e-survey CORS System Net 20 Plus User manual

www.esurvey-gnss.com
NEX S800A
GNSS Receiver
User Manual
CORS System
Net20 Plus
User Manual-v1.0

Net20Plus GNSS Receiver –User Manual 2
Contents
Statement.......................................................................................................... 1
1. Technical Specification........................................................................ 4
1.1 Overview..........................................................................................................................4
1.2 Main features.................................................................................................................4
1.3 Technical Specifications ............................................................................................4
1.3.1 Physical.........................................................................................................................4
1.3.2 Environmental............................................................................................................4
1.3.3 Electrical .......................................................................................................................4
1.3.4 GNSS..............................................................................................................................5
1.3.5 Ports...............................................................................................................................6
1.3.6 Data and Storage .....................................................................................................6
2. Hardware Structure ............................................................................. 7
2.1 Receiver appearance ..................................................................................................7
2.1.1 Front panel..................................................................................................................7
2.1.2 Back panel ...................................................................................................................9
2.2 Structural drawings / mounting dimensions.................................................10
3. WEB UI................................................................................................. 11
3.1 Summary ...................................................................................................................... 12
3.2 System Information.................................................................................................. 13
3.2.1 System Information.............................................................................................. 13
3.2.2 GPS Status................................................................................................................14
3.2.3 Satellites.................................................................................................................... 14
3.2.4 Data Transmission.................................................................................................15
3.2.5 Data Recording ...................................................................................................... 16
3.3 Configuration ............................................................................................................. 17
3.3.1 Reference Station.................................................................................................. 17
3.3.2 GNSS configuration.............................................................................................. 18
3.3.3 Tracking satellites.................................................................................................. 19
3.3.4 Network.....................................................................................................................20
3.3.5 Ntrip Server.............................................................................................................. 22
3.3.6 Recording .................................................................................................................23
3.3.7 Port Configuration................................................................................................ 25
3.3.7.1 Bluetooth............................................................................................................... 26
3.3.7.2 COM1......................................................................................................................27
3.3.7.3 SOCKET .................................................................................................................. 28
3.3.8 Alerts........................................................................................................................... 29

Net20Plus GNSS Receiver – User Manual 3
3.3.9 Registration.............................................................................................................. 29
3.4 Download..................................................................................................................... 30
3.5 System Management .............................................................................................. 31
3.6 Help ................................................................................................................................31
4. Operation ............................................................................................ 32
4.1 Power on ...................................................................................................................... 32
4.2 Quick setting...............................................................................................................33
5. Accessories .......................................................................................... 38

Net20Plus GNSS Receiver – User Manual 4
1. Technical Specification
1.1 Overview
Net20Plus is a high-precision CORS reference station receiver. LINUX system
as its development platform, and it supports for secondary development. It
has powerful and stable function, and can be used in many fields.
1.2 Main features
•336 channels with Multi-constellation GNSS support.
•Superior carrier phase observations of less than 1mm accuracy
•Internal battery for more than 20 hours operation.
•4G LTE and Bluetooth / WLAN datalink support.
•Easy configuration from webUI and remote server.
•NTRIP server/caster support.
1.3 Technical Specifications
1.3.1 Physical
Weight：2KG
Dimension：222mm*164mm*79mm
1.3.2 Environmental
•Operating temperature：-30℃-65℃
•Storage temperature：-40℃-70℃
•Humidity：0%-100% non-condensing
1.3.3 Electrical
Input：9-28V
Power：2.8W

Net20Plus GNSS Receiver – User Manual 5
1.3.4 GNSS
(1)Channels：336
(2)Tracking signals:
(3)GPS：L1 C/A, L2E, L2C, L5
(4)GLONASS：L1 C/A, L2C/A, L3 CDMA
(5)BeiDou：B1, B2, B3
(6)Galileo：E1, E5a, E5b, E5 AltBOC, E6
(7)NAVIC：L5
(8)SBAS：L1, L5
(9)QZSS：L1 C/A, L1SAIF, L1C, L2C, L5
（3）Positioning accuracy
Table 1-1 Positioning accuracy
Positioning mode
Accuracy
Horizontal
Vertical
static
2.5mm + 1ppm 5mm + 1ppm
RTK
8mm + 1ppm
15mm + 1ppm
（4）initialization time：＜10s
（5）initialization reliability：＞99.9%

Net20Plus GNSS Receiver – User Manual 6
1.3.5 Ports
3 RS232 serial ports(DB9 and 2 LEMO 5pin).
1 RJ45 Ethernet port.
1 power port.
1 USB port.
1 4G LTE antenna port.
1 UHF antenna port.(Optional)
1 EVENT port.
1 1PPS port.
1 SIM card slot.
1 GNSS antenna port.
1.3.6 Data and Storage
Output data format: NMEA-0183，binary，RINEX, RTCM2.x,
RTCM3.x
Internal memory：32G
External storage：32G

Net20Plus GNSS Receiver – User Manual 7
2. Hardware Structure
2.1 Receiver appearance
Figure 2-1
2.1.1 Front panel
The front panel of Net20Plus receiver includes seven buttons, four LED
indicators, and one OLED display.
Figure 2-2

Net20Plus GNSS Receiver – User Manual 8
After switching on Net20Plus receiver, current time information and GPS
status are displayed in the main interface. The default language is English,
and you can press the left and right arrow keys to obtain the current IP
information.
Table 2-1 Function table
Name
Function
F1
Save the current setup and return to the previous
menu
F2
Enter the main menu
Move the cursor up and down, modify parameters
when entering modify items
Move the cursor left and right
Power key
Switch on/off the receiver and confirmation key
Bluetooth
indicator
It will be light blue when Net20Plus is connected
via Bluetooth
Differential
transmission
indicator
When the differential data output, the differential
indicator blinks evenly at 1-second interval
Static recording
indicator
When start static recording, static recording indicator
blinks evenly at 1-second interval
Power indicator
After switching on Net20Plus receiver, the power
light is on

Net20Plus GNSS Receiver – User Manual 9
2.1.2 Back panel
Net20Plus receiver provides a variety of communication interfaces to
facilitate users in different application scenarios.
Figure 2-3 Back panel
Table 2-2 Interface function table
No.
Name
Function
1
PWR
Receiver power supply interface, input voltage
DC 9V-28V.
2
USB
USB interface
3
COM1
RS232 serial port
4
COM2
RS232 serial port（Optional RS485 serial port）
5
COM3
DB9 serial port
6
LTE
GPRS antenna interface
7
1PPS
1 Pulse Per Second output
8
EVENT
EVENT input
9
SIM
Standard size SIM card interface
10
RJ45
Wired Ethernet port
11
GNSS
GNSS External receiver antenna connector
12
UHF
UHF External receiver antenna connector
Note:
The UHF interface is optional.

Net20Plus GNSS Receiver – User Manual 10
2.2 Structural drawings / mounting dimensions
(Dimensions in mm)
Figure 2-4

Net20Plus GNSS Receiver – User Manual 11
3. WEB UI
There are two ways to login into the WEB interface, which are Ethernet port
login and WIFI login. The WEB interface content of the two login modes is
same.
（1）Ethernet port login: Connect the RJ45 network port with the computer
host and enter the IP address in the browser. Enter user name and password
in the pop-up dialog box;the default username is admin and the default
password is password.
（2）WIFI login: when Net20Plus WIFI hotspot is enable, the user can log in
into the WEB interface by connecting to its WIFI network. The hotspot name
is the serial number of the receiver. Enter the IP address: 192.168.10.1, a
window will pop up, the default username is admin and the default password
is password.

Net20Plus GNSS Receiver – User Manual 12
3.1 Summary
After a succesful authentication to the WEB interface of Net20Plus, the main
page contents: Reference information, device version, system version,
network parameters, memory status and so on. It is shown as below:
Figure 3-1
Note: The effect of different browsers display may be slightly different,
recommend using Google Chrome or IE.

Net20Plus GNSS Receiver – User Manual 13
3.2 System Information
3.2.1 System Information
The system information screen will display the station name, device model,
device serial number, system version, application version information, built-in
OEM board model and network parameter information.
Figure 3-2

Net20Plus GNSS Receiver – User Manual 14
3.2.2 GPS Status
The GPS Status page displays the current Net20Plus positioning, the base
station coordinates and antenna type.
Figure 3-3
3.2.3 Satellites
This page shows the current satellite signal-to-noise ratio, elevation mask
angle, azimuth and other information. The information of GPS, BEIDOU,
GLONASS and GALILEO are displayed separately.
Figure 3-4

Net20Plus GNSS Receiver – User Manual 15
3.2.4 Data Transmission
After setting up the data transmission, the user can see the current data
transfer status on the page as shown in figure 3-5. Click [Edit] to directly jump
to [Ntrip Server].
Figure 3-5

Net20Plus GNSS Receiver – User Manual 16
3.2.5 Data Recording
In this page, the user can see the specific data recording information as shown
in figure 3-6. Click [Edit], the user could modify the parameters like path type,
file name, interval, duration time, etc. as shown in figure 3-7.
Figure 3-6
Figure 3-7

Net20Plus GNSS Receiver – User Manual 17
3.3 Configuration
3.3.1 Reference Station
On this page the user mainly can set the reference station, antenna, coordinate
system and station coordinates, as shown in figure 3-8.
Figure 3-8
Reference station coordinates: If you do not need known coordinates to
startthe reference station, then click on "Load Current Position" to get the
reference station coordinates approximately. However, if you need known
coordinates, please input them according to to the appropriate format.
The web access port is 80. After setting mapping in the router device, then
you can access the Net20Plus by Internet, enter the ip address and the
port, e.g. 113.109.179.180:80

Net20Plus GNSS Receiver – User Manual 18
3.3.2 GNSS configuration
This menu is mainly for the satellite systems and the cutoff angle settings, as
shown in figure 3-10.
Figure 3-10

Net20Plus GNSS Receiver – User Manual 19
3.3.3 Tracking satellites
In this page, the user can select the satellites they want to track, as shown in
figure 3-11.
Figure 3-11

Net20Plus GNSS Receiver – User Manual 20
3.3.4 Network
From Network option, the user can set the device network and FTP server
settings as shown in figure 3-12.
Figure 3-12
DHCP：If the mode DHCP is enable, the Net20Plus receiver will auto get
an IP address, otherwise it uses the static IP.
WIFI hotspot: If WIFI hotspot option is enable, then you can use other
devices equipped with WIFI to search and connect to the Net20Plus receiver.
The hotspot is named by the serial number of the receiver. You don’t
need to input a password. Access Net20Plus by IP address 192.168.10.1.
The hotspot only play the role of control and can’t access tointernet.
WIFI Client: When selecting WIFI client, in SSID box input a name of WIFI
hotspot can be used for the search, and in the Password box input the
password for connecting to WIFI hotspot, then submit. After connecting to the
connection WIFI, the password can be seen in system terminal or panel
interface (the displayed place will be different in different versions).