Garmin GPSMAP 178C Sounder - Manual (Page 126)

Appendix H
Specifications
Physical Specifications
Size: 4.9" H x 6.3" W x 3.7" D (122.5mm x 157.5mm x 92.5mm)
Weight: 1.0 lb 3.5oz.(.553Kg)
Display: (178C) 3.2” W x 3.2” H (81.28mm) CSTN (Color Super Twist Nematic) with
adjustable CCFL (Cold Cathode Fluorescent Lamp) backlighting; (320x320
pixels)
(178) . 3.2” W x 3.2” H (81.6 mm) 10 level grayscale FSTN (Film Super Twist
Nematic) with adjustable CCFL (cold cathode) backlighting; (320x320 pixels)
Case: Fully gasketed, high-impact plastic alloy, waterproof to IEC 60529-IPX-7
Temp. Range: 5°F to 158°F (-15°C to 55°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
DGPS (WAAS) Accuracy:
Position: <3 meters (10 feet), 95% typical*
Velocity: 0.05 meters/sec steady state
Dynamics: 6g's
* Subject to accuracy degradation to 100m 2DRMS under the U.S. DOD-imposed Selective Availability Program.