13 water temperature graph – Furuno NAVNET 1823C User Manual
Page 171
4. VIDEO SOUNDER OPERATION
4-25
Alarm messages
The table below shows the sounder alarm messages and their meanings.
Sounder alarm messages and their meanings
Message Meaning
DEPTH ALARM!
Bottom alarm violated.
FISH ALARM!
Fish alarm violated.
TEMPERATURE ALARM!
Water temperature alarm violated.
4.13 Water Temperature Graph
The water temperature graph (appropriate sensor required) plots water
temperature on the sounder display. (See the figure on page 4-3.) It can be
turned on or off as below.
1. Press the [MENU] key to open the menu.
2. Press the SOUNDER MENU soft key.
3. Select TEMPERATURE GRAPH and press the EDIT soft key.
4. Select OFF (default setting) or ON as appropriate.
5. Press the ENTER soft key.
6. Press the [MENU] key to close the menu.
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