Leica GS18 User Manual

Appendix A Pin Assignments and Sockets
Some applications require knowledge of the pin assignments for the instru-
ment ports.
In this chapter, the pin assignments and sockets for the instrument ports are
explained.
1
7
6
8
5
4
3
2
PIN_001
Pin Signal
Name
Function Direction
1 USB_D+ USB data line In or out
2 USB_D− USB data line In or out
3 GND Signal ground -
4 RxD RS232, receive data In
5 TxD RS232, transmit data Out
6 ID Identication pin In or out
7 PWR Power input, 10.5 V-28 V In
8 GPIO RS232, general-purpose signal In or out
Description
Pin assignments for
port P1
Pin Assignments and Sockets 61

Leica GS18 Specifications

General

Type	GNSS RTK Rover
GNSS Signals	GPS, GLONASS, Galileo, BeiDou, QZSS, SBAS
Tilt Compensation	Yes
Frequency Bands	L1, L2, L5
RTK Accuracy Horizontal	8 mm + 1 ppm
RTK Accuracy Vertical	15 mm + 1 ppm
Data Storage	Internal memory
Communication	Bluetooth
Power	Internal Li-Ion battery
Positioning Accuracy Static Vertical	5 mm + 0.5 ppm