The Tersus David is a cost-efficient, palm-sized GNSS receiver designed for surveying UAVs, AGVs, and agricultural applications. Working with an external GNSS antenna, the free Tersus Survey App and post-processing software, the David GNSS receiver is a low-cost solution for all survey applications, including real-time RTK positioning and data collection for PPK.
4GB on board an embedded multimedia card (eMMC) makes it easy to save data for post processing. The compact size, IP67-rated enclosure and external Bluetooth module alleviates most of the inconveniences encountered in field work.
Features
Specifications
In the Box
Documents
Videos
Supports GPS L1/L2, GLONASS L1/L2, and BeiDou B1/B2
Supports 384 channels
Supports RTCM2.3/3.x, CMR, CMR+ corrections
Easy to connect an external powerful radio for long range
20Hz raw measurement output for post processing
Supports Nuwa & FieldGenius surveying software
Signal Tracking
+
GNSS
GPS L1/L2
GLONASS L1/L2
BeiDou B1/B2
Positioning
+
Single Point Positioning Accuracy (RMS)
- Horizontal
1.5m
- Vertical
2.5m
RTK (RMS)
- Horizontal
8mm + 1ppm
- Vertical
15mm + 1ppm
PPK (RMS)
- Horizontal
8mm + 1ppm
- Vertical
15mm + 1ppm
Observation
+
C/A Code (zenith direction)
10cm
P Code (zenith direction)
10cm
Carrier Phase (zenith direction)
1mm
Performance
+
Time to First Fix
- Cold Start
<50s
- Warm Start
<30s
Timing Accuracy (RMS)
20ns
Velocity Accuracy (RMS)
0.03m/s
Initialization (typical)
<10s
Initialization Reliability
>99.9%
Physical
+
Size
104 x 65 x 31mm
Weight
250g (David only)
360g (David + BT+PW/USB Cable)
Active Antenna Input Impedance
50Ω
Antenna Connector
SMA female x1
COM Baud Rate
Up to 460800bps
Operating Temperature
-40℃ ~ +85℃
Dust- & Waterproof
IP67
Electrical
+
Input Voltage
5V~12V DC
Power Consumption
4.9W (5V, David only)
Data
+
Storage
4GB on-board eMMC Card
Correction
RTCM2.3/3.x, CMR, CMR+
Max. Update Rate
20Hz
Communication
+
Serial Ports (DB-9 female)
RS232 x2
USB Port
USB 2.0 device x1
Optional Accessory
+
Battery
Battery bank
Customized battery
Software Support
+
Tersus Nuwa
MicroSurvey FieldGenius
Other Third Party Software Support NMEA-0183
Rover Kit Network Mode includes
1 x David GNSS receiver
1 x DC-2pin to USB Power Cable
1 x COMM1-Bluetooth module
1 x COMM2-7pin to USB & DB9 Cable
1 x USB Type A Female to USB (Micro+Type C) OTG cable
1 x DB9 Male to USB Type A Male converter cable
1 x AX3702 GNSS antenna
1 x GNSS antenna connector
1 x TNC-J to SMA cable 1.5m (GNSS antenna cable)
1 x height measure accessory
1 x wrench
1 x warranty card
1 x ranging pole
1 x bracket for rover
3 x magic tape
1 x carrying case
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Datasheet_David GNSS RTK Receiver
Release Date: 2021-05-13 Version:2.20
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Brochure_David GNSS Receiver
Release Date: 2021-05-13 Version:1.2
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Item List_Rover Kit Network Mode
Release Date: 2019-01-10 Version:1.2
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Quick Start Guide_David
Release Date: 2019-02-28 Version:1.0
-
User Manual_David GNSS Receiver
Release Date: 2020-07-06 Version:2.3
-
User Manual_BX Series GNSS Receiver
Release Date: 2020-04-22 Version:2.4
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User Manual_Nuwa App
Release Date: 2020-04-23 Version:1.10
-
User Manual_Tersus Geomatics Office
Release Date: 2017-10-24 Version:1.0
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Japan MIC Certificate
Release Date: 2019-04-24 Version:1.0
-
EU Declaration of Conformity_David
Release Date: 2019-07-19 Version:1.0
David Quick Start Video - David Rover Working with CORS
David Quick Start Video - 2W Radio Working Mode (Base and Rover Setup)
David Quick Start Video - Point-to-Point Working Mode
David Quick Start Video - Static Surveying
David GNSS RTK Receiver Demo Video - Waterproof Demonstration
Related Products
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Rover Kit with 2W Radio
David GNSS Receiver
Base Kit Network Mode
David GNSS Receiver
Base Kit with 2W Radio
David GNSS Receiver
Base Kit with 30W Radio
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