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3–5
A-scope
This display shows echoes at each transmission with amplitudes
and tones proportional to their intensities, on the right 1/3 of the
screen. It is useful for estimating the kind of fish school and sea-
bed composition.
200k
160
0
50
100
150
200
68.3
CSE 180.0° SPD 16.8kt
DEP 113.6 ft TMP 16.0 °C
2D
12.0V
POS 34° 26.245' N 135° 41.232' E
Normal
display
A-scope
display
Figure 3-7 A-scope display
How to select video sounder displays
1) Press the [SNDR] key. The following displays appears.
Normal
Marker Zoom
Bottom Zoom
Bottom Lock
A-Scope
50kHz 200kHz
SELECT SOUNDER MODE
SNDR:Sel ESC:Close
Figure 3-8 Video sounder display selection screen
2) Press the [SNDR] key again (or [▼]/[▲]) to select sounder
display mode.
3) Press the [t] or [s] key to select operating frequency.
4) Press the [MENU ESC] key.