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А1020 MIRA Lite Low-Frequency Ultrasonic Tomograph
Operation Manual
19
ACOUSTIC
CONTROL
SYSTEMS
Parameter
Value
Description
Color gain, dB
from 0 to 60 in increments of 1
Changes the brightness scale for the synthesized image
Analog gain, dB
from 0 to 100 in increments of 1
Selects the gain coefficient in the path of the device to pro-
vide maximum dynamic range without the signal limitation
Filter, kHz
10 / 20 / 40 /100
Sets the high-frequency filter
Parameter
Value
Description
Number of periods
from 0.5 to 2.0 in increments of 0.5
Is selected depending on the material properties
Pause between the
emission pulses, ms
Off / from 0.2 to 20.0 in incre-
ments of 0.2
It affects reverberation to eliminate after-sound
Operating frequency,
kHz
from 10 to 100 in increments of 5
Is selected depending on the material properties
SH-Wave compen-
sation
On / Off
Switching On/Off the surface wave
Using the measured
velocity
On / Off
Selects the velocity for formation of SAFT.
On – measured velocity of transversal waves
Off – velocity value set in the SETUP mode
Velocity, m/s
from 1,000 to 10,000 in incre-
ments of 1
Manual velocity adjustment. Parameter is not active when
the parameter “Using the measured velocity” is On
2D-Filter
On / Off
Switching On/Off the 2D-Filter
Image quality
Low / Medium / High
Selects the quality of the image received. Determines the
data acquisition rate and data size when saving them.
А-Scan type
Off / Filling / Contour
Switches off field mapping of the А-Scan on the
screen / Switches between the display types of А-Scan
Table 4