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[Transmission
Set the TX power level. See the operator's manual for de-
Power Mode]
tails.
[External KP]
Select on to synchronize with external sounder's keying
pulse.
[Bottom Level HF]
The default bottom level setting (0) determines that two
[Bottom Level MF]
strong echoes received in sequence are bottom echoes. If
[Bottom Level LF]
the depth indication is not stable in the default setting,
adjust the bottom level here. If vertical lines appear from
the bottom echo in the bottom lock display, lower the
bottom level to erase the vertical lines.
If you can not identify the fish near the bottom from the
bottom echo, increase the bottom level.
[Auto Gain Offset
If the auto gain offset is wrong, or there is a difference in
HF]
the gain between the low and high frequencies, set an
[Auto Gain Offset
offset here to balance auto gain for the two frequencies.
MF]
[Auto Gain Offset
LF]
[STC HF]
Adjust the low (LF) or high (HF) STC frequency.
[STC MF]
See the operator's manual for details.
[STC LF]
Note: Shown with connection of DFF3, DFF1-UHD or
DFF3-UHD.
[TX Pulse HF]
The pulse length is automatically set according to range
[TX Pulse MF]
and shift, however it can also be set manually. Use a short
[TX Pulse LF]
pulse for better resolution and a long pulse when detection
range is important. To improve resolution on zoom dis-
plays, use [Short 1] or [Short 2].
• [Short 1] improves the detection resolution, but the de-
• [Short 2] raises the detection resolution, however detec-
• [Std] is the standard pulse length, and is suitable for
• [Long] increases the detection range but lowers the res-
Note: Shown with connection of DFF3 or DFF3-UHD con-
nected to a narrow band width transducer.
[RX Band HF]
Set the bandwidth for low (LF) or high (HF) frequency. The
[RX Band MF]
RX bandwidth is automatically set according to pulse
[RX Band LF]
length. To decrease noise, select [Narrow]. For better
resolution, select [Wide].
Note: Shown with connection of DFF3, DFF3-UHD.
[Temperature Port]
Set the data source for water temperature.
• [MJ Port]: Use the temperature/speed sensor for data.
• [Low Frequency]: Use the LF sensor for data.
• [High Frequency]: Use the HF sensor for data.
Note: Shown with connection of DFF3, DFF1-UHD.
[Reset Default
Reset all menu settings to default.
Page Settings]
Description
tection range is shorter than with [Std] (pulse length is 1/
4 of [Std]).
tion range is shorter (pulse length is about 1/2 of [Std])
than [Std].
general use.
olution (about 1/2 compared to the [Std] pulse length)
3. HOW TO SET UP THE EQUIPMENT
(setting range)
DFF1-UHD: [Off],
[Min], [Auto]
DFF3-UHD: 0 to
10
[OFF], [ON]
-40 to +40
-5 to +5
0 to +10
[Short1],
[Short2],
[Standard],
[Long]
[Narrow],
[Standard],
[Wide]
[MJ Port],
[Low Frequency],
[High Frequency]
[OK], [Cancel]
Options
3-15
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