Real Time Sonar Window - Teleflex TFX160 Operation Manual

A depth range scale appears close to the right side of the LCD display. This
scale indicates the distance from the surface of the w ater to a depth range
sufficient to show the bottom. For example, in 18 feet of w ater a 20 foot
depth range is selected. The depth range scale can be controlled
automatically or manually depending on the mode of operation. In
automatic and bottom lock mode, the
manual mode the depth range is selected by the user.
The sonar returns received by the
scale in a Real Time Sonar (RTS) W indow and Chart W indow. The RTS
W indow displays new sonar information w ithin the transducer cone in an
expanded easy to see format; the Chart W indow logs old RTS W indow
information to show a contour view of the bottom and structure.

Real Time Sonar Window

The Real Time Sonar (RTS) w indow show s
inst ant aneous sonar
bottom, structure and fish that are w ithin the
transducer beam. The RTS w indow updates
w ith new sonar information much more
quickly than the chart w indow - up to 20
times per second in shallow w ater. The RTS
w indow responds to quickly changing depths
similar to a flasher. Interpreting the RTS
information requires some skill; how ever
comparing the RTS presentation w ith the
information on the chart w indow makes it
easy to understand.
The RTS w indow plot s t he dept h and
intensity of a sonar return. Sonar intensity is indicated by the length of the
horizontal lines, w hile depth is indicated by the vertical placement of the
lines next to the depth range scale. The intensity of the sonar return is
divided into 4 levels of grayscale. The most intense returns are show n in
black; less intense sonar returns are show n in progressively lighter shades
of gray.
The combination of the length of the lines and the gray scale level helps to
identify the bottom composition and structure. The bottom is the largest
160
are displayed along the depth range
ret urns f rom
USING THE 160
CONTROL FUNCTIONS
160
selects the depth range. In
t he
Intense
returns
Less
intense
returns
Structure
Bottom
9