D
IRECTION
5771498-100, R
EVISION
6
V
ENUE
™ S
ERVICE
M
ANUAL
Chapter 4 - General Procedures and Functional Checks
4-19
P R E L I M I N A R Y
•
Use
Quick angle
and
Angle correction
to steer the ultrasound beam to the blood flow to be
measured (Not typically required during cardiac studies).
•
Adjust
LPRF
(PW Doppler mode only) to toggle between high and low Pulse Repetition Frequency
(PRF). When the Doppler PRF is raised beyond a certain limit, more than one Doppler gate is
displayed on the screen.
•
Press
Auto
on the Control panel to activate Automatic Spectrum Optimization (ASO). ASO is used
to automatically adjust baseline and scale of the PW/CW spectrum to optimize the spectral display.
It will avoid the display of a folded spectrum and stretch the spectrum vertically as large as possible.
ASO optimization is not continuous but performed instantaneously each time
Auto
is pressed.
Summary of Contents for H45051VN
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