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| Brand Name : | TERSUS |
| Model Number : | David Plus |
| Certification : | CE |
| Payment Terms : | Western Union, T/T, MoneyGram |
| Supply Ability : | 10000 per year |
| Delivery Time : | 3-5work days after the goods are paid |



OVERVIEW:
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.
A 4GB in-built memory makes it easy to record data for post
processing. The compact size, IP67-rated enclosure, and external
Bluetooth module alleviates most of the inconveniences encountered
in field work.
| Key Features | |
| Supports multiple constellations & frequencies: | |
-GPS L1, L2 -GLONASS L1, L2 -BeiDou B1, B2 | |
| Supports 384 channels | |
| Supports RTCM2.3/3.x, CMR, CMR+ corrections | |
| Easy to connect an external powerful radio for long range communication | |
| Flexible for integration in different applications | |
| 20Hz raw measurement output for post processing | |
| The carrier phase accuracy down to 1mm | |
| In-built 4GB eMMC for data recording | |
| Input power range is 5~12V DC | |
| IP67-rated dust- & waterproof enclosure, for reliability in harsh environmental conditions | |
| Supports Nuwa & FieldGenius surveying software | |
Performance | |
| Signal Tracking For Antenna: | GPS L1, L2; GLONASS L1, L2; BeiDou B1, B2 |
| 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 |
| 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% |
| Max. Measurements Update Rate: | 20Hz |
| Input Voltage: | 5V~12V DC1 |
| Power Consumption (at 25ºC ): | 3.2W (David only) |
| Active Antenna Input Impedance: | 50Ω |
| Storage: | In-built 4GB memory |
| Communication | |
| Serial Ports: | RS232 x2 |
| USB Ports: | USB 2.0 device x1 |
| Antenna Connector: | SMA female x1 |
| COM Baud Rate: | COM Baud Rate: |
| Software Support | |
Tersus Nuwa MicroSurvey FieldGenius Other Third Party Software Support NMEA-0183 | |
| Physical | |
| Dimension: | 104x65x31mm (David only) |
| Weight: | ≈ 250g (David only |
| Operating Temperature: | -40ºC ~ +85ºC |
| Dust- & Waterproof: | IP67 |
| Optional Accessories | |
| 2W 460MHz/30W 460MHz radio to transmit/receive RTK corrections | |
| Battery bank | |
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