Technical information

EQ-55 Operators Manual 950-7001001/Iss 1.2
Appendix B Glossary Page B.3
Kongsberg Simrad Mesotech Ltd.
Port Coquitlam, BC - Canada
B. APPENDIX B
B.1 GLOSSARY
A-SCOPE
A method of displaying the echo sounder information. In A-scope mode, the echoes
are displayed in a "bar-graph" format, with stronger echoes displayed not only in
the color representing their target strength, but also in a width representing
their target strength. The same information is being displayed as in other modes,
but it is displayed in a different way.
ALARM
Alarms can be set to sound a "beep" if the echo sounder detects a target above
(shallower than) a minimum alarm depth or below (deeper than) a maximum
alarm depth. The EQ 55 allows you to set the alarm depths and to enable or
disable both the minimum and maximum depth alarms.
AUTORANGE
Selecting Autorange will cause the EQ 55 to change the basic range setting(s) to
keep the displayed bottom in the lower half of the display. For instance, as your
boat moves into deeper water, the EQ 55 will automatically switch to longer
ranges, and as you move into shallower waters, the EQ 55 will automatically
switch to shorter ranges, always keeping the displayed bottom in the lower half of
the display.
BACKGROUND COLOR
Background color is the color shown on the EQ 55 in the event no target is
present. The choices of background color are blue or black. Black is especially
useful during nighttime operation when the blue background could be too bright.
COLOR THRESHOLD
Color Threshold function allows the "weaker" targets and noise which may be
shown on the display screen to be eliminated from the display. These targets are
usually shown in the weaker target colors such as blues and greens. The Color
Threshold allows you to choose not to display the blues, or the blues and
greens, etc. Doing this will leave only the stronger targets on the display screen.