Doppler
LOGIQ 500 Basic Users Manual
2233658–100 Rev. 0
5–52
Controls
M/D Cursor
Audio Volume
Description
Assigns trackball control to the
B-Mode Doppler cursor. It also
displays and erases the theta angle
correction cursor.
Controls Doppler audio output.
NOTE: The system automatically unwraps
aliased audio.
Accessing/
Changing
Pressing PD will automatically
assign trackball control to the
B-Mode Doppler cursor.
To terminate trackball control of the
M/D cursor, press SET.
To reactivate trackball control of the
Doppler cursor, press M/D Cursor.
Pressing PD automatically activates Doppler
Audio.
The volume is initially set to the Audio Volume %
chosen in the Set Up/Custom Display page 14.
Doppler audio sounds
change rapidly, often
abruptly. Increase the
CAUTION
,
NOTE: Pressing the M/D Cursor
key while the trackball is actively
controlling the B-Mode Doppler
cursor will display the theta angle
correction cursor. (Refer to Theta
Angle Correction on 5–53 for more
information.)
y
volume in small steps to
avoid startling the patient.
Benefits
Allows for repositioning of the
Doppler cursors after the trackball
has been assigned a different
function.
An audio representation of the flow within a
vessel can be used before activating the
spectral trace or CWD.
Values
On or Off.
The Doppler cursor displays in the
center of the screen or changes to
the active color if already present.
The volume increases/decreases logarithmically,
with positive flow through the right channel and
negative flow through the left channel.
Affects on
Other Controls
Terminates trackball control from its
current function and assigns it to the
Doppler cursor.
When angle correction is active, the
M/D cursor returns angle correction
to zero degrees.
