ComNav T300+CGSurvey User manual

USER GUIDE
COMNAV T300+CGSURVEY
Version 1.1
2014.07.10

ComNav T300 + CGSurvey User Guide
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Copyright
Copyright 2014 ComNav. © 2013 ComNav Technology Ltd. All rights reserved.
The ComNav is trademark of ComNav Technology Ltd. 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.
FCC Notice
ComNav T300 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 and (2) this device must accept
any interference received, including interference that may cause undesired
operation.
Where to Find Information
This manual is designed to guide you through the basic T300 procedures and
operations.

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CONTENT
1 Introduction ...................................................................................................................................1
1.1 Technical Assistance ............................................................................................................1
1.2 Your Comments...................................................................................................................1
1.3 Safety Information...............................................................................................................1
1.3.1 Regulations and Safety .............................................................................................1
1.3.2 Use and Care ............................................................................................................1
2 General Information.......................................................................................................................2
2.1 Overview .............................................................................................................................2
2.2 Technical Specifications.......................................................................................................2
2.3 Product Basic Supply...........................................................................................................5
2.3.1 ComNav T300 GNSS Receiver Basic Supply Kit.........................................................5
2.3.2 Datalink Optional Supply Kit.....................................................................................6
2.3.3 Case and Pack...........................................................................................................7
3 Products View ................................................................................................................................9
3.1 Parts of Receiver..................................................................................................................9
3.2 Batteries ..............................................................................................................................9
3.3 Button and LED Operations...............................................................................................11
3.4 Power Supply.....................................................................................................................12
4 Static Mode ..................................................................................................................................14
4.1 Static Mode Configuration ................................................................................................14
4.2 Default Receiver Settings ..................................................................................................16
4.3 Field Static Data Collection................................................................................................17
4.4 Raw Data Download..........................................................................................................18
4.5 Convert to RINEX...............................................................................................................21
4.6 Memory Management ......................................................................................................23
5 Real-Time Kinematic Mode ..........................................................................................................24
5.1 Installation of CGSurvey Software.....................................................................................24
5.2 Radio Mode.......................................................................................................................25
5.2.1 Radio Mode Setting-Up..........................................................................................26
5.2.2 Start Base Station by CGSurvey..............................................................................26
5.2.3 Start Rover Station by CGSurvey ............................................................................32
5.2.4 Radio Signal Enhancement.....................................................................................33
5.3 PDA CORS Mode................................................................................................................34
5.3.1 PDA CORS Mode Setting-Up...................................................................................35
5.3.2 Start Rover by CGSurvey.........................................................................................35
6 Start New Project and coordinate Localization ............................................................................37
6.1 New Project.......................................................................................................................37
6.2 Localization-- Site Calibration and Reset Grid ...................................................................40
6.2.1 Site Calibration .......................................................................................................40
6.2.2 Reset Grid Function................................................................................................42

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7 CGSurvey Basic Function..............................................................................................................44
7.1 Measuring Points...............................................................................................................44
7.2 Continuous Topo ...............................................................................................................44
7.3 Staking out Points..............................................................................................................45
7.4 Cogo ..................................................................................................................................47
7.5 Export Points to PC............................................................................................................47
7.6 Import Points to Current Job.............................................................................................48
Appendix A 7 Pin Lemo Definition ..................................................................................................50
Appendix B Setting up of PDL..........................................................................................................51
Appendix C Set Controller Log on the Internet ...............................................................................54

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1 Introduction
Thank you for choosing ComNav T300 GNSS Receiver.
This manual is designed to help you to rapidly familiarize with T300, and start your
project with T300.
1.1 Technical Assistance
If you have any question and cannot find the information you need in the
documentation, contact your local Dealer. Alternatively, please request technical
support using the ComNav Website at (http://www.comnavtech.com/) or ( http://
www.nprco.com )T300 receiver technical support email [email protected].
1.2 Your Comments
Your feedback about the support documentation will help us to improve
the products. Please e-mail your comments to [email protected].
1.3 Safety Information
This manual describes ComNav T300 GNSS Receiver. Before you use T300, please
make sure that you have read and understood this publication, as well as safety
requirements.
1.3.1 Regulations and Safety
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. Bluetooth® operates in license-free bands.
1.3.2 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.

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2 General Information
2.1 Overview
The ComNav T300 GNSS Receiver provides the following features:
Ultra small and super light
-Size (W × H): 15.8cm × 7.5cm
-Weight: 0.95kg (including 2 batteries)
256 channels with simultaneously tracked satellite signals
Increased measurement traceability with ComNav’s unique QUAN™
algorithm technology
Many user-friendly conveniences built in
Hot swap battery design: low power consumption with hot swap battery
design, when the warning sounds and LED flashes, put your second
battery in place
Bluetooth wireless technology for cable free
Simple keypad with on/off buttons and LED indicators for power, radio,
Bluetooth, and satellite tracking
IP67,Absolutely waterproof
Full base/rover interoperability
Operates within a VRS™ network for conventional base station-free rover
capability
Integrated receive and transmit radio
Support long baseline E-RTK™, namely Beidou B3 signal used in RTK
calculate engine; concern the current situation, this mode can be used in
south east Asia
2.2 Technical Specifications
Signal Tracking
256 channels with simultaneously tracked satellite signals
-GPS: L1 C/A, L1/L2 P, L5
-BeiDou: B1, B2, B3
-GLONASS: L1/L2
-SBAS: WASS, EGNOS, MASAS

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Performance Specifications
Cold start: < 50s
Warm start: < 30s
Initialization time: typically < 10s
Initialization reliability: typically > 99.9%
Signal reacquisition: < 2s
Positioning Specifications
Post Processing Static
-Horizontal: 2.5mm + 1ppm RMS
-Vertical: 5mm + 1ppm RMS
Real Time Kinematic (RTK)
-Horizontal: 10mm + 0.5ppm RMS
-Vertical: 20mm + 0.5ppm RMS
E-RTK(< 100km)
-Horizontal: 0.2m + 1ppm RMS
-Vertical: 0.4m + 1ppm RMS
Code differential GNSS positioning
-Horizontal: .0.25m + 1ppm RMS
-Vertical: 0.5mm + 1ppm RMS
SBAS: Typically < 1m 3D RMS
Standalone: < 1.5m RMS
Communications
1 Serial port(7 Pin Lemo), Baud rates up to 921600 bps
Radio modem: Tx/RX with full frequency range from 410-470 Mhz
-Transmit power: 0.5-2W adjustable
-Range: 1-4km
Position data out rates: 1Hz, 2Hz, 5Hz, 10Hz

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5 LED Indicating light (indicating Power, Satellite Tracking, Differential
Data an Data Recording)
Bluetooth: V 2.X protocol, compatible with windows 7, Windows Mobile
and Android
Data Format
Data inputs/outputs
-Correction data I/O: RTCM 2.x, 3.x, CMR (GPS only), CMR+ (GPS only)
Position data outputs
-ASCII: NMEA-0183 GSV, RMC, HDT, VHD, GGA, GSA, ZDA, VTG, GST,
PJK, PTNL
-ComNav Binary update to 20Hz
Physical
Size (W×H): 15.8cm×7.5cm
Weight: 0.95kg (include 2 batteries)
Environmental
Operating temperature: -40℃to +65℃
Storage temperature: -40℃to +85℃
Humidity: 100% condensation
Waterproof and dust proof: IP67 protected from temporary immersion
to depth of 1 meter, floats
Shock: survives a 2 meter drop on to concrete
Electrical
Input Voltage: 5-27 VDC
Power consumption: 2.85 W(3 constellations)
Li-ion battery capacity: 2×1800 mAh, up to 8 hours typically
Memory: 256 MB internal memory and 100MB for static data record
Software (optional)
ComNav CGSurvey field software
ComNav Compass Receiver Utility Office software (CRU)

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SurvCE or Field Genius(optional)
2.3 Product Basic Supply
The tables in this section provide an overview of the different items of basic supply.
Basic Supply is the standard accessories for each kit. We can also provide customized
supply according to your requirement.
2.3.1 ComNav T300 GNSS Receiver Basic Supply Kit
ComNav T300 GNSS Receiver Basic Supply Kit contains two receivers and related
accessories. With this kit, you can perform basic radio mode as described in chapter
5.
Items
Picture
2* Kits T300 Receiver
4* Lithium Battery
H.I. Tape
2* Connector
2* Battery Charger
2* Lemo to RS232 Cable

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2* Lemo to USB Cable
2* Whip Antenna (UHF)
1*2M Range Pole
ALL STAR Controller (with
battery and TF card inside)
USB Data Cable of Controller
Charger
Double Bubbles Tribrach with
High Adapter
1* 30cm Extension bar
External Power Cable
2.3.2 Datalink Optional Supply Kit
For long distance radio communication, you may need this Datalink Kit.

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Item
Picture
PDL Radio
Datalink cable from PDL to T300
Configuration cable
Standard Datalink Antenna with 5
Meter Cable
External Power Cable
2.3.3 Case and Pack
Transport Case and Carry Pack are designed for containing one ComNav T300 GNSS
Receiver Basic Supply Kit. You can also order two pairs of case and pack if you’d like
to.
Item
Picture
Transport Case

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Carry Pack

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3 Products View
3.1 Parts of Receiver
All buttons and LEDs are located on the front panel. Serial port and connectors are
located on the bottom of the unit.
Front Panel
The Power button function is power on and power off the receiver.
The Function button is to enable or disable the raw data recording.
The indicator LEDs show the status of data logging/downloading, power, satellite
tracking,
Bluetooth, and radio transmit/receive.
Lower Housing
The lower housing contains a communication/power port, radio antenna connector,
two batteries and a fixing screw in the center.
3.2 Batteries
The receiver has two rechargeable Lithium-ion batteries, which can be removed for
charging. The internal batteries typically provide about 8 hours of power for a rover
operation. About 4.5 hours if it is operated as a base station using the internal
460-470 MHz Tx (transmit at 1-2 watt) radio. These times vary according to different
operations and conditions.
In RTK mode, if the base station uses internal UHF to transmit correction data, which
will enable the power consumption a lot, we strongly suggest to use external power
supply for base station receiver. Refer to chapter 3.4.2 for details about external

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power supply.
Battery Safety
Charge and use the battery only in strict accordance with the instructions provided.
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 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 its contacts.
Charging the Lithium-ion Battery
The rechargeable Lithium-ion battery is supplied partially charged. Charge the
battery completely before using it for the first time. Charging takes approximately 7
hours per battery at room temperature. If the battery has been stored for a long
time, charge it before your field work.
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.
Battery Charger
The charger has two slots and can charge two Lithium-ion batteries simultaneously,
beside each slot there is a LED indicator to display the charging status. Refer to the
table below for detailed information.
Indicator status
Battery status
Blue
No battery in
Red
Charging
Blue
Fully charged
Storing of the Lithium-ion Battery
Do not keep batteries inside the receiver if the receiver not used for long time, take
out the batteries from receiver for shipment.
Dispose of the 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.

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3.3 Button and LED Operations
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. On the front panel, the LEDs stand for power, radio, satellite,
Bluetooth, Data logging/downloading respectively. The following items define each
possible LED state:
Differential LED:
As a Base station: the differential LED flashes once per second when transmit
differential data.
As a Rover station: the differential LED flashes when getting differential data from
Base station or Network.
Satellite LED:
It will flash several times every 5 seconds, which means how many satellites locked
by the receiver.
Bluetooth LED:
The LED indicator flashes when controller or PC is connected with the T300 receiver
via Bluetooth.
Battery LED:
The indicator shows T300 GNSS receiver is on or off.
All the two battery LEDs will be on if you use the external power supply and only one
is on if you use the internal batteries. The buzzer will alarm if the power is going to
be run out.
Data logging:
The data logging button only flashes under the following situations:
A. In the static mode
The interval of flashing shows the sample interval of collecting data.
B. RTK mode

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When the receiver is connecting to Controller or PC and receiving commands.
C. Internal memory is run out
When the internal memory of the receiver is run out, the data logging LED and
differential LED both flash 1/s simultaneously.
Power button:
To turn on the receiver, press the button for about 1 second, all the five LEDs above
light up simultaneously and remain lit for 3 seconds.
To turn off the receiver, long press the power button until all the LEDs off.
The states of the LEDs under different conditions are listed in the table below:
3.4 Power Supply
We have two methods for T300 power supply: internal power supply and external
power supply. They will be introduced in this section.
Internal Power Supply
Two rechargeable Lithium-ion batteries are supplied with the receiver. The T300
receiver adopts the hot swap battery design which can effectively reduce the power
consumption and make the whole system work more efficiently.
If you put one battery in T300, the corresponding battery LED will light; if you put
two, receiver will use battery A first and the left battery LED will light; if battery A is
run out, right battery LED for battery B will light.
When the warning sounds and LEDs flash, put another battery in the empty battery
container or replace the battery whose light is off.

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External Power Supply
The base station uses internal UHF to transmit correction data, which will increase
the power consumption a lot, therefore, ComNav strongly suggest you to use
external power supply (7-28 volt DC) for base station receiver.
You can connect the receiver to an external power source through 7-pin Lemo port
in the bottom of the receiver. As shown in the snapshot below, use Lemo to RS232
cable to connect with T300 and external power cable. Connect the red alligator clips
of external power cable to the positive of external battery and the black one to
negative.
Tips: Please use 7-28V external battery with high quality. T300 have the
protection mechanism of reversed battery connection, but it cannot work if you reverse
connection.

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4 Static Mode
This chapter describes how to use T300 for static survey. According to the workflow
of static survey, we will explain the operation in the following 5 sections--receiver
configuration, default setting, static data download, convert data to Rinex format and
receiver memory management.
4.1 Static Mode Configuration
Use CRU (Compass receiver utility) software to configure T300. You can download
the software from the below link:
http://www.comnavtech.com/download.asp?bigclassid=28
After download and install software (install the USB drive) , please follow the step to
configure T300.
Tips: There are two kinds of cable can be used for static configuration, 7Pin Lemo to USB or 7
pin Lemo to RS232. Here we suggest use 7 pin Lemo to USB cable, it is more convenient.
Power on receiver, press the function panel twice shortly, and then the yellow
LED will light on, it means the receiver in configuration mode.
Use the 7 pin LEMO (link with T300 LEMO) to USB (link with PC) cable to build
connection from receiver to pc, then in PC it will indicate to find the new
hardware and ready for use.
Run the software CRU and click icon , in the Serial port Com option, you
will find the USB option, and then click OK to make the receiver connect with
your computer. If the connection is successful, you will see the SN No. of
receiver in the left top icon of CRU software.

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Click icon to configure:
1. Sample interval: You can choose sample interval of observations. As the
standard static survey use the default value 15 seconds. The maximum data
rate is 20Hz, the minimum is one observation per minute.
2. Mask angle: Mask angle means if you set the mask angle to N degree, the
receiver doesn’t track the satellite whose elevation angle is below N degree,
just as shown in the figure below. Using CRU, you can directly input angle
values such as 10 degree for different constellations. In this way, low
elevation satellites, which may cause serious multipath or have low SNR, can
be rejected.
3. Data Log: You can choose logging data manually or automatically in this
setting.

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Manual mode: data is recorded or stopped by hand; hold on the record
button until the radio LED off, the Record Led flashing shows the sample
interval of collecting data.
Auto mode: record data continuously as long as satellites received.
Tips: if use T300 only for static survey, please set data log as auto, this will save
your time in field work.
4. Data Log Session: If you set the Data Log Session to Auto, the receiver will
keep recording data in one file until it is turned off or its memory is run out.
If set to 1 hour, the data recorded will be saved in one file per 1 hour, it is
the same for 2 hours, 3 hours, and 4 hours etc.
Complete all the configurations and click Apply Settings to save the settings. Exit
and restart the receiver to activate configurations.
4.2 Default Receiver Settings
Settings
Factory default
Sample Interval (second)
15
GPS Mask Angle (degree)
15