SP-2
(3) Transceiver
Transmitter High power MOS FET amplifier with 10-step power reduc-
tion switch
Receiver Low noise superheterodyne, continuously scanning beam
forming, TVG, AGC, signal/processing, interference rejec-
tor, horizontal vertical beam switching.
(4) Beamwidth (-3 dB) and Tilt Angle
TX Beamwidth 360° (horizontal) x 13° to 16° (vertical)
RX Beamwidth 9° to 18° (horizontal) x 13° to 16° (vertical)
Tilt Angle -5° (upward) to 60° (downward), continuous.
NOTE: Beamwidth depends on transmitter frequency.
2. DISPLAY
(1) Picture Display CSH-23F: PPI display on 15 inch non-glare, high-resolu-
tion color CRT
CSH-24F: PPI display on 21 inch non-glare, high-resolu-
tion color CRT
(2) Color
16 colors (sonar picture), 4 colors (marks)
(3) Display Mode a) Normal Mode (*with or without data display)
b) Off-center
c) Echo sounder combination (normal plus echo sounder)
d) Audio combination
e) Port/ starboard combination
f) Horizontal slice combination
g) Target slice
h) True motion*
(4) Display Marks Own ship mark, heading mark, range rings, range/bearing
mark, trackball mark, event mark, net shooting mark, fish
mark, estimate mark, bearing scale, north mark*, ship’s
track*, current mark*, net sonde mark*, target lock mark*
(5) Alphanumeric Data Sonar picture (range, tilt angle, gain), Trackball mark data
(slant range, horizontal range, depth, bearing), Event mark
data (horizontal range, depth, first event-marked depth,
bearing), Fish mark data (distance moved*, direction* and
speed* between two latest fish marks), Estimate mark data
(estimation of fish volume by echo strength), Net shooting
data (time and distance run* between turning on and off of
net shooting mark), Setting change data (new setting ap-
pears in larger characters for 5 seconds when changed),
Current data* (current speed, direction, layer, depth),
