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Product Name:OEM638
Product Description:The OEM638 is the most advanced Global Navigation Satellite System (GNSS) receiver within NovAtel’s OEM6 series of products. From standalone metre-level to centimetre-level positioning, the fully featured OEM638 provides the flexibility to meet your unique positioning needs. With 240 channels and comprehensive tracking and positioning with all current and planned GNSS systems, the OEM638 is field upgradeable, eliminating the need for future hardware changes. The unprecedented user configurability of the OEM638 makes it an ideal solution for reference station, timing and a wide range of precision positioning applications
Type:Land, Marine, Land and marine
Year of initial introduction :
Height [m]:0.085
Depth [m]:0.125
Width [m]:0.0143
Total weight [kg]:0.084
Housing material:
Operating power: min. [V]:3.5
Operating power: max. [V]:36
Typical consumption [W]:2.8
Internal power supply:
External power supply:
Operating time with internal power supply [hr]:
Rechargeable with (auto)battery :
Direct car connection cable available :
Operating temperature: min. [°C]:-40
Operating temperature: max. [°C]:85
Humidity resistance:95% non-condensing
Water sand and dust proof:
Shock and vibration proof:Vibration, Shock and Bump Proof
ROHS compliance:Y
WEEE compliance:Y
No. channels:240
Max. simultaneous tracked channels:
Tracked satellite signals:GPS: L1, L2, L2C, L5. GLONASS: L1, L2. Galileo: E1, E5a, E5b, AltBOC. BeiDou: B1, B2. L-Band.
SBAS differential signals:WAAS, EGNOS, GAGAN, QZSS, MSAS
Type of measurements:Full carrier phase and code
Reacqisition time [s]:0.5
RTK Network Compatibility:Y
MRS functionality:Y
Horizontal uncertainty 
code: DGNSS/RTC (constant part) [m]:
code: DGNSS/RTC (variable part) [ppm]:
phase: RTK rapid static (constant part) [m]:
phase: RTK rapid static (variable part) [ppm]:
phase: RTK kinematic (constant part) [m]:
phase: RTK kinematic (variable part) [ppm]:
phase: static post processing (constant part) [m]:
phase: static post processing (variable part) [ppm]:
phase: kinematic post processing (constant part) [m]:
phase: kinematic post processing (variable part) [ppm]:
Initialization time on the fly [s]:10
Range on the fly [km]:
RTK network solution methods:RTCM, CMR, CMR+, RTCA
Memory medium :Flash Memory
Data capacity [MB]:4096
Type of data (on board recording):Log Files
Data input :Abbreviated ASCII, ASCII and binary
Communication: general 
Communication ports:Serial Ports: RS-232/422 (2), CMOS Level UART (3), IMU Port (1). USB 2.0: Device (1), Host (2). Ethernet (1), CANBus (2), Event input (4), Event output (7).
Simultaneous links:Y
Bluetooth :N
Communication: links 
Radio modems :external
GSM; UMTS phone modems:external
CDMA phone modems:external
Landline modems:external
Communication: Protocols 
RTCM standards for differential data:2.1; 2.3; 3.0; 3.1
CMR standards for differential data:CMR, CMR+
Other formats for differential data:RTCA
NMEA output format:0183
other output formats:NovAtel ASCII and binary logs
L-Band Compatible:Y
Configuration method :PC Software, web interface
More information 
Distinguishable features :Current and upcoming GNSS signal support ensures future proofing of your GNSS products. Powerful and improved performance to work with your demanding applications. Application Programming Interface (API) reduces hardware requirements and complexity improving your ROI and time to market. SPAN® ready for rapid integration in GNSS+INS. Multiple communication interfaces provide flexible and fast integration. 240 channels to support all constellations. Advanced interference rejection for robust operation in harsh interference environments. 4 GB onboard memory for data logging and easy storage and retrieval. Up to 100 Hz data output to meet your high dynamic needs.

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Supplier Information
  • NovAtel

  • 1120 - 68th Avenue N.E.
  • T2E 8S5 Calgary
  • Alberta
  • Canada



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