Garmin gpsmap-188 User Manual

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PECIFICATIONS

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) 

Weight:  188: 1.7 lbs. (.77Kg); 188C: 2.6 lbs. (1.18 kg)
Display:  188: 5.5" diagonal (14.1cm)  

188C: 5.0" diagonal (12.7cm) 16-color TFT display with 

backlighting (234 x 320 pixels) 

Case:  Fully gasketed, high-impact plastic alloy, waterproof to IEC 

529-IPX-7 

Temp. Range:  5°F to 158°F (-15°C to 70°C) 

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 100 m 2DRMS under the U.S. DOD-imposed 

Selective Availability Program.

Source:  188: 8-35 V DC; 188C: 10-35V DC
Usage:  188: 4 watts max. at 13.8 vDC;  

188C: 10 watts max. at 13.8vDC

Fuse: 188: AGC/3 AG-2.0 Amp; 188C: AGC/3 AG-5.0 Amp

Sounder Power: 500 watts (RMS); 4000 watts (peak to peak) 
Frequency: 50/200 kHz (45°/15°)
Depth: 1,500 foot max depth*

* Depth capacity is dependent on water salinity, bottom type and other water 

conditions.