Q9 Digital Color Doppler Ultrasound System
60
SK3
（
rotate
）
PRF
Adjust PRF value
The maximum PRF value depends on
the probe and the position of sampling
gate.
SK4
（
rotate
）
Speed
Adjust scanning speed
1
，
2
，
3 adjustable. Adjust
clockwise, the numerical increase and
adjust anticlockwise, the numerical
decrease. Adjust range: 1
SK5
（
rotate
）
Baseline
Adjust the baseline
position
0~6 adjustable.
Other adjustments
：
1
、
PRF
Hold faster or slower blood flow through rate adjustment. PRF toggle key is for adjusting the value of PRF
and the maximum PRF value depends on the probe and the position of sampling gate.
2
、
Sampling line
In PW mode, move the trackball left and right to adjust the position of sampling line
3
、
Gain
Rotate PW knob and adjust gain of CWD mode when CW light is on. Gain will be increased if rotate
clockwise
；
Gain will be decreased if rotate anti-clockwise. Adjustable range is from 0 to 255.
4.3.24.
ECG
The ECG module is a device that provides the 3 lead ECG signal acquisition for cardiac application. It is not
intent for the ECG diagnostic purpose as in the 12-lead module. In the cardiac application, the ECG trace is
displayed on the bottom of the screen. For echo-stress, the R-wave triggering is used to gate or synchronize the
image acquisition.
The ECG has 3 leads: LL(left leg, RED), LA(left arm, BLACK), RA(right arm, WHITE).
LA is for reference, which usually provides a bias voltage from the ECG module, and the LL, LA are the two
signals from the body and going to the differential input of the ECG isolation amplifier.
The ECG control is in the soft-menu available for the cardiac probe, it allows the user to set up the following
control:
ECG ON/OFF: turn on/off the ECG trace
ECG Invert: turn on/off the ECG invert
ECG GAIN: increase or decrease the ECG gain
ECG POS: set the ECG trace position
ECG Velocity: set the ECG Velocity