BATCAM 2.0
26
III.
Beam Forming Setting
The Beam forming setting sets the various values of beam power that show the characteristics of the
measured noise in rainbow-shaped color scheme, including the display reference, image range, and image
average setting. The beam power visually shows the amount of sound pressure produced in the direction
of measurement of the ultrasonic camera. The beam power displayed on the screen can show both the size
and distribution of the noise generated, but it usually depends on the display reference setting value. Also,
the beam power, calculated as 25 frames per second, will be visible on the screen at a resolution of 640 x
480.
1)
Threshold(Display Reference Value)
The beam power that appears on the screen depends on the set display threshold. This means that the noise
you are trying to measure must be greater than or equal to the Threshold before the beam power appears
on the screen. Conversely, if the noise is less than the set display threshold, beam power will not be
displayed on the screen. For accurate measurements, it is recommended that you set the Threshold before
measurements, depending on your measurement environment. The display reference value can be set from a
minimum of 0 dB to a maximum of 120 dB, depending on the nature of the noise you want to measure and
the measurement environment.
The Threshold setting is set as the minimum value of the noise source you want to measure, and only above
the set value is displayed on the screen. Values below the setting are not displayed on the screen. The range
of images is expressed in color for the noise source being measured, as shown in the graph above, with the
minimum and maximum values being expressed in the image portion as values greater than the threshold
value. The color scheme shown on the screen represents the level of sound pressure from maximum(Red) to
minimum (blue).
2)
Image Range
This function sets the range of the minimum(Blue) and maximum(Red) values displayed on the screen. This
means that you can adjust the width of the beam power displayed. A minimum of 0 to 10 dB can be set,
and the higher the value, the greater the width of the beam power.
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