13
Adjusting the Manual Zoom
To adjust the manual “zoom zone”, exit the menu and then use
the RANGE + and RANGE — keys for the left beam on the front
panel. You will notice a green bar on the right side of the right
beam moves as you make adjustments. Align the green bar with
the area you want to magnify. This indicates the area that will
appear zoomed on the left side of the display.
ZOOM-RATE
The zoom rate determines the amount of magnification. You have
magnification choices of x2, x4, and x8. For flatter bottoms, you
can choose x8. For greatly undulating bottoms, use x2.
To change the zoom rate press...
MENU --> MENU --> MENU --> --> -->
then or .
HARD-BTM-LEVEL
This setting turns on and off the hard bottom level indicator and
graph. When activated, a pink colored graphical display is added
below the right beam, or entire beam in full screen mode. In addi-
tion, a large pink digital number is also added in the upper left
corner of the display. The number will vary from 0 to 20, depend-
ing on the hardness of the bottom. The graph will show changes
over time and corresponds to the bottom display. This allows you
to easily see where the bottom content changes.
To activate or disable Hard Bottom Level press...
MENU --> MENU --> MENU --> --> --> -->
then or .
COMPOSITE
Composite mode places the 107 kHz beam and the 400 kHz beam
on top of each other. Objects that are only visible with the 107
kHz beam are represented by a gray scale color scheme. Objects
only visible with the 400 kHz beam are represented by a green
color. Objects visible with both beams are colored red. In order
to activate the Composite mode, you must first be in split screen
mode.
To activate or disable Composite mode press...
MENU --> MENU --> MENU --> --> -->
then or .
TEMP-ALARM
The temperature alarm gives you the ability to sound an audible
alarm when the water surface temperature falls within a speci-
fied zone or outside a specified zone.
To enter the Temp Alarm sub-menu press...
MENU --> MENU --> MENU --> -->
then .
To activate the alarm press once for the “In-Range” alarm
and twice for the “Out-Range” alarm.
To turn the Temperature Alarm off, press repeatedly until
OFF is displayed.
To adjust TEMP-SET-1 (the lower temp value) press
then or to adjust the value.
To adjust TEMP-SET-2 (the upper temp value) press -->
then or to adjust the value.
Press the MENU key to exit the Temp Alarm sub-menu.
