Welch Allyn 719-Serie Gebrauchsanweisung Seite 19

Directions for use
Recommended separation distances between portable and mobile RF communications
equipment and the handle and charging accessory
The handle and charging accessory is intended for use in an electromagnetic environment in which radiated RF
disturbances are controlled. The customer or user of the handle and charging accessory can help prevent
electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications
equipment (transmitters) and the handle and charging accessory as recommended below, according to the maximum
output power of the communications equipment.
Rated max. output
power of transmitter
(W)
0.01
0.1
1
10
100
For transmitters rated at a maximum output power not listed above, the recommended separation distanced in meters
(m) 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.
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.
Test specifications for enclosure port immunity to RF wireless communications equipment
Test frequency
(MHz)
385
450
710
745
780
810
Separation distance according to frequency of transmitter (m)
150 kHz to 80 MHz 150 kHz to 80 MHz in
outside ISM bands ISM bands
0.12 0.20
0.37 0.63
1.17 2.00
3.69 6.32
11.67 20.00
a a
Band Service
MHz
380 - 390 TETRA 400
430 - 470 GMRS 460,
FRS 460
704 - 787 LTE band 13, 17 Pulse modulation
800 - 960 GSM 800/900,
TETRA 800,
80 MHz to 800 MHz
0.12
0.38
1.20
3.79
12.00
Maximum power
b
Modulation
(W)
b 1.8
Pulse modulation
18 Hz
2
c
FM ±5 kHz
deviation
1 kHz sine
0.2
b
217 Hz
2
b
Pulse modulation
A - English 13
800 MHz to 2.7 GHz
0.23
0.73
2.30
7.27
23.00
Distance (m) Immunity
test level (V/
m)
0.3 27
0.3 28
0.3 9
0.3 28