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GPSmap 76C
Appendix
WAAS (DGPS) Accuracy
Position: 3-5 meters (10-16 feet), 95% typical
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Velocity: 0.05 meter/sec steady state
Dynamics: Performs to specifi cations to 6 g’s
Interfaces: NMEA 0183 version 3.01, RTCM SC-104 (for
DGPS corrections) and RS-232 and
USB for PC interface
Data Storage Life: Indefi nite: no memory battery required
Map Storage: Internal; approximately 115 MB
POWER
Source: Two 1.5 volt AA batteries or 12 V Adapter Cable,
or up to 36 VDC external power
Battery Life: Up to 30 hours (typical use)
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Specifi cations subject to change without notice.
1. The temperature rating to the GPSmap 76C may exceed the usable range of some batter-
ies. Some batteries can rupture at high temperatures.
2. Subject to accuracy degradation to 100m 2DRMS under the U.S. DoD imposed Selective
Availability (SA) Program.
3. WAAS accuracy in North America. (DGPS using Beacon Receiver input.)
4. Alkaline batteries lose a signifi cant amount of their capacity as the temperature decreases.
Use Lithium batteries when operating the GPSmap 76C in below-freezing conditions.
Extensive use of screen backlighting and audible tones signifi cantly reduce battery life.
Specifi cations
GPSmap 76C Owner's Guide copy.indd 71 10/5/2004, 1:56:52 PM