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Appendix A
Specifi cations
Appendices
SECTION 4
Physical
Case: Fully-gasketed, high-impact plastic alloy, waterproof to IPX7
standards (waterproof to one meter for 30 minutes)
Size: 4.4”H x 2”W x 1.2”D
Weight: Approx. 5.3 ounces (150g) w/batteries
Temperature Range: 5° to 158°F (-15° to 70°C) (operating)
Performance
Receiver: Differential-ready, 12 parallel channel
Acquisition time: Approx. 15 seconds (warm start)
Approx. 45 seconds (EZinit/cold start)
Approx. 5 minutes (First Time/AutoLocate™)
Update Rate: 1/second, continuous
GPS Accuracy: <15 meters (49 ft) RMS, 95% typical
2
DGPS (USGC) Accuracy: 3-5 meters (10-16 ft), 95% typical with DGPS corrections
1
DGPS (WAAS) Accuracy:
<3 meters (10 ft), 95% typical with DGPS corrections
2
Velocity Accuracy: 0.05 meter/sec steady state
Dynamics: Performs to specifi cations to 6 g’s
Interfaces: NMEA 0183, RTCM 104 (for DGPS corrections) and
RS-232 for PC interface
Antenna: Built-In patch
Power
Input: Two 1.5-volt AA batteries
3
Power Consumption: 0.5 watts max.
Battery Life: Up to 18 hours of typical use in ‘Battery Saver’ mode
4
Specifi cations subject to change without notice.
1
With optional GARMIN Differential Beacon Receiver Input (such as GARMIN GBR 21 or 23).
2
Subject to accuracy degradation to 100m 2DRMS under the U.S. DoD-imposed Selective Availability
program.
3
The temperature rating for the eTrex Legend may exceed the usable range of some batteries. Alkaline
batteries can rupture at high temperatures. External power can only be applied using the GARMIN Auto
Power Adapter or PC Interface Cable with Auto Power Adapter. These cables contain a 12 VDC to 3 VDC
voltage regulator. Modifi cations or other applications will void the product warranty.
4
Alkaline batteries lose a signifi cant amount of their capacity as temperature decreases. Use lithium
batteries when operating the eTrex Legend in below-freezing conditions. Extensive use of screen
backlighting will signifi cantly reduce battery life. Different brands of batteries will vary in performance.