Furuno TZT9 - Dual Frequency Display

7. FISH FINDER
7-3
7.2.2 Dual frequency display
The dual frequency display provides both low and high frequency pictures. Use the
dual frequency display to compare the same picture with two different sounding fre-
quencies.
How to select the dual frequency display
Select [Mode] from the RotoKey menu then select [Dual Freq.].
How to reverse the display pictures between low and high frequencies
In the default setting, the low frequency picture is on the left, and the high frequency
is on the right. To reverse the pictures between low and high frequencies, select [Fre-
quency] from the RotoKey menu then select [LF]. The picture for the frequency option
([HF] or [LF]) selected here is displayed on the right.
7.2.3 Zoom displays
Zoom mode expands selected area of the single frequency picture. Two modes are
available: bottom lock and bottom zoom.
How to activate a zoom display
1. Select [Mode] from the RotoKey menu.
2. Select [Btm Lock] or [Btm Zoom].
To quit the zoom display and go to the single frequency display, select [Mode] from
the RotoKey menu then select [Single Freq.].
You can switch the frequency for the zoom displays by tapping the sounder scale box
at the bottom left-hand corner of the screen.
Low
frequency
High
frequency
LF HF
156
300
DATA 1
DATA 1
DATA 2
DATA 2
RADAR
AR
R
R
R
R
R
RADAR
DAR
D
AR
R
R
R
R
R
RADAR
RADAR
DATA 2
DATA 2
DATA 1
DATA 1
Freq.
(kHz)
Low
High
Beamwidth Resolution
Detection
range
Bottom
tail
Wide
Narrow
Low
High
Deep
Shallow
Long
Short
Bottom lock/Low frequency
Bottom zoom/Low frequency
Bottom lock/High frequency
Bottom zoom/High frequency
For TZTBB, tap the area circumscribed above to switch between high and low frequencies.
Note: You can change the range by tapping the depth (see paragraph 7.4.2).
Sounder scale box
Depth
Depth
Depth
Depth
Sounder scale box
Sounder scale box
Sounder scale box