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Trimble R4 - Dependable When Every Point Counts
Features
Reliable 72-channel GNSS systemEverything you need to perform a basic survey campaignRugged system design and cable-free convenienceScalable from postprocessing to VRS to multi-constellation RTK configurationsPartner with Trimble Survey Controller field software and TSC2 controllerThe Trimble R4 is designed for surveyors looking for straightforward, integrated GNSS technology that performs under even the most rigorous conditions. Lightweight, ergonomic and cable-free, the Trimble R4 with Trimble Survey Controller software provides the ease of use of an integrated receiver with the rugged reliability of the popular Trimble TSC2 controller.
Technical specifications
| Positioning performance2 | |
| Code differential GNSS positioning | |
| Horizontal | 0.25 m + 1 ppm RMS |
| Vertical | 0.50 m+ 1 ppm RMS |
| SBAS differential positioning accuracy3 | 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 Surveying4 | |
| 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 time5 | typically<15 seconds |
| Initialization reliability5 | typically>99.9% |
| Hardware | |
| Physical | |
| Dimensions (W×H) | 19 cm×10.9 cm (7.5 in×4.3 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 |
| Temperature6 | |
| 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 V DC 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 hours8 |
| 450 MHz receive/transmit option | 3.7 hours9 |
| GSM/GPRS | 4.1 hours8 |
• 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 − Range7: 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®)10 | |
| • External cellphone support for GSM/GPRS/3G modems for RTK and VRS operations | |
| • Data storage on 11 MB internal memory: 302 hours of raw observables, based on recording every 15 seconds from an average of 6 satellites | |
| • 1 Hz, 2 Hz, 5 Hz, and 10 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 Optional upgrade.
2 Precision 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
precision static specification.
3 Depends on WAAS/EGNOS system performance.
4 Network RTK PPM values are referenced to the closest physical base station.
5 May be affected by atmospheric conditions, signal multipath, obstructions and satellite geometry.
Initialization reliability is continuously monitored to ensure highest quality.
6 Receiver will operate normally to -40°c, internal batteries are rated to -20°c.
7 Varies with terriain and operating conditions.
8 Varies with temperature.
9 Varies with temperature and wireless data rate.
10 Bluetooth type approvals are country specific.
Advantages:
• Trimble R-Track technology
• Advanced Trimble MaxwellTM 6 Custom Survey GNSS chip with 72 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, L2E (Trimble method for tracking L2P)
− GLONASS1: L1 C/A, L1P, L2C/A (GLONASS M only), L2P
− SBAS: L1C/A