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APPENDIX B
Wiring &
Specifications
PHYSICAL
Case: gasketed-construction
Size: 4.9”H x 5.3”W x 2.4”D
(15.6 x 5.1 x 1.23 cm)
Weight: Less than 1 lb. (454g)
Temperature Range: 5º to 158ºF (-15º to 70ºC)
PERFORMANCE
Receiver: Differential-ready MultiTrac8
TM
Acquisition Time: Approx. 20 seconds (warm)
Approx. 2 minutes (cold)
Approx. 7.5 minutes (AutoLocate
TM
)
Update Rate: 1/second, continuous
Position Accuracy: 5-10 meters (16-33 ft.) with DGPS corrections*
15 meters (49 ft.) RMS**
Velocity Accuracy: 0.1 knot RMS steady state, 99 knots max.
Dynamics: Performs specification to 3g’s
POWER
Input: 12-18v DC
Usage: 5 watts
Specifications subject to change without notice
* With optional GARMIN GBR 21 Beacon Receiver Input.
** Subject to accuracy degradation to 100m 2DRMS under the US DOD-imposed elective
Availability Program.
The GPS 125 Sounder is constructed of high-quality
materials and should not require user maintenance. Should
your unit ever need repair, please take it to an authorized
GARMIN service center. The GPS 125 Sounder has no
user-serviceable parts. Never attempt any repairs yourself.
To protect your GPS, never allow gasoline or other sol-
vents to come in contact with the case or screen. Clean the
case and screen with a soft cloth and a household window
cleaner.
125 Man Rev B 7/23/98 11:48 AM Page 71