Appendix A 253
Fishfinder features
MARPA Manual acquisition of 10 targets, automatic tracking, dan-
gerous target alarms, safe zone, target history, true or rela-
tive vectors, CPA graphics and indication of target speed/
course, bearing/ range, CPA and TCPA.
Variation Source Auto (SeaTalk/NMEA/Internal algorithm) or Manual
Guard Zone Alarm 2 guard zones, selectable sensitivity level, audible alarm
Auto GST Auto control of gain, sea clutter and tune.
Off Centre function
In Relative Motion,
1
/
3
or
2
/
3
selectable)
Wakes 10s, 30s, 1 min, 5 min, 10 min, OFF
Target Expansion Operator selectable with 2 levels available, OFF
Timed TX Rotation periods: 10, 20 or 30 scans
Repetition periods: 3, 5, 10 or 15 minutes
AIS overlay Switch AIS symbols on/off. Display heading/speed vectors
and ROT. View detailed AIS data, safety critical target data,
ALR and SRM messages. Set up a safe zone.
Transducer Transom-mount, in-hull or thru-hull
Digital Sounder Module Uses DSM 300
Output power:
Standard transducer
High performance trans-
ducer
Adjustable to 600 watts RMS
Adjustable to 1000 watts RMS
Frequency Dual 50 kHz and 200 kHz
Pulse length 100 usec to 4 msec
Sonar display A-scope real time.
Maximum Transmit Rate 1580 pulses/ min at 50 ft range
Depth:
Standard transducer
High performance trans-
ducer
3 ft (1m) to 3000 ft (1000m)
3 ft (1m) to 5000 ft (1700m)
Alarms Fish alarm, fish alarm depth, shallow and deep fish limit
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