8. FISH FINDER (SOUNDER)
8-20
[External KP]
: Turn on to sync with external keying pulse. (For external sounder)
[Bottom Level HF (LF)]
: The default bottom level setting (0) determines that two
strong echoes received in sequence are bottom echoes. If the depth indication is not
stable in the default setting, adjust the bottom level here.
[Gain Offset HF (LF)]
: If the gain setting is wrong, or there is a difference in the gain
between the low and high frequencies, you can balance the gain for the two frequen-
cies here.
[Auto Gain Offset HF (LF)]
: If the auto gain offset is wrong, or there is a difference in
the gain between the low and high frequencies, set an offset here to balance auto gain
for the two frequencies.
[STC HF (LF)]
: Delete unnecessary echoes (plankton, air bubbles, etc.) near the sur-
face that hide the fish near the surface. The setting range is 0 to 10, and 0 is off. 10
deletes unnecessary echoes from the surface to approximately 16 ft. Make sure you
do not use more STC than necessary, because you can erase the small echoes near
the surface. (For FURUNO DFF3, FURUNO DFF1-UHD)
[Frequency Adjust HF (LF)]
: You can adjust the TX frequency of both the low- and
high-frequency transducers. Use this feature when your fish finder and another fish
finder operate on the same frequency, causing interference. Change the frequency of
your transducer by enough percentage points to remove the interference. (For FURU-
NO DFF3)
[TX Pulse HF (LF)]
: The pulse length is automatically set according to range and
shift.Use a short pulse for better resolution and a long pulse when detection range is
important. To improve resolution on zoom displays, use [Short 1] or [Short 2]. [Short
1] improves the detection resolution, but the detection range is shorter than with [Std]
(pulse length is 1/4 of [Std]). [Short 2] raises the detection resolution, however detec-
tion range is shorter (pulse length is about 1/2 of [Std]) than [Std]. [Std] is the standard
pulse length, and is suitable for general use. [Long] increases the detection range but
lowers the resolution (about 1/2 compared to the [Std] pulse length). (For FURUNO
DFF3)
[Rx Band HF (LF)]
: The RX bandwidth is automatically set according to pulse
length.To decrease noise, select [Narrow]. For better resolution, select [Wide]. (For
FURUNO DFF3)
[Temperature Port]
: Select the data source for water temperature (For FURUNO
DFF3, FURUNO DFF1-UHD).
[MJ]: The water temperature data from the water temperature/speed sensor.
[Low Frequency]: The low frequency measured water temperature.
[High Frequency]: The high frequency measured water temperature.
[Sounder Demo Mode]
: Activates, deactivates the sounder demo mode, which al-
lows operation of the sounder with data stored in the memory. Connection of the trans-
ducer is not required. Requires connection to FURUNO DFF1, FURUNO BBDS1,
DFF3 or FURUNO DFF1-UHD.
[Set Hardware to Factory Default]
: Select this menu item to restore default settings
for the unit selected in [Fish Finder Source] (excludes SMD12/16).
[Reset Default Settings]
: Select this menu item to restore default settings for the
[Sounder] menu.
Summary of Contents for SMD12
Page 57: ...1 SYSTEM INTRODUCTION 1 40 This page is intentionally left blank ...
Page 60: ...2 ENGINE DISPLAY 2 3 Triple engines display Quad engines display ...
Page 87: ...2 ENGINE DISPLAY 2 30 This page is intentionally left blank ...
Page 117: ...3 PLOTTER 3 30 This page is intentionally left blank ...
Page 129: ...4 3D DISPLAY OVERLAYS 4 12 This page is intentionally left blank ...
Page 169: ...6 ROUTES 6 20 This page is intentionally left blank ...
Page 207: ...7 RADAR 7 38 This page is intentionally left blank ...
Page 255: ...10 FILE OPERATIONS 10 8 This page is intentionally left blank ...
Page 267: ...11 CAMERA VIDEO FUSION Link 11 12 This page is intentionally left blank ...
Page 297: ...13 AIS DSC MESSAGE 13 14 This page is intentionally left blank ...
Page 315: ...15 MAINTENANCE TROUBLESHOOTING 15 6 This page is intentionally left blank ...