GETTING STARTED GUIDE
X20+GPS
Content
1. Introduction
1.1 Technical Assistance
1.2 Your Comments
2. Overview
2.1 Safety Information
2.1.1 Warning and Cautions
2.1.2 Regulations and Safety
2.1.3 Use and Care
2.2 Features
2.3 Specifications
3 Preparation
3.1 Equipment Description
3.2 Batteries and Power
3.2.1 External Power and Internal Battery
3.2.2 Charging the battery
3.2.3 The Battery Usage and Disposing Notices
3.3 Parts of the Receiver (control panel)
3.3.1 Front panel view
3.3.2 Bottom view
4. Setting up the Receiver as Static
4.1 Set Receiver
4.2 Collect the Static Data
5. Configuration
5.1 Static configuration
5.1 NMEA 0183 output configuration…………………………………………………………………………………13
5.3 PPK Configuration…………………………………………………………………………………………………………13
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6.Download static data from X20+ receiver……………………………………………..…………………….……13
7. PPK surveying
7.1 Installation of the CHC PPK Software in PDA
7.2 Launch the HCDiff to carry out Surveying Project
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7.2.1 Establish Bluetooth Connection with X20+ GPS
7.2.2 Carrying out PPK surveying
7.2.3 Post process the PPK data in CGO
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Introduction
1. Introduction
Technical Assistance
Your Comments
Thank you for choosing CHC X20+GPS receiver.
This Getting Started Guide is designed to help you rapidly familiarize
yourself with your new equipment.
1.1 Technical Assistance
If you have a problem and cannot find the information you need in
the product documentation, contact your local dealer.
Alternatively, please request technical support using the CHC
Website at (www.chcnav.com) or CHC technical support email
support@chcnav.com.
1.2 Your Comments
Your feedback about the supporting documentation helps us to
improve it with each revision. E-mail your comments to
Feedback@chcnav.com.
X20+ GPS – 1.01 Rev A – September 2010
1
Overview
2. Overview
Safety Information
Features
Specification
2.1 Safety Information
This manual describes CHC X20+ GPS Receives. Before using your
receiver make sure that you have read and understood this
publication, as well as safety requirements.
2.1.1 Warning and Cautions
An absence of specific alerts does not mean that there are no safety
risks involved.
A Warning or Caution information is intended to minimize the risk
of personal injury and/or damage to the equipment.
WARNING-A Warning alerts you to a likely risk of serious injury to
your body and/or damage to the equipment.
CAUTION- A Caution alerts you to a possible risk of damage to the
equipment and/or loss of data.
2.1.2 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.
X20+ GPS – 1.01 Rev A – September 2010
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Overview
Single Lithium-ion rechargeable battery
RS232 port for configuration and USB port for static Data
4GB Internal Memory for data storage
PPK survey
2.2 Features
The X20+ receiver provides the following features:
Downloading
2.3 Specifications
Static
Horizontal: ± (5mm+1ppm) RMS
Vertical: ± (10+2ppm) RMS
Baseline Length: ≤10km
Post-Processed Kinematics (PPK) Solution*
Horizontal: ± (10cm+1ppm) RMS
Vertical: ± (20cm+1ppm) RMS
Update Rate: 1Hz
Physical Reference
Size (H×D): 60mm×150mm
Weight: 0.8Kg (Battery Included)
Electrical Reference
Power Consumption: 1.8W
Battery Volume: 2400mAh
Battery Life: 8.5 Hours,1000 Recharges
External Power: 9-18VDC
Environment
Working Temperature: -30 °C — +65 °C
Storage Temperature: -40 °C — +75 °C
Humidity: 100% condensation
Waterproof and Dustproof: IP67, protected from temporary
immersion to depth of 1 meter, floating.
Shock and Vibration: Survive from 2 meters drop onto concretes
Characteristics
Buttons and Display: 1 buttons/3LED lights
I/O: RS232
X20+ GPS – 1.01 Rev A – September 2010
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Overview
Channel: 12 Channels*
*Performance depends on environmental conditions
* Channel Configuration:
12 channels L1 C/A code (SBAS is not activated)
10 channels L1 C/A code, 2 channels SBAS (SBAS is activated)
X20+ GPS – 1.01 Rev A – September 2010
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Preparation
Equipment Description
Batteries and Power
Parts of the Receiver
Item
Picture
CHC X20+GPS Receiver
Lithium Battery
Battery Charger
Power Adapter with Cord
GPS to PC Data Cable
H.I. Tape
Connector
Static Kit Basic Supply
3 Preparation
3.1 Equipment Description
The tables below provide an overview of the different items
composing the CHC X20+.
Depending on the different purchase, you may have some of the
listed items. Basic Supply is the standard accessories for each kit.
Transportation Cases Option and Accessories Options are
depending on different orders’ requirements.
X20+ GPS – 1.01 Rev A – September 2010
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Preparation
Item
Picture
Transport Case
Carry Pouch
Metal Transport Case for
Poles and Antenna
Item
Picture
Double Bubbles Tribranch with
High Adapter
Single Bubble Tribranch with
Lower Adapter
External Power Cable
2 Meter Range Pole
Transportation Cases
Options
Accessories Options
X20+ GPS – 1.01 Rev A – September 2010
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Preparation
Do not charge or use the battery if it appears to be damaged
Charge the Lithium-ion battery only in a CHC product that is
Discontinue charging a battery that gives off extreme heat or
Use the battery only in CHC equipment that is specified to
Use the battery only for its intended use and according to
Do not use or charge the battery if it appears to be damaged.
Do not expose the battery to fire, high temperature, or
Do not immerse the battery in water.
Do not use or store the battery inside a vehicle under hot
Do not drop or puncture the battery.
Do not open the battery or short-circuit its contacts.
3.2 Batteries and Power
WARNING-Charge and use the rechargeable Lithium-ion battery
only in strict accordance with the instructions. Charging or using
the battery in unauthorized equipment may cause an explosion or
fire, and result in personal injury and/or equipment damage.
To prevent injury or damage:
or leaking.
specified to charge it. Be sure to follow all instructions that
are provided with the battery charger.
a burning odor.
use it.
the instructions in the product documentation.
WARNING –Do not damage the rechargeable Lithium-ion battery.
A damaged battery may cause an explosion or fire, and result in
personal injury and/or property damage.
To prevent injury or damage:
Signs of damage include, but are not limited to, discoloration,
warping, and leaking battery fluid.
direct sunlight.
weather condition.
WARNING-Avoid contact with the rechargeable Lithium-ion battery
if it appears to be leaking. Battery fluid is corrosive, and contact
with it may result in personal injury and/or property damage.
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Preparation
If the battery leaks, avoid with the battery fluid.
If battery fluid gets into your eyes, immediately rinses your
If battery fluid gets onto your skin or clothing, immediately
In the office, the Power Adapter is connected with AC power
In the field, the external power cable is connected with the
Figure3.2-1
Figure3.2-2
To prevent injury or damage:
eyes with clean water and seek medical attention. Please
do not rub your eyes!
use clean water to wash off the battery fluid.
3.2.1 External Power and Internal Battery
The receiver can be powered by its internal battery or by an
external power source connected to Receiver Lemo Port. If an
external power source is connected to Port, it is used in preference
to the internal battery. When there is no external power source
connected, or if the external power supply fails, the internal battery
is used.
External Power
There are two methods to provide the external power to the
receiver by the CHC GPS to PC cable. The CHC GPS to PC cable has
one Power port.
of 100-240V, the output port of the Power Adapter connects
with the Power Port of the GPS to PC cable, shown as
Figure3.2-1.
Car battery, the output port of the external power cable
connects with the Power Port of the GPS to PC cable, shown
as Figure3.2-2.
Internal Battery
These receivers use a rechargeable lithium-ion battery.
Make sure the battery is fully charged for each CHC X20+ being used
in the field.
X20+ GPS – 1.01 Rev A – September 2010
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Preparation
Connect the two parts of the Power Adapter and the Power
Put battery on the battery charger in right orientation (the
There are three LED on the Battery Charger, shown as C.
Fully charge all new batteries prior to use.
Do not allow the batteries to discharge below 5 V.
Keep all batteries on continuous charge when not in use.
Do not store batteries in the receiver or external charger
3.2.2 Charging the battery
The receiver is supplied with one rechargeable Lithium-ion battery,
and a dual battery charger for each kit. The two batteries can be
charged sequentially and take approximately three hours each to be
fully charged.
The battery charger comes with a separate universal AC Power
Adapter with a 1.5 meter output cable. Follow the instructions
below to operate the charger.
Adapter output with the Battery Charger. The red LED on
the Battery Charger is on, which means the whole charger
system is ready.
battery terminals should come into contact with the two
sets of connectors on the charger). When the battery is
placed in the right place, the Green/Yellow LED will start to
flash or turn on.
The middle red LED means the power condition of the
Charger. The other Green and Yellow LED represent the
working condition of two charger slot respectively. When
the Green/Yellow LED is flashing, it means the battery is on
charging, and the slower tells the less battery is going to be
charged in, in other words, when a fully charged battery is
put on the battery slot, the Green/Yellow LED will turn on
and no flashing.
3.2.3 The Battery Usage and Disposing Notices
The rechargeable Lithium-ion battery is supplied partially charged.
The following recommendations provide optimal performance and
extend the life of your batteries:
Batteries may be kept on charge indefinitely without
damage to the receiver or batteries.
unless power is applied.
X20+ GPS – 1.01 Rev A – September 2010
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Preparation
If you must store the batteries, fully charge them before
Figure3.3-1
storing and then recharge them at least every three
months.
Disposing of the rechargeable Lithium-ion battery
Discharge the lithium-ion battery before disposing of it. When
disposing of the battery, be sure to do so in an environmentally
sensitive manner. Adhere to any local and national regulation
concerning battery disposal or recycling.
3.3 Parts of the Receiver (control panel)
3.3.1 Front panel view
Power button
To turn on X20+GPS, hold the power button pressed until the power
lights up.
Power LED
This indicator is on when X20+GPS is on, and off when it is off.
Satellite LED
When you have turned on X20+GPS, the satellite LED will flash. If
it lasts blinking 5 times in some seconds then put off, it means the
receiver has caught 5 satellites.
Record LED
The record LED will be flashing when X20+GPS is working. The
interval of flashing is the same as the configuration you set on the
sample interval.
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Preparation
Figure3.3-2
3.3.2 Bottom view
RS232 serial port
RS232 serial port allows you to connect X20+GPS to PC through USB
cable.
Adaptor
Connecting X20+GPS to tripod
Battery Compartment
Please put CHC made battery into the compartment properly and
make sure the battery away from fire.
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Setting up the Receiver as Static
You need a tripod to install the base.
Put receiver on the control point and then do leveling off
1. Using the H I measurement tool provided, perform a slant
2. Measuring the height through the three directions.
Figure4-1
Figure4.1-1
4. Setting up the Receiver as Static
Prerequisites:
and centering.
Note: X20+ is not RTK base, it used in Static and post processing.
Mount the different items as shown on the picture.
4.1 Setup Receiver
measurement of the antenna height (Blue line in the middle of
antenna).
4.2 Collect the Static Data
For X20+ receiver you just turn on it and then the receiver will
collect the static data.
When the collecting time is enough, measure the slant height for
three directions again before turn off the receiver.
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5. Configuration
5.1 Static configuration
First, connect X20+GPS to your computer through RS232 cable, then
run the software HC-loader. Click link icon to make the receiver
connected with computer and then click setup icon to set the
sample interval and mask degree of the receiver, make sure Data
Log-Auto and Port Configuration-Normal Mode, then switch the
receiver off after you click Apply
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5.2 NMEA 0183 output configuration
First, connect X20+GPS to your computer through RS232 cable, then
run the software HC-loader. Click link icon to make the receiver
connected with computer and then click setup icon to set the
sample interval and mask degree of the receiver, make sure Data
Log-Manual and Port Configuration-NMEA0183 Format, then switch
the receiver off after you click Apply. Note: NMEA 0183 Format
here is only GPGGA 1HZ 9600baudrate SBAS mode on.
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5.3 PPK configuration-Base Part and Rover Part
Base part
First, connect X20+GPS to your computer through RS232 cable, then
run the software HC-loader. Click link icon to make the receiver
connected with computer and then click setup icon to set the
sample interval and mask degree of the receiver, make sure Data
Log-Auto and Port Configuration-Normal Mode and Sample Interval
-1s , then switch the receiver off after you click Apply
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Rover Part
First, connect X20+GPS to your computer through RS232 cable, then
run the software HC-loader. Click link icon to make the receiver
connected with computer and then click setup icon to set the
sample interval and mask degree of the receiver, make sure Data
Log-Manual and Port Configuration-Export the Raw Data, then
switch the receiver off after you click Apply
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6. Download static data from X20+ receiver
1. Switch on X20+ and connect X20+ with PC by USB cable. After a
2. Double click Removable Disk and you will see Folder
while, you will see Removable Disk appear on your PC.
201209017(this folder and its date are created by X20+
automatically, its date is decide by the GPS time when you start
to do static rather than your local time. )
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3. Double click Folder 20120917 and you will see 2 static data
102557257A0 and 102557257A1.
Installation of the CHC PPK Software in PDA
Launch the HCDiff to carry out Surveying Project
Figure7.1-1
102557 is the SN of the X20+, 257 is GPS days, A0 is the first
static data you collected on the first session and A1 is the
second static data you collected on the second session.
Note: If you want to import the data into 3rdpart software, please
converted them into RINEX first.
7. PPK surveying
7.1 Installation of the CHC PPK Software in PDA
CHC PPK software is installed in CAB format. Copy the installation
file to PDA and double click the file, then the software will install
automatically.
The default installation path is My Device->Program Files->HCDiff.
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7.2 Launch the HCDiff to carry out Surveying Project
Figure7.2-1
Figure7.2-2
7.2.1 Establish Bluetooth Connection with X20+ GPS
Double click the HCDiff and open the main software. Go to
File->New to key in the Job name and Time Zone.
Tap set->Com configuration. Please select the connection type
and GPS type.
Direct mode is for cable connection
Use Bluetooth is for Bluetooth connection
GPS Type: X20+C
Select use the Bluetooth->tap option to search the GPS device and
bound it.
Click set->antenna height to set the antenna information.
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7.2.2 Carrying out PPK surveying
Setting
Int.time(s)
Col.time
PntFlagFreq(s)
Explain
The initialize
time
The time of
surveying
time
The point flag frequency
when surveying point
Figure7.2-4
Figure7.2-3
Tap set->Init setup; please do setting the PPK surveying.
Also you can define the environment of survey by tapping
Set->Quality control setup.
Start PPK surveying
Tap Set->Active GPS, and then click Collect.
First, tap initialize and the default setting of the initialize time is
100s.(180s is recommended for X20+)
Put the X20+ in an open area and fix the Rover, then click Initialize,
waiting for the initialization.
Second; tap line collect and point collect to carry out your job.
Simple Mode: the point name and line name will be added
automatically.
Point collect: tap Point collect.
Point name: Point 1
Time, End point collect.
Normal Mode: you can define the point name and measure
time(Note: 120s is recommended for X20+ for collecting 1 point).
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Line collect: tap line collect to start the line collecting. Tap line
The PtFlag is the
points on the line
Figure7.2-5
collect again to finish the Line collecting.
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7.2.3 Post process the PPK data in CGO
For Post Process PPK data, please refer to CGO user guide.
Last review by Johnny 29thAug 2013
More qustions please send email to support@chcnav.com, or
add skpye to get online support:
Skpye ID: chc_support
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