CHCNAV i73 Plus User manual

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CHCNAV i73+ GNSS
USER GUIDE
Revision 1.0
June 01, 2018
Survey & Engineering | March 2022

Table of Content
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Table of Content
Table of Content...............................................................................................................2
Preface ............................................................................................................................5
Copyright ........................................................................................................................... 5
Safety Warnings................................................................................................................. 5
FCC Interference Statement .............................................................................................. 5
CE Interference Statement ................................................................................................ 6
1Introduction..............................................................................................................7
1.1 Safety Information....................................................................................................... 7
1.1.1 Warnings and Cautions..................................................................................... 7
1.2 Regulations and Safety ................................................................................................ 7
1.2.1 Use and Care..................................................................................................... 8
1.3 Technical Support ........................................................................................................ 8
1.4 Disclaimer.................................................................................................................... 8
1.5 Your Comments ........................................................................................................... 8
2Getting Started with i73+...........................................................................................9
2.1 About the Receiver...................................................................................................... 9
2.2 Parts of the Receiver.................................................................................................... 9
2.2.1 Front Panel........................................................................................................ 9
2.2.2 Receiver Ports................................................................................................. 11
2.3 Batteries and Power .................................................................................................. 12
2.3.1 Built-in batteries ............................................................................................. 12
2.3.2 Charging the Battery....................................................................................... 12
2.3.3 Battery Safe .................................................................................................... 12
2.3.4 External Power Supply.................................................................................... 13
2.4 Product Basic Supply Accessories.............................................................................. 14
2.4.1 Rover Kit Basic Supply..................................................................................... 14
2.4.2 Base Kit Basic Supply ...................................................................................... 15
2.5 Connecting to an Office Computer............................................................................ 17
2.6 Connecting to a Controller ........................................................................................ 17
2.6.1 Connecting via Wi-Fi with LandStar 7 Software ............................................. 17
2.6.2 Connecting via Bluetooth with LandStar 7 Software...................................... 20
2.7 Downloading Logged Data......................................................................................... 22
2.7.1 FTP Download................................................................................................. 22
2.7.2 Web Server Download.................................................................................... 24

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2.7.3 USB Download................................................................................................ 24
3Equipment Setup and Operation.............................................................................. 26
3.1 Post-processing Base Station Setup........................................................................... 26
3.2 Real-Time Rover Station Setup.................................................................................. 28
3.3 Working with the Tilt Compensation......................................................................... 29
3.3.1 Operation Steps.............................................................................................. 29
3.3.2 Notes of using tilt measurement.................................................................... 31
4Configuring Through a Web Browser........................................................................ 33
5.1 Status Menu............................................................................................................... 34
5.1.1 Position Submenu........................................................................................... 35
5.1.2 Activity Submenu............................................................................................ 35
5.1.3 Google Map Submenu.................................................................................... 35
5.2 Satellites Menu.......................................................................................................... 36
5.2.1 Tracking Table Submenu................................................................................. 36
5.2.2 Tracking Info. Table Submenu......................................................................... 37
5.2.3 Tracking Skyplot Submenu.............................................................................. 37
5.2.4 Satellite Activation Submenu.......................................................................... 38
5.3 Receiver Configuration Menu.................................................................................... 39
5.3.1 Description ..................................................................................................... 39
5.3.2 Antenna Configuration Submenu................................................................... 39
5.3.4 Receiver Reset Submenu................................................................................ 41
5.3.5 Languages Submenu....................................................................................... 41
5.3.6 User Management Submenu.......................................................................... 42
5.3.7 USB Function Switch....................................................................................... 42
5.3.8 HCPPP Settings ............................................................................................... 49
5.4 Data Recording Menu................................................................................................ 49
5.4.1 Log Settings Submenu .................................................................................... 49
5.4.2 FTP Push Settings Submenu ........................................................................... 52
5.4.3 FTP Push Log Submenu................................................................................... 53
5.4.4 Data Download Submenu............................................................................... 53
5.5 IO Settings Menu....................................................................................................... 55
5.5.1 IO Settings Submenu ...................................................................................... 55
5.6 Module Setting Menu................................................................................................ 63
5.6.1 Description Submenu ..................................................................................... 63
5.6.2 WiFi Submenu ................................................................................................ 63
5.6.3 Bluetooth Settings Submenu.......................................................................... 64
5.6.4 Radio Settings Submenu................................................................................. 64
5.7 Firmware Menu ......................................................................................................... 65

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5.7.1 Firmware Info Submenu ................................................................................. 66
5.7.2 Hardware Version Submenu........................................................................... 66
5.7.3 Config File Submenu....................................................................................... 66
5.7.4 System Log Download Submenu .................................................................... 66
5.7.5 User Log Submenu.......................................................................................... 67
5.7.6 Firmware Update Submenu............................................................................ 67
5.7.7 GNSS Board Upgrade Submenu...................................................................... 68
5.7.8 GNSS Registration Submenu........................................................................... 69

Preface
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Preface
Copyright
Copyright 2018-2022
CHCNAV | Shanghai Huace Navigation Technology Ltd. All rights reserved. The CHCNAV is
trademark of Shanghai Huace Navigation Technology Limited. All other trademarks are the
property of their respective owners.
Trademarks
All product and brand names mentioned in this publication are trademarks of their
respective holders.
Safety Warnings
The Global Positioning System (GPS) is operated by the U.S. Government, which is solely
responsible for the accuracy and maintenance of the GPS network. Accuracy can also be
affected by poor satellite geometry and obstructions, like buildings and heavy canopy.
FCC Interference Statement
This equipment has been designed to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules in the Portable Mode. These limits are designed to
provide reasonable protection against harmful interference in a residential installation.
Operation is subject to the following two conditions: (1) this device may not cause harmful
interference and (2) this device must accept any interference received, including interference
that may cause undesired operation.

Preface
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CE Interference Statement
Declaration of Conformity: Hereby, Shanghai Huace Navigation Technology Ltd. declares that
this i73+ is in compliance with the essential requirements and other relevant provisions of
Directive 2014/53/EU. A copy of the Declaration of conformity can be found at Shanghai
Huace Navigation Technology Ltd.

Introduction
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1 Introduction
The i73+ GNSS receiver removes barriers to portability without sacrificing performance.
Featuring full GNSS technology, it offers best-in-class GNSS signal tracking even in a harsh
environment, enabling GNSS surveying beyond usual constraints. The i73+ GNSS incorporates
the latest innovations such as an inertial module (IMU) providing automatic pole-tilt
compensation in a very compact design.
1.1 Safety Information
1.1.1 Warnings and Cautions
An absence of specific alerts does not mean that there are no safety risks involved.
A Warning or Caution information is intended to minimize the risk of personal injury and/or
damage to the equipment.
WARNING - A Warning alerts you to a potential misused or wrong setting of the
equipment.
CAUTION - A Caution alerts you to a possible risk of serious injury to your person
and/or damage to the equipment.
1.2 Regulations and Safety
The receivers contain a built-in wireless modem for signal communication through
Bluetooth® wireless technology or through external communication datalink. Regulations
regarding the use of the wireless modem vary greatly from country to country. In some
countries, the unit can be used without obtaining an end-user license. However, in some
countries, the administrative permissions are required. For license information, consult your
local dealer. Bluetooth® operates in license-free bands.
Before operating a i73+ GNSS receiver, determine if authorization or a license to operate the
unit is required in your country. It is the responsibility of the end-user to obtain an operator's
permit or license for the receiver for the location or country of use.

Introduction
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1.2.1 Use and Care
This receiver is designed to withstand the rough environment that typically occurs in the field.
However, the receiver is high-precision electronic equipment and should be treated with
reasonable care.
CAUTION - Operating or storing the receiver outside the specified temperature range
will cause irreversible damage.
1.3 Technical Support
If you have a problem and cannot find the information you need in this manual or CHCNAV
website (www.chcnav.com), contact your local CHCNAV dealer from which you purchased
the receiver(s).
If you need to contact CHCNAV technical support, please contact us by email
([e-mail]) or Skype (chc_support).
1.4 Disclaimer
Before using the receiver, please make sure that you have read and understood this User
Guide, as well as the safety information. CHCNAV holds no responsibility for the wrong
operation by users and for the losses incurred by the wrong understanding about this User
Guide. However, CHCNAV reserves the rights to update and optimize the contents in this
guide regularly. Please contact your local CHCNAV dealer for new information.
1.5 Your Comments
Your feedback about this user guide will help us to improve it in future revision. Please email
your comments to [e-mail].

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2 Getting Started with i73+
2.1 About the Receiver
The new CHCNAV i73+ GNSS receiver offers integrated IMU-RTK technology to provide a
robust and accurate GNSS positioning in any circumstances. Unlike the standard MEMS
based GNSS receivers, the i73+ GNSS IMU-RTK combines state-of-the-art GNSS RTK engine,
calibration-free professional IMU sensor and advanced GNSS tracking capabilities. Survey
projects are achieved with high productivity and reliability pushing the boundaries of
conventional GNSS RTK survey.
The receiver can be used as the part of an RTK GNSS system with CHCNAV LandStar7
software. Moreover, user can download the GNSS data that recorded in the internal memory
of receiver to a computer.
To configure the receiver for performing a wide variety of functions, you can use the web
interface by connecting the receiver with PC or smartphone through Wi-Fi.
2.2 Parts of the Receiver
The operating controls are all located on the front panel. Serial ports and connectors are
located on the bottom of the unit.
2.2.1 Front Panel
The following figure shows a front view of the receiver.
Front panel

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The front panel contains four indicator LEDs and two buttons.
Name
Description
Correction LED (Green)
•Indicates whether the receiver is
transmitting/receiving differential data.
•The green LED flashes once per second when
As a Base station: successfully transmitting
differential data.
As a Rover station: successfully receiving
differential data from Base station.
Satellite LED (Blue)
•Shows the number of satellites that the receiver
has tracked.
•When the receiver is searching satellites, the blue
LED flashes once every 5 seconds.
•When the receiver has tracked N satellites, the blue
LED will flash N times every 5 seconds.
Function button (Yellow)
•Press and hold this button for 10 seconds to turn on
or turn off the static mode.
•Flash means static is on.
Power button (Red)
•Works as a Power button:
•Press and hold this button for 3 seconds to turn on
or turn off the receiver.
•Hold Fn button and press this button for 5 times
continuously to reset the mainboard.
Satellite LED
Function button
Power button
Correction LED

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2.2.2 Receiver Ports
The receiver ports contain one TNC radio antenna connector, one communication and power
ports, one 5/8-11 threaded insert, and one nameplate.
Port
Name
Description
USB Type-C
port
•This port is a USB Type-C connector that
supports USB communications.
•Users can use USB Type-C Cable supplied with
the system to download the logged data to a
computer.
Radio antenna
connector
•Connect a radio antenna to internal radio of
the receiver. And this connector is not used if
you are using an external radio.
USB communication
and power in port
5/8-11 threaded
insert
TNC radio
antenna connector

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2.3 Batteries and Power
2.3.1 Built-in batteries
The receiver has two built-in 6800 mAh rechargeable Lithium-ion batteries.
2.3.2 Charging the Battery
The rechargeable Lithium-ion battery is supplied partially charged. Charge the battery
completely before using it for the first time. Charge via USB Type-C port.
WARNING –Charge and use the rechargeable Lithium-ion battery only in strict
accordance with the instructions. Charging or using the battery in unauthorized
equipment can cause an explosion or fire and can result in personal injury and/or
equipment damage.
To prevent injury or damage:
▪Do not charge or use the battery if it appears to be damaged or leaking.
▪Charge the Lithium-ion battery only in a CHCNAV product that is specified to charge it. Be
sure to follow all instructions that are provided with the battery charger.
▪Discontinue charging a battery that gives off extreme heat or a burning odor.
▪Use the battery only in CHCNAV equipment that is specified to use it.
▪Use the battery only for its intended use and according to the instructions in the product
documentation.
2.3.3 Battery Safe
WARNING –Do not damage the rechargeable Lithium-ion battery. A damaged battery
can cause an explosion or fire and can result in personal injury and/or property
damage.
To prevent injury or damage:
▪Do not expose the battery to fire, high temperature, or direct sunlight.
▪Do not immerse the battery in water.
▪Do not drop or puncture the battery.

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2.3.4 External Power Supply
Provide the external power to the receiver by the USB Type-C Cable + Power Adapter.
The Power Adapter is connecting with AC power of 100-240V, the output port of the Power
Adapter connects with the USB Type-C Cable.

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2.4 Product Basic Supply Accessories
2.4.1 Rover Kit Basic Supply
Item
Picture
I73+ GNSS Receiver
UHF Bar Antenna (410-470 MHz)
USB Type-C Cable
2M Range Pole w/bag
Auxiliary H.I. Tool
Power Adapter.
Transport Hard Case

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2.4.2 Base Kit Basic Supply
Item
Picture
i73+ GNSS Receiver
UHF Bar Antenna (410-470 MHz)
USB Type-C Cable
Tribrach adaptor
Extension Pole(30cm)
Auxiliary H.I. Tool
H.I. Tape
Tribrach
Power Adapter.
Datalink Power Cable (5-pin)

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Transport Hard Case

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2.5 Connecting to an Office Computer
The receiver can be connected to an office computer via a HCE320 USB Type-C. Before you
connect to the office computer, ensure that the receiver is powered on.
The following figure shows how to connect to the computer for serial data transfer or
settings:
2.6 Connecting to a Controller
2.6.1 Connecting via Wi-Fi with LandStar 7 Software
Turn on the controller → run LandStar 7 → go to Config main menu →tap Connect.
In the Connect screen, select CHC for the Manufacture field, i73+ for Device Type field, WIFI
for Connection Type field.
USB Type-C

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Tap the Wireless Lan icon on the right side to select the hot spot → Switch on the WiFi
module by the top switch →select the target device in the list.

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Tap Connect to link to the hot spot. If the first-time connection to this hot spot, user do not
need to type in password
Tap the Connect button to build the connection.

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2.6.2 Connecting via Bluetooth with LandStar 7 Software
Turn on the controller → run LandStar 7 → go to Config main menu →tap Connect.
In the Connect screen, select CHC for the Manufacture field, i73+ for Device Type field,
Bluetooth for Connection Type field.
Tap the Bluetooth Manager and turn on the Bluetooth function to search Bluetooth device
around → select the target device in the list → Tap back button → select the target device in
the Bluetooth manager list.