Table of Contents
Advertisement
Menu item
[Bottom Level HF]
The default bottom level setting (0) determines that two
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.
[Gain Offset HF]
If the gain setting is wrong, or there is a difference in the
gain between the low and high frequencies, you can
[Gain Offset LF]
balance the gain for the two frequencies here.
[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
offset here to balance auto gain for the two frequencies.
[Auto Gain Offset
LF]
[STC HF]
Adjust the low (LF) or high (HF) STC frequency.
See the operator's manual for details.
[STC LF]
Note: This menu item is available only for DFF3, DFF1-
UHD and DI-FFAMP users.
[Frequency Adjust
Adjust the low (LF) or high (HF) frequency to remove
HF]
interference caused by other fish finders operating on the
same frequency as your fish finder.
[Frequency Adjust
See the operator's manual for details.
LF]
Note: This menu item is available only for DFF3 users.
[TX Pulse HF]
The pulse length is automatically set according to range
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: This menu item is available only for DFF3 and DI-
FFAMP users.
[RX Band HF]
Set the bandwidth for low (LF) or high (HF) frequency. The
RX bandwidth is automatically set according to pulse
[RX Band LF]
length. To decrease noise, select [Narrow]. For better
resolution, select [Wide].
Note: This menu item available only for DFF3 users.
[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: Available only for DFF3 and DFF1-UHD users.
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
Options (setting
[-40] to [40]
[-50] to [50]
[-5] to [5]
[0] to [10]
[-50] to [50]
[Short1],
[Short2],
[Standard],
[Long]
[Narrow],
[Standard],
[Wide]
[MJ Port],
[Low Frequen-
cy], [High Fre-
quency]
range)
3-15
Advertisement
Table of Contents
