Topcon GR-5 Quick Start Manual

POSITIONING SYSTEMS

For more information contact Synergy Positioning Systems or
visit the Synergy Positioning Systems website at www.synergypositioning.co.nz
All branches: Phone [phone] Email: [e-mail]

GR-5

Quick Start Guide

Part Number 7010-1022

Rev A

©Copyright Topcon Positioning Systems, Inc.

August, 2011

All contents in this manual are copyrighted by

Topcon Positioning Systems, Inc.

All rights reserved.

This quick start guide tells you how to

get started using the GR-5 receiver.

Terms and Conditions

Thank you for buying this Topcon product. This manual has been
prepared to assist you with the care and operation of the product and
its use is subject to these Terms and Conditions and those more fully
set forth in the Operator’s/User’s Manual.

Usage and Safety

This product is designed for use by professionals. Always use safety
precautions when operating this or any Topcon product.

Copyrights and Trademarks

The information in this manual is a copyright of Topcon and is for use
only with the product. GR-5, TRU, TopSURV, Topcon Link, Topcon
Tools, and Topcon are trademarks or registered trademark of Topcon
Positioning Systems, Inc. Windows and the Windows CE icon are
registered trademarks of Microsoft Corporation.

Other product and company names mentioned herein may be
trademarks of their respective owners.

Disclaimer of Warranty and License
Agreement

Please see the Operator’s/User’s Manual for detailed information on
warranties and the license agreement which may apply to the Product.

EXCEPT FOR SUCH WARRANTIES AND LICENSES PROVIDED WITH

THE PRODUCT, THIS MANUAL AND THE PRODUCT ARE PROVIDED

“AS-IS”. T

FOR TECHNICAL OR EDITORIAL ERRORS OR OMISSIONS CONTAINED
HEREIN; NOR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES
RESULTING FROM THE FURNISHING, PERFORMANCE OR USE OF THIS
MATERIAL OR THE PRODUCT.

Use of any computer programs or software supplied by Topcon or
downloaded from the Topcon website in connection with the Product
implies acceptance of the Terms and Conditions here and in the
Operator’s/User’s Manual.

OPCON AND ITS DISTRIBUTORS SHALL NOT BE LIABLE

ECO#4187

Table of Contents

Introduction .............................................1

Chapter Descriptions ...........................................1

Where to Find More Information ........................2

Getting to Know Your GR-5 ...............................3

MINTER .......................................................3

Data and Power Ports ....................................9

Radio Antenna and Pole Connectors ............11

SDHC and SIM Card Slots ...........................11

Default Configuration ..........................................13

Accessories ..........................................................16

Getting Started ........................................21

Installing Software ...............................................21

Installing PC-CDU ........................................22

Installing TRU ..............................................22

Turning On/Off the Receiver ...............................23

Installing the SDHC Card ....................................23

Installing the SIM Card .......................................24

Installing the Batteries .........................................25

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Contents

Attaching the Batteries ..................................25

Detaching the Batteries .................................27

Charging the Batteries .........................................27

Charging with the Power Supply Unit ..........28

Charging with the Battery Charging Cradle .29

Charging Temperatures .................................29

Estimated Operating Times ................................30

Connecting the GR-5 with a Control Device ......31

Establishing an RS232 Cable Connection ...........32

Surveying ................................................ 35

Post-Processing Survey .......................................35

Step 1: Set up the GR-5 Base ........................35

Step 2: Set up the GR-5 Rover ......................37

Step 3: Measure Antenna Height (for Base and

Rover) ........................................................38

Step 4: Collect Data (for Base and Rover) ....39

Amount of Memory Required to Store a One

Hour File ..................................................41

RTK Survey .........................................................42

Step 1: Repeat Steps 1 through 3 in “Post-

Processing Survey” on page 35 .................42

Step 2: Connect a Hand-Held Controller ......42

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Step 3: Start Surveying with TopSURV .......42

Topcon GR-5 Quick Reference Guide

Contents

Downloading Files ..................................45

Downloading Files via Topcon Link ...................45

...Using Windows Explorer ...........................45

...Using Topcon Link ....................................47

Downloading Files Using TRU ...........................48

Maintenance ............................................49

Restoring Default Settings ...................................49

Performing Hardware Reset ................................49

Clearing the NVRAM ..........................................50

Initializing File System ........................................51

Managing Receiver Options ................................51

Checking the Receiver’s OAF using TRU ....52

Loading an OAF using TRU .........................52

Deleting Files from the Internal Memory Card ...53

Recovering Deleted Files ....................................53

Activating Sleep Mode ........................................54

Loading New Firmware .......................................55

Troubleshooting .....................................65

Check This First! .................................................65

TX RX LED Blink Pattern on Error Conditions .66

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Contents

Obtaining Technical Support ...............................68

End-users .......................................................68

Dealers (in the U.S., Canada, Australia) .......68

Help Desk 68
Phone 68
Email 69

Dealers (International) ..................................69

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Topcon GR-5 Quick Reference Guide

Chapter 1

Introduction

This quick start guide focuses on how to get your GR-5 up
and running quickly without overwhelming you with
technical details.

Chapter Descriptions

• Chapter 1: Introduction (this chapter)

Understand the GR-5 parts and features, default
configuration, and accessories available for your GR-5
receiver.

• Chapter 2: Getting Started

Explore preliminary steps to get your GR-5 ready for
surveying.

• Chapter 3: Survey

Learn the basic survey procedures.

• Chapter 4: Downloading Files

Transfer field data to your post-processing software.

• Chapter 5: Maintenance

Help you use the GR-5 productively and safely.

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Introduction

• Chapter 5: Troubleshooting

Provide tips and solutions for potential problems during
GR-5 operation.

Where to Find More Information

• For detailed information regarding features, capabilities,
and software introduced with this receiver, refer to the
GR-5 Operator’s Manual (7010-1004).

• For the quick guide about GR-5 cellular modem, refer to
the GR-5 Cellular Modem Quick Start Card
(7010-1013).

• Visit Topcon University at www.topconuniversity.com
for webinars and training opportunities. The TU website
also provides you with access to software and firmware,
manuals, and more to help you maximize your technical
and industry knowledge and skills.

2

Topcon GR-5 Quick Start Guide

Getting to Know Your GR-5

FUNCTION

FUNCTION

Battery

STAT

REC RX TX

BT

Power

Button

FUNCTION

Button

Battery

Getting to Know Your GR-5

MINTER

The MINTER is the receiver’s minimum interface used to
display and control data input and output.

The battery LEDs display the power status for each

battery:

• Green – indicates greater than 85% charge.

• Orange – indicates an intermediate charge.

• Red – indicates less than 15% charge.

The STAT LED displays the status of tracked satellites.

• Red blink – receiver is on, but no satellites being
tracked.

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Introduction

• Green blink – receiver is on and tracking satellites; one
blink per tracked GPS satellite.

• Orange blink – receiver is on and tracking satellites; one
blink per tracked GLONASS satellite.

The REC LED displays the data recording status.

• Green blinks – each blink indicates that data is being
written to the SDHC card.

• Solid Orange – the receiver is changing modes.

• Orange blinks – the receiver is checking its internal file
system. During this operation, the file system is not
accessible for CDU (control display unit) applications
or for data recording. This operation may require from
fractions of a second to several minutes, depending on
the circumstances and the amount of internal memory.

• Solid Red – a fault condition with the receiver (no more
memory, no SDHC card inserted, a hardware problem,
or an improper OAF).

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Topcon GR-5 Quick Start Guide

Getting to Know Your GR-5

The RX TX LED displays the status of the modem.

Table 1-1 describes the LED colors and patterns for the

different modems available for the GR-5 receiver.

Table 1-1. RX TX LED Indications

• No light – modem is turned off.

• Green flashes – modem is in receiver mode.

• Solid Green – a radio link has been established;
modem is ready to receive data.

• Solid Green plus Red flashes – modem is receiving

FH915 Plus/
Digital/Satel

Modems

GSM/GPRS

data.

• Solid Red – modem is in transmitter mode.

• Red flashes – a fault condition has been detected.
Check the condition of the radio modem’s antenna to
ensure it is undamaged, and is connected properly and
securely. Also make sure nothing interrupts the signal.

• Red flashes plus Green flashes – modem is in
command mode.

• Solid Orange (Red and Green) – the modem is
initializing.

• Green flashes – the modem is on, registered on the
network, and is waiting for incoming calls (Slave
mode).

• Solid Red – a connection has been established.

• Green flashes – the modem is in direct control mode
(Daisy Chain).

• Orange flashes – an error has occurred (initialization
error, wrong PIN code, and so forth).

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Introduction

The BT LED indicates the level of activity at the Bluetooth

wireless technology communication link:

• Blue flashes – the Bluetooth module is on but no
connection is established.

• Solid blue light – the Bluetooth module is on and a
connection has been established.

• No light – the Bluetooth module is off.

The power button turns the receiver on and off.
The FUNCTION button switches the receiver between

information modes and post-processing modes, starts/stops
data recording, and changes the baud rate of the serial port A
to 9600. Table 1-2 on page 7 describes the REC LED status
when using the FUNCTION button.

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Topcon GR-5 Quick Start Guide

Getting to Know Your GR-5

Table 1-2. FUNCTION Button Operations and REC LED Status

FUNCTION

Key

When data recording is off, and the FUNCTION key is...

Not pressed

Pressed for
< 1 second

Pressed for
1–5 seconds

REC LED Status

No light No data recording.

Orange
blink

Red No free memory; hardware problem with

If FUNCTION key mode is “LED blink mode switch”

Orange Release to change information mode.

If FUNCTION key mode is “Occupation mode switch”

Orange No function.

If FUNCTION key mode is “LED blink mode switch”

Green Release to start data recording (post-

If FUNCTION key mode is “Occupation mode switch”

Green Release to start recording (Kinematic or

Internal file system test in progress.

data recording. No SDHC card.

processing occupation mode undefined).

Static post-processing occupation mode).

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Introduction

Table 1-2. FUNCTION Button Operations and REC LED Status

FUNCTION

Key

Pressed for
5–8 seconds

Pressed for
> 8 seconds

When data recording is on, and the FUNCTION key is...

Not pressed

REC LED Status

Red Release to turn serial port A baud rate to

9600 bps.

No light No function.

Red No free memory; hardware problem with

data recording.

If FUNCTION key mode is “LED blink mode switch”

Green Data recording started (post-processing

occupation mode undefined).

If FUNCTION key mode is “Occupation mode switch”

Green Data recording started (Kinematic post-

processing occupation mode).

Orange Data recording started (Static post-

processing occupation mode).

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Topcon GR-5 Quick Start Guide

Getting to Know Your GR-5

Table 1-2. FUNCTION Button Operations and REC LED Status

FUNCTION

Key

Pressed for
< 1 second

Pressed for
1–5 seconds

Pressed for
5–8 seconds

Pressed for
> 8 seconds

REC LED Status

If FUNCTION key mode is “LED blink mode switch”

Orange Release to change information mode.

If FUNCTION key mode is “Occupation mode switch”

Orange Release to toggle between Static and

Kinematic post-processing modes.

No light Release to stop data recording.

Red Release to turn serial port A baud rate to

9600 bps.

No light No function (data recording still on).

Data and Power Ports

The GR-5 has the following three ports:

• USB – rimmed in yellow; used for high-speed data
transfer and communication between the receiver and an
external device.

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10

U
S
B

S
E
R
I
A
L

P
O
W
E
R

USB

(yellow)

Power

(red)

Serial A

(black)

Introduction

• Serial Port A – rimmed in black; used for
communication between the receiver and an external
device.

• Power – rimmed in red; used to connect the receiver to
an external power source. This port can also be used to
charge the batteries.

The following ports are used internally:

• Serial Port B – left free in the current release.

• Serial Port C – connect the modem and receiver boards.
Note that the GSM/GPRS/CDMA modem is located on
the RF modem board.

• Serial Port D – connect the receiver board and Bluetooth
module. Note that the Bluetooth module is located on
the RF modem board.

Topcon GR-5 Quick Start Guide

External
Antenna

Connector

Bottom Connector for

Standard Setups

Getting to Know Your GR-5

Radio Antenna and Pole Connectors

The SS antenna connects to the external antenna connector
on the GR-5 radome. The radio antenna uses a reverse
polarity TNC connection or BNC connection depending on
the installed radio modem.

The bottom connector connects the receiver to either a
standard 5/8'' thread pole/adapter or the quick disconnect.

SDHC and SIM Card Slots

The SDHC and SIM card slots reside under the batteries near
the base of the dome.

The SDHC card slot is located to the left of the MINTER

inside the battery pocket and connects an optional SDHC
card to the receiver board to provide memory. The data that
resides on the SDHC card can be accessed via the USB or

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Introduction

serial port, or Bluetooth. The following industrial-grade
cards were tested in the temperature range -30°C to 60°C (­22°F to 140°F).

• Transcend® Ultra Industrial 2 GB

• APRO® Industrial 4GB

• SanDisk® Ultra II

• Swissbit® Industrial 2GB

Before using any other SDHC cards, consult with TPS
technical support about compatibility.

The SIM card slot is located to the right of the MINTER

inside the battery pocket and allows a standard SIM card to
be installed in the receiver. Once installed, the SIM card
provides a unique identification for the receiver’s GSM
module and enables the receiver’s GSM functionality based
on the subscribed services. The GSM module with the SIM
card installed can be configured via TRU. A SIM card can be
purchased from a local cellular provider.

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Topcon GR-5 Quick Start Guide

Default Configuration

SDHC Card

SIM Card

Battery

Battery

Default Configuration

The GR-5 is shipped from the factory with the default
configuration. The following table shows the major default
settings for the GNSS board.

Parameter Default Setting

MINTER:

Recording interval 1 second

Elevation mask 5 degrees

Filename prefix log

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Introduction

Parameter Default Setting

Tracking:

Elevation mask 5 degrees

GPS tracking

GLONASS tracking

SBAS tracking

Positioning:

Mode standalone

Elevation mask 5 degrees

PDOP mask 30

GPS usage

GLONASS usage

Multipath reduction

Raw measurement update rate

Position update rate

enabled

enabled

disabled

enabled

enabled

enabled

*

ms

100

*

ms

100

*

*

*

*

*

*

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Datum W84

Topcon GR-5 Quick Start Guide

Parameter Default Setting

RTK:

Position output mode Delay

Ambiguity fixing level Medium

Max number of SVs in RTK 20

Minimum C/A SNR 31 dB*Hz

Default Configuration

Min number of SVs for fixing

5

ambiguities

Max extrapolation time 30 seconds

Serial Ports (A, B, C, D)

*

:

Input mode Command

Baud rate 115200

Hardware handshaking Disabled

Stop bits 1

Parity No parity

Data bits 8

*. Some of the default settings depend on the

options available in the OAF for your GR-5
and may differ from the published values.

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Introduction

The modem default settings vary greatly depending on the
modem type, country of usage, etc. Consult the Operator’s
Manual for details.

Accessories

The following accessories are available for the GR-5
receiver.

Accessory Part Number Description

Cables

Power cable U.S. 14-008052-01

Europe 14-008054-01
Australia 14-008053-01

Receiver power/
charging cable

USB cable 14-008070-01 Connects the receiver

14-008016-03 Connects the receiver

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Topcon GR-5 Quick Start Guide

Connects the power
supply unit to a
grounded outlet.

and the power supply
unit via SAE
connectors for battery
charging.

to an external device
(controller or
computer) for high­speed data transfer
and receiver
configuration.

Accessories

Accessory Part Number Description

Serial cable 14-008005-02 Connects the receiver

ODU-to-alligator
clips cable

Cradle-to­receiver charging
cable

Chargers

Power supply
unit

Charging Cradle 01-050911-01 Charges the batteries.

Antennas

SS/GSM antenna 30-030012-01 The Spread Spectrum

14-008097-01LF Connects the charging

14-008072-01
(1.5m long)

14-008072-02
(0.5 m long)

22-034101-01 Charges the batteries.

to an external device
(controller or
computer) for data
transfer and receiver
configuration.

cradle or receiver to
an auxiliary battery
for powering the
receiver during survey
operations.

Connects the receiver
to the charging cradle
for external power.

and GSM antenna.

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Introduction

Accessory Part Number Description

18

UHF/GSM
antenna

Tripods, Poles, Adapters

Tripod 22-050501-01 The heavy duty

Pole 22-050908-01

Universal
tribrach and
tribrach adapter

Precision tribrach
adapter

Quick disconnect
adapter

30-070003-01
UHF 410-440

30-050503-01
UHF 450-470

22-006008-01
22-006009-011

02-850905-01 Connects to the range

The UHF and GSM
antenna.

tripod.

Used to level the
tripod and secure the
receiver or antenna to
the tripod.

Used to precisely
center, align, and
level the tripod over a
point.

pole for the receiver
to slip into the top.

Topcon GR-5 Quick Start Guide

Accessory Part Number Description

Miscellaneous

Accessories

AA battery pack Holds four AA

batteries to provide a
portable backup
power source for the
receiver

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Introduction

Notes:

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Topcon GR-5 Quick Start Guide

Chapter 2

Getting Started

This chapter describes the activities you normally need to
take when you start using the GR-5 for the first time or
before beginning to survey with the GR-5 receiver,
specifically:

• installing configuration software

• turning the receiver on and off

• inserting SDHC and SIM cards

• charging and attaching batteries to the receiver

• connecting the receiver and an external control device

Installing Software

The Topcon GPS+ CD includes the following software
programs used for configuring and maintaining the receiver.
This software is also available on the TPS website to
registered users.

If installing the program(s) from the GPS+ CD, insert the
CD into the computer’s CD-ROM drive. If downloading the
program(s) from the website, extract the program’s files into
a folder on the hard drive.

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Getting Started

Installing PC-CDU

1. Create a PC-CDU folder on the hard drive and place the
compressed PC-CDU zip file (retrieved from either the
website or the GPS+ CD) in this folder.

2. Navigate to the PC-CDU folder and double-click the
PCCDU_MS zip file.

3. Extract the PCCDU.EXE and associated *.dll file to the
PC-CDU folder.

4. Create a shortcut on the computer’s desktop for quick
access to PC-CDU.

To uninstall PC-CDU, navigate to the location of the *.exe
file. Select the file and press Delete.

Installing TRU

1. Navigate to the TRU folder, and double-click TRU.zip.

2. Extract TRU.exe to the TRU folder.

3. Double-click TRU.exe to run the installer, and then
follow the on-screen instructions.

After installation, shortcuts appear on the desktop and in the
TRU menu.

To uninstall TRU, use Add or Remove Programs in
Windows’ Control Panel. navigate to the location of the
*.exe file.

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Topcon GR-5 Quick Start Guide

Turning On/Off the Receiver

Turning On/Off the Receiver

To turn ON the receiver, press and hold the power button
until the LEDs briefly flash.

To turn OFF the receiver, press and hold the power button
for more than one and less than four seconds (until both the
STAT and the REC LEDs are off).

Installing the SDHC Card

The SDHC card provides memory space in which to save
logged data. Although you may install an SDHC card of any
size, the receiver will recognize only up to 2 GB of memory.

Always initialize the file system on the installed SDHC card
before the first use. Initialization procedure is described in

“Initializing File System” on page 51.

1. Ensure the receiver is turned off.

2. Remove the battery to the left of the MINTER.

3. Carefully insert the SDHC card, label side down, into
the SDHC card slot located at the top of the battery
compartment.

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Getting Started

Once the receiver is turned on, the receiver board will detect
the SDHC card and it will be ready to use as needed.

Installing the SIM Card

The SIM card provides access to communication over GSM,
GPRS, or CDMA services. The SIM card must support
Circuit Switched Data to communicate directly between
receivers. The SIM card must have GPRS support to
communicate over a TCP/IP network.

1. Ensure the receiver is turned off.

2. Remove the battery to the right of the MINTER.

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Topcon GR-5 Quick Start Guide

Installing the Batteries

3. Carefully insert the SIM card, label side up, into the
SIM card slot located at the top of the battery
compartment.

Once the receiver is turned on, the receiver board will detect
the SIM card and it will be ready to use as needed.

Installing the Batteries

Attaching the Batteries

To attach the batteries to the GR-5:

1. With the battery slightly tipped, place the bottom of the
battery into the bottom of the battery compartment.

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Getting Started

2. Gently push the top of the battery into the battery
compartment until it snaps into place. Make sure that the
clip at the top of the battery completely snaps into place.

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Topcon GR-5 Quick Start Guide

Charging the Batteries

Detaching the Batteries

To detach the batteries from the GR-5, so that they can be
charged or replaced:

Using the clip at the top of the battery, gently pull down and
out to detach the battery from the receiver.

Charging the Batteries

You can charge the batteries using the power supply unit or
the battery charging cradle.
A 6-hour charge cycle will fully charge the batteries; the

batteries charge simultaneously.

The Li-Ion batteries used in the battery packs should run at

no less than 80% capacity after 500 charging cycles. These
batteries do not need to be drained before recharging.

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Getting Started

CAUTION

Charging with the Power Supply Unit

CAUTION

The power supply unit is designed for
indoor use only. Do not use it in damp or
wet environment. Do not expose the power
supply to rain or snow. It should only be
used for charging the batteries. Do not use
as a power source during surveying.

The power supply unit can be connected to the charging
cradle or directly to the GR-5. The power supply has the
following specifications:

• input voltage – between 100 and 240 V AC

• frequency of input power – between 50 Hz and 60 Hz

• output voltage – 12 V DC@2.5 A (30 W)

To charge the attached batteries using the power supply unit:

1. Plug the receiver-to-SAE power cable into the
receiver’s power input port.

2. Connect the receiver-to-SAE power cable and the
power-to-outlet cable to the AC adapter.

3. Plug the power supply-to-outlet cable into an available
outlet.

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Topcon GR-5 Quick Start Guide

Charging the Batteries

To grounded outlet

Charging with the Battery Charging Cradle

1. Remove the batteries from the receiver and insert them
into the charging cradle.

2. Connect the power cable to the power supply unit.

3. Connect the SAE connectors on the power adapter cable
and power supply unit.

4. Connect the power adapter cable to one of the ports on
the charging cradle (either port will charge both/either
battery).

5. Plug the power supply to an available outlet.

Charging Temperatures

Charge the batteries only in temperatures between

o

32

F (0oC) and 113oF (45oC). This is important to prevent

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29

Getting Started

serious damage to the batteries, the receiver or injury to
persons.

An optimal charging temperature is between 50

o

and 77

F (25oC). If possible, charge the batteries within this

temperature range.

Estimated Operating Times

Common Conditions: Bluetooth = on; 10-12 SV tracked; using the
detachable batteries; room temperature

For the GR-5 with FH915+ Modem

Receive only mode 14 hours

250mW transmission mode

1W transmission mode

GSM/GPRS in urban areas 13 hours

For the GR-5 with Digital Modem

Receive only mode 14 hours

0.5W transmission mode

1W transmission mode

GSM/GPRS in urban areas 12 hours

For the GR-5 with Satel Modem

Receive only mode 14 hours

30

0.5W transmission mode

12 hours

10 hours

12 hours

9 hours

12 hours

o

F (10oC)

*

*

*

*

*

Topcon GR-5 Quick Start Guide

Connecting the GR-5 with a Control Device

1W transmission mode

GSM/GPRS in urban areas 12 hours

Common Conditions: 10–12 SV tracked; using the detachable batteries;
room temperature

For the GR-5 with Any Modem

Modem off 20 hours

Common Conditions: 10–12 SV tracked; using the battery shells and
AA batteries; room temperature

For the GR-5 with Any Modem

Modem off 2.5 hours

*. At 1 Hz correction rate, charger off.

11 hours

*

Connecting the GR-5 with a Control
Device

You can connect the GR-5 with a computer or hand-held
controller to configure, manage files, or maintain the
receiver.

Topcon’s TRU and PC-CDU software products provide an
interface for various configuration, monitoring, and
management functions for the receiver.

TopSURV field software is used for surveying, common
layout, and GIS purposes and is available for hand-held
controllers.

The following connection methods are available:

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Getting Started

• an RS232 cable and a computer/controller

• a Bluetooth-enabled external device (computer/
controller)

• a USB cable and a computer/controller with the TPS
USB driver installed (for PC-CDU only)

Establishing an RS232 Cable Connection

This section shows you how to connect the GR-5 and a
computer/controller running TRU. See “RTK Survey” on

page 42 for TopSURV connection details.

1. Using the RS232 cable, connect the serial port of the
computer/controller to the receiver’s serial port.

2. Press the power buttons on the receiver and computer/
controller to turn them on.

3. Start TRU on your computer/controller.

4. Select DeviceApplication ModeReceiver

Managing.

5. Click DeviceConnect.

6. On the Connection Parameters dialog box, select the
following parameters:

• Connect Using – select Serial Port

32

• Port name – shows physical and friendly name for
the port. The Application remembers the last used

Topcon GR-5 Quick Start Guide

Establishing an RS232 Cable Connection

transport, and the last successful port/device name
for every transport, so it is easy to connect to the
same device.

• If necessary, use the list button on the right of the
Port name field to choose a port from the Select a
Port dialog.

7. Click Connect.

8. Once a TRU connection with the receiver has been
established, the Tools become active and you can
continue with configuration activities.

To quit TRU, click DeviceDisconnect, then
DeviceExit.

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33

Getting Started

Notes:

34

Topcon GR-5 Quick Start Guide

Chapter 3

TIP

Surveying

This chapter describes how to start surveying using a pair of
GR-5 receivers for post-processing and RTK.

Post-Processing Survey

Step 1: Set up the GR-5 Base

1. Install a heavy duty tripod (PN: 22-050501-01)

over a known point. You do not need universal

tribrach and tribrach adapter when working with
this tripod.

2. Attach the antenna to the modem antenna

connector. This step ensures the safety for the
modem board, even if you does not use it for
transmitting data.

TIP

You can extend the receiver operating
time for post-processing survey by turning

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35

Surveying

off the modem board. Connect to the GR­5 via TRU, click Receiver Settings ->
Power, and set 2 to n in the Slots area.
Note that this will also turn off Bluetooth.

3. Carefully level the tripod and tighten the screws.

4. Attach any other accessories as needed (for

example, a backup power supply).

36

Topcon GR-5 Quick Start Guide

Post-Processing Survey

NOTICE

Step 2: Set up the GR-5 Rover

1. If needed, attach the quick disconnect to the bipod/

range pole.

Use a bipod during post-process surveys to
ensure the antenna/receiver does not move
during data logging.

2. Attach the GR-5 receiver to the quick disconnect.

Make sure the receiver locks into place.

3. Attach the antenna to the modem antenna

connector. This step ensures the safety for the
modem board, even if you does not use it for
receiving data.

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37

Surveying

Lock

GR-5 Recevier

5/8 inch Screw

Quick Disconnect (Optional)

Step 3: Measure Antenna Height (for Base and Rover)

1. Measure the antenna height above the control point

or marker, either the slant height or the vertical
height. You may either measure the vertical height
to the Antenna Reference Point (ARP) located at
the bottom of the GR-5, or measure the slant height

38

Topcon GR-5 Quick Start Guide

Post-Processing Survey

Vertical Height

to ARP

Station Marker

or

Tip of RTK Pole

Slant Height

to Base of
Corner on

Gray Bumper

85.0mm

168mm

228mm228mm228mm228mm228mm228mm253.0mm

A

B

A = ARP to edge = 79.0
B = ARP to corner = 97.5

to the Slant Height Measurement Mark (SHMM) on
the side of the enclosure.

Step 4: Collect Data (for Base and Rover)

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2. Record the antenna height, points name, and start

time in the field notes.

1. Turn on the receiver. The STAT (status) light

(LED) initially blinks red.

39

40

Surveying

2. Once the receiver has locked on to one or more

satellites, the STAT light blinks green for GPS
satellites and orange for GLONASS satellites. A
short red blink indicates that the receiver has not
solved a position.

3. Once the short red blink is gone, the receiver has a

position and surveying can begin; wait for green
and orange lights before beginning data collection.
This ensures that the receiver has the correct date
and time, and is locked on to enough satellites to
ensure good quality data.

The process of locking on to satellites normally
takes less than one minute. In a new area, under
heavy tree canopy, or after resetting the receiver, it
may take several minutes.

4. To begin collecting data, press and hold the

FUNCTION key (for more than one second and
less than five seconds).

5. Release the FUNCTION key when the REC

(recording) LED turns green. This indicates that a
file has opened and data collection has started. The
REC LED blinks each time data is saved to the
internal memory.

6. When finished, press and hold the FUNCTION key

until the REC LED light goes out.

Topcon GR-5 Quick Start Guide

Post-Processing Survey

7. To turn off the receiver, press and hold the power

key until all lights go out, then release.

Amount of Memory Required to Store a One Hour File

Recording Interval (seconds)

#SVs

0.1 1 5 15 30

Single-frequency dual-system receiver

Memory needed to record data

6 11 MB 1.1 MB 221 KB 74 KB 37 KB

10 14 MB 1.4 MB 283 KB 94 KB 47 KB

14 17 MB 1.7 MB 345 KB 115 KB 57.5 KB

18 20 MB 2 MB 407 KB 136 KB 68 KB

Dual-frequency dual-system receiver

Memory needed to record data

6 17 MB 1.7 MB 347 KB 116 KB 58 KB

10 23 MB 2.3 MB 471 KB 157 KB 78.5 KB

14 29 MB 2.9 MB 595 KB 198 KB 99 KB

18 35 MB 3.5 MB 720 KB 240 KB 120 KB

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41

Surveying

NOTICE

RTK Survey

Step 1: Repeat Steps 1 through 3 in “Post­Processing Survey” on page 35

Do not turn off the modem board.

Step 2: Connect a Hand-Held Controller

You can connect the controller to the receiver with a
serial cable.

If the controller is Bluetooth® enabled, you can connect
it to the receiver wirelessly using TopSURV.

• Set the Instrument type to GPS and check the

Bluetooth option in the Connections screen of
TopSURV.

• To change the Bluetooth device that the controller
is connected to, click the Connection icon in the
upper-right corner of the main screen in TopSURV.

Step 3: Start Surveying with TopSURV

1. Create a GPS+ job. A user-friendly Wizard will
guide you through the steps to create a job
configuration.

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Topcon GR-5 Quick Start Guide

RTK Survey

NOTICE

2. After creating a job with the desired configuration
in TopSURV, you can begin the survey.

Job configuration settings will be applied to the
Base receiver only after starting the Base and to the
Rover receiver only after selecting a survey option.

For more details about how to create and
configure a job, start the GR-5 as a base or
rover receiver in RTK and other survey
methods, see the TopSURV User’s Manual.

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43

Surveying

Notes:

44

Topcon GR-5 Quick Start Guide

Chapter 4

Downloading Files

This chapter describes downloading GNSS data files to a
computer.

After completing a survey, download data files to a
computer for storage, post-processing, or backup. TRU and
Topcon Link both provide file managers to download files
from the receiver to a computer.

Downloading Files via Topcon Link

Topcon Link provides two options for downloading files
from a receiver: via Windows® Explorer or via the Topcon
Link interface.

...Using Windows Explorer

1. Connect your receiver and computer.

2. Open Windows Explorer and click the Topcon GNSS
Receivers folder. Right click the folder and select
Explore. The right panel of the window displays the
automatic start of searching for Topcon receivers
connected to any of the computer ports (COM and
USB).

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P/N 7010-1022 www.topconpositioning.com

Downloading Files

When finished, all receivers connected to the computer
ports display.

3. To view information about the receiver, right-click the
receiver, and select the Properties option.

46

4. To view the raw file, double click on the receiver.

Topcon GR-5 Quick Start Guide

Downloading Files via Topcon Link

To import the file(s) from the receiver to a folder, select
the file(s), and copy to the folder using drag-and-drop
method.

...Using Topcon Link

1. Connect your receiver and computer.

2. To start Topcon Link, click the Import from Device
button on the Toolbar.

3. From the left panel of the Import from Device dialog
box, double-click Topcon Receivers.

The program automatically searches for Topcon
receivers connected to the computer ports (COM and
USB). When finished all receivers connected to the
computer ports display.

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47

Downloading Files

4. In the right panel of the Import From Device window,
navigate to and select, or create, a folder to save the
files.

5. To view the collected raw file, double click (or click
Select in the pop-up menu) the receiver. To import the
file(s) from the receiver to the computer and to save in
the selected folder, highlight the file(s) and click the
double arrows.

6. The import in progress displays.

Downloading Files Using TRU

1. Connect the receiver to a computer and run TRU.

2. Click the File Explorer icon in the main window. The
File Explorer dialog box displays all logged raw data
files.

3. To save a file to the computer, highlight the desired file,
right click and select Download from the pop up menu.
In the Save As dialog box navigate to or create a folder

48

in which to download and store the file. Click the Save
button to download and save the file.

Topcon GR-5 Quick Start Guide

Chapter 5

Maintenance

Restoring Default Settings

Most of the settings in the GR-5 have default values, which
you may change as needed for your particular application.
You can always return the receiver to a known operating
condition by restoring its default configuration.

To restore default settings, run TRU and select
ToolsFactory Reset.

Performing Hardware Reset

You can reset the GR-5 without returning any configured
settings to their default values. It may become necessary to
reset the GR-5 to apply certain settings which require a
hardware reset or as part of troubleshooting.

To reset the receiver, run TRU and select ToolsReset
Receiver.

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49

Maintenance

Clearing the NVRAM

The receiver’s Non-Volatile Random Access Memory
(NVRAM) holds ephemeris data, position, the current
board’s settings, such as data recording interval, elevation
masks, etc.

After clearing the NVRAM, your receiver will require some
time to collect new ephemerides and almanacs (around 15
minutes).

Clearing the NVRAM will also reset the receiver to factory
default settings.

To clear the NVRAM using the MINTER, take the following
steps:

1. Press the power key to turn off the receiver.

2. Press and hold the FUNCTION key.

3. Press and hold the power key for about one second.
Release the power key while continuing to hold the
FUNCTION key.

4. Wait until the STAT and REC LEDs are green

5. Wait until the STAT and REC LEDs blink orange.

6. Release the FUNCTION key while the STAT and REC
LEDs blink orange.

To clear the NVRAM using TRU, select ToolsClear
NVRAM.

50

Topcon GR-5 Quick Start Guide

Initializing File System

Initializing File System

The memory card in the GR-5 must be initialized before its
first use. Initializing your memory card while in the receiver
will ensure the card is formatted to the TPS proprietary file
system (TPFS). This file system allows the receiver to
create, store, retrieve, delete, and restore the raw data files.

It is also advisable to reinitialized the memory card
periodically (e.g., quarterly). This will erase any data on the
card, check for bad blocks, and set it up afresh.

To initialize the file system, run TRU, select File Explorer,
right-click (on a computer) or click and hold (on a controller)
within the file list on the Files tab and select Initialize File
System.

Initializing the file system of a connected receiver will erase
all of the receiver’s data files.

Managing Receiver Options

The Option Authorization File enables certain functions,
features, and options in the receiver, such as the following:

• the type of signal (L1, L1/L2, and so on) the receiver
processes

• the amount of data the receiver stores in the memory

• multipath reduction technology

For a complete list of available options and details, consult
with a TPS dealer.

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P/N 7010-1022 www.topconpositioning.com

Maintenance

Checking the Receiver’s OAF using TRU

1. Connect the receiver to a computer/controller and

run TRU.

2. Click the Options icon in the main window. The

Receiver Options dialog box displays that allows
the user to view the current authorization options
and upload new ones.

Loading an OAF using TRU

1. Connect the receiver to a computer/controller, run

TRU, and select Options.

2. Click Upload OAF at the bottom of the Receiver

Options dialog box.

3. Navigate to the location of the new Option

Authorization File. OAFs have .jpo or .tpo
extensions and are unique to each receiver.

4. Select the appropriate file and click Upload to the

Receiver. The new receiver option loads onto the
receiver and the Option Manager table updates.

5. When finished, click Save Profile on the Receiver

Options dialog box, then click FileDisconnect to
prevent conflicts with serial port management.

52

Topcon GR-5 Quick Start Guide

Deleting Files from the Internal Memory Card

Deleting Files from the Internal
Memory Card

A memory card holds a finite amount of collected data. To
free up space for more or new data, delete old data.

1. Connect the receiver to a computer/controller and run
TRU.

2. Click the File Explorer icon in the main window.

3. Highlight a desired file in the File Explorer dialog box,
right-click (on a computer) or click and hold (on a
controller) and select Delete from the pop-up menu.
Click Yes to confirm the deletion.

Recovering Deleted Files

The TPS file system is designed to allow you to recover
deleted files. The operation is easy, fast, and secure without
the need for a data recovery software.

1. Connect the receiver to a computer/controller and run
TRU.

2. Click the File Explorer icon in the main window.

3. Right-click (on a computer) or click and hold (on a
controller) within the file list on the Files tab and select
Mode of operationDeleted Files Recovery.

The receiver starts remounting the file system for
displaying deleted files. During this process the REC

53

P/N 7010-1022 www.topconpositioning.com

Maintenance

NOTICE

NOTICE

LED blinks orange. Once the file system is successfully
remounted, the REC LED stops blinking and the deleted
files will appear in the list of existing files.

In this mode, only the deleted file(s) will
display.

To restore the file system to its normal state, select Mode of
operationNormal.

Activating Sleep Mode

You can put the GR-5 into a dormant state to minimize
power consumption without turning off the receiver
completely. In sleep mode, the power board and Bluetooth
module continue to draw a small amount of power from the
batteries, causing the batteries to slowly drain over time.

1. Turn on the receiver.

2. Press the receiver’s power key for more than four
seconds and less than eight seconds. The STAT LED
will be orange. The receiver enters Sleep Mode.

You can awaken the receiver by turning it on manually or by
sending any number of characters on one of the receiver’s
serial ports.

54

Topcon GR-5 Quick Start Guide

Loading New Firmware

Loading New Firmware

Receiver GNSS firmware is released as a compressed file
that the user download and decompress. This file contains
the following three files:

• ramimage.ldr – the Receiver board RAM file

• main.ldp – the Receiver board Flash file

• powbrd.ldr – the Power board RAM file

To upload firmware files to GR-5 receiver, follow the steps
below:

1. Connect the receiver to a computer and run TRU.

2. Click the Firmware Loader icon in the main window.

3. Select “Receiver/Modem” in the Device field of the
Upload Firmware window.

4. Set the Capture Method to “Soft Break”
(recommended). Browse for and select the receiver
board’s RAM file and Flash file.

5. Click Start to upload the selected files.

6. Click OK to complete uploading new firmware to the
receiver.

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55

Maintenance

Notes:

56

Topcon GR-5 Quick Start Guide

Chapter 6

Troubleshooting

This chapter provides general tips for diagnosing and solving
some common problems you may encounter while using the
GR-5. For more in-depth troubleshooting, see the GR-5
Operator’s Manual.

Check This First!

Before contacting Topcon Technical Support, check the
following:

• Check all external receiver connections carefully to
ensure correct and secure connections. Double check for
worn or defective cables.

• Check all power sources for drained batteries or
incorrectly connected batteries/cables.

• Check that the most current software is downloaded
onto the computer/controller and that the most current
firmware is loaded into the receiver. Check the TPS
website for the latest updates.

• If connecting via Bluetooth, check that the receiver port
used for connection is in Command mode.

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Troubleshooting

Then, try the following:

• Reset the receiver (“Performing Hardware Reset” on

page 49).

• Restore default settings (“Restoring Default Settings”

on page 49).

• Clear the NVRAM (“Clearing the NVRAM” on

page 50).

• Initialize the file system (“Initializing File System” on

page 51). This will erase all files inside the receiver.

If the problem persists, see the following sections for other
solutions.

TX RX LED Blink Pattern on Error Conditions

For internal FH915+/UHF modems: the TX RX LED flashes
red.

• A fault condition has been detected.

– Check that the radio modem’s antenna is

undamaged.
– Contact a dealer to replace the antenna.
– Check that the radio modem’s antenna is securely

and properly connected to the antenna connector.

66

– Move the antenna/receiver away from conducting

objects (such as, large metal objects).

Topcon GR-5 Quick Start Guide

TX RX LED Blink Pattern on Error Conditions

• The cable is damaged.
– Use an undamaged cable.
– Contact a Dealer to replace the cable.

For internal GSM/GPRS modems: the TX RX LED flashes
orange.

• The Rover uses the wrong PIN code, or no PIN code

was selected.

1. In TopSURV, click JobConfigSurvey.

2. Click the “...” (continue) button and press Next to

navigate to the Rover Radio configuration screen.

3. Press Configure GSM.

4. Select the PIN of the Base Station and press OK.

• An initialization error has occurred.
– Check that the radio modem’s antenna is

undamaged.

– Check that the radio modem’s antenna is securely

and properly connected to the antenna connector on
the radome.

– Contact a Topcon dealer to replace the antenna.

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67

Troubleshooting

Obtaining Technical Support

End-users

The U.S., Canada, and international TPS equipment
users are encouraged to contact your local Topcon
dealer.

Your dealer is the focal point of contact for all post­sales technical questions and issues.

Dealers (in the U.S., Canada, Australia)

Topcon dealers can contact Topcon Technical Support
via the password-protected Help Desk, phone, and
email.

Help Desk

To contact Topcon Technical Support via the Help
Desk, visit TechnicalSupport.Topcon.com/User

Phone

To contact Topcon Technical Support by phone,
call:

866-4Topcon or 1-866-486-7266

.

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Topcon GR-5 Quick Start Guide

Obtaining Technical Support

Email

To contact Topcon Technical Support via email,
use the following electronic mail address:

[e-mail]

Dealers (International)

Visit http://www.topcon.co.jp/en/positioning/network/
for contact details in your region.

Dealers in Europe must contact Topcon Technical
Support via http://support.topcon-positioning.eu/

.

P/N 7010-1022 www.topconpositioning.com

69

Troubleshooting

Notes:

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Topcon GR-5 Quick Start Guide