ComNav SinoGNSS T300 User manual

SinoGNSS○
RT300 User Guide
T300 GNSS Receiver
User Guide
Version 1.05
October 2017

SinoGNSS○
RT300 User Guide
Corporate office
ComNav Technology Ltd.
Building 2, No.618 Chengliu Middle Road, 201801 Shanghai, China
Tel: [phone]
Fax: [phone]
Website: http://www.comnavtech.com
E-mail: [e-mail]
Trademark notice
© 2016 ComNav Technology Ltd. All rights reserved.
SinoGNSS is the official trademark of ComNav Technology Ltd., registered in
People’s Republic of China, EU, USA and Canada.
FCC Notice
SinoGNSS○
RT300 GNSS receivers comply with the limits for a Class B digital device, pursuant to
the Part 15 of the FCC rules when it is used in the Portable Mode.
Operation is subject to the following two conditions:
(1) This device may not cause harmful interference;
(2) It must accept any interference received, including interference that may cause undesired
operation.
Copyright Notice
This is the V1.05 (October, 2017) revision of the T300 GNSS Receiver User Guide. It cannot be
copied or translated into any language without the written permission of ComNav Technology.
Technical Assistance
If you have any question and can't find the answer in this manual, please contact your local
dealer from which you purchased the T300 receiver. Alternatively, request technical support from
ComNav Technology Website: www.comnavtech.com or technical support email:
[e-mail] feedback about this Guide will help us to improve it with future
revisions. Please email your comments to: [e-mail].
Safety Information
Before using the receiver, please make sure that you have read and understood this user Guide,
as well as the safety requirements.
Connect your devices strictly based on this User guide
Install the GNSS receiver in a location that minimizes vibration and moisture
Avoid falling to ground, or colliding with other items

SinoGNSS○
RT300 User Guide
Do not rotate 7-pin Lemo port
Do not cover the radio, keep a sound ventilation environment
To reduce radiation, please keep above 2 meters away from the radio station
Take lighting protection measures when installing antennas
Change the cable if damaged
Related Regulations
The receiver contains integral Bluetooth® wireless technology and UHF. Regulations regarding
the use of the datalink vary greatly from country to country. In some countries, the unit can be
used without obtaining an end-user license. But in some countries the administrative
permissions are required. For license information, please consult your local dealer.
Use and Care
The receiver can withstand the rough treatment that typically occurs in the field. However, the
receiver is high-precision electronic equipment and should be treated with reasonable care.
Warning and Caution
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 risk of serious injury to your person and/or damage to
the equipment, because of improper operations or wrong settings of the equipment.
CAUTION- A Caution alerts you to a possible risk of damage to the equipment and/or data loss.
Warranty Notice
ComNav Technology does not warranty devices damage because of force majeure (lighting, high
voltage or collision).
ComNav Technology does not warranty the disassembled devices.

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RT300 User Guide
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CONTENTS
1 Introduction ................................................................................................................................. 3
1.1 About the receiver ............................................................................................................3
1.2 Receiver Features..............................................................................................................3
1.3 T300 Receiver parts list.....................................................................................................3
1.3.1 Basic Supply kit....................................................................................................... 3
1.3.2 Optional Datalink kit .............................................................................................. 5
1.3.3 Transport Cases......................................................................................................6
2 Setting up the receiver................................................................................................................. 8
2.1 Environmental requirements............................................................................................ 8
2.2 Front panel........................................................................................................................ 8
2.3 Lower housing................................................................................................................... 8
2.4 Power supply.....................................................................................................................9
2.4.1 Internal batteries....................................................................................................9
2.4.2 External Power Supply..........................................................................................10
2.5 Pole-mounted setup .......................................................................................................10
3General Operation.................................................................................................................11
3.1 Button functions ............................................................................................................. 11
3.2 LED behavior ................................................................................................................... 11
4Static survey ..........................................................................................................................12
4.1 Receiver Configuration....................................................................................................13
4.2 Static Data Collection......................................................................................................14
4.3 Static data management.................................................................................................14
4.3.1 Raw Data Download.............................................................................................14
4.3.2 Convert to RINEX ..................................................................................................15
4.3.3 Memory Management .........................................................................................17
5 Real-Time Kinematic Survey (RTK).............................................................................................18
5.1 Installation of CGSurvey Software ..................................................................................18
5.2 Start a New Project..........................................................................................................19
5.3 Bluetooth connection .....................................................................................................21
5.4 Internal RadioMode........................................................................................................24
5.4.1 Start Base Station by CGSurvey............................................................................25
5.4.2 Start Rover Station by CGSurvey.......................................................................... 27
5.5 External radio mode........................................................................................................ 29
5.6 PDA Net Mode.................................................................................................................30
5.7 Internal GPRS Mode ........................................................................................................31
5.7.1 Point to Point/Points mode (P to PS mode) .........................................................31
5.7.2 Internal 3G Ntrip client mode..............................................................................32
5.7.3 Phone call mode...................................................................................................33
6 Basic Survey Functions...............................................................................................................33
6.1 Measuring Points ............................................................................................................ 33
6.2 PPK .................................................................................................................................. 34
6.3 Continuous Topo ............................................................................................................. 36
6.4 Staking out Points............................................................................................................36
6.5 Cogo ................................................................................................................................38
6.6 Localization-- Site Calibration and ResetGrid .................................................................38
6.6.1 Site Calibration..................................................................................................... 38
6.6.2 Reset Grid Function............................................................................................... 39
6.7 Export Points toyourPC ....................................................................................................40
6.8 Import Points to Currentproject......................................................................................41

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RT300 User Guide
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7 Specifications ............................................................................................................................. 42
Appendix A: 7-Pin Lemo definition ...............................................................................................43
Appendix B: Setting up of PDL ......................................................................................................43
Appendix C: Connect your controller to the Internet................................................................... 46

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RT300 User Guide
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1 Introduction
The SinoGNSS○
RT300 GNSS Receiver User Guide is aimed to help you get familiar with
the T300 receiver and start your project effectively. We highly recommend you to read
this manual before surveying, even though you have used other Global Positioning
System (GPS) receivers before.
1.1 About the receiver
With SinoGNSS○
RQUANTM algorithm, T300 GNSS receiver can be applied in RTK mode
with all GNSS constellations. T300 receiver has ultra-small size and strong
anti-interference ability to make it possible to work even in harsh environments. It is
the ideal RTK/GNSS product for surveyors.
1.2 Receiver Features
The SinoGNSS○
RT300 GNSS Receiver keyfeatures:
Ultra small and super light
- Size (W × H): 15.8cm × 7.5cm
- Weight: 0.95kg (including 2 batteries)
256 channels of simultaneously tracked satellite signals
Increased measurement traceability with SinoGNSS ○
RQUAN™
algorithm technology
Hot swap battery design
Cable-free Bluetooth wireless technology
Keypad with on/off buttons and LED indicators for power, radio,
Bluetooth, and satellite tracking
IP67 waterproof
Full base/rover interoperability
Integrated receiving & transmitting radio
Integrated 3G module, support Ntrip and Point to Point/Points protocols
Support long baseline E-RTK™ (Beidou B3 signal is included in RTK
calculate engine)
1.3 T300 Receiver parts list
This section provides overall T300 receiver parts list, including basic supplies and
customized kits based on your requirements.
1.3.1 Basic Supply kit
SinoGNSS○
RT300 GNSS Receiver Basic Supply kit contains two receivers and related
accessories.

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RT300 User Guide
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Item
Picture
2* Kits T300 Receivers
1*GNSS Connector
2*7-pin Lemo to RS232
Cable
2* 7-pin Lemo to USB Cable
External Power Cable
2* Whip Antenna (UHF)
1*2m-Range Pole with yellow
bag
4* Lithium-ion Battery

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RT300 User Guide
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2* Battery Charger
ALL STAR Controller (with
battery and TF card inside)
USB Data Cable of Controller
Controller Charger and Cable
Controller Bracket
Optional accessories:
Double Bubbles Tribrach with
High Adapter
1* 30cm Extension bar
1.3.2 Optional Datalink kit
This kit is necessary for long distance radio communication, shown in the following
figures:
Item
Picture
External Radio

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RT300 User Guide
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PDL to T300 Datalink
cable
Configuration cable
Datalink Antenna
External Power Cable
Aluminum Bracket
Extension Bar
1.3.3 Transport Cases
Standard transport Case is designed for containing Basic supply kit of one SinoGNSS○
R
T300 GNSS Receiver.

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RT300 User Guide
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Base Rover
The optional choice is provided to have capacity of two kits of T300 receivers.

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RT300 User Guide
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2 Setting up the receiver
This chapter provides general information on environmental requirements, setup,
power supply and connection of the T300 receiver.
2.1 Environmental requirements
To keep the receiver with a reliable performance, it is better to use the receiver in
safe environmental conditions:
• Operating temperature: -40°C to +65°C
• Storage temperature: -45°C to +85°C
• Out of corrosive fluids and gases
• With a clear view of sky
2.2 Front panel
Receiver front panel contains five indicator light emitting diodes (LEDs), Power
button and record button. The indicator LEDs show the status of power, radio,
satellite tracking, Internal 3G and Raw Data Recording. For detailed information, see
chapter 3.2.
2.3 Lower housing
Receiver lower housing contains a serial port, UHF radio antenna connection, two
removable battery compartments (slots for SIM and memory card are located inside
of battery compartment A), and a threaded insert.

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RT300 User Guide
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2.4 Power supply
T300 GNSS receiver supports internal batteries and external power input.
2.4.1 Internal batteries
The receiver is equipped with two rechargeable Lithium-ion batteries, which can be
removed for charging. The T300 receiver adopts the hot swap battery design that
provides you an effective survey workflow. The internal batteries typically provide
about 8-hour operating time as a rover, and about 3.5-hour operating time if
operated as a base station with internal UHF Tx (transmit at 1-2 watts). However,
this operating time varies based on environmental conditions.
Battery Safety
Charge and use the battery only in strict accordance with the instructions below:
–Do not use or charge the battery if it appears to be damaged. Signs of damage
include, but are not limited to, discoloration, warping, and leaking battery fluid.
–Do not expose the battery to fire, high temperature, or direct sunlight.
–Do not immerse the battery in water.
–Do not use or store the battery inside a vehicle during hot weather.
–Do not drop or puncture the battery.
–Do not open the battery or short-circuit itscontacts.
Charging the Lithium-ionBattery
Although a dual battery charge is provided, the lithium-ion battery is supplied
partially charged. To charge the battery, first remove the battery from the receiver,
and then place it in the battery charger, which is connected to AC power. Please
obey the following instructions when charging your batteries:
–Charge the battery completely before using it for the first time.
–Fully charge takes approximately 6 hours per battery at room temperature.
–If the battery has been stored for a long time, charge it before your field work.
–Re-charge the battery at least every three months if it is to be stored for long

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RT300 User Guide
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time.
Storage of the Lithium-ion Battery
–Do not keep batteries inside the receiver if the receiver not used for long time.
–Keep batteries in dry conditions.
–Take out the batteries from receiver for shipment.
Dispose of the Lithium-ion Battery
–Discharge a Lithium-ion battery before dispose of it.
–Dispose of batteries is an environmentally sensitive manner, and adhere to any
local and national regulations concerning battery disposing or recycling.
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.
2.4.2 External Power Supply
The receiver is connected to an external power supply through a lemo to RS232
cable, and make sure that the red alligator clip is connected to the positive of
external power supply, black one to negative. Over-voltage function cannot
protect your T300 receiver if reverse connection.
Tip: The power consumption will be increasing if the base station transmits correction data
through internal UHF in the RTK mode; therefore, we strongly suggest using external power
(7-28 volt DC) for the base station.
2.5Pole-mounted setup
To mount the receiver on a range pole as the figure shown below:

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RT300 User Guide
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Tip: Do not tightly clamp the controller on the Range Pole.
3General Operation
This chapter introduces all controls for the general operation, including button
functions and all LED behaviors on the front panel.
3.1 Button functions
There are two buttons on the front panel, power button and record button.
Power button:
Press the power button for about 1 second to turn on the receiver;
To turn off the receiver, long press the button for 3-4 seconds until all LEDs off.
Record button:
Switch to static mode：Long press the record button for about 2 seconds, release
immediately when hearing beep from receiver;
Switch to RTK mode: press the button until Raw Data recording LED off.
Tip: The record button only works when receiving satellite signals
3.2 LED behavior
The LEDs on the front panel indicate receiver working status. Generally, a lit or
slowly flashing indicates normal operation, and an unlit LED indicates that no
operation is occurring. The following figure and table define each possible LED
state:
Thread the receiver onto the range pole
Mount the controller bracket to the pole
Install the controller into the bracket

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RT300 User Guide
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LEDs
States
Description
Power
Lit
Enough power
Flashing
Low power
Differential Data
Flashes once per second
Receiving/transmitting differential
data
Satellite Tracking
Fast flashing
No satellite received
Flashes N times every 5 seconds
Received N satellite signals
Internal 3G
Flashes in blue color
GPRS function is working
Raw Data recording
Flashes according to the selected
sample interval
1) Sample interval varies from
20Hz to 60s.
2) Flashing 1/s simultaneously
with differential light if internal
memory is run off
Power LEDs:
Power supply: 1) Two power LEDs are on if using the external power supply; 2) Only
power LED of working battery will be on if using the internal battery.
Low battery: 1) Power LED will flash with beep only with one battery; 2) if with two
batteries, the power LED of low battery will flash, and swapped to another battery
when it is run off.
4Static survey
This chapter describes static survey through T300 receiver and CRU software. For
static survey, there is no control to change settings through the front panel of T300
receivers, it only can be configured by external software (Compass Receiver Utility):
1) Receiver configurations; 2) check receiver settings and status; 3) save and output
raw observation data; 4) convert data into Rinex format.

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RT300 User Guide
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4.1Receiver Configuration
1. Download and install CRU software from (ensure the driver is properly
installed in your PC):
http://www.comnavtech.com/download.asp?bigclassid=28
2. Connect the receiver and your PC through 7-pin lemo to USB cable.
3. Turn on your T300 receiver and click set port in CRU -> USB in the serial port
option -> enter proper baud rate -> click OK to complete receiver connection.
The SN of receiver will appear in the title bar if connected successfully.
Tips: two types of cable are provided in your package,
1) we recommended use 7-pin Lemo to USB cable to configure the receiver and raw
observation data downloading;
2) with 7-pin Lemo to RS232 cable, you can connect T300 receiver with external power or
firmware upgrade.
4. Click Config to configure the receiver:
Sample Interval: change the sample interval of observations, the maximum data
rate is 20 Hz, the minimum is one observation per minute.
Mask angle: disable the receiver to track satellites that below the mask angle.
You can set mask angle values for different constellations, which can reduce
serious multipath influence or low SNR.
Data Log: logging data manually or automatically.
Data Log Session: 1) Manual means that the receiver keeps recording data in
one file until the receiver is turned off or its memory runs out; 2) if set to
1\2\3\4\12 hours, the data recorded will be saved in to a file every 1\2\3\4\12
hours.

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RT300 User Guide
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5. Complete all configurations and click Apply Settings to save settings. Exit and
restart the receiver to activate configurations.
4.2Static Data Collection
Static survey is mainly used for the control survey. To reach millimeter accuracy,
follow guidelines below:
At least 3 GNSS receivers are required to form a stable triangulation network.
It is better to set Data Log Session as manual on the known point.
Power off the receiver before moving to other observation site.
To quickly post-process static observation raw data, write down the station
name, receiver SN, antenna height, start and end time for each observation
site.
4.3 Static data management
This section consists of raw data download, RINEX format conversion and memory
management for T300 receiver.
4.3.1 Raw Data Download
The raw observation data is commonly saved in internal memory of T300 receiver,
download data from receiver to your PC through CRU software.
1. Connect the T300 receiver to your PC as described before (see Chapter 4.1).
2. Click Folders to select download path
3. Click File Download in project menu to check all raw data on main window, or

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RT300 User Guide
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click List File to refresh raw data list.
4. Right-click on the file name to modify, download or delete the raw observation
data.
Click Download to save raw observation data in download path.
Click Delete to remove raw data from the receiver.
4.3.2 Convert toRINEX
After downloading raw observation data to your PC, go to to convert from
ComNav binary format (*.cnb) to RINEX.
Click in standard toolbar to change Convert Settings, mainly export
format and export observation information.
Modify: Only Station Marker
and Antenna height can be
modified.

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RT300 User Guide
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Tip: In some Post Processing software, the BeiDou observations cannot be processed,
you can uncheck the BeiDou B1,B2,B3 observations.
Click to select the Antenna Type and Measurement. If you cannot find
T300 antenna, 1) input the value of R0 (horizontal offset from measurement
mark to phase center) and h0 (vertical offset from measurement mark to phase
center), R0 is 0.079m and h0 is 0.0411m respectively for T300 receiver; 2) or
check Enable antenna configure file to select Antennas.ini file to select
Antenna type again. You can also add, edit and delete antenna types based on
your requirement.

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RT300 User Guide
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Then click to convert to RINEX, the RINEX data will be save in the same
path as raw observation data.
4.3.3 Memory Management
The receiver will stop recording raw data if the internal memory runs out, the
differential LED and data logging LED will flash simultaneously with 2-second interval.
In this case, you need to format the internal memory before starting another static
survey, as shown in the following figure.
Tip: 1) long press the power button and the recording button simultaneously to clear internal
memory if you are conducting surveys. 2) To download observation data if saved in the