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The Trimble R8 sets the bar for advanced GNSS surveying systems. This integrated system delivers unmatched power, accuracy and performance in a rugged, compact unit. Trimble R-track technology, Supporting a wide range of satellite signals, including GPS L2C and L5 and GLONASS L1/L2 signals, the Trimble R8 contains Trimble R-track with Signal Prediction™ technology which compensates for intermittent RTK signals, enabling extended operation after interruption. Trimble is committed to the next generation of modernized GNSS configurations by providing Galileo-compatible products available for customers well in advance of Galileo system availability. The Trimble R8 includes flexible wireless communication options connecting to the controller, receiving RTK/network corrections and connecting to the internet.
Technical specifications
| Positioning performance1 | |
| Code differential GNSS positioning | |
| Horizontal | 0.25 m + 1 ppm RMS |
| Vertical | 0.50 m+ 1 ppm RMS |
| SBAS differential positioning accuracy2 | typically<5 m 3DRMS |
| Static GNSS surveying | |
| High-Precision Static | |
| Horizontal | 3 mm + 0.1 ppm RMS |
| Vertical | 3.5 mm + 0.4 ppm RMS |
| Static and Fast Static | |
| Horizontal | 3 mm + 0.5 ppm RMS |
| Vertical | 5 mm + 0.5 ppm RMS |
| Real Time Kinematic surveying3 | |
| Single Baseline<30 km | |
| 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 |
| Initialization time4 | typically<8 seconds |
| Initialization reliability4 | typically>99.9% |
| Hardware | |
| Physical | |
| Dimensions (W×H) | 19 cm×11.2 cm (7.5 in×4.4 in), including connectors |
| Weight | 1.34 kg (2.95 lb) with internal battery, internal radio, standard UHF antenna. 3.70 kg (8.16 lb) entire RTK rover including batteries, range pole, controller and bracket |
| Temperature5 | |
| Operating | -40°c to +65°c (-40°F to +149°F) |
| Storage | -40°c to +75°c (-40°F to +167°F) |
| Humidity | 100%, condensing |
| Water/dustproof | IP67 dustproof, protected from temporary immersion to depth of 1 m (3.28 ft) |
| Shock and vibration | Tested and meets the following environmental standards: |
| Shock | Non-operating: Designed to survive a 2 m (6.6 ft) pole drop onto concrete. Operating: to 40 G,10 msec, sawtooth |
| Vibration | MIL-STD-810F, FIG.514.5C-1 |
| Electrical | |
| • Power 11 to 28 V DC external power input with over-voltage protection on Port 1 (7-pin Lemo) | |
| • Rechargeable, removable 7.4 V, 2.4 Ah Lithium-lon battery in internal battery compartment. Power consumption is 3.2 W, in RTK rover mode with internal radio. Operating times on internal battery: | |
| 450 MHz receive only option | 5.8 hours7 |
| 450 MHz receive/transmit option | 3.7 hours8 |
| GSM/GPRS | 4.1 hours7 |
• Certification Class B Part 15, 22, 24 FCC certification, 850/1900 MHz. Class 10 GSM/GPRS module. CE Mark approval, and C-tick approval | |
| Communications and Data Storage | |
| • 3-wire serial (7-pin Lemo) on Port 1. Full RS-232 serial on Port 2 (Dsub 9 pin) | |
• Fully integrated, fully sealed internal 450 MHz receiver/transmitter option: − Transmit power: 0.5 W − Range6: 3-5 km typical /10 km optimal | |
| • Fully integrated, fully sealed internal GSM/GPRS option | |
| • Fully integrated, fully sealed 2.4 GHz communications port (Bluetooth®)9 | |
| • External cellphone support for GSM/GPRS/CDPD modems for RTK and VRS operations | |
| • Data storage on 57 MB internal memory: 40.7 days of raw observables (approx. 1.4 MB/Day), based on recording every 15 seconds from an average of 14 satellites | |
| • 1 Hz, 2 Hz, 5 Hz, 10 Hz, and 20 Hz positioning | |
| • CMR+, CMRx, RTCM 2.1, RTCM 2.3, RTCM 3.0, RTCM 3.1 Input and Output | |
| • 16 NMEA outputs, GSOF, RT17 and RT27 outputs. Supports BINEX and smoothed carrier | |
Notes:
1 Accuracy and reliability may be subject to anomalies due to multipath, obstructions, satellite geometry,
and atmospheric conditions. The specifications stated recommend the use of stable mounts in an open
sky view, EMI and multipath clean environment, optimal GNSS constellation configurations, along with
the use of survey practices that are generally accepted for performing the highest-order surveys for the
applicable application including occupation times appropriate for baseline length. Baselines longer than
30 km require precise ephemeris and occupations up to 24 hours may be required to achieve the high
accuracy static specification.
2 Depends on WAAS/EGNOS system performance.
3 Network RTK PPM values are referenced to the closest physical base station.
4 May be affected by atmospheric conditions, signal multipath, obstructions and satellite geometry.
Initialization reliability is continuously monitored to ensure highest quality.
5 Receiver will operate normally to -40°c, internal batteries are rated to -20°c.
6 Varies with terriain and operating conditions.
7 Varies with temperature.
8 Varies with temperature and wireless data rate.
9 Bluetooth type approvals are country specific.
Advantages:
• Trimble R-Track technology
• Advanced Trimble Maxwell 6 Custom Survey GNSS chip with 220 channels
• High precision multiple correlator for GNSS pseudorange measurements
• Unfiltered, unsmoothed pseudorange measurements data for low noise, low multipath error, low time
domain correlation and high dynamic response
• Very low noise GNSS carrier phase measurements with <1 mm precision in a 1 Hz bandwidth
• Signal-to-Noise ratios reported in dB-Hz
• Proven Trimble low elevation tracking technology
• Satellite signals tracked simultaneously:
− GPS: L1 C/A, L2C, L2E (Trimble method for tracking L2P), L5
− GLONASS: L1 C/A, L1P, L2C/A (GLONASS M only), L2P
− SBAS: L1C/A, L5
− Galileo GIOVE-A and GIOVE-B