/m
ISO/IEC 18000-63 Type C
a
860-960 MHz 54 V/m
ISO/IEC 18000-4 Mode 1 2.45 GHz 54 V/m
Manufacturer’s declaration for proximity elds
The WaveWriter Alpha and WaveWriter Alpha Prime SCS Systems are intended for use in an electromagnetic
environment in which radiated RF disturbances are controlled. The users of the WaveWriter Alpha or WaveWriter
Alpha Prime SCS System can help prevent electromagnetic interference by maintaining a minimum distance
between portable and mobile RF communications equipment (transmitters) and the WaveWriter Alpha or WaveWriter
Alpha Prime SCS System as recommended below, according to the maximum output power of the communications
equipment.
Proximity Test IEC 60601-1-2 Test Level Compliance
Level
Electromagnetic Environment Guide
IEC 61000-4-3 385 MHz: 27 V/m @ 18 Hz pulse
modulation
27 V/m Recommended separation distance
d = 30 cm
450 MHz: 28 V/m @ FM modulation 28 V/m
710 MHz, 745 MHz, 780 MHz: 9 V/m
@ 217 Hz pulse modulation
9 V/m
1720 MHz, 1845 MHz, 1970 MHz: 28
V/m @ 217 Hz pulse modulation
28 V/m