CH-250 Color LCD Searchlight Sonar
The CH-250 is a revolutionary new, high-performance searchlight sonar
designed for a wide range of commercial fishing vessels. Fish and underwater
objects are displayed on a compact active matrix color LCD screen. Target
echoes are presented in 8 or 16 colors depending on the received echo strengths.
The highest echo level is painted in red and next strongest echo in orange,
and other colors follow with reducing echo levels. One of the echo strengths
can be displayed in white to enhance that specific echo level. The background
color may be customized for optimum viewing at day or night. An operating
frequency can be selected from 60, 88 or 150 kHz.
The CH-250 is provided with eight operational modes including Sector
or Full circle scan, Vertical scan, Combination display of Full circle and
Vertical scan, Historical or VideoPlotter. The combination of Full-circle
and Vertical scan mode helps evaluate the distribution of fish school in
horizontal and vertical planes simultaneously.
The CH-250 provides three modes to track a targeted echo: manual mode,
target lock mode and L/L mode. The target lock mode permits automatic tracking
of a target fish school within a predetermined search zone after it has been
acquired in manual operation. In the L/L mode, the beam is locked to the
position (such as a fish shelter or reef) specified by the target marker.
This mode can be enhanced with DGPS position input.
The compact display design allows a flexible and space-saving installation
at your navigation station. With an optional interface unit, a conventional
CRT or LCD monitor can be connected as a substitute, backup or remote display
of the standard display unit. The low-profile hull unit requires only a limited
space for installation. There is a choice of hull units, either 250 mm or
400 mm travel.