Section 4
B-Scan Operation and Use
4
- 3
The operation of B-scan mode is controlled with
the following soft key buttons and menus. On-
screen directions appear, where needed, for
when each soft-key is pressed
.
Table 4-1
Soft Key Functions
KEY
FUNCTION
PATIENT
Switch to Patient screen for
Patient information entry.
EYE
Change selection of eye
examined (OD / OS)
DIR
Directional marker for probe
orientation.
USER
Switch to User Data screen
MENU
Turn menu display on/off
PROCESS
Select processing function (LOG
/ LIN / S-CURVE)
ZOOM
Adjust image zoom factor (0.5 to
2.0 magnification)
FREEZE
Start/stop scanning
A-VECTOR
Adjust position of A-cursor (only
in B/a or A/b modes)
Table 4-2
Menu Functions
MENU
FUNCTION
MODE
Select scanning mode: B-only,
B/a or A/b
MEASURE
Display Measurement menu:
Distance or Area measurements
ENHANCE
Display image Enhance menu.
REJECT
Adjust which signal levels to view
or reject.
COLOR MAP
Select grayscale or colorized
display maps
RESOLUTION
High resolution of 256 lines
(50mm. scan depth) -or-
Low resolution or 128 lines
(60mm. scan depth)
BRIGHT
Adjust brightness of display
backlight.
ANNOTATE
Display list of words & phrases to
annotate the image
ARCHIVE
Transfer the current image and
settings to a computer for storage
MAIN
Return to Main starting screen
PRINTING
Printing of any screen is performed by pressing
the Print button on the video printer. The image
which appears on the display at the time the
print button is pressed will be printed exactly as
it appears on the display. The user should read
the instruction manual which is included with
the particular video printer supplied with the
system.
4.5
B-SCAN OPERATING CONTROLS
