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LabSat
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3
User Manual
27 pgs1.34 Mb0

LabSat 3 User Manual

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LabSat 3 GNSS Simulator
User Manual
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Contents
Introduction ........................................................................................................................................... 4
How does it work? ..................................................................................................................... 4
Components .......................................................................................................................................... 5
LabSat 3 Front ............................................................................................................................ 5
LabSat 3 Rear ............................................................................................................................. 5
LabSat 3 media ...................................................................................................................................... 6
LabSat 3 file formats .................................................................................................................. 6
LabSat 3 SD Card ........................................................................................................................ 6
LabSat 3 500GB Hard Disk Drive .................................................................................................. 6
LabSat 3 Label ............................................................................................................................ 6
Quick start guide .................................................................................................................................... 7
Menu Layout.......................................................................................................................................... 8
Replay operation in detail ...................................................................................................................... 9
Record operation in detail .................................................................................................................... 10
Navigating the LabSat HDD file layout ................................................................................................... 11
Battery operation and charging ............................................................................................................ 12
Battery fitting, removal and handling ................................................................................................... 13
External reference clock input .............................................................................................................. 14
Digital channels.................................................................................................................................... 14
Expansion connector ............................................................................................................................ 15
CAN Bus ............................................................................................................................................... 16
DIGITIZE mode ......................................................................................................................... 16
LOG FILE mode ......................................................................................................................... 16
Filtering CAN frames ................................................................................................................ 17
Digital in/out ....................................................................................................................................... 18
Remote control .................................................................................................................................... 18
LabSat device registration .................................................................................................................... 18
Ordering information ........................................................................................................................... 19
Optional accessories ................................................................................................................ 19
Converting LabSat scenarios ................................................................................................................. 20
Recommended media .......................................................................................................................... 21
Upgrading LabSat 3 firmware ............................................................................................................... 21
How to upgrade the firmware .................................................................................................. 21
SatGen software .................................................................................................................................. 22
Why use SatGen software? ....................................................................................................... 22
Troubleshooting guide ......................................................................................................................... 23
LabSat 3 specifications ......................................................................................................................... 24
Connector pin data............................................................................................................................... 25
Expansion port 36 way MDR type connector ......................................................................................... 25
LabSat 3 dimensions ............................................................................................................................. 26
Contact information ............................................................................................................................. 27
Introduction
LabSat 3 is a lightweight, portable record and replay system for GNSS testing. With the ability to record real world GNSS signals directly to SD card or HDD storage, the LabSat 3 is a simple to use, fully stand-alone system. Recorded signals can be replayed back by LabSat 3 in the Lab enabling development and testing of most types of GNSS equipment. Alternatively SatGen software can also be used to create simulated GNSS signals from map or user defined trajectory. Despite its simplicity, the LabSat 3 product range supports a number of powerful features for use in industries such as automotive, sports and aerospace including dual RF channels for multiple constellation testing, dual CAN Bus recording, inertial sensor logging and battery powered operation.
Additional features:-
→ Available for GPS, GLONASS, Galileo, BeiDou, QZSS → Simple to use one touch recording → Record or replay using external USB hard drive → RS232, Digital & Dual CAN interface → Remote control over Ethernet → External 10MHz Reference input → OCXO option → OEM version available for system integrators → Digital input for event marking or 1PPS recording → Adjustable attenuation (0 – 31dBm) → On-board GNSS receiver for monitoring RF during record and replay
The LabSat 3 line-up includes a number of variants to suit a range of testing requirements. These are:
Version
Description
RLLS03-3RP
Triple RF channel record & replay system with CAN Bus / RS232 / Digital IO
RLLS03-3P
Triple channel replay only system with CAN Bus / RS232 / Digital IO
RLLS03-2RP
Dual RF channel record & replay system with CAN Bus / RS232 / Digital IO
RLLS03-2P
Dual channel replay only system with CAN Bus / RS232 / Digital IO
RLLS03-1RP
Single RF channel record & replay system
RLLS03-1P
Single RF channel replay only system
How does it work?
GNSS stands for Global Navigation Satellite Systems and is a general term that covers satellite positioning constellations belonging to different countries around the world. These include, among others, the United States ‘GPS’, the Russian ‘GLONASS’ and the Chinese ‘BeiDou’ systems. LabSat 3 is capable of recording and then replaying the raw radio signals that are transmitted by the various constellations of satellites. LabSat 3 receives the signal from an antenna just like a standard GNSS receiver but instead of processing each of the received signals to calculate a position fix, LabSat 3 samples and stores the antenna signal at very high speed. When the stored antenna signal is replayed by LabSat 3 into a standard GNSS receiver such as a portable navigation system, the receiver will see essentially, the same signal that it would see if it were connected to an antenna including movement, delays and multipath effects. This makes LabSat 3 invaluable for recording moving scenarios such as driving through a city in a car. One of the benefits of using a recorded test signal is consistency. For example, if testing of a product involves going for a drive each time the firmware is updated, the satellite positions and atmospheric conditions will be different for every drive. If the drive is recorded once with LabSat 3, the recorded signal can be replayed over and over on the bench saving hours of drive time and with the knowledge that the conditions will be the same for each replay.
Components
LabSat 3 has been designed to be portable and simple to use allowing virtually anyone to gather field test signals without in depth training. Recording GNSS signals is as simple as positioning the antenna and pressing one button. The sunlight-readable graphic display gives instant feedback of record status and can show live histogram data to verify satellites in view during recording. Back at the Lab, recorded signals can be replayed at the push of a button for repeatable, reliable testing.
LabSat 3 Front
LabSat 3 Rear
Name
Type
Description
POWER
2 pin LEMO
8 to 30 VDC Power Supply input
HOST USB
USB ‘A’
Connection of USB Storage devices
ETHERNET
RJ45
Remote access and control
USB
USB ‘B’
NMEA data output
RF OUT
SMA
Output RF signal
RF IN
SMA
Input RF signal (RP variants only)
REF
SMA
10MHz Reference Clock Input
Expansion
36 Way MDR
1PPS, Digital I/O*, CAN*, RS232*
*Model dependent – available as options.
Display
Keypad
SD Card
Slot
Media
LED
LabSat 3 media
LabSat 3 file formats
LabSat 3 uses I&Q binary data and runs the FAT32 file format. LabSat 3 files are recorded into a folder with separate 2GB data files which will run sequentially when replayed. The folder description GPS_000 will contain several files with the name format GPS_000_000.ls3. These will automatically increment.
LabSat 2 (.ls2) and LabSat (.bin) files will need to be converted to this format to play on LabSat 3. The LabSat Scenario Converter Software is supplied on the LabSat 3 Hard Disk Drive (HDD). Please see the section ‘Converting LabSat Scenarios’.
LabSat 3 SD Card
The 32GB SD card included with the LabSat 3 system includes the following files:
→ LabSat 3 sample scenarios
→ GPS_000 - Static 5 minute GPS scenario → GLO_001 - Static 5 minute GLO scenario
→ BDS_001 - Static 5 minute BDS scenario → LabSat 3 quick start video → SatGen simulation software video → LabSat 3 quick start guide PDF
LabSat 3 500GB Hard Disk Drive
The LabSat 3 500GB hard disk includes the following:
→ LabSat 3 scenario library description PDF → LabSat 3 quick start video → SatGen simulation software video → LabSat scenario converter utility → LabSat 3 scenario library – a worldwide selection of LabSat 3 scenario files with supporting KML and
Google Earth jpeg picture files.
The LabSat 3 HDD uses USB3.0 for fast data transfer and is formatted to FAT32.
LabSat 3 Label
The LabSat 3 label is located on the left side toward the rear. Please quote your serial number in all correspondence.
Quick start guide
In addition to this guide, a short LabSat 3 Quick Start video is available on the LabSat 3 SD card and also on the LabSat 3 HDD.
Example of Replay - using the included SD card with preloaded scenario.
Briefly press the power button to power up the LabSat 3. Connect from the RF output on the rear of the LabSat 3 to your GPS system antenna input. With the SD card inserted, use the UP/DOWN arrows to select a file. Press the PLAY button to start replay.
LabSat 3 contains an on board GNSS receiver that allows monitoring of the RF signals during record or replay. To show a live histogram of satellite signal levels detected by the on board receiver, press the OK button during replay. Press the OK button again to return to the replay status display. During replay, pressing the PLAY button will halt replay and return to the file list.
Example of Record – Recording your own file to an SD card (RP variants only)
To record a new file, connect the LabSat 3 antenna to the RF input on the rear of the LabSat. Ensure that the antenna has a clear view of the sky, press the REC button to start recording. Press the REC button again to stop recording. While recording, if the SD card becomes full, recording will stop automatically. During recording, pressing the OK button will switch the display to show a live histogram view of the satellite levels being received by the on-board GNSS monitor. Pressing the OK button again will return to the record status display.
During recording, while using battery power, the GNSS monitor display will automatically revert to the record display after a short period to conserve battery power. This power save feature can be switched off but it is recommended to be left active for maximum battery life.
Menu Layout
File
→ Info - Display file info for selected file. → Delete – Delete selected file Yes/No. → Format SD/USB – Erase and Format SD/USB Yes/No.
Constellation
→ GPS/GAL – Tick to select GPS/Galileo constellation for recording. → GLONASS – Tick to select GLONASS constellation for recording. → BeiDou – Tick to select BeiDou constellation for recording. → 2Bit – Record with 2bit quantisation when single constellation is selected.
Play
→ Loop – selected file will replay continuously. → Pause Time – Defines the pause time between each replay. → From – Specify a time in the scenario to replay from. → For - Specify how long the scenario will replay for.
Record
→ For - Specify how long the LabSat 3 will record for.
Setup
→ Display – Adjust display contrast and backlight brightness. → RF Test – Outputs RF test signal. → Power Save – When selected, will power down display backlight and internal monitor during recording. → CLK REF
→ Internal - As the default setting LabSat 3 will use it internal reference clock.
→ External 10MHz – Allows the user to connect a 10MHz reference signal on the REF input. → Time – Configure internal clock using UTC time from internal GNSS monitor or set manually. → LAN
→ DHCP – Enable/Disable DHCP.
→ IP Address – Set the IP address assigned to LabSat 3.
→ SUBNET MASK - Set the Subnet mask assigned to LabSat 3.
→ DEFAULT GATEWAY - Set the default gateway for the network. → Digital
→ CH1
→ 1PPS – Record 1PPS signal from internal GNSS monitor (disable power save). → RS232 – Record RS232 signal. → CAN CH1 – Record CAN Bus channel 1. → DIGI – Record state of DIGI input signal.
→ CH2
→ 1PPS – Record 1PPS signal from internal GNSS monitor (disable power save). → RS232 – Record RS232 signal. → CAN CH2 – Record CAN Bus channel 2. → DIGI – Record state of DIGI input signal.
CAN
→ Record Type
→ Digitize – When selected the CAN data will be digitized and integrated into the .LS3 file.
→ Log File – When selected the CAN data will be logged into a separate .txt file.
→ CH1
→ Baud rate – Enables the user the set the desired baud rate. → Silent Record - Determines whether or not the LabSat sends an acknowledge pulse during
recording.
→ CH2
→ Baud rate – Enables the user the set the desired baud rate. → Silent Record – Determines whether or not the LabSat sends an acknowledge pulse during
recording.
About – Contains information specific to the LabSat e.g. serial number & firmware version.
Exit – Return to file list.
Replay operation in detail
LabSat 3 uses SD card or HDD memory for storage and playback of GNSS data. It is important to note that Class 10 or higher cards must be used to sustain the transfer speeds required. Racelogic recommend SanDisk Extreme Class 10 cards for best performance.
The 500GB USB Hard Disk Drive (HDD) supplied contains a selection of pre-recorded scenarios from around the world. These scenarios can easily be copied to the SD card for replay. The HDD supports either USB2.0 or USB3.0. For optimum data transfer performance using a PC that supports USB3.0 for file transfer from HDD to SD card is recommended.
The RF OUT connector is a 50Ω output which can be connected directly to the antenna input of the GNSS receiver being tested. The RF OUT connector of LabSat 3 is DC blocked internally so almost any device can be connected to this port. When a file is selected for replay, the LabSat will configure constellation frequencies and digital channels automatically before starting replay. If a triple constellation file is selected for replay on a single channel LabSat, all three constellations will be displayed before replay allowing the user to select one.
During replay, pressing OK will show a live histogram of satellite levels detected by the internal GNSS receiver. The internal receiver currently only supports GPS and GLONASS constellations. This has no effect on the ability of LabSat 3 to record or replay BeiDou signals. When displayed, the UP/DOWN keys switch between GPS and GLONASS monitor modes. Please note that when switching between GPS and GLONASS display modes, the internal receiver will take some time to re-acquire satellite signal levels. In the case of GLONASS signals, it may take over a minute to show the satellite signal information.
LabSat 3 comes with an internal 31dB attenuation capability. To increase the attenuation press the up arrow, this will increase the attenuation by 1dB. The down arrow will decrease the attenuation level.
Attenuation
Display
Attenuation
Controls
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