
Full Digital Ultrasonic Diagnostic Instruments
User’s Manual V1.00
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2. Press freeze key to freeze or unfreeze the current image;
3. In real-time M mode, press
or
or
or
key to exit M mode.
7.6 Image quality adjustment and image control
7.6.1 Image brightness adjustment
Proper brightness of the LCD is essential for a quality image. The brightness adjustment should
be done in relation to the ambient brightness. Therefore the actual brightness shall be adjusted
according to the specific environmental condition.
Method of operation:
1. Press keys
, the “LCD Settings” adjustment box appear on the screen;
2. Press direction keys
to change the brightness of LCD;
3. Finish the settings, press
key to exit the “LCD Settings” adjustment box.
Tip: In general, the brightness adjustment is performed according to the gray scale. It
should be adjusted in such that the background appears dark while all the gray scale
strips can be seen.
7.6.2 TGC adjustment
In real-time mode, move TGC adjustment key to realize the image control.
7.6.3 Total gain adjustment
Clockwise rotate
『
Gain
』
knob on the panel to increase the total gain value, and counterclockwise
to decrease the value. Adjust the total gain knob can control the total gain of the image until the image
quality is satisfied. The total gain value is shown on “GN” position on the right of the image area.
Note: If the total gain is adjusted to the biggest but still can’t be satisfied, you can adjust TGC to
compensate when connect to the high frequency probe.
7.6.4 Dynamic range adjustment
1. In real- time mode, move the cursor to the submenu
〖
Dynamic
〗
of
【
B Mode Menu
】
;
2. Press
『
Set
』
or
『
Back
』
key to realize the change of dynamic range. The dynamic range value
is shown on “Dyn” position on the right of the image area.
7.6.5 Frequency adjustment (Frequency conversion)
In real-time mode, press
key to change the frequency. The frequency value is displayed on
the “Freq” position on the right of the image area.
7.6.6 Frame correlation adjustment
A. Shortcut key adjust the frame correlation
In real-time mode, press
key to realize four levels of the frame correlation. The frame
correlation is displayed in the
〖
Frame Avg
〗
of the left menu.
B. Adjust the frame correlation by the menu
1. In real-time mode, move the cursor to the submenu
〖
Frame Avg
〗
of
【
B Mode Menu
】
;
2. Press
『
Set
』
or
『
Back
』
key to realize four levels of the frame correlation. Four kinds of frame
correlation are 0, 1, 2, 3 and displayed in the
〖
Frame Avg
〗
of left menu.
7.6.7 Edge enhancement adjustment
1. In real-time mode, move the cursor to the submenu
〖
Edge
〗
of
【
B Mode Menu
】
;
2. Press
『
Set
』
or
『
Back
』
key to realize image sharpening. A sharpened picture can better highlight
the organ outline for convenient observation. Four kinds of edge enhancement are 0, 1, 2, 3
and displayed in the
〖
Edge
〗
of left menu.
7.6. 8 Compression curve adjustment
1. In real-time or frozen mode, move the cursor to the submenu
〖
Comp Curve
〗
of
【
B Mode