There’s only one name for quality and performance in GPS technology: Oncore. The Oncore family is a full line of GPS receivers developed and built by Motorola for the OEM and Systems Integrator marketplace.

The GT Plus Oncore is one of the newest members of the successful Oncore family, developed specifically for land vehicle applications. The GT Plus Oncore adds more features at a lower cost, and is available in unlimited quantities. Continuing with the 8-channel design of the Oncore family, the GT Plus Oncore reflects Motorola’s high standard for performance in foliage and urban canyon environments. In addition, the GT Plus Oncore’s TTFF (time to first fix) and reacquisition times are our fastest ever. Added to this are RTCM correction input, NMEA output, and a user controlled velocity filter.

Measuring 50.8 x 82.6 x 16.3 mm, the GT Plus Oncore is mechanically and electrically backwards compatible with the VP Oncore. To minimize software changes the I/O is a subset of the existing Oncore messages. The GT Plus Oncore also has very low power requirements and is well suited for embedded applications.

The Oncore family of GPS receivers incorporate Motorola GPS custom ICs (integrated circuits), Motorola MPUs (microprocessor units), and Motorola GPS receiver software. Add QS-9000 certification, reliability, responsive support and the long-term commitment you’ve come to expect from Motorola, and you understand why Oncore is the quality choice.

• 8 parallel channel
• L1 1575.42 MHz
• C/A code (1.023 MHz chip rate)
• Code plus carrier tracking (carrier aided tracking)

• 8 simultaneous satellite vehicles

• Velocity: 1000 knots (515 m/s); > 1000 knots at altitudes < 60,000 ft
• Acceleration: 4 g
• Jerk: 5 m/s³
• Vibration: 7.7G per Military Standard 810E

(Tested at -30 to +85°C)

• < 15 s typical TTFF-hot (with current almanac, position, time and ephemeris)
• < 45 s typical TTFF-warm (with current almanac, position and time)
• < 90 s typical TTFF-cold
• < 1.0 s internal reacquisition (typical)

• 100 m 2dRMS with SA as per DoD specification
• Less than 25 m SEP without SA
• 1-5 m typical in differential mode

• < 130 ns (1 sigma) with SA on

• Active micro strip patch antenna module
• Powered by receiver module (5-80 mA @ 5 Vdc)

• WGS-84
• One user definable datum

• Latitude, longitude, height, velocity, heading, time
• Motorola binary protocol at 9600 baud
• NMEA at 4800 baud: GGA, GLL, GSA, GSV, RMC, VTG, ZDA
• Software selectable output rate (continuous or poll)
• TTL interface (0 to 5 V)
• Second COM port for RTCM input

• 5 ± 0.25 Vdc; 50 mVp-p ripple (max.)

• External 2.5 Vdc to 5.25 Vdc; 5 µA (typ.) @ 2.5 Vdc

• < 0.9 W @ 5 Vdc with active antenna drawing 20 mA

• 50.8 x 82.6 x 16.3 mm [2.00" x 3.25" x 0.64"]

• 51 g  [1.8 oz.]

• Data/power: 10 pin (2x5) unshrouded header on 0.100" centers
• RF: right angle OSX (subminiature snap-on)

• Single coaxial cable
• Antenna sense circuit

• -40°C to +85°C

• 95% noncondensing +30°C to +60°C

• 60,000 ft [18 km] (max.)
• > 60,000 ft [18 km] for velocities < 1000 knots

• Motorola DGPS input corrections at 9600 baud on COM port one
• RTCM SC-104 input Type 1 and Type 9 messages for DGPS at  2400, 4800, or 9600 baud on COM port two
• NMEA 0183 output
• Velocity filtering (user controlled)

• Lithium battery
• Right angle SMB RF connector
• On-board LNA for passive antenna support
• Low profile shields

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