Raymarine DSM300 - Manual (Page 20)

20 DSM300 Operation with PLUS Series Displays
You can select the Zoom or Bottom Lock image to be displayed in place of the
regular bottom graph display. Alternatively, you can set the display window to be
split vertically with the bottom graph displayed in the right hand screen and the
Zoom or Bottom Lock image displayed in the left hand screen. See Figure 2-4.
If you choose dual frequency, the scrolling bottom graph is displayed in both
frequencies, split horizontally. Zoom, Bottom Lock, or A-Scope can be displayed
with the dual frequency graph.
All of these options are available when the sonar data is displayed in a half-screen
window.
Sounder Functions
The DSM300 includes the following functions:
• Automatic or manual selection of scroll speed for bottom graph display
• Automatic or manual selection of transducer frequency
• Automatic or manual selection of depth range limits
• Automatic or manual selection of Gain, Color Gain, and STC settings
• Set up alarms for Fish, Shallow water and Deep water
• VRM marker to determine depth and distance
Operation of these functions is described in Chapter 4 and Chapter 5.
ZOOM FREQUENCY BTM.LOCK A-SCOPE
AUTO GC Z H
0
80 200kHz
50kHz
200kHz
50kHz 200kHz
50kHz
SPLIT
0
ZOOM FREQUENCY BTM.LOCK A-SCOPE
AUTO GC Z H
0
80 6.8
27.2 27.2
200kHz
50kHz
SPLIT
0
80
Split Frequency Split Frequency with A-Scope
20
40
60
20
40
60
20
40
60
20
40
ft 80
60
ft
BL