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David Plus GNSS Receiver
Dual-Antenna for Precise Position and Heading
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The Tersus David Plus is a dual-antenna GNSS receiver which offers centimeter-accurate positioning and heading. It is designed for intelligent transportation, construction, machine control, precision agriculture, and navigation applications.
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The David Plus GNSS receiver is built for outdoor environments with IP67-rated enclosure. The compact palm size makes it easy to integrate with various application systems. A 4GB in-built memory is to record data for post-processing conveniently.


Features
Specifications
Documents
Videos
Supports measurements output – GPS L1/L2, GLONASS L1/L2, BeiDou B1/B2 from primary antenna – GPS L1/GLONASS L1 or GPS L1/BeiDou B1 from secondary antenna
Supports RTK positioning mode or RTK positioning + heading mode
Supports 384 channels
Supports RTCM2.3/3.x, CMR, CMR+ corrections
Easy to connect an external powerful radio for long range communication
RTK and Heading solution update rate up to 20Hz
Performance
+
Signal Tracking for Primary Antenna
GPS L1/L2, GLONASS L1/L2, BeiDou B1/B2
Signal Tracking for Secondary Antenna
GPS L1+GLONASS L1 or GPS L1+BeiDou B1
GNSS Channels
384
Single Point Positioning Accuracy (RMS):
– Horizontal
1.5m
– Vertical
3.0m
Real Time Kinematic (RMS):
– Horizontal
10mm+1ppm
– Vertical
15mm+1ppm
Post Processed Kinematic (RMS):
– Horizontal
10mm+1ppm
– Vertical
15mm+1ppm
Static Post Processing (RMS):
– Horizontal
3mm+0.5ppm
– Vertical
5mm+0.5ppm
Observation Accuracy (zenith direction):
– C/A Code
10cm
– P Code
10cm
– Carrier Phase
1mm
Heading Accuracy:
– 1m Baseline (RMS)
0.15°
Time To First Fix (TTFF):
– Cold Start
<50s
– Warm Start
<30s
Timing Accuracy (RMS)
20ns
Velocity Accuracy (RMS)
0.03m/s
Initialization (typical)
<10s
Initialization Reliability
>99.9%
Correction
RTCM 2.x/3.x/CMR/CMR+
Max. Measurements Update Rate
20Hz
Input Voltage
5V~28V DC
Power Consumption (at 25℃ )
4.2W (David+ only)
Active Antenna Input Impedance
50Ω
Storage
In-built 4GB memory
Communication
+
Serial Ports
RS232 x2
USB Ports
USB 2.0 device x1
CAN Ports
ISO/DIS 11898 x1*
PPS Ports
LVTTL x1
Event Mark
LVTTL x1
Antenna Connector
SMA female x2
COM Baud Rate
Up to 460800bps
Data Output
NMEA-0183 and Tersus Binary format
* This port’s function is related to firmware version.
Physical
+
Dimension
104x65x31mm (David+ only)
Weight
≈ 260g (David+ only)
Operating Temperature
-40℃ ~ +85℃
Dust- & Waterproof:
IP67
Optional Accessory
+
2W 460MHz/30W 460MHz radio to transmit/receive RTK corrections
AX3702 GNSS Antenna / AX3703 Mini GNSS Antenna
Ntrip Modem TR600
Software Support
+
Tersus Nuwa
MicroSurvey FieldGenius
Other Third Party Software Support NMEA-0183
  • David Plus GNSS Receiver Datasheet
    Release Date: 2019-03-25 Version:1.0
  • Item List - David Plus GNSS Receiver
    Release Date: 2019-06-20 Version:1.2
  • David Plus_CE/FCC
    Release Date: 2019-06-24 Version:1.0
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