7. FISH FINDER (SOUNDER)
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you do not use more STC than necessary, because you can erase the small echoes
near the surface. (For DFF3, DFF1-UHD)
[Frequency Adjust HF (MF, 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 frequen-
cy of your transducer by enough percentage points to remove the interference. (For
DFF3)
[TX Pulse HF (MF, 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 DFF3, DI-
FFAMP)
[Rx Band HF (MF, LF)]: The RX bandwidth is automatically set according to pulse
length.To decrease noise, select [Narrow]. For better resolution, select [Wide]. (For
DFF3)
[Temperature Port]: Select the data source for water temperature (For DFF3, 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.
[Fish Finder Demo Mode]: Activates, deactivates the fish finder demo mode, which
provides a fish finder display with data stored in the memory. Connection of the trans-
ducer is not required. Requires connection to the internal fish finder, DFF1, BBDS1,
DFF3, DFF1-UHD, or DI-FFAMP.
[Off]: Disables the fish finder demo display.
[Set Hardware to Factory Default]: Select this menu item to restore default settings
for the unit selected in [Fish Finder Source] (excludes TZTL12F/15F and TZT2BB).
[Reset Default Settings]: Select this menu item to restore default settings for the
[Fish Finder] menu.
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