The ComNav Technology M300 Plus GNSS Receiver is a multi-purpose, high-precision GNSS receiver designed for a wide range of applications, including positioning infrastructure, active geodetic networks, deformation monitoring systems, machine guidance, harbor construction, land surveying, and marine surveying. It integrates powerful processing capabilities to provide accurate and reliable measurements.
Function Description:
The M300 Plus serves as a key part of positioning infrastructure, offering advanced GNSS tracking and processing. It supports various modes of operation, including Base and Rover, and can be configured through a web browser interface. The receiver is capable of recording raw data and correction data, and it supports various input/output configurations for seamless integration into different systems. Its robust design allows for operation in challenging environments, making it suitable for both static and mobile applications.
Important Technical Specifications:
- Signal Tracking:
- 574 channels with simultaneously tracked satellite signals.
- GPS: L1 C/A code, L1/L2 P code, L2C, L5.
- BeiDou: B1, B2, B3.
- BeiDou Global Signal: B1C, B2a.
- GLONASS: L1, L2.
- Galileo: E1, E5-A, E5-B.
- QZSS: Reserved.
- Extended NMEA-0183 BDGGA, GPNTR, GPCDT, GPHPR.
- Observations: ComNav binary, BINEX, RTCM3.X, compatible with major CORS software (VRS, FKP and IMax).
- Data Logging:
- Loop recording data function.
- Supports long time record.
- Data logging frequency: maximum 50Hz.
- Storage capacity: 32 GB internal memory, 1TB external memory maximum.
- File format: Rinex 3.X or 2.X or ComNav binary format.
- File log session.
- Days or hours can be set by user.
- Data transfer: FTP and USB.
- Time Precision:
- Positioning Specifications:
- Post Processing Static:
- Horizontal: 2 mm + 0.5ppm RMS.
- Vertical: 4 mm + 0.5 ppm RMS.
- Single Baseline RTK (<30KM):
- Horizontal: 8 mm + 1 ppm RMS.
- Vertical: 15 mm + 1 ppm RMS.
- Network RTK:
- Horizontal: 8 mm +0.5 ppm RMS.
- Vertical: 15 mm + 0.5 ppm RMS.
- E-RTK:
- Horizontal: 0.2 m +1 ppm RMS.
- Vertical: 0.4 m + 1 ppm RMS.
- DGPS: 0.5 m 3D RMS.
- SBAS: 1 m 3D RMS.
- Standalone: 1.5 m 3D RMS.
- Communications:
- 3 Lemo Ports.
- One Lemo port (2 pin): power supply and battery charging.
- One Lemo port (7 pin): USB UART port for system debugging and static data download.
- One Lemo port (7 pin): RS485 Protocol for configuring and connecting with external device (meteorological sensor/barograph/inclinometer).
- 1 DB9 male port: Standard RS232 protocol.
- 1 Standard USB port.
- Connect with external storage card.
- 1 RJ45 LAN Ethernet port (10/100M Bit) supports protocols HTTP, HTTPS, TCP/IP, UDP, FTP, NTRIP.
- 5 SMA male connectors.
- 1 PPS output.
- Event input.
- Reserve for WLAN.
- Frequency-marker oscillator input connector.
- GPRS antenna connector.
- 1 TNC connectors.
- GNSS Antenna connector.
- 1 SIM Card Slot.
- Nano-SIM card.
- Data Format:
- Correction data I/O: RTCM 2.x, 3.x, RTCM3.2, MSM4, MSM5, CMR (GPS only), CMR+(GPS only).
- Positioning data outputs: ASCII: NMEA-0183 GSV, RMC, HDT, VHD, GGA, GSA, ZDA, VTG, GST, PJK, PTNL.
- Antenna:
- AT340 GNSS Geodetic Antenna.
- AT350 GNSS Choke Ring Antenna.
- AT500 GNSS Choke Ring Antenna.
- AT600 GNSS Choke Ring Antenna.
- User Interface:
- 4 LEDs in front panel.
- ComNav M300 Plus Web Server.
- Physical:
- Size (L x W x H): 225mm x 176mm x 67mm.
- Weight: 2 kg.
- Housing: Rugged aluminum housing.
- Environmental:
- Operating temperature: -40°C to +80°C.
- Storage temperature: -45°C to +85°C.
- Humidity: 100% no condensation.
- Water proof and dust proof: IP67, survives the temporary immersion to a depth of 1 m.
- Shock: rugged aluminum case plus plastic ring seal, designed to survive a 1m drop onto concrete.
- Electrical:
- Power consumption: <5W.
- External power input: 7-36 VDC, with over-voltage protection.
Usage Features:
- Easy Setup and Configuration: The M300 Plus can be easily set up and configured through a web browser, allowing users to access and manage receiver settings remotely. This includes logging into the configuration page, checking receiver status, and adjusting various parameters.
- Flexible Antenna Mounting: The receiver supports various antenna types (AT340, AT350, AT500, AT600) and offers guidelines for optimal antenna placement to ensure high-quality observations. This includes considerations for mobile/kinematic applications, open sky views, and avoiding interference.
- Comprehensive Data Recording: Users can configure recording settings, including recording name, storage options (internal or external memory), sample interval, file split, data format (CNB, RINEX2.10, RINEX3.02, RINEX3.04), and compression. The system supports loop recording and provides ample storage capacity.
- Data Transfer Options: Data can be downloaded via a web server, USB drive, or FTP. The FTP push setting allows for automatic data transfer to an FTP server, enhancing data management efficiency.
- I/O Configuration: The receiver offers extensive I/O configuration options for serial ports (COM1, COM2, Lemo) and TCP/IP (TCP Server, TCP Clients, NTRIP Client, NTRIP Server, NTRIP Caster). This flexibility enables integration with various external devices and correction data sources.
- Internet Services: Supports Ethernet, WiFi, PPP Dial Setting (for 4G modem), DDNS, Natap, Ngrok, and Routing Setting, allowing for diverse network connectivity and remote access.
- Email Client and Alerts: Features an email client for sending notifications and email alerts for events such as power on/off, external power break, battery low, and FTP push failed/code expired.
- Firmware Update: The receiver's firmware can be updated through the web interface, ensuring the device stays current with the latest features and improvements.
- User Management: Provides user management features to add, delete, or edit user accounts with different levels of authority (Administrator, Ordinary User).
- Programmatic Interface: Supports programmatic commands for advanced control and configuration, including checking version information, port configuration, output data information, and satellite lockout/unlockout.
- Event Marker and PPS Output: The M300 Plus supports an event marker function for precise time-stamping of external events and provides PPS output for synchronization.
Maintenance Features:
- Receiver Utility: The web interface includes a "Receiver Utility" section for essential maintenance tasks:
- Clean EPH: Deletes ephemeris information saved in the receiver.
- Reboot: Restarts the receiver.
- Power Off: Turns off the receiver.
- Factory Default: Recovers the receiver to factory default settings.
- Running Log: Provides a "Running Log" feature to download user/system logs. Users can select specific log categories (power on/off, search satellite completed, TCP changed, data record changed, email alert, OEM status) to download, aiding in troubleshooting and monitoring receiver performance.
- Environmental Resilience: Designed with a rugged aluminum housing and IP67 rating, the M300 Plus is resistant to dust, water immersion, and shock, minimizing the need for frequent physical maintenance in harsh conditions.
- Power Supply Guidelines: Emphasizes the importance of an uninterruptible power supply (UPS) to protect the receiver from power surges and outages, contributing to device longevity and stable operation.
- Technical Assistance: ComNav Technology provides technical support and encourages users to contact their local dealer or support team for assistance with any questions or issues.
- Firmware Updates: Regular firmware updates are available to improve performance, add new features, and address potential issues, ensuring the receiver remains optimized over its lifespan.
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