activated. You will notice that the letter Z appears in the lower right hand
corner of the display, indicating that the Zoom is on. You will also notice that
the entire screen has been changed to show an expanded view of the area from
the tip of the Zoom Range to the bottom of the Zoom Range. The LCR3000’s
Total Screen Update feature allows you to zoom in on an area even after you
have passed over it. Figure 15 show two screen, one with Zoom off and one
after turning Zoom on.
The Zoom may be activated at any time (during normal transmitting and
receiving or stop action), but while learning to use the Zoom feature you might
find it easiest to first press the Stop/Resume button to freeze the display. Now
you can position the Zoom Range, activate to Zoom, and study the display. By
pressing Zoom On/Off button again you can go back to the un-expanded or
normal display. Going back and forth several times will help you in
understanding exactly what you are seeing with the Zoom activated.
Some Additional Things You Should Know About Zoom
A. While the Zoom is turned on you can move the Zoom Range up and down.
This will allow you to search or look at an entire are in fine detail.
B. The Zoom Range indication at the right of the display can be used for depth reference. For
example in Figure 15 the Zoom Range is set between 33 feet and 48 feet. This means that
when the Zoom is activated that you are looking at an expanded view of the area from 33
feet to 48 feet.
C. While the Zoom is turned on, you cannot change Sensitivity, Depth, Scale, or Display
Speed. If you press any of these buttons while Zoom is on, a chirping wound will occur
indicating an incorrect entry.
D. If you want to zoom in along the bottom while the bottom depth is changing, you can easily
maintain the position on the bottom by pressing the set and up (upper arrow sign) or down
(lower arrow sign) buttons.
E. Using the Zoom you can actually have a 0 to 15 foot scale on your LCR3000. To do this
first position the Zoom Range as far up as it will go on the 0 to 30 ft. scale. Now turn on
Zoom. The full screen is now a 0 to 15 foot scale.
F. Remember that because of the LCR3000’s Total Screen Update feature, the information
from 0 to 480 feet is always being recorded in memory. This means that even while you
are using Zoom, no information is being lost. You can turn Zoom off, go to any depth scale
and see all the information just as if you had been on that depth scale all along.
9. Display Speed: The LCR3000 has a total of eight display speeds. When
the unit is turned on the display will be advancing at a medium speed. To
increase the display speed, depress the Speed Set and (upper arrow sign)
or hold it down to change rapidly. An audible sound is heard each time the
speed is advanced. When the limit has been reached a chirping sound will
be heard. At this point the speed will be advancing at its maximum. To
decrease the speed, simply depress the Speed Set and (lower arrow sign)
until the desired advance is reached.
10. Digital bottom reading: The digital bottom depth is displayed in the lower
left area of the screen. This digital reading will operate in depths of 4 feet or more
while the unit is in the automatic mode, on any depth scale or with zoom activated.
The digital bottom reading will not be seen while in the manual mode.
Some additional thins you should know about the LCR3000:
•
Some polarized glasses might affect your view of the LCR display. It could result in
a prism or rainbow effect. This condition can possibly be improved by a slight
adjustment in tilt.
•
If you get confused
while in the manual mode, for instance, if you don’t know where
the bottom is, then press the auto on/off button to turn on the automatic mode. The
LCR3000 will find the bottom by selecting the proper sensitivity level and depth
scale. You can then go back to the manual mode if desire.
