Aloka ProSound Alpha 10, Service Manual, Page: 40 / 405

MN2-2008, Rev.2
SECTION 4 Principle of System Operation
4 - 7
DIU
Image Gradation B/W: 8bit, 256 steps
Velocity: 8bit, ±127 steps
Variance: 4bit, 16 steps
Power Flow: 7bit, 128 steps
Displayable Scanning Lines Max 1024 lines
Display Memory B/W: 1024 × 512 × 8 bit × 2 planes
Velocity/Power: 1024 × 512 × 8 bit × 2 planes
Variance: 1024 × 512 × 4 bit × 2 planes
Cine Memory B/W: 512 × 65536 × 8 bit
Ver.3~ 512 × 524288 × 8 bit
Ver.3~ 512 × 1048576 × 8 bit (In Stress scanning)
Velocity/Power: 512 × 65536 × 8 bit
Ver.3~ 512 × 524288 × 8 bit
Variance: 512 × 65536 × 4 bit
Ver.3~ 512 × 524288 × 8 bit
Property: 512 × 65536 × 4 bit
Graphic: 16 × 458752 × 16 bit
Ver.3~ 16 × 1835008 × 16 bit
Image Display Synchronization Method
Ultrasound frame sync.
Ping Pong system
ON/OFF selectable
Cine Memory Function
Search/Loop Max. 512 (Ver.3~: Max. 4096) frames
(with 120 scanning lines)
Playable simultaneous loop/in-loop on 2B and 4B images
Possible store/review to the media from cine memory
2B mapping
Possible to divide cine memory into 4 on 2B mode
Real-time storing (Ver.6~)
Possible to keep the data on the cine memory by manual
flash for CHE mode (Ver.7~)
Video Clip Auto Stop function (Ver.7~)
Scroll Max. 256 (Ver.3~: Max. 3584) Screens
(with 512 Pixels per screen)
Image Display Functions
B/* mode Up/Down Left-Right Display Possible
B mode Image Zoom Write Zoom possible
Read Zoom possible
(During Freeze × 16, Max.)
Position Movement Yes
Left-Right/Up-Down Inversion Yes
90° Rotation Display Yes
M mode image Window Display Yes
Echo Erase
Yes
Request Function (Display mode change after Freeze)
Yes
Steered Beam Yes (Possible to configure on B-mode
and Flow-mode individually)
FAM (Free angular M-mode) Possible on both B/W and color image (Possible on
frozen image)
Possible on B/M upper/lower display