GRX2 GNSS Receiver

The GRX2 receiver is a fully integrated dual constellation receiver, antenna, radio, and optional cellular modem. In addition, the integrated Bluetooth® module, now enhanced for better performance, is designed into a rugged magnesium alloy body.

Fully Scalable Architecture

The GRX2 can be purchased as a single frequency GPS only receiver at a low cost and later upgraded to dual frequency. Add a radio or cellular modem for additional signal capability for GLONASS.

226 Channels for GPS and GLONASS Signals

• 226 tracking channels with Universal Tracking Technology

• Programmable channels for tracking available signals

•  Supports SBAS, QZSS, and QLL

Triple Wireless Technologies Inside

 Three commonly-used wireless technologies can be integrated into the GRX2 receiver.

• Digital UHF modem (receiver/transmitter): for RTK base and rover

• GSM/HSPA modem: for network RTK, and MAGNET® Relay

• Bluetooth® modem: for controller and other PC

Maximum Versatility in RTK Applications

Utilizing full wireless connectivity and voice navigation system, the GRX2 facilitates the use of both RTK and network RTK technologies.

• Built-in GSM/HSPA modem makes the GRX2 an ideal rover receiver for network RTK positioning.

• Can be used for both private RTK base and RTK rover using an internal digital UHF modem without any extra devices.

• MAGNET Relay ready – cellular to cellular base/rover RTK.

• Voice messages notify the users when RTK is fixed or lost, or if other problems occur

Additional Hardware Features

 22 status LED displays are exceptionally readable even under bright sunlight.

• Data storage on popular SD/SDHC cards.

• IP67 dust/water protection.

• One removable battery powers the receiver for up to 6 hours in RTK usage with UHF radio communication.

• The BDC70 Li-ion battery can be used in other Sokkia total stations and digital levels.

Data Collectors

The GRX2 has built-in internal Bluetooth® capability that allows the user to choose their data collector model and software. The broad capability design allows users more choices for their preferred style of data collector. Whether it is a small palm-sized screen only device, a larger screen handheld, or even a field laptop, the GRX2 is ready to connect.

MAGNET® Field

MAGNET Field provides a bright, graphical user interface with large touch icons and bright readable text. Select your color scheme black, gold, blue, or silver, for your best visibility.

SOKKIA GRX2 GNSS Receiver

Specification

Tracking Capability

Number of Channels*1

226 channels

Tracked Signals

GPS

L1, L2, L2C

GLONASS

L1, L2, L2C

SBAS

WAAS, EGNOS, MSAS, QZSS

Antenna

Integrated

Positioning Accuracy*2

Static

L1 + L2

H: 3mm + 0.5ppm V: 5mm + 0.5ppm

L1 Only

H: 3mm + 0.8ppm V: 4mm + 1ppm

Fast static (L1 + L2)

H: 3mm + 0.5ppm V: 5mm + 0.5ppm

Kinematic (L1 + L2)

H: 10mm + 1ppm V: 15mm + 1ppm

RTK (L1 + L2)

H: 10mm + 1ppm V: 15mm + 1ppm

DGPS

< 0.5m

User Interface

Operation

Single-button operation for power, receiver reset, memory initialization

Display panel

22 LED status indicators

Voice navigation

Multi-lingual voice messages for receiver status information

Data Management

Memory

SD/SDHC card (FAT16/32 formats)

Update/output rate*3

1Hz, 5Hz, 10Hz, 20Hz (10Hz RTK Standard)

Communication Ports

RS-232C (4,800 to 115,200bps)

Wireless Communication

Bluetooth® modem

V2.1 + EDR, Class 2, 115,200bps*4

Digital UHF II modem*4

Internal, receiver (RX) and transmitter (TX), 410 to 470MHz

GSM/HSPA modem*4

Internal

Environmental

Dust/Water Protection

IP67 (IEC 60529:2001) at closing all connector caps.

Protected against temporary immersion up to 1m (3.3 ft.) depth.

Shock

2m (6.56 ft.) pole drop

Operating Temperature

GRX2 receiver

-40 to 65°C (-40 to 149°F)

BDC70 battery

-20 to 65°C (-4 to 149°F)

UHF/GSM modems

-20 to 55°C (-4 to 131°F)

Storage Temperature

-45 to 70°C (-49 to 158°F)

Humidity

100 , condensing

Physical

Enclosure

Magnesium alloy housing

Size (w x h)

184 x 95mm (7.24 x 3.74 in.)

Weight

(GRX2 receiver / BDC70 battery)

1.0 kg (2.20 lb.) / 195 g (6.9 oz.)

Power Supply

Standard battery BDC70

Detachable, Li-ion battery, 7.2V, 5240 mAh

Operating time at 20°C (68°F)

>7.5 hours in static mode w/Bluetooth® connection

Charger CDC68

Recharging time

Approx. 4 hours at 25°C (77°F)

Input voltage

100 to 240V AC (50/60Hz)*5

External power

6.7 to 18V DC