SEPTENTRIO PolaRx5S User manual

PolaRx5S
User Manual

User Manual Version 1.0.2
Applicable to versions 5.0.1 and 5.0.2 of the PolaRx5S Firmware
May 02, 2016
Thank you for choosing the PolaRx5S! This user manual provides detailed instructions
on how to use PolaRx5S and we recommend that you read it carefully before you start using
the device.
Please note that this manual provides descriptions of all functionalities of the PolaRx5S
product family. However, the particular PolaRx5S options you purchased may not support
all the functions described.
While we try to keep the manual as complete and up-to-date as possible, it may be
that future features, functionality or other product specifications change without prior
notice or obligation. The information contained in this manual is subject to change without
notice.
© Copyright 2000-2016 Septentrio NV/SA. All rights reserved.
Septentrio
Greenhill Campus, Interleuvenlaan 15i
B-3001 Leuven, Belgium
http://www.septentrio.com
support septentrio.com
Phone: [phone]
Fax: [phone]
Septentrio
2

LIST OF CONTENTS
List of Contents
1Introduction 6
1.1 USER NOTICES ............................................................................... 6
1.1.1 CE Notice ........................................................................... 6
1.1.2 ROHS/WEEE Notice................................................................ 6
1.1.3 Safety information ................................................................ 6
1.1.4 Support ............................................................................. 7
2 PolaRx5S overview 8
2.1 KEY FEATURES ............................................................................... 8
2.1.1 GNSS Technology.................................................................. 8
2.1.2 Formats............................................................................. 9
2.1.3 Connectivity........................................................................ 9
2.2 HARDWARE SPECIFICATIONS ............................................................... 10
2.2.1 Power Consumption .............................................................. 10
2.2.2 Physical and Environmental ..................................................... 10
2.3 POLARX5S DESIGN .......................................................................... 11
2.3.1 Front panel......................................................................... 11
2.3.2 Rear panel.......................................................................... 11
2.3.3 Powering the Receiver............................................................ 12
2.3.4 Power Button ...................................................................... 12
2.3.5 WiFi Button......................................................................... 12
2.3.6 Internal memory .................................................................. 12
2.3.7 External memory.................................................................. 12
2.4 OPTIONS AND ACCESSORIES ............................................................... 13
2.4.1 Standard shipment................................................................ 13
2.4.2 Optional items ..................................................................... 13
3 Getting started with the PolaRx5S 14
3.1 POWERING THE POLARX5S ................................................................ 14
3.2 CONNECTING AN ANTENNA ................................................................ 14
3.3 CONNECTING TO THE POLARX5S VIA THE WEB INTERFACE ............................. 15
3.3.1 Using the USB cable .............................................................. 15
3.3.2 Over WiFi ........................................................................... 17
3.3.3 Using the Ethernet cable ......................................................... 19
4 Scintillation monitoring with the
PolaRx5S 20
4.1 HIGH-LEVEL OPERATION OVERVIEW ...................................................... 20
4.2 CONFIGURING RXLOGGER.................................................................. 20
4.2.1 Connecting To the Receiver...................................................... 20
4.2.2 Selecting file names and directories............................................ 21
4.2.3 Selecting the set of raw data to log ............................................. 24
3

LIST OF CONTENTS
4.2.4 Configuring the post processing options ...................................... 25
4.2.5 Monitoring logging and ISMR status............................................ 28
4.2.6 Compressing the raw SBF files .................................................. 29
4.2.7 Exiting and restarting RxLogger................................................. 30
4.2.8 Starting RxLogger from the command line .. ... . . ... . ... . . ... . . ... . . ... . ... . . . 30
4.3 SBF2ISMR PROGRAM ........................................................................ 31
4.3.1 ISMR Record Details .............................................................. 34
4.3.2 Monitoring the Current Scintillation Status with sbf2ismr. . . ... . . ... . . ... . .. 38
4.3.3 Parsing the Raw Data ............................................................. 38
5 Receiver Monitoring 39
5.1 BASIC OPERATIONAL MONITORING ........................................................ 39
5.2 AIM+: USING THE SPECTRUM ANALYSER TO DETECT AND MITIGATE INTERFERENCE . . 41
5.2.1 Narrowband interference mitigation ..... . . ... . . ... . .... . ... . . ... . . ... . . ... . ... 42
5.2.2 Wideband interference mitigation.............................................. 43
5.3 HOW TO LOG DATA FOR PROBLEM DIAGNOSIS............................................ 45
5.4 ACTIVITY LOGGING .......................................................................... 47
6 Security 48
6.1 HOW TO MANAGE ACCESS TO THE POLARX5S ............................................ 48
7 Receiver operations 51
7.1 HOW TO TRACK SPECIFIC SATELLITES AND SIGNALS ...................................... 51
7.2 HOW TO CHANGE IPSETTINGS OF THE POLARX5S ....................................... 52
7.3 HOW TO CONFIGURE DYNAMICDNS ...................................................... 53
7.4 HOW TO UPGRADE THE FIRMWARE OR UPLOAD A NEW PERMISSION FILE .............. 54
7.5 HOW TO SET THE POLARX5S TO ITS DEFAULT
CONFIGURATION ............................................................................ 56
7.6 HOW TO RESET THE POLARX5S ............................................................ 56
7.7 HOW TO COPY THE CONFIGURATION FROM ONE RECEIVER TO ANOTHER .............. 57
Appendix A Front-panel port descriptions 59
A.1 COM1 ........................................................................................ 59
A.2 COM2 ........................................................................................ 59
A.3 COM3-4/USB ............................................................................... 60
A.4 ETHERNET .................................................................................... 60
A.5 OUT .......................................................................................... 61
A.6 IN............................................................................................ 61
A.7 USB HOST ................................................................................... 61
A.8 PWR ......................................................................................... 62
Appendix B Rear-panel connectors 63
B.1 MAIN (TNC) ................................................................................ 63
B.2 PPS OUT (BNC) ............................................................................ 63
B.3 REF OUT (BNC)............................................................................. 63
B.4 WIFI(SMA).................................................................................. 63
Appendix C Cables 64
Appendix D LED behaviour 65
4

LIST OF CONTENTS
Appendix E Power Failover 66
E.1 POWER FAILOVER CONNECTORS ........................................................... 67
E.1.1 MAINS-ADAPTER................................................................... 67
E.1.2 BATTERY ............................................................................ 67
E.1.3 CHARGER ........................................................................... 67
E.1.4 RECEIVER ........................................................................... 67
E.2 POWER FAILOVER CONNECTORS ........................................................... 68
E.3 POWER FAILOVER HARDWARE SPECIFICATIONS .......................................... 68
Appendix F 100 Hz Output Rate 69
Appendix G Real-Time ISMR 70
Appendix H TEC Calibration 71
Appendix IRxTools 76
I.1 INSTALLING RXTOOLS ...................................................................... 76
5

1Introduction
1.1 User Notices
1.1.1 CE Notice
PolaRx5S receivers carry the CE mark and are as such compliant with the
2004/108/EC - EMC Directive and amendments, 2006/95/EC - Low Voltage
Directive, both amended by the CE-marking directive 93/68/EC.
With regards to EMC, these devices are declared as class B, suitable for
residential or business environment.
1.1.2 ROHS/WEEE Notice
PolaRx5S receivers comply with European Union (EU) Directive 2002/95/EC
on the restriction of the use of certain hazardous substances in electrical
and electronic equipment (RoHS Directive).
PolaRx5S receivers comply with the European Union (EU) Directive
2002/96/EC on waste electrical and electronic equipment (WEEE). The
purpose of this Directive is the prevention of waste electrical and electronic
equipment (WEEE), and in addition, the reuse, recycling and other forms of
recovery of such wastes so as to reduce the disposal of waste. If purchased
in the European Union, please return the receiver at the end of its life to
the supplier from which it was purchased.
1.1.3 Safety information
Statement 1: The power supply provided by Septentrio (if any) should not
be replaced by another. If you are using the receiver with your own power
supply, it must have a double isolated construction and must match the
specifications of the provided power supply.
Statement 2: Ultimate disposal of this product should be handled
according to all national laws and regulations.
Statement 3: The equipment and all the accessories included with this
product may only be used according to the specifications in the delivered
release note, manual or other documents delivered with the receiver.
6

1.1. USER NOTICES
1.1.4 Support
For first-line support please contact your PolaRx5S dealer.
Additional documentation can be found in the following manuals:
•The PolaRx5S Reference Guide includes information on the receiver operation, the
full list of receiver commands and a description of the format and contents of all SBF
(Septentrio Binary Format) blocks.
•The RxControl Manual covers the RxTools software suite, including RxControl and
RxLogger.
Further information can be found on our website or by contacting Septentrio Technical
Support.
http://www.septentrio.com
support septentrio.com
Europe
Septentrio NV Phone: [phone]
Greenhill Campus Fax: [phone]
Interleuvenlaan 15i, sales septentrio.com
3001 Leuven,
Belgium
North and South America
Septentrio Inc. Phone: [phone]
23848 Hawthorne Blvd. sales septentrio.com
Suite 200
Torrance, CA 90505
USA
Asia-Pacific
Septentrio Phone: [phone]
Level 901, The Lee Gardens sales septentrio.com
33 Hysan Avenue,
Causeway Bay
Hong Kong
7

2 PolaRx5S overview
The PolaRx5S is a multi-frequency multi-constellation receiver dedicated to ionospheric
monitoring and space weather applications.
The PolaRx5S incorporates a state-of-the-art multi-frequency receiver engine and an ultra
low noise OCXO frequency reference in a rugged housing. The housing provides a multitude
of interfaces including WiFi, USB and Ethernet.
An intuitive User Graphical Interface is provided for data logging and remote control.
Designed with space weather and ionospheric monitoring applications in mind, the logging
tool (RxLogger) supports continuous logging and monitoring of TEC and scintillation indices.
Available indices include the S4, σφ, spectral slope and SIindices for all satellite constellations
and frequency bands.
2.1 Key features
•Tracks all visible GNSS signals (GPS, GLONASS, Galileo, BeiDou, IRNSS, QZSS and SBAS)
•High precision, ultra-low noise measurements
•Unique interference monitoring and mitigation
•Powerful web interface and logging tools
•Rugged housing with multiple interfaces
•Up to 8 independent logging sessions
•Logging both internally and to an external device
•Low-jitter internal OCXO (Oven-Controlled Crystal Oscillator)
•Logging and monitoring of TEC (Total Elector Content) and scintillation indices including S4
and σφ
2.1.1 GNSS Technology
•544 hardware channels for simultaneous tracking of all visible satellite signals
•Supported signals: GPS (L1, L2, L5), GLONASS (L1,L2,L3), GALILEO (E1, E5a, E5b, AltBoc, E6),
BEIDOU (B1, B2, B3), IRNSS (L5), QZSS (L1, L2, L5)
(Galileo, BeiDou and IRNSS are optional features)
•All-in-view SBAS (EGNOS, WAAS, GAGAN, MSAS, SDCM) (incl. L5 tracking)
•Up to 100Hz Raw data output (code, carrier, navigation data)
(optional feature)
•A Posteriori Multipath Estimator (APME+) including code and phase multipath mitigation
•AIM+/WIMU interference mitigation unit, including chirp jammers
•Scalable Power Consumption
•All multipath mitigation and smoothing algorithms can be disabled
•Spectrum analyzer
•100 Hz IQ correlation values (user selectable)
8

2.1. KEY FEATURES
2.1.2 Formats
•Highly compact and detailed Septentrio Binary Format (SBF) output
•NMEA v2.30 and v4.10 output format
•Includes intuitive GUI(RxControl, web interface and RxTools) accompanied by detailed
operating and installation manual
•ISMR (Ionospheric Scintillation Monitoring) file generation using the provided sbf2ismr
utility
2.1.3 Connectivity
•x PPS output (max 100Hz)
•4 hi-speed serial ports
•1 Ethernet port (100MBps)
•Integrated WiFi (802.11 b/g/n)
•Power-Over-Ethernet
•1 full speed USB port
•1 USB host for external disk
•16 GB standard on-board logging
•Up to 8 simultaneous logging sessions
•Advanced web interface providing full receiver control
•Status monitoring, ftp server, ftp push
•Ntrip server and client
•Convenient TCP/IP socket interface for easy integration with other software applications
9

2.2. HARDWARE SPECIFICATIONS
2.2 Hardware Specifications
2.2.1 Power Consumption
The power consumption of the PolaRx5S depends on its configuration. The following settings
directly influence the amount of power consumed:
•The number of enabled GNSS frequency bands. For example, a receiver configured
to track signals only in the L1 and L2 bands will consume less than a receiver
configured to track in the L1, L2 and L5 bands. Use the setSignalTracking command
to enable/disable signals. Note that a given frequency band is disabled only when all
GNSS signals in that band are disabled.
•Activation of the Ethernet interface: in power-critical applications, it is recommended
to not use Ethernet and to turn offthe associated hardware. This can be done with the
setEthernetMode command.
•Activation of the WiFi interface: use the setWiFiMode command or press the WiFi
button to turn the WiFi module offor on.
•The REF OUT frequency reference output: in power-critical applications, REF OUT can
be turned offwith the setREFOUTMode command.
The following table shows the nominal power consumption measured when 12 VDC is
supplied to the PWR connector:
Configuration Power
Consumption*
GPS + GLONASS L1, tracking and PVT 3.8W
GPS + GLONASS L1/L2, tracking and PVT 3.9W
GPS L1/L2/L5, GLO L1/L2, GAL E1/E5a, SBAS L1/L5, BDS B1/B2 4.0W
All constellations and all signals
(enabling GAL E6 and/or BDS B3 increases the power by 650mW) 4.8W
Enabling Ethernet (setEthernetMode command) +650mW
Enabling WiFi (setWiFiMode command) +450mW
Enabling REFOUT (setREFOUTMode command) +30mW
Enabling wide-band interference mitigation (setWBIMitigation command) +160mW
Stand-by mode

1.6W
∗Note that initial power consumption can be 3W higher than the values listed due to
warming up of the internal OCXO.

Stand-by mode is described in Section 2.3.4
2.2.2 Physical and Environmental
Size: 284 x 140 x 37 mm (length including connectors)
Weight: 1.06 kg
Temperature Range: -40 to +65 ◦C (operational)
-40 to +85 ◦C (storage)
Shock: MIL-STD-810F, 516.5
Vibration: MIL-STD-810F, 514.5
10

2.3. POLARX5S DESIGN
2.3 PolaRx5S design
2.3.1 Front panel
The front-panel layout of the PolaRx5S is shown in Figure 2-1. A description of the front-panel
sockets as well as their PIN assignments can be found in Appendix A. The cables available
for use with the PolaRx5S are listed in Appendix C and the LED behaviour is described in
Appendix D.
Figure 2-1: PolaRx5S front-panel layout
2.3.2 Rear panel
Figure 2-2 shows the layout of the rear-panel connectors on the PolaRx5S. More information
on these connectors can be found in Appendix B and on the available cables in Appendix C.
Figure 2-2: PolaRx5S rear-panel layout
11

2.3. POLARX5S DESIGN
2.3.3 Powering the Receiver
The receiver can be powered through either:
•The PWR connector (9-30 VDC)
•The Ethernet connector (Power over Ethernet - PoE, 37-57 VDC). Please note that only
mode A, as specified in the 802.3af standard, is supported.
If power is provided through both the Ethernet and the PWR connectors, Ethernet power
takes precedence. This allows the connection of a back-up battery to the ODU PWR
connector. The battery will only be used in case of an outage of the power over Ethernet.
The current power source (PWR or Ethernet connector), and the voltage at the PWR
connector are reported in the PowerSupply SBF bock.
2.3.4 Power Button
When power is initially applied to the PWR or Ethernet connector, or after a power outage,
the receiver always starts up without the need to press the power button.
Pressing the power button when the receiver is turned on will send the receiver into stand-by
mode. Pressing the button again switches the receiver back on.
In all cases, the state of the power button is not retained across a power outage. If the
receiver was in stand-by mode before the power outage, it will restart when power is
restored.
2.3.5 WiFi Button
The WiFi button toggles the WiFi modem on and off.
When the receiver starts up, WiFi is enabled or disabled according to the settings of the
setWiFiMode command stored in the boot configuration file. When the receiver is operating,
pressing the WiFi button turns WiFi on and offin turn. The red WiFi LED next to the WiFi
button lights when WiFi is enabled.
2.3.6 Internal memory
The PolaRx5S has a 16 GB Memory for internal data logging. Data can be logged in SBF or
RINEX format and may be retrieved via the logging tab of the web interface.
2.3.7 External memory
The PolaRx5S can log data to an external memory device with a maximum capacity of 32 GB.
12

2.4. OPTIONS AND ACCESSORIES
2.4 Options and Accessories
2.4.1 Standard shipment
The GNSS options and accessories included in a standard shipment with the PolaRx5S are
listed in the Table below.
Included
in: Item Part Number Description
PolaRx5S 410128B1593
Multi-frequency GPS/GLO reference receiver
dedicated to ionospheric monitoring and
space weather applications
PolaRx5S PolaRx5S FULL 410128B1595 Includes all GNSS options listed in
Section 2.4.2
receivers
SM_PolaRx5S 410128B1591 PolaRx5S stock model. Activation code is
needed.
PWRe_ADAPTER 200431 Power adapter
CBLe_COM_1.8 200416 COM1/COM2 (DSUB9-female) serial cable
CBLe_ETH_MS 200418 Ethernet to hub/switch cable (RJ45)
CBLe_USB 210202 USB communication cable
Accessories
ANT_AxU_BT_WIFI202163 Bluetooth/WiFi Antenna, Dipole 2.4 GHz
2.4.2 Optional items
The additional GNSS options and accessories available for purchase with the PolaRx5S are
listed in the Table below.
Included
in: Item Part Number Description
Base P2012 Output of RTCM/CMR correction data
Event P2022 Event marker option (2 marker inputs)
GAL P2102 Galileo tracking and measurement
generation
IRNSS P2312 IRNSS L5 tracking and measurement
generation
GNSS
BDS P2252 BeiDou tracking and measurement
generation
CBLe_PWR_OE 200422 Open-ended cable for the PWR connector
CBLe_GPO_OE_5 201203 Open-ended cable to be used with the OUT
connector
CBLe_GPI_OE 200419 Open-ended cable to be used with the IN
connector
CBLe_COM_DUO_7 201204 Dual COM3 and COM4 to PC (DSUB9-female)
CBLe_USB_HOST 214935 USB host cable (e.g. to connect an external
disk)
PWRe_FOPX 410000
Power failover (see Appendix E). Power
source management device that switches
automatically to 12 V battery backup during
main power supply outages.
Accessories
MNTe 201459 Mounting kit for PolaRx5S
13

3 Getting started with the PolaRx5S
This section details how to power-up, connect to and communicate with the PolaRx5S. The
PolaRx5S has an on-board web interface which the user can connect to in three ways:
Ethernet, USB or WiFi. The PolaRx5S is fully configurable using the web interface. Please
note that older versions of certain browsers may not properly display the web interface.
3.1 Powering the PolaRx5S
You can power the PolaRx5S by connecting the power adapter that is supplied as standard
to the front-panel power socket as indicated in Figure 3-1. The receiver will start up without
the need to press the power button.
Figure 3-1: Front-panel power socket
The PolaRx5S can also be powered over Ethernet (PoE) as described in Section 2.3.3 or by
supplying 9 to 30 V via PIN 1 of the open-ended power cable (CBLe_PWR_OE) as detailed in
Appendix A.8.
3.2 Connecting an antenna
The rear panel of the PolaRx5S has a TNC connector labelled MAIN to connect a GNSS
antenna. Connect an antenna to the PolaRx5S using an antenna cable as shown in Figure 3-2.
The connector can provide 5V DC and up to 200 mA to power an antenna (see Appendix B.1
for more information).
Figure 3-2: Rear-panel antenna connector
Before connecting an antenna, the orange front-panel tracking LED will be blinking fast
indicating that it is searching for satellites. After connecting an antenna that has a clear view
of the sky, the PolaRx5S will start to track satellites and the tracking LED will start to blink
more slowly. The number of blinks between pauses indicates the number of satellites being
tracked as described in Appendix D.
14

3.3. CONNECTING TO THE POLARX5S VIA THE WEB INTERFACE
3.3 Connecting to the PolaRx5S via the Web
Interface
You can connect to the receiver on any device that supports a web browser using the
receiver’s on-board Web Interface. The connection can be made over USB, Ethernet or WiFi.
The following sections describe each of the connection methods.
3.3.1 Using the USB cable
Connect the USB cable (CBLe_USB) to the socket labelled ’COM3-4/USB’on the front panel of
the PolaRx5S as indicated in Figure 3-3.
Figure 3-3: Connecting to the front-panel USB socket
The first time that the USB cable is connected to your pc, you may be prompted to allow
installation of drivers which can take several minutes. When the drivers have been installed,
it is recommended to unplug then re-plug in the USB cable on your device to fully activate
the drivers.
If the USB drivers do not install automatically, they can be installed manually by double
clicking on the executable Installer file found in the folder ‘driver’as shown in Figure 3-4
Figure 3-4: Manually installing the USB drivers
15

3.3. CONNECTING TO THE POLARX5S VIA THE WEB INTERFACE
Again, when the drivers have been installed, it is recommended to unplug then re-plug in the
USB cable on your device to fully activate the drivers.
The USB of the PolaRx5S functions as a network adapter and the DHCP server running on
the receiver will always assign the PolaRx5S the IP address 192.168.3.1.
To connect to the PolaRx5S, you can then simply open a web browser using the IP address
192.168.3.1 as shown in Figure 3-5.
Figure 3-5: Connect to the Web Interface of the PolaRx5S over USB using the IP
address 192.168.3.1 on any web browser
16

3.3. CONNECTING TO THE POLARX5S VIA THE WEB INTERFACE
3.3.2 Over WiFi
The Web Interface can also be accessed over a WiFi connection. You can turn on the WiFi
modem of the PolaRx5S by pressing firmly on the WiFi button as shown in Figure 3-6.
Figure 3-6: Press firmly on the front-panel WiFi button to turn on the WiFi
modem. When active, the red WiFi led will be lit.
On your PC or tablet, search for visible WiFi signals: the PolaRx5S identifies itself as a
wireless access point named ’PolaRx5S-serial number’. The serial number of the PolaRx5S
can be found on an identification sticker on the receiver housing. Select and connect to the
PolaRx5S as shown in Figure 3-7.
Figure 3-7: Select the PolaRx5S from the list of detected wireless signals and
connect
17

3.3. CONNECTING TO THE POLARX5S VIA THE WEB INTERFACE
When your PC has connected to the PolaRx5S WiFi signal, you can open a web browser using
the IP address: 192.168.20.1 as shown in Figure 3-8.
Figure 3-8: Connect to the Web Interface of the PolaRx5S over WiFi using the IP
address 192.168.20.1 on any web browser
18

3.3. CONNECTING TO THE POLARX5S VIA THE WEB INTERFACE
3.3.3 Using the Ethernet cable
Connect the Ethernet cable cable (CBLe_ETH_MS) to the socket labelled ’ETH’on the front
panel of the PolaRx5S as shown in Figure 3-9.
Figure 3-9: Connecting to the front-panel Ethernet socket
For the most straightforward setup, the RJ45 socket of the Ethernet cable should be
connected to a network running a DHCP server. The IP address assigned to the receiver
will be associated with the hostname PolaRx5S-xxxxxxx, where xxxxxxx are the 7 digits of the
PolaRx5S serial number. The serial number can be found on an identification sticker on the
receiver housing. You can then make a connection to the receiver using the web address
‘http://PolaRx5S-xxxxxxx’. Figure 3-10 shows a screenshot of an Ethernet connection to a
receiver with serial number 3012439 using ‘http://PolaRx5S-3012439/’.
Figure 3-10: Connecting to the Web Interface over Ethernet
19

4 Scintillation monitoring with the
PolaRx5S
This chapter covers the configuration of the PolaRx5S receiver and the RxLogger tool for
ionospheric scintillation and TEC monitoring.
4.1 High-Level Operation Overview
In a typical setup, the PolaRx5S generates and outputs 50 Hz phase and amplitude samples
for all visible satellites and frequency bands. These samples are logged on a host PC in hourly
files using the provided RxLogger graphical interface tool. At the end of every hour, TEC and
scintillation indices are computed for all visible satellites and logged as comma-delimited
ASCII records.
The receiver can also output S4 and σφindices in real time for all tracked satellites.
Appendices F, G and H provide further information on operating the receiver at 100 Hz,
real-time S4 and σφoutput and, on the TEC calibration tool built into sbf2ismr.
4.2 Configuring RxLogger
Septentrio provides the RxTools suite of GUItools among which is RxLogger. The RxLogger
tool provides and easy and convenient way to log and monitor ISMR data from the PolaRx5S.
A short description of the various RxTools and how to install them can be found in Appendix I.
This section details how to use RxLogger for ISMR file generation.
4.2.1 Connecting To the Receiver
The first time you run RxLogger, you will need to create a new connection. Future
connections will reuse the last connection by default.
Refer to the RxControl Manual for a complete description of the connection options
It is recommended to use one of the two Virtual USB COM port connections to connect
RxLogger to the receiver as shown in Figure 4-1. A TCP/IP (Ethernet) connection can also
be used however, depending on your network topology, this may lead to occasional data
gaps when logging at high rates. The standard serial ports should not be used because
their bandwidth is too low to support the high data throughput required for ionospheric
scintillation monitoring.
20