Measuring Depth; A-Scope Display - Furuno LS-6100 Operator's Manual

Fast
Picture and picture advancement speed
1. Press the [MENU/ESC] key to open the
menu.
2. Choose PIC. ADVANCE from page 1 of
the menu.
3. Press ► to show the options window.
Stop
1/16
1/8
1/4
1/2
1/1
2/1
4/1
Picture advance options window
4. Use ▲ or ▼ to choose picture advance
speed desired. The fractions in the
options window denote the number of
scan lines produced per transmission.
For example, 1/8 means one scan line
is produced every 8 transmissions.
"Stop" freezes the display and it is
convenient for observing an echo.
5. Press the [MENU/ESC] key to close the
menu.

1.9 Measuring Depth

The VRM (Variable Range Marker)
functions to measure the depth to fish
schools, etc.
1. Press ▲ or▼ to place the VRM on the
object which you wish to measure
range.
2. Read the VRM depth just above the
VRM.
Slow
Slow
Fast
VRM
49.6
How to measure depth with the VRM

1.10 A-scope Display

This display shows echoes at each
transmission with amplitudes and tone
proportional to their intensities, on the right
1/4 of the screen. It is useful for estimating
the kind of fish school and bottom
composition.
Note: In the dual frequency display, the
A-scope display is only available with the
high frequency display.
Single frequency display
0
10
20
30
32.3
40
A-scope display
A-scope display
8
50k
1/1
0
VRM depth
20
39.8
40
60
80
50k
1/1
Weak
reflection
(fish or noise)
Strong
reflection
(fish)
Strong
reflection
(bottom)