11
EN
KEELER K-LED II
9.3 RECOMMENDED SAFE DISTANCES
Recommended separation distances between portable and mobile RF communications
equipment and the Keeler Spectra Iris/K-LED
The Keeler Spectra Iris/K-LED are intended for use in an electromagnetic environment in
which radiated RF disturbances are controlled. The customer or the user of the Keeler Spectra
Iris/K-LED can help prevent electromagnetic interference by maintaining a minimum distance
between portable and mobile RF communications equipment (transmitters) and the Keeler
Spectra Iris/K-LED as recommended below, according to the maximum output power of the
communications equipment.
Rated maximum output
power of transmitter (W)
Separation distance according to frequency of
transmitter (m)
150 kHz to 230MHz
d = 1.2√ p
80MHz to 800MHz
d = 1.2√ p
800MHz to 2.7GHz
d = 2.3√ p
0.01
0.12
0.12
0.23
0.1
0.38
0.38
0.73
1
1.2
1.2
2.3
10
3.8
3.8
7.3
100
12
12
23
For transmitters rated at a maximum output power not listed above, the recommended
separation distance d in metres (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 80MHz and 800MHz, 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.
9.4 TECHNICAL SPECIFICATIONS
Power Supply
Input mains data:
100-240V – 50/60Hz
700mA
Power supply rating:
12V : 2.5amps
Operation:
Continuous
Classification:
Class II equipment
Type B applied part
Working distance:
340-500mm
