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 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.
Overall sensitivity (3.0 MHz Probe)
Temperature: 24.9
℃
, Relative Humidity: 68
％
Distance for the probe face
50mm
Nominal acoustic working frequency
3.0MHz
Doppler frequency
293Hz
Target Velocity
12cm/s
A(d): Target reflection loss
44.5dB
B: two-way attenuation over the acoustic
pathway
52.3dB
C: Signal-to-noise Ratio
Vs: 235mV
Vn: 113mB
C=20log(Vs/Vn)=6.4dB
S: Overall Sensitivity
S=A+B+C=103.2db
Supplementary information: --
Distance for the probe face
75mm
Nominal acoustic working frequency
3.0MHz
Doppler frequency
293Hz
Target Velocity
12cm/s
A(d): Target reflection loss
44.5dB
B: two-way attenuation over the acoustic
pathway
47.2dB
C: Signal-to-noise Ratio
Vs: 229mV
Vn: 110mB
