Receiver: WAAS enabled; 12 parallel channel GPS receiver continuously tracks and uses up to 12 satellites to compute and update your position

Acquisition times:*

• Reacquisition: Less than 2 seconds
• Warm: Approximately 15 seconds
• Cold: Approximately 45 seconds
• AutoLocate™: 5 minutes
• SkySearch: 5 minutes

Update rate: 1 to 900 seconds between updates; programmable in 1 second increments

GPS accuracy:

• Position: < 15 meters, 95% typical**
• Velocity: 0.1 knot RMS steady state

DGPS (WAAS) accuracy:

• Position: < 3 meters, 95% typical
• Velocity: 0.1 knot RMS steady state

Dynamics: 999 knots, 6g’s

Map datums: 108 predefined, 1 user

Serial interface:

• 18 USB: 2.0 Full Speed (also compatible with USB 1.1 Full Speed hosts)
• 18 PC & LVC: Asynchronous serial input compatible with RS-232 or TTL voltage levels, RS-232 polarity

Baud rates: 300/600/1200/2400/4800/9600/19200/38400

Serial format:

• 18 USB: Garmin USB format
• 18 PC & LVC: Selectable between NMEA 0183 v2.00, NMEA 0183 v3.00, and GARMIN binary formats; Approved output sentences: GPALM, GPGGA, GPGLL, GPGSA, GPGSV, GPRMC, GPVTG; Proprietary sentences: PGRMB, PGRME, PGRMF, PGRMM, PGRMT, PGRMV

PPS output (18 LVC only): 1 Hz pulse, programmable width, 1 microsecond accuracy

Temperature:

• Operating: –30° to 80°C
• Storage: –40° to 90°C

Size: 61.0 mm diameter x 19.5 mm height

Weight:

• 18 USB: 100.4g
• 18 PC: 184.6g
• 18 LVC: 115.6g

Connectors:

• 18 USB: type A connector
• 18 PC: DB-9 connector

Part number:

• 18 USB: 010-00321-51
• 18 PC: 010-00321-54
• 18 LVC: 010-00321-56

Specifications are preliminary and subject to change without notice.

* Warm = all data known.
Cold = position, time and almanac known.
AutoLocate = almanac known, position and time unknown.
SkySearch = no data known.

** Subject to accuracy degradation to 100m 2DRMS under the U.S. Department of Defense imposed Selective Availability Program.