Operation Manual

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Appendix A
Specifications &
Wiring
Never attempt any repairs yourself. To protect your GPS 48,
keep it in its carrying case when not in use, and never allow
gasoline or other solvents to come into contact with the case.
Clean the case and lens with a soft cloth and a household win-
dow cleaner.
PHYSICAL
Case: Water proof rated to IEC 529 IPX4 standards.
Size: 6.15”H x 2”W x 1.23” D (15.6 x 5.1 x 1.23 cm)
Weight: Approx 9.5 ounces (269g) w/ batteries
Temperature Range: 5º to 158ºF (-15º to 70ºC)
PERFORMANCE
Receiver: 12 parallel channel, differential-ready
Acquisition Time: Approx. 15 seconds (warm start)
Approx. 45 seconds (cold start)
Approx. 5 minutes (AutoLocate
TM
)
Update Rate: 1/second, continuous
Position Accuracy: 1-5 meters (3-17 ft.) with DGPS corrections*
15 meters (49 ft.) RMS**
Velocity Accuracy: 0.1 knot RMS steady state
Dynamics: 6g
POWER
Input: Four 1.5 volt AA batteries or 10-32 vDC
Power Consumption: 1 watt
Battery Life: Up to 24 hours (with 4 AA batteries)
Internal Backup: lithium battery
NOTE: Alkaline batteries lose a significant amount of their capacity as temperature decreas-
es. If you’re using the GPS 48 in below freezing temperatures, use lithium batteries
for longer battery life. Extensive use of screen backlighting will significantly reduce
battery life.
Specifications subject to change without notice.
*With optional DGPS Input.
** Subject to accuracy degradation to 100m 2DRMS under the US DOD-imposed Selective
Availability Program.
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