The second zoom method lets you shift the zoom window bar in one-
MEDITERRANEAN SEA LORAN-C CHAIN GRI 7990
REGIONAL MANAGER COMMANDER, COASTGUARD ACTIVITIES EUROPE, LONDON,
UK
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ITALY 3531 20W1
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foot increments. Again, press the RANGE/ZOOM key, then press
the
key next to the TMZoom" label. The screen shown on the
opposite page
appears. Now press the key next to the
up arrow in the "Zoom" box.
This shifts the zoom window on the left side of the screen
up one foot.
In other words,
if the zoom is from 17 to 57
feet, pressing the
key
next
to the up arrow wilt change the zoom window to 16 to 56 feet. You'll
also see the zoom window bar move up slightly in the center of the
screens. Press the key next to the down arrow to move the zoom
window down. The bar in the center of the screen shows
you the area
that is displayed on the left side of the screen. When you have the
zoom window at the desired depth, press
the key next to the "Clear"
label to erase the menus.
ZOOM - BO1TOM TRACK
This feature zooms all echoes and tracks the bottom
signal
at the same
time. It can be used in the split screen, full screen, 2X
or 4X
modes,
and in automatic or manual.
To activate the Zoom Bottom Track function, press
the RANGE/ZOOM
key. Next, press the
key adjacent to the Bottom Track menu. This will
place the Z-9500 in the Full Screen
2X Bottom
Track mode. More
menus appear
on the left side of the screen:
4x This key changes
the zoom from
twice normal size to four times
normal size. Simply press the
key
and the
zoom
size changes
immedi-
ately.
OFF Press this key to turn the Bottom Track function off. The Z-9500
will revert to a full screen, normal mode.
2X BOTTOM TRACK
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Clear
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