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CSI Wireless ABX-3 Reference Manual

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ABX-3 / MBX-3
Reference Manual
Part Number: 875-0021-003
Date: May 2001

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Summary of Contents for CSI Wireless ABX-3

  • Page 1 ABX-3 / MBX-3 Reference Manual Part Number: 875-0021-003 Date: May 2001...
  • Page 2 CSI Wireless, Inc. 1200 - 58 Avenue S.E. Calgary, Alberta, Canada T2H 2C9 Telephone number: +1-403-259-3311 Fax number: +1-403-259-8866 E-mail address: info@csi-wireless.com Web Site: www.csi-wireless.com ABX-3 / MBX-3 Reference Manual...
  • Page 3 CSI Wireless, Inc. FCC Notice The ABX-3 and MBX-3 Beacon Receivers comply with the Part 15, Subpart J Emission Requirement for Class A digital devices for use in commercial, business, and industrial environments.
  • Page 4 Purchaser’s Exclusive Remedy The purchaser’s exclusive remedy under this warranty shall be limited to the repair or replacement, at the option of CSI Wireless, of any defective part(s) of CSI Wireless receivers or accessories. Repairs shall be made through a CSI Wireless approved service center only.
  • Page 5 CSI Wireless products by unauthorized person(s) or party(s) shall render this warranty null and void. CSI Wireless does not warrant or guarantee the precision or accuracy of positions obtained when using CSI Wireless products. Product accuracy as stated in CSI Wireless literature and/or product...
  • Page 6 ABX-3 / MBX-3 Reference Manual...

  • Page 7: Table Of Contents

    Real-Time DGPS ..................3 DGPS Format......................3 Radiobeacon DGPS Service................. 4 1.4.1 Radiobeacon Range................. 4 1.4.2 Radiobeacon Reception................5 1.4.3 Radiobeacon DGPS................. 5 1.4.4 Radiobeacon Coverage................6 Factors Affecting Positioning Accuracy ............. 7 Beacon Receiver Information................9 ABX-3 / MBX-3 Reference Manual...
  • Page 8 MBL-3 H-Field Antenna.................26 2.4.4 ABL-1 Aircraft Antenna................26 2.4.5 MGL-3 Combined GPS/Beacon Antenna ..........27 2.4.6 Routing and Securing the Antenna Cable.........27 2.4.7 Optional Antenna Mounts ..............28 Internal Signal Splitter (Optional) ..............29 ABX-3 Configuration and Operation.................31 viii ABX-3 / MBX-3 Reference Manual...
  • Page 9 Factory Default Settings..................32 Tune Modes ......................32 3.3.1 Automatic Beacon Search (ABS) Mode..........32 3.3.2 Manual Mode ..................34 ABX-3 Receiver Performance - SNR Reading ..........34 ABX-3 / Garmin GPS Operation..............35 MBX-3 Configuration and Operation.................36 Front Display and Keypad .................36 4.1.1 Lock Status ....................37 Factory Default Settings..................37...
  • Page 10 NMEA 0183 Commands ..................60 5.7.1 Standard Commands................60 5.7.2 Proprietary Commands.................63 NMEA 0183 Queries ..................67 5.8.1 Standard Queries...................67 5.8.2 Proprietary Queries................68 Firmware Updates....................72 Troubleshooting ......................74 Appendix A - Specifications....................78 Appendix B - Beacon Information ..................87 Further Reading........................89 Index……..........................90 ABX-3 / MBX-3 Reference Manual...
  • Page 11 ABX-3 / MBX-3 Reference Manual...

  • Page 12: List Of Figures

    IST OF IGURES Figure 2-1 Receiver Cable Connectivity................16 Figure 2-2 ABX-3 and MBX-3 Connectivity, RS-232C .............20 Figure 2-3 ABX-3 and MBX-3 Connectivity, RS-422 ............21 Figure 2-4 RS-232/RS-422 Configuration................22 Figure 2-5 Beacon Receiver/MBA-3 Grounding Requirement ........25 Figure 2-6 ABX-3/MBX-3 Internal Signal Splitter Option ..........30 Figure 3-1 ABX-3 LED Indicators..................31...
  • Page 13 ABX-3 / MBX-3 Reference Manual xiii...

  • Page 14: List Of Tables

    IST OF ABLES Table 2-1 Power Requirements of the ABX-3 and MBX-3 ..........18 Table 2-2 ABX-3 and MBX-3 Data Pin-out, RS-232C Interface Level......19 Table 2-3 ABX-3 and MBX-3 Data Pin-out, RS-422 Interface Level......19 Table 3-1 Default ABX-3 Tune Mode..................32 Table 3-2 Default ABX-3 Port Settings................32 Table 3-3 Receiver Performance - SNR Reading...............35...
  • Page 15 Table A-6 ABL-1 Aircraft Antenna Specifications .............83 Table A-7 Antenna Signal Splitter Specifications...............84 ABX-3 / MBX-3 Reference Manual...

  • Page 16: Preface

    Both receivers feature a proven, fully automatic radiobeacon search algorithm. The MBX-3 incorporates a 2-line by 16-character LCD display and keypad for control of the receiver, while the ABX-3 is a lower cost “black box” product with lock and power indicators.

  • Page 17: Customer Service

    ABX-3 Configuration and Operation - Chapter 3: provides details and instructions to configure and operate the ABX-3. MBX-3 Configuration and Operation - provides details and Chapter 4: instructions to configure and operate the MBX-3. Chapter 5: NMEA 0183 Interface - describes the subset of NMEA 0183 commands and queries used to communicate with the ABX-3 and MBX-3 receivers.

  • Page 18: World Wide Web Site

    CSI Wireless Customer Service to obtain a Return Merchandise Authorization (RMA) number before returning any product to CSI Wireless. If you are returning a product for repair, you must also provide a fault description before CSI Wireless will issue an RMA number.

  • Page 19: Notes, Cautions, And Warnings

    MBX-3 receiver keypad. Notes, Cautions, and Warnings Notes, Cautions, and Warnings stress important information regarding the installation, configuration, and operation of the ABX-3 and MBX-3 Beacon Receivers. Note - Notes outline important information of a general nature. Caution - Cautions inform of possible sources of difficulty or situations that may cause damage to the product.

  • Page 21: Introduction

    1. Introduction This chapter provides a brief overview of GPS, differential GPS beacon technology, and a description of the ABX-3 and MBX-3 receivers, antennas, and accessories. 1.1 GPS The United States Department of Defense (DoD) operates a reliable, 24 hour a day, all weather Global Positioning System (GPS).

  • Page 22: Gps Services

    The difference between the known and measured range for each satellite is the range error. This error is the amount that needs to be removed from each satellite distance measurement in order to correct for errors present in the system. ABX-3 / MBX-3 Reference Manual...

  • Page 23: Real-Time Dgps

    Various broadcast standards may exist for the beacon networks installed internationally, controlled by their respective operating authority. The United States Coast Guard maintains a broadcast standard that is referenced in the Further Reading section of this manual. ABX-3 / MBX-3 Reference Manual...

  • Page 24: Radiobeacon Dgps Service

    1.4 Radiobeacon DGPS Service The ABX-3 and MBX-3 receivers are able to use differential corrections received through the internal beacon receiver, operating seamlessly with DGPS beacon networks throughout the world. 1.4.1 Radiobeacon Range The broadcasting range of a 300 kHz beacon is dependent upon a...

  • Page 25: Radiobeacon Reception

    RTCM SC-104 messages, including message types 1, 2, 3, 5, 6, 7, 9, and 16. A DGPS beacon will broadcast either Type 1 or Type 9 messages, both of which contain similar information. These two messages contain pseudorange corrections and range rate corrections to each GPS satellite. ABX-3 / MBX-3 Reference Manual...

  • Page 26: Radiobeacon Coverage

    In this figure, light shaded regions note current coverage, with beacon stations symbolized as white circles. The world beacon networks continue to expand. For more current coverage, consult the CSI Wireless Web site at www.csi-wireless.com ABX-3 / MBX-3 Reference Manual...

  • Page 27: Factors Affecting Positioning Accuracy

    The distance between a remote user and the reference station is often considerable when using 300 kHz DGPS radiobeacons. Broadcast ranges may be as great as 450 km (280 miles) or more, depending ABX-3 / MBX-3 Reference Manual...
  • Page 28 As the base station calculates corrections based on local ionospheric conditions, they may not completely account for the errors observed at the remote user’s location. This causes part of the spatial decorrelation that may be ABX-3 / MBX-3 Reference Manual...

  • Page 29: Beacon Receiver Information

    1 meter of horizontal accuracy 95% of the time using real-time DGPS transmissions. 1.6 Beacon Receiver Information The ABX-3 and MBX-3 receive, and demodulate RTCM SC-104 differential correction data transmitted by 300 kHz DGPS radiobeacons. Both receivers house CSI Wireless’s dual channel SBX-2 beacon...

  • Page 30: Antenna Information

    It also has the ability to display position and satellite information from a connected GPS receiver’s NMEA data output messages. The ABX-3 receiver is a cost-effective “black box” product with power and lock LED indicators. Its primary mode of operation is automatic mode, for hands-free operation.

  • Page 31: Electric Field Antenna

    The MGL-3 uses the same enclosure as the MBL-3, but combines two individual antennas, the H-field Loop antenna and an L1 GPS patch antenna. Both of these elements are active and draw their power from ABX-3 / MBX-3 Reference Manual...

  • Page 32: Combined Gps / Electric Field Antenna

    The MGW-1 uses the same enclosure as the MBL-3 and MGL-3, but combines an E-field Whip antenna and an L1 GPS patch antenna. Both of these elements are active and draw their power from the ABX-3 or MBX-3 beacon receiver. As with the MBA-3, the MGW-1 requires an antenna ground connection.
  • Page 33 GPS receiver. CSI Wireless also offers an Internal Signal Splitter on ABX-3S and MBX-3S receiver models, to reduce the complexity of cable connections. Refer to Section 2.5 for more information on this option.
  • Page 34 ABX-3 / MBX-3 Reference Manual...

  • Page 35: Installation

    2. Installation This chapter contains instructions and recommendations for the installation of the ABX-3 or MBX-3 receiver and its antenna. 2.1 System Parts List The following list of standard equipment is included with the beacon receiver system: Receiver Antenna Power Cable...

  • Page 36: Installing The Receiver

    2.3 Installing the Receiver To ensure optimum receiver performance and ease of operation, you should consider the information presented in the following sections when installing the ABX-3 or MBX-3 receiver. 2.3.1 Receiver Placement The Universal Mounting Bracket (U-bracket) supplied with the system is used to secure the receiver to the selected mounting surface.

  • Page 37: Environmental Considerations

    2.3.2 Environmental Considerations Both the ABX-3 and MBX-3 are designed to operate within enclosed environments where the temperature remains between -30 °C and +70 °C and relative humidity is less than 95%. They may be stored between -40 °C and +80 °C.

  • Page 38: Grounding The Receiver

    A 1.5 A slow blow fuse, situated in-line of the power cable protects the receiver from power surges. The fuse container should remain accessible after installation. Caution - Do not operate either the ABX-3 or MBX-3 with the 1.5 A fuse bypassed. Such modification will void the product warranty.

  • Page 39: Connecting The Receiver To External Devices

    RS-422 level. The wire colors listed in Tables 2-2 and 2-3 are specific to a custom DB-9P to un- terminated data cable, CSI Wireless PN 051-0005-000. Contact CSI Wireless if you wish to purchase this cable.

  • Page 40: Figure 2-2 Abx-3 And Mbx-3 Connectivity, Rs-232C

    GPS, or communicating device transmit line. This is required for display of GPS information on the MBX-3 LCD display when in MBX-E mode, and for tuning of the ABX-3 and MBX-3 receivers remotely. You must connect the signal ground (pin 5) of the beacon receiver to the signal ground of the external GPS device.

  • Page 41: Rs-232C And Rs-422 Operation

    PC computer. However, there are a number of chart- plotting devices, incorporating GPS capabilities, that operating at the RS-422 interface level. The default communication level of the ABX-3 and MBX-3 is RS-232C. To switch from the default RS-232C communication level, you must remove the MBX-3’s front and back panels to slide the receiver board...

  • Page 42: Figure 2-4 Rs-232/Rs-422 Configuration

    You will require a Philip’s screwdriver to open the front and back panels of the MBX-3, and the back panel of the ABX-3. Once you have removed the front panel screws for the MBX-3, carefully remove the front plate and disconnect the ribbon cables of the display and switch keypad, taking note of connector orientation when secured.

  • Page 43: Installing The Antenna

    The MBX-3 receiver displays the SNR within the Beacon Status menu. However, with the ABX-3, you must issue a NMEA query to the receiver through the serial port. Normally you will require a PC computer with a...

  • Page 44: E-Field Antenna

    SNR, such as Garmin GPS receivers (you must connect the GPS transmit to the receive of the beacon receiver). CSI Wireless offers free PC computer controller software for interfacing with CSI Wireless beacon receiver equipment, located on the CSI Wireless Web site at: www.csi-wireless.com.

  • Page 45: Figure 2-5 Beacon Receiver/Mba-3 Grounding Requirement

    You should minimize the number of times that connector must be removed, to ensure that a quality connection between the connector casing and the cable is maintained. ABX-3 / MBX-3 Reference Manual...

  • Page 46: H-Field Antenna

    The ABL-1 requires a 50 Ω impedance antenna extension cable such as RG-58U (up to 150 m (492 ft) in length) for proper operation. No antenna ground connection is required with the ABL-1. ABX-3 / MBX-3 Reference Manual...

  • Page 47: Combined Gps/Beacon Antenna

    2.4.6 Routing and Securing the Antenna Cable CSI Wireless beacon antennas require a 50 Ω impedance antenna extension cable such as RG-58U (up to a maximum of 150 m (492 ft) in length) for proper operation. In the case of the combined MGL-3, cable losses at the higher GPS frequency (1.575 GHz) restrict the cable...

  • Page 48: Optional Antenna Mounts

    Remove unwanted slack from the antenna extension cable at the receiver end. Secure along the cable route using plastic tie wraps. Caution - The ABX-3 and MBX-3 receivers provide 10 VDC across the antenna port. Connection to incompatible devices may result in damage to equipment.

  • Page 49: Internal Signal Splitter (Optional)

    MBA-3, MBL-3, and MGL-3 antennas. It consists of a hollow threaded post on a circular base. Three screws are required to secure this mount to the mounting surface. (CSI Wireless PN 604-0002-000) 2.4.7.3 Survey Adapter The Survey Adapter is a threaded insert available for use with the MBL- 3 and the MGL-3 antennas.

  • Page 50: Figure 2-6 Abx-3/Mbx-3 Internal Signal Splitter Option

    MGL-3 DATA - OUT RTCM - IN DATA ABX-3S/ MBX-3S Receiver Figure 2-6 ABX-3 / MBX-3 Internal Signal Splitter Option ABX-3 / MBX-3 Reference Manual...

  • Page 51: Configuration And Operation

    NMEA 0183 formatted messages. 3.1 LED Indicators The ABX-3 features a red and green LED on the front panel to indicate receiver power and lock status respectively. When the red LED labeled PWR illuminates, the ABX-3 is receiving 9-40 VDC from the external power source.

  • Page 52: Factory Default Settings

    3.2 Factory Default Settings Table 3-1 presents the factory default ABX-3 tune mode, while Table 3- 2 lists the default communication settings. These tune mode and port settings are valid upon initial power-up. The ABX-3 maintains any changes made to its tune mode or port settings for subsequent power- Note - The ABX-3 saves all changes made to the configuration in memory for subsequent power-up.
  • Page 53 3.3.1.1 Global Search When powered for the first time in ABS mode, the ABX-3 initiates a Global Search, examining each available DGPS beacon frequency, and recording Signal Strength (SS) measurements in units of dBµV/m to the Global Search Table.

  • Page 54: Manual Mode

    3.3.2 Manual Mode In Full Manual Tune Mode, you may specify a frequency and bit rate for the receiver to tune to, or specify the frequency only, allowing the ABX-3 to identify the correct MSK bit rate automatically. This latter mode of operation is referred to as Partial Manual Tune Mode.

  • Page 55: Garmin Gps Operation

    GPS receiver with the ABX-3, set the input/output protocols to RTCM/NMEA and change the baud rate of the Garmin to 4800. You may manually tune the ABX-3 by selecting the desired frequency from the menu system of a Garmin GPS product. When tuning manually, the ABX-3 will remain tuned the last frequency even after subsequent power-up.

  • Page 56: Configuration And Operation

    This chapter introduces the display and keypad features, default parameters, and menu structure of the MBX-3. This information is not valid for the ABX-3 receiver. Refer to Chapter 5 for instructions to program both the ABX-3 and MBX-3 receivers via serial data connection and NMEA 0183 messages.

  • Page 57: Lock Status

    The MBX-3 maintains any changes made to its operation or port settings for subsequent power-up. Note - The changes you make to the MBX-3 configuration are saved in memory for subsequent power-up. ABX-3 / MBX-3 Reference Manual...

  • Page 58: Tune Modes

    DGPS beacons without interrupting the continuous flow of RTCM data to your GPS receiver. ABS mode is ideal for navigation applications over considerable areas, eliminating the need for operator intervention when traveling from one beacon coverage zone to another. ABX-3 / MBX-3 Reference Manual...

  • Page 59: Manual Mode

    MBX-3 to identify the correct MSK bit rate on its own. This mode of operation is most useful when working in an area where you know the ABX-3 / MBX-3 Reference Manual...

  • Page 60: Display Modes

    GPS receiver that does not provide a graphical interface. Options Setup You may select MBX-E mode from the section of the menu, as described in Section 4.8.5. Refer to Section 2.3.5 to connect an external GPS receiver for MBX-E operations. Please consult your ABX-3 / MBX-3 Reference Manual...

  • Page 61: Menu System

    This indicator is a symbol representing a GPS satellite. The third state, denoted by the solid circle between the two parallel vertical lines indicates that the GPS receiver is computing differentially corrected position solutions. 4.5 MBX-3 Menu System ABX-3 / MBX-3 Reference Manual...

  • Page 62: Start-Up Sequence

    0 3 1 S N R 0 1 5 M T P 1 0 0 % U n s e l e c t e d 0 0 0 0 0 B a c k ABX-3 / MBX-3 Reference Manual...
  • Page 63 L/L Units Tune 305.0/200 Hgt Unit Meters Select Beacon Continent Country Beacon Name Vel Unit KPH Subscription User Select User User Entry UTC Offset Version Display Back Edit User User Entry Back Back Erase User Back ABX-3 / MBX-3 Reference Manual...

  • Page 64: Figure 4-4 Mbx-3 Menu System

    Health of the transmitting beacon. Table 4-3 defines the range and interpretations of health values. Table 4-3 Beacon Health Status Values Health Code Indication 0 – 5 Reference Station Transmission Broadcast - Monitored Reference Station Transmission Broadcast – Un-monitored Reference Station Not Working ABX-3 / MBX-3 Reference Manual...

  • Page 65: Setup

    K P H U T C O f f s e t B a c k B a u d R a t e B a u d R a t e P1-MAIN {2400, 4800, 9600 bd} ABX-3 / MBX-3 Reference Manual...
  • Page 66 Beacon/GPS receivers). Do not configure the MBX-3 for this mode of operation. GLX-3 Mode of operation reserved for CSI Wireless LGBX products incorporating GPS, Beacon, and Omnistar L- Band receiver technologies. Do not configure the MBX-3 for this mode of operation.
  • Page 67 Auto, available for each increment. Select if you know the frequency of the beacon but are uncertain of the correct MSK rate. When the correct frequency and bit rate is displayed, press Beacon Status proceed to the menu. ABX-3 / MBX-3 Reference Manual...

  • Page 68: Position Status (Mbx-E Mode Only)

    MBX-3 for operation within a CSI Wireless proprietary encrypted RTCM broadcast network. To enable this feature, please contact your CSI Wireless dealer or CSI Wireless Customer Service. Displays the MBX-3 serial number, resident firmware, V e r s i o n...
  • Page 69 4 or greater, then the computed position is 3D, and includes a valid height solution. If less than four, then the solution is 2D, holding the height parameter constant at either 0, or its last measured value. ABX-3 / MBX-3 Reference Manual...

  • Page 70: Satellites (Mbx-E Mode Only)

    This information is parsed from the NMEA $GPGSV or $PASHS,SAT message strings. Displays the azimuth angle (0° = 360° = North) of the SV relative to the external GPS receiver antenna. This information is parsed from the NMEA $GPGSV or $PASHS,SAT message strings. ABX-3 / MBX-3 Reference Manual...

  • Page 71: Menu System Shortcuts

    Beacon Status press to proceed directly to the menu, allowing you to monitor beacon receiver performance quickly. SV Count In MBX-E mode, when, is in focus, you may press Satellites proceed directly to the status menu. ABX-3 / MBX-3 Reference Manual...

  • Page 72: Receiver Performance - Snr Reading

    4.7 Operation of MBX-3 with Garmin GPS Interfacing the MBX-3 with a Garmin GPS receiver is very similar to that of the ABX-3, however, you may use either the Garmin GPS or the MBX-3 menu system for tuning and monitoring performance. The...

  • Page 73: Configuring The Receiver

    Scroll with the keys until the desired country is displayed then press Scroll with the keys until the name of the specific beacon is displayed then press ABX-3 / MBX-3 Reference Manual...

  • Page 74: Set To Automatic Beacon Search Mode

    User is displayed, then press Scroll with the keys until Edit User is displayed, then press Scroll with the keys until the User Entry field that you wish Scroll with the to modify is displayed and press ABX-3 / MBX-3 Reference Manual...
  • Page 75 User is displayed, then press Scroll with the keys until Select User is displayed, then Scroll with the press Scroll with the keys until the name of the beacon you wish to tune to is displayed, and press ABX-3 / MBX-3 Reference Manual...

  • Page 76: Nmea 0183 Interface

    5. NMEA 0183 Interface This chapter identifies the selection of NMEA 0183 command and status query messages valid for the ABX-3 and MBX-3 receivers. 5.1 Interface Protocols The ABX-3 and MBX-3 receivers support the following data, command, and status protocols:...

  • Page 77: Nmea Message Elements

    <CR> and line feed <LF>. If a NMEA command is not working, this terminal facility option may not be set correctly. Please contact your dealer, or CSI Wireless Customer Service for more information.

  • Page 78: Supported Messages

    ABX-3 or MBX-3, each sentence is appended automatically with a <CR> <LF> when the send button is depressed. This software utility is available for download from CSI Wireless’s Web site at: www.csi- wireless.com. 5.4 ABX-3 Supported Messages The ABX-3 supports the NMEA commands and queries listed in Table 5-2.

  • Page 79: Supported Messages

    Sets the baud rate of the ABX-3 communication port $PCSI,6 (Proprietary) Reserved $PCSI,7 (Proprietary) Reserved $PSLIB (Proprietary) Sets the frequency and MSK bit rate of the ABX-3 Queries $GPCRQ Operation Query Queries the receiver for operation parameters $GPCRQ Performance Query Queries the receiver for performance parameters...

  • Page 80: Response Message

    The following subsections describe the selection of valid standard NMEA-0183 commands, and their responses. 5.7.1.1 Full Manual Tune Command ($GPMSK) This command instructs both the ABX-3 and MBX-3 to tune to a specified frequency and MSK Rate. It has the following form: ABX-3 / MBX-3 Reference Manual...
  • Page 81 (0 to 100 seconds). When power is cycled, the status output interval resets to zero. The status message output by the ABX-3 and MBX-3, as initiated using this command, is the CRMSS message response discussed in Section 5.8.1.2.
  • Page 82 Section 5.8.1.2. Note - If the n field in this message is non-zero, the status data message output by the ABX-3 or MBX-3 may interrupt the flow of RTCM messages to the GPS receiver. 5.7.1.3 Automatic Beacon Search Command ($GPMSK)

  • Page 83: Proprietary Commands

    CRMSS is the ABX-3 and MBX-3 performance status message, output every n seconds, and is discussed in Section 5.8.1.2. The ABX-3 and MBX-3 provide the above responses to this $GPMSK message, and immediately tunes to the optimum beacon station, provided a valid beacon almanac is present in receiver memory.

  • Page 84: Table 5-4 Abx-3 Baud Rates

    Background Search mode, a new Global Search will begin immediately. 5.7.2.2 Baud Rate Change Command ($PCSI,5) This proprietary $PCSI command is reserved for use with the ABX-3 only. The MBX-3 supports the baud rate change command discussed in Section 5.7.2.3.

  • Page 85: Table 5-5 Mbx-3 Baud Rates

    4800 P4-DGPA 4800 5.7.2.4 MBX-3 Display Mode ($PCSI,7) This proprietary $PCSI command is reserved for use with the ABX-3 only. The Display Mode command sets the MBX-3 mode of operation as detailed in Section 4.3. $PCSI,7,m<CR><LF> ABX-3 / MBX-3 Reference Manual...

  • Page 86: Table 5-7 Mbx-3 Display Modes

    ABX-3 and MBX-3 Response: In this message, fff.f is the frequency in kHz (283.5-325 kHz; 0 - Auto). The ddd field represents the desired MSK bit rate in bits per second (100, 200 bps; 0 - Auto). ABX-3 / MBX-3 Reference Manual...

  • Page 87: Nmea 0183 Queries

    The following subsections describe the selection of valid standard NMEA-0183 queries, and their responses. 5.8.1.1 Receiver Operating Status Query ($GPCRQ) This standard NMEA query prompts both the ABX-3 and MBX-3 receivers for their operational status. It has the following format: $GPCRQ,MSK<CR><LF>...

  • Page 88: Proprietary Queries

    The following subsections describe the selection of valid CSI Wireless proprietary NMEA-0183 queries, and their responses. 5.8.2.1 Receiver Help Query ($PCSI,0) This command queries both the ABX-3 and MBX-3 receivers for a list of valid proprietary $PCSI commands: $PCSI,0<CR><LF> ABX-3 Response:...
  • Page 89 5.8.2.2 ABX-3 Status Line A, Channel 0 ($PCSI,1) This query is only valid for the ABX-3. It commands the ABX-3 to output a selection of parameters related to the operational status of its primary channel.
  • Page 90 ABX-3 receiver. 5.8.2.3 ABX-3 Status Line B, Channel 1 ($PCSI,2) This query is only valid for the ABX-3. It commands the ABX-3 to output a selection of parameters related to the operational status of its secondary channel. It has the following format: $PCSI,2<CR><LF>...
  • Page 91 ABX-3 has been cycled. 5.8.2.4 Receiver Search Dump ($PCSI,3) This query is only valid for the ABX-3. It commands the ABX-3 to display the search information used for beacon selection in Automatic Beacon Search mode. The output has three frequencies per line.

  • Page 92: Firmware Updates

    $PCSI,79,3225,000,06,00,-0010,80,3230,339,0E,00,-0013,81,3235,000,06,00,-0011 $PCSI,82,3240,000,06,00,-0010,83,3245,202,0E,00,-0007,84,3250,006,0E,00,-0002 The ABX-3 will return this response when queried for its search table contents. The xx field is the frequency ID (1=283.5 to 84=325.0 kHz), ffff is the frequency in kHz multiplied by 10, sid is the station ID, ci is the receiver channel information, snr is the signal to noise ratio in dB, and ss is the signal strength in dBµV/m.
  • Page 93 Please contact CSI Wireless Customer Service for the latest firmware update for your ABX-3 or MBX-3 receiver. Firmware releases include a Field Upgrade Program, installation instructions, and release notes. ABX-3 / MBX-3 Reference Manual...

  • Page 94: Troubleshooting

    6. Troubleshooting Use the following checklists to troubleshoot anomalous ABX-3 and MBX-3 receiver operation. Table 5-1 provides a problem symptom, followed by a list of possible solutions for troubleshooting operation of the ABX-3 receiver. Table 6-1 ABX-3 Troubleshooting Symptom Possible Solution •...

  • Page 95: Table 6-2 Mbx-3 Troubleshooting

    • Non-differential GPS output Verify ABX-3 lock status • Verify matched ABX-3 output and GPS RTCM input baud rates • Verify GPS receiver RTCM compatibility • Verify GPS receiver DGPS configuration • Verify pin connectivity between ABX-3 and GPS receiver •...
  • Page 96 Verify communication parameter settings (8 data bits - No parity - 1 stop bit) • Check integrity of data cable connections • Verify pin connectivity between MBX-3 and terminal device • Ensure receiver is in MBX-3 mode ABX-3 / MBX-3 Reference Manual...
  • Page 97 ABX-3 / MBX-3 Reference Manual...

  • Page 98: Appendix A - Specifications

    A - S PPENDIX PECIFICATIONS This appendix provides the operational, mechanical, electrical, physical, and environmental specifications for the following CSI Wireless products: the ABX-3 Beacon Receiver the MBX-3 Beacon Receiver the MBA-3 Whip Antenna the MBL-3 Loop Antenna the MGL-3 Combination Antenna...

  • Page 99: Table A-2 Mbx-3 Beacon Receiver Specifications

    MSK Bit Rate 100, 200, or Automatic Frequency Selection Manual or Automatic ± 5 Hz Frequency Offset Dynamic Range 100 dB ± 500 Hz Adjacent Channel Rejection 60 dB @ f Decoding RTCM 6/8 Demodulation ABX-3 / MBX-3 Reference Manual...

  • Page 100: Table A-3 Mba-3 Whip Antenna Specifications

    Environmental Specifications Item Specification Storage Temperature -40°C to 80°C Operating Temperature -30°C to 70°C Humidity 95% Non-Condensing Table A-3 MBA-3 Whip Antenna Specifications Operational Specifications Item Specification Frequency Range 283.5 - 325 kHz Gain 20 dB ABX-3 / MBX-3 Reference Manual...

  • Page 101: Table A-4 Mbl-3 Loop Antenna Specifications

    Table A-4 MBL-3 Loop Antenna Specifications Operational Specifications Item Specification Frequency Range 283.5 - 325 kHz Gain 34 dB Pre-Amplifier Integral Low Noise Amplifier Power Specifications Item Specification Input Voltage 4.9-13 VDC supplied by receiver Input Current 25-35 mA ABX-3 / MBX-3 Reference Manual...

  • Page 102: Table A-5 Mgl-3 Combined Loop / Gps Antenna Specifications

    LNA Gain, Beacon 34 dB Pre-Amplifier, Beacon Integral Low Noise Amplifier Frequency Range, GPS 1.575 GHz (L1) LNA Gain, GPS Various available Power Specifications Item Specification Input Voltage 4.9-13 VDC supplied by receiver Input Current 50-60 mA ABX-3 / MBX-3 Reference Manual...
  • Page 103 Table A-6 ABL-1 Aircraft Antenna Specifications Operational Specifications Item Specification Frequency Range 283.5 - 325 kHz Gain 34 dB Pre-Amplifier Integral Low Noise Amplifier Power Specifications Item Specification Input Voltage 10-13 VDC supplied by receiver Input Current 30 mA ABX-3 / MBX-3 Reference Manual...
  • Page 104 +10 VDC to combo. antenna (MGL-3) Port J3 Output Voltage N/A, DC blocked to GPS receiver Mechanical Characteristics Item Specification Enclosure Cast Aluminum Length 92 mm (3.6”) Width 56 mm (2.2”) Height 38 mm (1.5”) ABX-3 / MBX-3 Reference Manual...
  • Page 105 Port J3, to GPS Receiver TNC-S Environmental Specifications Item Specification Storage Temperature -40°C to 80°C Operating Temperature -30°C to 70°C Humidity 95% Non-Condensing 92mm (3.60") 30mm (1.18") 38mm (1.50") 56mm (2.20") to Beacon Receiver from Antenna to GPS Receiver ABX-3 / MBX-3 Reference Manual...

  • Page 106: Figure A-1 External Signal Splitter

    Figure A-1 External Signal Splitter ABX-3 / MBX-3 Reference Manual...

  • Page 107: Appendixb - Beacon Information

    PPENDIX EACON NFORMATION CSI Wireless maintains a listing of DGPS radiobeacons worldwide that is available on the Internet from the CSI Wireless home page: www.csi-wireless.com This listing contains the following information regarding currently operating beacons and potential new sites: Station name...
  • Page 108 ABX-3 / MBX-3 Reference Manual...

  • Page 109: Further Reading

    1800 Diagonal Rd, Suite 600, Alexandria, VA, 22314-2840 USA, Tel: +1- 703-684-4481, Fax: +1-703-836-4429 US Department of Transportation, United States Coast Guard, Broadcast Standard for the USCG DGPS Navigation Service, COMDTINST M16577.1, April, 1993, 2100 Second St. SW, Washington, D.C., 20593-0001, USA ABX-3 / MBX-3 Reference Manual...

  • Page 110: Index

    Display, 23, 27 Automatic Beacon Search (ABS), 6, Display Mode, 30, 31, 35 37, 42, 50 GBX-3, 36 Azimuth, 40 GBX-E, 36 MBX-3, 30, 35, 43 MBX-E, 13, 31, 36, 43 Background Search, 25, 30 ABX-3 / MBX-3 Reference Manual...
  • Page 111 MGL-3 Loop Antenna, 19 Proprietary Tune, 54 Internal Splitter Option, 22 Reserved, 52 Wipe Search, 51 NMEA 0183 Message, 46, 47 NMEA 0183 Query, 54, 55 Keypad, 23, 27 MBX-3 Help, 56 Operating Status, 55 ABX-3 / MBX-3 Reference Manual...
  • Page 112 RS-422 Interface Level, 12, 14, 15, 16 RTCM Message Types, 3 Units, 36 RTCM SC-104, 3, 6, 12, 45 Velocity, 38, 39 SBX-2, 6 www.csi-wireless.com, xvii Select Beacon, 37 Selective Availability (SA), 2, 4 Signal Strength, 34 ABX-3 / MBX-3 Reference Manual...
  • Page 113 ABX-3 / MBX-3 Reference Manual...

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