Appendix A - Specifications
GENERAL
Size: 5.9” H x 6.5”W x 2.6” D (150mm H x 164mm W x 65mm D)
Display: 127 mm (5”) diagonal, TFT color, 480 x 640 pixels.
Backlight: Display and keys
Supply voltage
10.5V DC to 30.5 V DC. Supply current: at 13.8 V
350 mA min - no backlighting.
1A max - full backlighting. ]
External beeper or light output: Switched to ground to sound alarm, 30 V DC, 200 mA maximum.
Operating temperature 0°C to 50°C (32°F to 122°F)
ALARMS:
User set: Arrival radius, anchor, XTE, danger, dangerous AIS vessels, too shallow, too deep, fish, temperature, temperature rate, low battery, low fuel (optional), loss of DGPS fix
Fixed: Loss of GPS fix
GPS NAVIGATION
Chart card:
User card: 3.3 V
Waypoints: Up to 3000, with default or user- defined alphanumeric names up to eight characters.
Routes: 25 Routes, with up to 50 points each
Tracks: By time or distance, one track of 2000 points and four of 500 points.
Chart datums
121 Chart datums (see next page)
One
Chart scale: 0.05 to 4096 nm for chart (chart dependent) down to 0.01 nm in plotter mode.
SONAR FISHFINDING
Depth range:
0.6m (2 ft) to 1000 m (3300 ft )
Sonar output:
Power: Variable, up to 600 W RMS
Dual frequency: 50 khz and 200 kHz
Transom transducer cable length: 10 m (33 ft)
Depth acquisition time from startup: Typically 2 seconds at 30 m (100 ft)
Temperature:
Range 0° to 37.7°C (32° to 99.9°F)
Resolution of 0.1° unit.
Speed (from paddlewheel transducer): 1 to 96.6 kph (57.5 mph, 50 kn).
FUEL COMPUTER
(Optional fuel sensor(s) required)
Engine types:
Outboard carburetted two stroke and EFI petrol/gasoline engines: 50 to 300 hp. Outboard four stroke petrol/gasoline engines: 90 to 300 hp.
Inboard petrol/gasoline engines: 70 to 400 hp.
Flow rate:
Minimum: 5 litres per hour (1.3 U.S. gallons per hour).
Maximum: 130 litres per hour (34 U.S. gallons per hour).
COMMUNICATIONS
NavBus
Connection to other Northstar instruments.
NMEA
NMEA 0183 ver 2 4800 baud
Inputs from compatible instruments: BWR, DPT, GGA, GLL, GSA, GSV, HDG, HDM, HDT, MTW, MWV, RMC, VHW, VTG and DBT Outputs, for compatible instruments:
APA, APB, BWR, DBT, DPT, GGA, GLL, GSA, GSV, RMB, RMC, MTW, VHW, VLW, VTG, XTE
STANDARDS COMPLIANCE
EMC:
USA: FCC Part 15 Class B.
Europe: (CE)
New Zealand and Australia: (C Tick)
3548.
Environment: IPx6/IPx7/CFR46 (with card holder
and connections in place)
84 | Northstar Explorer 657 Installation and Operation Manual |