Garmin GPSMAP 238 Sounder - Manual (Page 126)

116
Appendix J
Specifi cations
Physical Specifi cations
Size: 188: 6.2" H x 6.3" W x 2.6" D (15.8cm x 16.0cm x 6.6cm)
188C: 6.2" H x 6.3" W x 3.7" D (15.8 cm x 16.0 cm x 9.4 cm)
238: 7.5" H x 7.7" W x 2.6" D (19.1 x 19.6 x 6.6 cm)
Weight: 188: 1.7 lbs. (.77Kg); 188C: 2.6 lbs. (1.18 kg); 238: 2 lbs. (.91Kg)
Display: 188: 5.5" diagonal (14.0cm) 238: 7.1" diagonal (18.00cm) high-contrast, 10-level
grayscale FSTN LCD with adjustable backlighting (360 x 240 pixels
188C: 5.0" diagonal (12.7 cm) high-contrast, 16-color TFT display with adjustable
backlighting (234 x 320 pixels)
Case: Fully gasketed, high-impact plastic alloy, waterproof to IEC 529 IPX7 standards
Temp. Range: 5°F to 158°F (-15°C to 70°C)
Performance
Receiver: Differential-ready 12 parallel channel WAAS capable receiver
Acquisition Times*
Warm:
Approx. 15 seconds
Cold: Approx. 45 seconds
AutoLocate: Approx. 2 minutes
Update Rate: 1/second, continuous
GPS Accuracy
Position**: <15 meters (49 feet), 95% typical*
Velocity:
0.05 meters/sec steady state
DGPS (USCG) Accuracy
Position:
3-5 meters (10-16 feet) with optional Garmin DGPS receiver, 95% typical*
Velocity: 0.05 meters/sec steady state (contd.)
188188C238 Manual Part 2.indd 116 6/30/2003, 3:33:00 PM