Garmin GPSMAP 238 Sounder User Manual download pdf (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

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Garmin GPSMAP 238 Sounder User Manual Page 126