5-26 Image Optimization 
Dynamic Range 
Description  The dynamic range conveys the information which is being transformed 
from echo intensity to grayscale. 
Operations  Adjust using the [Dyn. Ra.] item on the touch screen. 
The adjusting range is 24-72dB. 
Effects  The more the dynamic range, the more specific the information and the 
lower the contrast with more noise. 
 
Audio 
Description  This function is used to adjust the output audio in the spectrum map. 
Operations  Rotate the <Volume> knob on the left of the touch panel to adjust the 
volume. 
Press the <Volume> knob to open or shut down the volume. 
The adjusting range of the audio is 0-100%. 
Effects  Utilizing the output audio helps to identify the feature and the status of 
flow. 
 
Steer 
Description  This function is used to adjust the angles for the sampling line. 
Operations  Use the <Angle/Steer> key on the control panel to switch to “Steer 
adjustment”. Tap [Steer] on the touch screen to adjust. The adjusting 
range is -12 to 12. 
Effects  This feature is used to steer the direction of the beam so as to change the 
angle between the beam and flow direction with immobility of the linear 
probe. 
The values of steer angles vary according to the probe. 
Impacts  The PW Steer function is available only for linear probes.