
- GNSS (GPS + Glonass) 72 channel RTK Satellite Receiver
- GSM and CDMA Internal Cellular
- 806MHz XScale Processor
- Windows Mobile® 6.1 Operating System
- 2.0 megapixel Camera
- 256MB SDRAM, 1GB Flash
- Internal Magnetic Compass
- Built-in Bluetooth® wireless technology and Wireless LAN connectivity
Built-in 2.0 Megapixel Camera

That's right, the GRS-1 comes with a 2.0 megapixel camera with autofocus for taking pictures. Store photos on-board with the 1GB of Flash memory or use the external SD card slot for additional memory.
Internal Magnetic Compass

Utilizing compass bearing with GNSS positioning, the magnetic compass allows for additional measurements to be taken from a single location.
Extra Memory

With 1GB Flash standard, the GRS-1 is loaded with memory. But if you need more, the SD card slot and the mini USB Host functionality can provide additional memory. Use the USB mini port as both a Host and Client. This functionality allows for expanded memory and easy file transfer through USB flash drives or SD memory card.
Expansion Connector

Weather proof expansion port allows for the addition of the RH-1 unit. The RH-1 will allow the GRS-1 to communicate with radio based base stations for RTK operation. It is compatible with all previous radio types that are currently in use with Topcon GNSS systems.
This includes Digital UHF, Spread spectrum, and FCS enabled UHF radios from all previous Topcon systems.
Bluetooth® and Wireless LAN

Built-in Bluetooth wireless technology and Wireless LAN connectivity come standard. No need for expensive upgrades or CF cards. Use your device in a typical Hotspot to surf the web, check weather or e-mail files back to the office. When not in use, Topcon also provides a way to turn Bluetooth and Wireless LAN off to conserve battery power.
TopSURV Onboard

- Large Graphical User Interface (GUI)
- Intuitive User Interface
- Graphical Stakeout
- Map View Data Collection
- Fast Job Management and Storage
- Integrated Camera Function
Post-Processing Office Software

Topcon Tools provides a powerful post-processing, network analysis and adjustment solution with an intuitive operator interface that's easy to learn and use. Sort data by a variety of field such as point name, antenna height, vector length, and RMS values.
Survey Master is a powerful CAD solution from Topcon! Improve the efficiency of your data management. Draft TopSURV 7 field data into a finished product from SurveyMaster software.
GRS-1 Specifications
| Number of Channels | 72 GPS + Glonass L1/L2 tracking |
|---|---|
| DGPS Accuracy | <1m* HRMS |
| L1, L2 Static |
H: RMS 3mm + 0.8ppm V: RMS 4mm + 1.0ppm |
| Real time RTK Accuracy |
H: 10mm + 1.0ppm V: 15mm + 1.0ppm |
| WAAS/EGNOS | Yes |
| CORS Beacon | Yes with BR-1 |
| Onboard Software | TopSURV |
| Office Software (post processing) | Topcon Tools™, SurveyMaster |
| Microprocessor | XScale PXA320 |
| Processor Speed | 806MHz |
| Operating System | Windows Mobile®6.1 |
| Memory | 256MB SDRAM1GB Flash |
| Data Update Rate | Up to 100Hz |
| Interface | |
| USB | Mini Port |
| Card Slot | SD |
| GNSS Receiver | GPS + GLONASS |
| Cellular Capability | Internal GSM or CDMA |
| Input/Output | Bluetooth®, USB, Serial, ANT, and Power |
| Wireless LAN Connectivity | Standard (Internal, 802.11.b) |
| Display | 3.7" VGA LCD |
| Built-in Camera | 2.0 Megapixel |
| Keyboard | 3 Key plus Virtual Keyboard |
| Magnetic Compass | Internal, 4 degree accuracy |
| Expansion Connector | Weatherproof Communication Port |
| Battery Life | 5 hrs while in GPS static mode |
| Battery Type | 2500mAh Removable, Li-Ion Rechargeable |
| Dimensions | 7.76" x 3.54" x 1.81" (197 x 90 x 46mm) |
| Weight | 1.5 lbs (0.7kg) |
| Environmental |
IP66, 1 meter drop-20° to 50℃ Operating Temperature-10° to 50℃ Operating with camera-30° to 60℃ Storage Temperature |
* <50cm with external antenna

















