Service manual

GE MEDICAL SYSTEMS
D
IRECTION 2300749-100, REVISION 2LOGIQ
TM
3 SERVICE MANUAL
Chapter 4 4-19
4-4-4-2 Color Flow Mode OP Panel Controls
4-4-4-3 Color Flow Mode Top and Sub Menu Controls
Table 4-8 Color Flow Mode OP Panel Controls
Step Task Expected Result(s)
1
Press CFM-Mode key CFM Mode Starts
2
Adjust Gain
Amplifies the overall strength of the echoes processed in the Color Flow window. Turn the Gain dial
(CFM Mode key) to the left/right to increase/decrease Gain.
Table 4-9 Color Flow Mode Top and Sub Menu Controls
Step Task Expected Result(s)
1
Threshold
Assigns the gray scale level at which color information stops. Rotate Threshold Knob left/right to
increase/decrease the gray scale threshold.
2
Packet Size
Controls the number of samples gathered for a single color flow vector. Rotate Packet Size left/right to
increase/decrease the packet size.
3
Color maps Selects a specific color map. Rotate Color Map left/right to cycle through available maps.
4
Frequency
Enables the adjustment of the probe’s operating frequency. Press Frequency and select desired value.
The selected frequency is displayed in the status window.
5
Set Frame Average
Averages color frames. Rotate Frame Average left/right to smooth temporal averaging. The selected
value displays on the Top and Sub Menu.
6
Color Invert Views blood flow from a different perspective. Press Invert to reverse the color map.
7
Virtual Convex
The Region of Interest gets enlarged, covering more image area. This is available only in Linear
Probes.
8
Spatial Filter Activates Spatial Filter
9
Dynamic Range
Enables control of the dynamic range or contrast of the image. When dynamic range is set high, the
image is softer and more low-level data is visible. Turn Dynamic Range rotation knob left/right to
increase/decrease the value.
10
ACE Eliminates the motion artifacts. Press Ace on the Sub Menu to activate.
11
Angle Steer
Slant the Color Flow linear image left or right to get more information without moving probes. Click
Angle Steer to the left/right to slant the linear image.
12
Baseline
Changes the spectrum baseline to accommodate higher velocity blood flow. Rotate Baseline left/right
to adjust the baseline.
13
PRF / Wall Filter
Velocity scale determines pulse repetition frequency. If the sample volume gate range exceeds single
gate PRF capability, the system automatically switches to high PRF mode indicated by Multiple gates.
14
Transparency Map Activates Transparency Map.