Power search in eight modes
for fishing and other sonar applications
The CH-250 is a revolutionary, high-performance searchlight sonar designed for a wide range of commercial fishing vessels. Fish and underwater objects are displayed on a compact 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 the 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 half or full circle scan, zoom, vertical scan, vertical sounder, the combination of full or half circle with vertical scan, full circle with history, full circle with strata and full circle with 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 has another unique mode "Cross Section Scan" to view the vertical plane. When you find a specific echo appropriate "CUSTOM MODE BUTTON" and then the cross section scan window appears.
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.
CROSS SECTION SCAN
The CH-250 has an unique "Cross Section Scan" mode.
You can instantly view the vertical plane in a specified direction by pressing the "CUSTOM MODE BUTTON".
It is useful for evaluating the concentration and location of the targeted fish school or navigation purposes.
Press the
"CUSTOM MODE BUTTON"
Vertical Scan
Sector/Full circle Scan
