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4. VIDEO SOUNDER OPERATION
4-19
4.12 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.
4.13 Changing Pulse Repetition Rate
Pulse repetition rate can be changed. Normally, the highest rate (20) is used. When in
shallow waters, second reflection echoes may appear between surface and actual bottom
echo. In this case lower the PRR level. The option “SPD SENSING PRR” means the ship’s
speed dependent mode, where the PRR changes automatically with ship’s speed (required
speed input.) For further information about the ship’s speed dependent mode, see page
4-13.
1. Press the MENU key to open the menu.
2. Press the SOUNDER MENU soft key.
3. Select PRR LEVEL.
4. Press the EDIT soft key to open the setting window.
5. Use the Trackball
to select the rate for repetition.
6. Press the ENTER soft key followed by the MENU key to close the menu.
Too small setting reduces the number of pulse repetition. This may cause a problem to
search fish schools. Select “20” unless multistage reflections appear on the display.
4.14 Saving Sounder Picture to an SD Card
You may save the current sounder picture to an SD card, using a function key programmed
to save the sounder picture.
1. Program a function key in order to save the sounder picture. See paragraph 7.9.4 for the
procedure.
2. Hit the SHOW/HIDE key to show the function keys if they are not currently shown.
3. Press the function key programmed to save the sounder picture.
The sounder picture stops advancing and the message “NOW SAVING SOUNDER
PICTURE TO CARD” appears on the display while the picture is being saved. If no card is
inserted, the message “PLEASE INSERT THE CARD. PUSH ANY KEY TO CONTINUE.”
appears. If there is not sufficient memory remaining in the card the message “THERE IS
NO MEMORY TO SAVE PICTURE. PUSH ANY KEY TO CONTINUE.” appears. After the
picture has been recorded, normal sounder operation is restored.
140


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