SEPTENTRIO AsteRx-i3 Hardware Manual
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SEPTENTRIO AsteRx-i3 Hardware Manual

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AsteRx-i3 Product Group
Hardware Manual
Version 1.0.0

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Summary of Contents for SEPTENTRIO AsteRx-i3

  • Page 1 AsteRx-i3 Product Group Hardware Manual Version 1.0.0...
  • Page 2 AsteRx-i3 Product Group Hardware Manual Version 1.0.0 April 9, 2021 © Copyright 2000-2021 Septentrio nv/sa. All rights reserved. Septentrio Greenhill Campus, Interleuvenlaan 15i 3001 Leuven, Belgium http://www.septentrio.com Phone: +32 16 300 800 Fax: +32 16 221 640 @septentrio...

  • Page 3: Table Of Contents

    1 Table of contents TABLE OF CONTENTS ....................3 ASTERX-I3 D OEM & ASTERX-I3 S OEM ............... 6 AsteRx-i3 D OEM ...................... 6 AsteRx-i3 S OEM ....................... 7 Mounting ........................8 Environmental ......................8 Power and Power Consumption ................9 RF Interface ......................
  • Page 4 Open-Ended Cable ....................22 ROBOTICS INTERFACE BOARD .................. 24 Mechanical Drawings .................... 25 USB Dev ........................25 44-pin Header ......................26 LEDs ......................... 27 Log Button Header ....................28 PPS/Event Header ....................28 Power Supply Options ................... 28 DEVELOPMENT KIT ....................30 Header Types ......................
  • Page 5 ROHS/WEEE NOTICE Septentrio receivers are compliant with the latest WEEE, RoHS and REACH directives. For more info see www.septentrio.com/en/environmental-compliance. ESD PRECAUTIONS The OEM module is sensitive to electrostatic discharge (ESD). Although it has a limited protection, it should only be manipulated in an ESD-safe environment and using ESD-safe...

  • Page 6: Asterx-I3 D Oem & Asterx-I3 S Oem

    AsteRx-i3 D OEM & AsteRx-i3 S OEM 2 AsteRx-i3 D OEM & AsteRx-i3 S OEM 2.1 AsteRx-i3 D OEM MAIN AUX1 REF OUT All dimensions in millimeters. Weight = 29 g...

  • Page 7: Asterx-I3 S Oem

    AsteRx-i3 D OEM & AsteRx-i3 S OEM 2.2 AsteRx-i3 S OEM The AsteRx-i3 S OEM board has the same dimensions and connectors as the AsteRx-i3 D OEM board, but it does not incorporate the ADIS IMU. It is designed to operate with an external SBG Ellipse IMU (see chapter 3).

  • Page 8: Mounting

    GND pins of the I/O connector(s) as well. The maximum height of the components at the bottom side of the AsteRx-i3 OEM board is within the mask shown below (applicable to both AsteRx-i3 D OEM and AsteRx-i3 S OEM).

  • Page 9: Power And Power Consumption

    1.35 W 1.00 W All GNSS signals from all GNSS constellations 1.80 W 1.20 W AsteRx-i3 S OEM excluding SBG IMU (add 400mW to include it): Signals enabled with setSignalTracking Power consumption Dual antenna Single antenna GPS L1+L2, GLO L1+L2 1.15 W...

  • Page 10: Electrical Specifications

    AsteRx-i3 D OEM & AsteRx-i3 S OEM The main antenna must be connected to the u.FL or MMCX connector marked “MAIN” on the PCB and the auxiliary antenna must be connected to the AUX1 connector. 2.6.1 Electrical Specifications Antenna supply voltage 3-5.5V DC, set via pin#18 of the 30-pin connector.

  • Page 11: I/O Connectors

    AsteRx-i3 D OEM & AsteRx-i3 S OEM 2.7 I/O Connectors 60 pin 30 pin The main connector is the 30-pin connector. That connector must always be connected. The 60-pin connector provides additional signals (IO enable, serial CTS/RTS lines, GPIOs, Ethernet, 10-MHz reference input, etc).

  • Page 12: 30-Pin Connector

    AsteRx-i3 D OEM & AsteRx-i3 S OEM 2.7.1 30-pin Connector Connector type: Hirose 30 pins DF40HC (3.5)-30DS-0.4V(51) Mating connector: Hirose DF40C-30DP-0.4V(51) See the pin numbering convention in the above picture. Pin# Name Type Level Description Comment 3.3V Main power supply input...

  • Page 13: 60-Pin Connector

    General purpose output. GP1 in setGPIOFunctionality command. See section 2.10 RTS2 LVTTL Serial COM2 RTS line. The AsteRx-i3 OEM drives this pin low when ready to receive data. RTS3 LVTTL Serial COM3 RTS line. The AsteRx-i3 OEM drives this pin low when ready to receive data.
  • Page 14 AsteRx-i3 D OEM & AsteRx-i3 S OEM Pin# Name Type Level Description Comment Reserved Ground Reserved Ground Reserved CTS2 I, K LVTTL Serial COM 2 CTS line. Must be driven low when ready to receive data from the AsteRx-i3 OEM.

  • Page 15: Frequency Reference Output (Ref Out)

    AsteRx-i3 D OEM & AsteRx-i3 S OEM 2.8 Frequency Reference Output (REF OUT) REF OUT The frequency reference used by the receiver is available at the REFOUT u.FL connector. This is a 10MHz square wave, 0 - 2.8V, output impedance 50Ohms.

  • Page 16: Sd Memory Card Usage

    AsteRx-i3 D OEM & AsteRx-i3 S OEM Note that entering standby mode takes a few seconds during which all running processes are shutdown. Warning: Do not drive a non-zero voltage into input pins (pins type “I”) when the receiver is in standby. To be safe during standby, it is recommended to use the IO_EN signal of the 60-pin connector as enable for the drivers driving the input pins.

  • Page 17: Usb Interface

    AsteRx-i3 D OEM & AsteRx-i3 S OEM 1. By entering the command “exeManageDisk, DSK1, Unmount” before turning off the receiver. 2. By driving the button pin (pin#25) low for at least 5 seconds before turning off the receiver. 2.13 USB Interface The user can configure the USB device interface in either USB 1.1 (full speed) mode, or in...
  • Page 18 AsteRx-i3 D OEM & AsteRx-i3 S OEM...

  • Page 19: Adis Imu (Asterx-I3 D Oem Only)

    2.15.2 IMU Orientation in Vehicle The orientation of the AsteRx-i3 D OEM in your vehicle must be provided to the receiver using the setIMUOrientation command. Selected examples are shown below.
  • Page 20 AsteRx-i3 D OEM & AsteRx-i3 S OEM Refer to the Reference Guide to configure the INS/GNSS integration.

  • Page 21: Ellipse2 Micro From Sbg Systems

    Ellipse2 Micro from SBG Systems 3 Ellipse2 Micro from SBG Systems 3.1 Dimensions All dimensions in mm. The IMU reference point is marked by the symbol.

  • Page 22: Power Consumption

    The IMU connector is a 10 ways Harwin Gecko. The exact receptacle reference is G125- FS11005L0P. The mating connector is Harwin G125-3041096L4 (plus contacts). The input voltage range (VIN pin) is from 4 to 15V. Communication with the AsteRx-i3 S OEM module is through Port A.
  • Page 23 The SYNC A pin of the IMU must be connected to the PPSout pin of the AsteRx-i3 S OEM (pin#12 of the 30-pin connector). The PPSout rate must be left at its default value (1Hz).

  • Page 24: Robotics Interface Board

    4 Robotics Interface Board The Robotics Interface Board is an interface card designed to ease integration and test. This chapter provides information on the interface card only. Refer to chapter 2 for the specifications of the AsteRx-i3 OEM board. 44-pin IO Interface board...

  • Page 25: Mechanical Drawings

    Robotics Interface Board 4.1 Mechanical Drawings The drawing below shows the dimension of the Interface Board attached to the AsteRx-i3 D OEM. Weight: 52g 4.2 USB Dev Connector type: micro USB type B. That connector can be attached to a PC to power the receiver and to communicate with it...

  • Page 26: 44-Pin Header

    Robotics Interface Board 4.3 44-pin Header Connector type: SAMTEC TMM-122-03-S-D, 2-mm pitch. Conventions Pin Type: I=Input, O=Output, P=Power, Gnd=ground • LVTTL=3V3 Low Voltage TTL: VI ≤ 0.8V, VI ≥ 2.0V, VO ≤ 0.4V, VO ≥ 2.4V. • PU: internally pulled up •...

  • Page 27: Leds

    Power input See section 4.7 Note 1: The level of the GP1 pin of the AsteRx-i3 OEM (pin#9 of the 60-pin connector, see 2.7.2) must be low for the EVENT pins to be functional. Note 2: On-board magnetics. The Ethernet pins can directly be routed to an Ethernet connector.

  • Page 28: Log Button Header

    3V3_INV_PPS 3.3V The EVENTA2 pin is a second input for the EVENTA of the AsteRx-i3 OEM (see section 2.9). The first input pin (EVENTA1) is available on the 44-pin connector. The EVENTA input of the OEM receiver is the logical OR of EVENTA1 and EVENTA2.
  • Page 29 Power can be applied from both sources at the same time. On-board diodes prevent short circuits. The interface board provides the 3V3 supply to the AsteRx-i3 OEM receiver and a 5V DC voltage to the VANT pin of the AsteRx-i3 OEM.

  • Page 30: Development Kit

    USB Dev USB Host 3&4 REF IN The AsteRx-i3 OEM Development Kit is specifically designed to simplify the development process for new integrations. 5.1 Header Types All headers have a pitch of 2.54mm, with the exception of J500 (PPS/EVENTS) and J501 (GP).

  • Page 31: Antenna Connectors

    Make sure that a jumper is placed on header J200, as shown below. Otherwise the DevKit will be powered, but not the OEM board. To measure the power consumption of the AsteRx-i3 OEM board (excluding the contribution from the DevKit and the antenna), remove the jumper on J200 and connect the two pins to the probes of a multimeter in current-sensing mode.

  • Page 32: Leds And General Purpose Output Pins

    The POWER LED lights when the DevKit is powered. The GPLED and LOGLED are connected to the homonymous pins of the 30-pin connector of the AsteRx-i3 OEM board. See section 2.7.1 for the pinout, and Appendix A for a description of the LED behavior.

  • Page 33: Pps Out And Event Inputs

    EVENTB EVENTA The PPSout pin of header J500 is directly connected to the PPSOut pin of the AsteRx-i3 OEM (see section 2.7.1). The PPS level is 3.3V. The EVENTA and EVENTB pins of J500 are connected to the EventA and EventB pins of the AsteRx-i3 OEM through a buffer.

  • Page 34: Ethernet

    5.11 Buttons nRST LOGGING Pressing the nRST button drives the nRST pin of the AsteRx-i3 OEM low, which resets the receiver. Pressing the LOGGING button drives the Button pin of the AsteRx-i3 OEM low. This can be used to enabled and disable logging, as described in section 2.12.

  • Page 35: Sd Card Socket

    SD Card logging. 5.13 Connection with the Ellipse2 IMU Septentrio’s open ended SBG IMU cable (see sections 3.4) can be used to connect the DevKit to the Ellipse2 IMU. The following connections are recommended: PPS out: to Ellipse2 SYNC A...

  • Page 36: Appendix Aled Status Indicators

    LED Status Indicators Appendix A LED Status Indicators The LED pins can be used to monitor the receiver status. They can be used to drive external LEDs (max drive current 10mA). It is assumed that the LED lights when the electrical level of the corresponding pin is high.
  • Page 37 LED Status Indicators The LOGLED reports the SD card mount status and logging activity. LED Behaviour LOGLED LED is off when the SD card is not present or not mounted. LED is on when the SD card is present and mounted. Short blinks indicate logging activity.

  • Page 38: Appendix Bsystem Noise Figure And C/N0

    System Noise Figure and C/N0 Appendix B System Noise Figure and C/N0 The system noise figure, in dB, can be calculated as: NFsys = 10*log NFant/10 + (10 NFrx/10 -1)/10 Gpreamp/10 where NFant is the antenna LNA noise figure, in dB; •...

  • Page 39: Appendix Cemc Considerations

    EMC Considerations Appendix C EMC Considerations In applications in which the electronics are collocated with the GNSS antenna, cross-talk could be a major concern. GNSS signals are very weak and easily interfered by radiated harmonics of digital signals. The most useful indicator of the signal reception quality is the C/N0 of the satellites in view.
  • Page 40 EMC Considerations An example of interference is shown below. This particular interference at about 1598 MHz falls in the GLONASS L1 band and slightly degrades the L1 C/N0 of some GLONASS satellites. Try to keep personal computers and other equipment more than 2 meters away from the antenna while assessing electromagnetic compatibility of the integration.
  • Page 41 (see the setNotchFiltering command). Intermittent wide-band cross-talk can often be eliminated with the wide band interference canceller (see the setWBIMitigation command). AsteRx-i3 OEM has been designed to minimize radiation and can be used close to an antenna without additional shielding.

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