Welch Allyn Spot VS100 Directions For Use Manual page 46

42 Guidance and manufacturer's declaration
The device is intended for use in the electromagnetic environment specified below. The customer or the user of the device should assure that
it is used in such an environment.
Immunity test IEC 60601 test level
Conducted RF 3 Vrms
IEC 61000-4-6 150 kHz to 80 MHz
Radiated RF 3 V/m 80 MHz to 1 GHz
IEC 61000-4-3
Surge EN 61000-4-5 Differential mode: ±1 kV
Common mode: ±2kV
Note1: At 80 MHz and 800 MHz, 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.
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 measured field strength in the location in which the
device is used exceeds the applicable RF compliance level above, the device should be observed to verify normal operation. If abnormal
performance is observed, additional measures may be necessary, such as reorienting or relocating the device.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Electromagnetic immunity
Compliance level
3 Vrms
3 V/m
Differential mode: ±1 kV
Common mode: ±2kV
Welch Allyn Spot Vision Screener
Electromagnetic environment - guidance
Portable and mobile RF communications
equipment should be used no closer to any part of
the device, including cables, than the
recommended separation distance calculated
from the equation applicable to the frequency of
the transmitter.
Recommended separation distance
P
d= (1.17) 150 kHz to 80 MHz
P
d= (1.17) 80 MHz to 800 MHz
P
d= (2.33) x 800 MHz to 2,5 GHz
where P is the maximum output power rating of
the transmitter in watts (W) andd is the
recommended separation distance in meters (m).
Field strengths from fixed RF transmitters, as
determined by an electromagnetic site survey
should be less than the compliance level in each
b
frequency range . Interference may occur in the
vicinity of equipment marked with the following
symbol:
a ,