Quick Start 23
LOGIQ
t
400 Quick Start Guide
2237879–100 Rev. 0
Doppler Controls (cont’d)
Several controls affect the B-Mode portion of the display and not the echoes in the Doppler spectrum. These are TGC,
Depth, B/M Gain, Scan Area and Reverse keys. See
Quick Start 12 for comments on these controls.
The keyboard controls that affect Doppler are as follows:
1.
M/D Cursor—Assigns trackball control to the Doppler cursor.
2.
Audio Volume—Used to adjust Doppler audio volume output.
To increase/decrease, turn the control clockwise/
counterclockwise.
3.
Doppler Spectral Gain—Adjusts overall received echo gain for
Doppler. To increase/decrease, turn the control clockwise/
counterclockwise.
4.
Theta Angle Correction—Adjusts angle correction for flow
velocity calculation. To adjust the angle clockwise/
counterclockwise relative to the probe face, turn the control
clockwise/counterclockwise.
5.
CFM/Spectrum Invert—Inverts Doppler spectrum assignments.
6.
Velocity Scale—Adjusts velocity scale to accommodate faster/slower blood flow velocities. To increase/decrease,
press the Velocity Scale up/down arrow key.
7.
Baseline Shift—Minimize aliasing by assigning more of the overall displayed velocity scale to forward or reverse flow.
To shift the baseline up/down, press the Baseline Shift up/down arrow key.
8.
B Pause—Freezes the B-Mode image while keeping the Doppler spectrum display active. Press to view CW Doppler.
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Summary of Contents for LOGIQ 400
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