Table of Contents
Advertisement
Appendix A-4
CE33 Glossary of terms
targets on the display screen.
Depths – DK = Depth below keel, DS = Depth below surface, DT = Depth
below transducer.
Echogram background color – is the color shown on the CE33 in the event
no target is present. There are three colors to choose from, white, blue or
black, where black is especially useful during nighttime operation when the
white background could appear too bright.
Echosounder frequency – 50 kHz or 200 kHz can be selected to suit the
task. 200 kHz is for general purpose and offers optimum discrimination and a
narrow transmitter beam. 50 kHz is for searching in a wider area, determining
bottom conditions and going the deepest.
Event marker – allows the user to set a vertical marker on the screen at the
current ping to indicate a school of fish, etc.
Expansion (zoom) – this function allows you to take a closer look at a par-
ticular section of the water underneath your boat. You can expand the view
near the bottom (Bottom expansion) or near the Variable Range Marker (VRM
expansion). The amount of expansion can be adjusted in "Expansion window",
Presentation setup.
Gain – is another way of saying "sensitivity", or possibly "volume". Increas-
ing the gain setting of the CE33 will allow you to see smaller and deeper
targets. If the gain is set too high, however, you will begin to see "noise" and
unwanted targets. Generally speaking, you want to set the gain control just
below the point that you begin to see speckles of "noise" between surface and
the bottom on the screen.
Ping to ping filter – can be set to either on or off. With the filter "off", then
each received echo will be reflected on the screen. Whereas with the filter
"ON", the system will compare every two echoes received and only reflect on
the screen what is received from both echoes, which will give a more unclut-
tered and precise recording.
Pulse length – the transmitted pulse length can be set to OFF for observing
noise in the water (Auto range will switch to manual mode). Set to AUTO, the
optimum setting will be applied according to the water depth. Or it can be set
manually, if a specific pulse length is required - see next page:
Hide quick links:
Advertisement
Table of Contents
