GR-i3 specifications

The GR-i3 is a fully integrated multi-constellation receiver and antenna in a ruggedized housing. The GR-i3 can fully operate with internal batteries or through a CAN bus connection and is designed to withstand rough construction conditions. Topcon’s “Click and Lock” feature makes it easy to install and remove the integrated assembly.

Key features

Fully integrated GNSS antenna and receiver
Multi-constellation receiver
Bluetooth® or CAN bus communication
IP67

Electrical

Item	Specification
Supply Voltage	9-32 V
Supply Current	Typical current: 0.35 A at 12 V Maximum current: 0.5 A at 12 V, 0.3 A at 24 V

Physical

Item	Specification
Housing	Base - Magnesium Top Cap - PC/PBT Alloy Dogbone - 304 Stainless Steel
Housing Dimensions	3.00 in. x 5.40 in. (76.45 mm x 137.32 mm)
Connectors	9-pin Pogo connector
Weight	2.24 lbs (1.02 kg)

Environmental

Item	Specification
Operating Temperature	-40 °F to 176 °F (-40 °C to 80 °C) CAN power -13 °F to 158 °F (-25 °C to 70 °C) Wireless power -4 °F to 140 °F (-20 °C to 60 °C) Battery power
Storage Temperature	-40 °F to 176 °F (-40 °C to 80 °C)
Ingress Protection	IP67

Connector pinouts

Envelope dimensions

LED indicators

LED statuses

LED statuses
	Blinking	Off (No Light)
Power
	Green Short Blink	Running on battery
	Green Solid	Fully charged/Running on external power
	Orange Blink	Battery charging
	Red Short Blink (50 msec ON/OFF)	Low battery
	Red Blink (0.5 sec ON/OFF)	Shipping mode
	Red Short Blink (150 msec ON/OFF)	Battery problem
GPS
	Green Solid	GNSS configured, Real Time Kinematic (RTK) fixed solution
	Orange Solid	GNSS configured, RTK float solution
	Orange/Yellow Blink (0.4 sec ea.)	GNSS configuration timed out
	Red/Yellow Blink (0.4 sec ea.)	GNSS configuration failed, not due to invalid options
	Red Blink (1 sec ON/OFF)	GNSS configured, No satellites
	Red Fast Blink (0.25 sec ON/OFF)	Invalid GNSS options
	Red Solid	GNSS configured, Standalone solution
	Off	GNSS not configured after power up
CAN BUS
	Green Blink	Pre-operational
	Green Solid	Operational
	Red Blink	BUS-OFF or BUS-Heavy
	Red Double Blink	Lifeguard connection lost
Bluetooth
	Green Blink	Advertising
	Green Solid	BLE connection established
	Red Solid	Bluetooth connection established