Functional checks
LOGIQ V3/V5/V5 Expert – Basic Service Manual 4-35
5726264-100 English Rev.8
4-3-23 Adjust the PW Doppler Mode controls
Adjust the Active mode gain to set the gain in the spectral
Doppler area.
• Adjust Wall Filter to reduce unwanted low velocity blood
flow and tissue movement.
In PW mode, adjust Sample volume to low setting for better
resolution, or higher setting to more easily locate the
disturbed flows.
Adjust the Compression setting to balance the effect of
stronger and weaker echoes and obtain the desired intensity
display.
Adjust Frequency to optimize flow display. Higher setting
will improve resolution and the lower setting will increase the
depth penetration.
Adjust Frame rate to a higher setting to improve motion
detection, or to a lower setting to improve resolution.
NOTE: Frequency and Frame rate settings may affect the Low
Velocity Reject.
Adjust Power Output to obtain an acceptable image using
the lowest setting possible. This is particularly important in
CW mode, as the energy duty cycle is 100% (constant).
NOTE: The Doppler Power setting affects only Doppler operating
modes.
Adjust the following settings to further optimize the display
of the image.
Use the Sweep Speed to optimize the sweep speed.
To view signal detail, adjust Scale to enlarge the vertical
spectral Doppler trace.
Use Invert to reverse the vertical component of the spectral
Doppler area of the display.
Use Angle Correct to steer the ultrasound beam to the
blood flow to be measured.
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