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Quasonix Maximum Likelihood Stream Combiner Installation And Operation Manual

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ISO 9001:2015
Certified
Installation and Operation Manual
Maximum Likelihood Stream Combiner™
Quasonix, Inc.
6025 Schumacher Park Dr.
West Chester, OH 45069
14 May 2025
*** Revision 1.0 ***
Applies to Software Version 1.2
Specifications subject to change without notice.
All Quasonix antenna products are under U.S. Department of Commerce jurisdiction categorized as
5A991; not covered by ITAR.
No part of the document may be circulated, quoted, or reproduced for distribution without prior written approval from
Quasonix, Inc.
Copyright Quasonix, Inc., All Rights Reserved.

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  • Page 1 Applies to Software Version 1.2 Specifications subject to change without notice. All Quasonix antenna products are under U.S. Department of Commerce jurisdiction categorized as 5A991; not covered by ITAR. No part of the document may be circulated, quoted, or reproduced for distribution without prior written approval from Quasonix, Inc.

  • Page 2: Table Of Contents

    Maximum Likelihood Stream Combiner™ Table of Contents Introduction ............................1 Description ........................... 1 Nomenclature ..........................1 1.2.1 Standard Package Contents ....................2 Specifications ............................3 Installation Instructions .......................... 5 Mechanical ........................... 5 Environmental ..........................6 Electrical ............................6 3.3.1 Rear Panel Connections ......................6 3.3.1.1...
  • Page 3 Maximum Likelihood Stream Combiner™ 4.2.3 Help ............................19 4.2.4 Configure System ........................19 4.2.4.1 System Name ........................20 4.2.4.2 Location ..........................20 4.2.4.3 Control IP Address ......................20 4.2.4.4 Control Netmask ....................... 21 4.2.4.5 Control Gateway ....................... 21 4.2.4.6 Current Date/Time ......................21 4.2.4.7...
  • Page 4 Maximum Likelihood Stream Combiner™ 4.2.6.3.1 IP In Polarity ......................32 4.2.6.3.2 Payload Size ......................33 4.2.6.3.3 Packet Format ......................33 4.2.6.3.4 Frame Alignment ..................... 34 4.2.6.3.5 DQE Sync Word (Hex)..................... 34 4.2.7 TMoIP Status ......................... 34 4.2.8 TMoIP Bit Error Rate Test (BERT) Utilities ................36 4.2.8.1...
  • Page 5 Appendix A – Acronym List ........................54 List of Figures Figure 1: Quasonix Maximum Likelihood Stream Combiner™ Part Number Construction ......1 Figure 2: Mechanical Drawing – 1U Front View.................... 5 Figure 3: Mechanical Drawing – 1U Back View .................... 5 Figure 4: Mechanical Drawing –...
  • Page 6 Maximum Likelihood Stream Combiner™ Figure 19: Browser Interface Frame Footer ....................18 Figure 20: Browser Interface Configure System, Send Settings and Refresh Buttons ......19 Figure 21: Browser Interface Configure System ..................19 Figure 22: Example of Successful Configuration Message ................ 20 Figure 23: Example of Error Message ......................
  • Page 7 Maximum Likelihood Stream Combiner™ Figure 56: About System, Unit Information ....................51 List of Tables Table 1: Model Configuration Example ......................2 Table 2: 1U Rear Panel Connectors ......................6 Table 3: MDM-25 D-Sub Pinout (Ch 1-6) ...................... 7 Table 4: MDM-25 D-Sub Pinout (Ch 7-12) ....................8 Table 5: Suggested Payload Sizes and Data Rates ...................

  • Page 8: Introduction

    (MLSC™). The hardware described in this manual refers to the 12 channel, 1U, Rack-Mount MLSC™ system (part number QSX-MLSC-12). The Quasonix MLSC™ is a new approach to Best Source Selection that extracts optimal data from multiple received signals. Twelve PCM I/O and twelve TMoIP I/O are independently configurable as input or output for MLSC™...

  • Page 9: Standard Package Contents

    Maximum Likelihood Stream Combiner product Four inputs allowed to be used in groups TMoIP capability Specifications are subject to change. Contact Quasonix for questions regarding your specific system. 1.2.1 Standard Package Contents The contents of the shipment include the following: •...

  • Page 10: Specifications

    Maximum Likelihood Stream Combiner™ 2 Specifications Characteristic Specification Core Data Rate 24 Kbps (100 Kbps for TMoIP) to 46 Mbps per channel (TMoIP max aggregate rate of all channels limited depending on specific user settings.) Physical Input/Output Channels 12 PCM and 12 TMoIP available Logical Input Channels 4, 8, or 12 optionally available (Each logical input is assignable to one channel group.)
  • Page 11 Maximum Likelihood Stream Combiner™ Characteristic Specification Four (4) displays for health and status monitoring, including presentation of DQM, time Local Front Panel Interface skew, and BSS state Browser Interface Command, Control, Health, Status, and Logging Integrated Status Reporting, Logging Easy Field Updates...

  • Page 12: Installation Instructions

    3 Installation Instructions 3.1 Mechanical The Maximum Likelihood Stream Combiner enclosure fits in a standard 19” rack, occupying just 1U of rack space. Mechanical layouts are provided in Figure 2, Figure 3, and Figure 4. Figure 2: Mechanical Drawing – 1U Front View Figure 3: Mechanical Drawing –...

  • Page 13: Environmental

    Maximum Likelihood Stream Combiner™ 3.2 Environmental The storage temperature of the MLSC™ is rated for -20°C to +70°C, while the operating temperature is rated for 0°C to +50°C. It is recommended that the unit be kept in a temperature controlled environment to minimize the risk of operating (or storing) outside the ranges specified.

  • Page 14: Mdm-25 D-Sub Pinout Ch 1-6

    Maximum Likelihood Stream Combiner™ Name Description CLK (1-12) TTL 75 Ohm PCM Clock signals for channels 1-12 Input or Output depending on software configuration DATA (1-12) TTL 75 Ohm PCM Data signals for channels 1-12 Input or Output depending on software configuration...

  • Page 15: Mdm-25 D-Sub Pinout Ch 7-12

    Maximum Likelihood Stream Combiner™ 3.3.1.2 MDM-25 D-Sub Pinout Ch 7-12 The pinout for the Ch 7-12, an MDM-25 D-sub connector, is shown in Table 4. Pin locations are illustrated in Figure Table 4: MDM-25 D-Sub Pinout (Ch 7-12) Electrical Char.

  • Page 16: Ports

    Maximum Likelihood Stream Combiner™ Figure 7: MDM-25 D-Sub Pin Locations for Ch 1-6 and Ch 7-12 3.3.1.3 RJ-45 Ports The Ethernet connectivity to the MLSC™ unit is established through the use of one RJ-45 port on the back panel, labeled CTRL. The port accepts 10/100/1000 BASE-T links. The CTRL Ethernet port is used exclusively for configuring, monitoring, network time, and updating the MLSC™.

  • Page 17: Network Segmentation

    TMoIP data streams from potential security concerns. For these reasons, Quasonix recommends that two distinct, non-overlapping networks and LANs be allocated to the MLSC™, one for Control traffic and one for TMoIP/Data traffic. For example: •...

  • Page 18: Reset To Defaults Button

    Maximum Likelihood Stream Combiner™ Note: While not recommended by Quasonix, in the case where two separate LANs cannot be deployed to support Control and TMoIP independently, it is possible to configure Control and Network on separate interfaces as described above, but run them over a single LAN.

  • Page 19: Browser Interface

    The MDM-25 connectors use RS-422 signaling. 3.4 Browser Interface The Quasonix MLSC™ contains a built-in web server. The system’s browser-based graphical user interface (GUI) enables configuration and monitoring of the device on the user’s IP network. While the Browser Interface works with most modern browsers, the latest version of Chrome, Firefox, or Edge is recommended.

  • Page 20: Theory Of Operation

    Maximum Likelihood Stream Combiner™ 3.5 Theory of Operation The MLSC™ processes PCM telemetry data sourced by receivers, such as the Quasonix RDMS3, to extract optimal data from multiple received signals. This PCM data can be provided to the MLSC™ via PCM serial cabling (BNC TTL or MDM-25 RS-422) or via TMoIP (if enabled via part number).
  • Page 21 Maximum Likelihood Stream Combiner™ Configure Advanced settings as needed. Access the Monitor Page (refer to section 4.2.10) Check the Locked indicator of each Group. Anything other than a green indicator means that one or more inputs does not have proper DQE frame lock. Inverted data polarity is one of many possible root causes.

  • Page 22: Operating Instructions

    Maximum Likelihood Stream Combiner™ 4 Operating Instructions The MLSC™ can be configured solely through the web-based browser interface, while the front panel interface provides a variety of status information. The Browser Interface is capable of configuring, monitoring, and updating the device while on the Control network.

  • Page 23: Figure 14: Front Panel Lcd Display

    Maximum Likelihood Stream Combiner™ Figure 14: Front Panel LCD Display The front panel LCD shows the following: • Serial Number (SN) • Name – System name for the device • Loc. – Location for the device • IP – Control IP address •...

  • Page 24: Browser Interface

    Maximum Likelihood Stream Combiner™ • Off – Input channel is not selected for output • Dly – Indicates the delay of the input channel, in bits, relative to the earliest channel • Red – The input channel delay is greater than allowed (refer to Group Config Max Delay and Max Source Spread) 4.2 Browser Interface...

  • Page 25: Frame Header

    The Frame Header, shown in Figure 16, provides identifying information about the system, as well as links to each page in the interface. Figure 16: Browser Interface Frame Header The left-hand portion of the Frame Header consists of: • Quasonix Logo (with link to Monitor page) • Product Type: Quasonix MLSC™ • IP Address •...

  • Page 26: Help

    The Help page provides a link for downloading the MLSC™ Installation and Operation Manual, as well as a link to the Quasonix web site. In addition, it provides the Quasonix mailing address and an email address for contacting Quasonix Support.

  • Page 27: System Name

    Maximum Likelihood Stream Combiner™ If settings are valid and accepted, a message displays, as shown in Figure 22. Figure 22: Example of Successful Configuration Message If settings are not valid or another error occurs, a message will be displayed as in Figure 23.

  • Page 28: Control Netmask

    Maximum Likelihood Stream Combiner™ 4.2.4.4 Control Netmask The Control Netmask is used in conjunction with the Control IP Address to determine the Control Subnet to which the Control interface belongs. It is essential that any external devices that will be used to configure or monitor this unit are part of the same subnet (or can access it through a router).

  • Page 29: Ntp (Network Time Protocol)

    Maximum Likelihood Stream Combiner™ • MM – Month • DD – Day • Time: • HH:MM:SS • HH – Hour (24-hour time) • MM – Minute • SS – Second Figure 25: Example of Date/Time Parameters After typing in the Date and Time, click on the Set Manual Time button to manually set the time. The Configure System page refreshes approximately one (1) second after clicking on the button.

  • Page 30: Presets

    Maximum Likelihood Stream Combiner™ • IP Address: yyy.yyy.yyy.yyy When NTP Time Type is used, only NTP Server 1 is required, though more servers can be added to improve time sync reliability and accuracy. 4.2.4.9 Presets The Presets buttons are used to Save, Load, Delete, and Export system configuration settings. This is a convenient way to save settings for a particular test or operation, then reload those settings as needed.

  • Page 31: Delete

    Maximum Likelihood Stream Combiner™ Figure 29: Load Preset Message Figure 30: Load Operation Message, Complete 4.2.4.9.3 Delete Click on the red Delete button to delete a previously saved configuration. Select a preset to delete using the drop down menu in the Delete Preset message, shown in Figure 31. The Delete Operation message displays when the delete is complete, as shown in Figure 32.

  • Page 32: Dark Mode Switch

    Maximum Likelihood Stream Combiner™ Figure 33: Export Preset Message Figure 34: Export Operation Message, Complete 4.2.4.9.5 Dark Mode Switch The Dark Mode Switch, shown in Figure 35, changes the browser interface color scheme to use a black background and darker colors, as shown in Figure 36. This theme may be preferred by some users, especially in low light environments.

  • Page 33: Pcm Channel Configuration

    Maximum Likelihood Stream Combiner™ Figure 36: Dark Mode Example 4.2.5 PCM Channel Configuration The PCM Channel Configuration page, shown in Figure 37, provides access to every PCM channel-specific setting. These channels can be used as inputs to, or outputs from, the MLSC™ groups.

  • Page 34: Enable

    Maximum Likelihood Stream Combiner™ Figure 37: PCM Channel Configuration The settings available for each channel are described in the following sections. As described for the Configure System page, the Channel Configuration page contains a Send Settings button and a Refresh button that behave similarly to those on the Configure System page. Here, the two buttons apply to all channels at once.

  • Page 35: Tmoip Channel Configuration

    Maximum Likelihood Stream Combiner™ • TTL – PCM telemetry utilizes TTL signaling on the BNC clock and data connector assigned to the channel. • RS-422 – PCM telemetry utilizes RS-422 signaling on the MDM-25 connector and pins assigned to the channel.

  • Page 36: Default Group

    Maximum Likelihood Stream Combiner™ Figure 39: Channel Configuration, Network Expanded The settings available in each group are described in the following sections. As described for the Configure System page, the Channel Configuration page contains a Send Settings button and a Refresh button that behave similarly to those on the Configure System page.

  • Page 37: Data Flow Direction

    Maximum Likelihood Stream Combiner™ 4.2.6.1.3 Data Flow Direction Each channel of the MLSC™ can be independently configured to take TMoIP packets as input or transmit them as an output. There are two settings available via the drop down menu: •...

  • Page 38: Netmask

    Maximum Likelihood Stream Combiner™ Note: All channel IP Addresses on a single MLSC™ device should be contained within the same subnet. For example, 10.1.2.1 through 10.1.2.12, all with Netmask 255.255.255.0. Additionally, all channels can share the same IP address, if desired, as long as each one has a different Port number.

  • Page 39: Multicast Addr

    Maximum Likelihood Stream Combiner™ the Multicast Addr. These IGMP messages are required when working with certain multicast-enabled switches and routers (which typically use IGMP Snooping to determine to which ports to send certain multicast traffic). • In IP Out mode with Multicast Enable checked, outgoing telemetry data from the MLSC™ is packetized and sent to the address entered in the Multicast Addr field.

  • Page 40: Payload Size

    Maximum Likelihood Stream Combiner™ The IP In Polarity provides the ability to invert incoming data, if necessary. Two settings are available via the drop down menu: • Normal – Incoming TMoIP packet data is not inverted. • Inverted – Incoming TMoIP packet data is inverted after being read from the incoming TMoIP data packet.

  • Page 41: Frame Alignment

    Maximum Likelihood Stream Combiner™ • 218-10 – Outgoing packets are formatted according to the IRIG 218-10 specification with control word Version identifier bits set to “0000”. Note: In IP In mode, only 218-20 TMoIP packets are processed. All other formats, including 218-10, are ignored.

  • Page 42: Figure 42: Tmoip Status

    Maximum Likelihood Stream Combiner™ Figure 42: TMoIP Status TMoIP Status provides status on several per-channel status items. This page can be extremely useful to confirm test conditions and to ensure that data and clock rates are as expected. If DQE Alignment is enabled and DQE Frames are being received, it is also recommended to monitor for DQE Sync.

  • Page 43: Tmoip Bit Error Rate Test (Bert) Utilities

    Maximum Likelihood Stream Combiner™ • Underflow Errors – Displays a 1 if any Underflow errors have occurred in the IP In processing • Overflow Errors – Displays a 1 if any Overflow errors have occurred in the IP Out processing •...

  • Page 44: Bert Settings

    Maximum Likelihood Stream Combiner™ The BERT Analyzer is always analyzing the incoming data, regardless of which mode the channel is in. In IP Out mode, the BERT Analyzer is looking at the PCM data coming in from the MLSC™ group output. In IP In mode, the BERT Analyzer is looking at the TMoIP data coming in via 218-20 network packets.

  • Page 45: Generator Bitrate (Mbps)

    Maximum Likelihood Stream Combiner™ • PN6 – Pseudorandom pattern 2^6 -1 bits in length • PN11 – Pseudorandom pattern 2^11 -1 bits in length • PN15 – Pseudorandom pattern 2^15 -1 bits in length • PN23 – Pseudorandom pattern 2^23 -1 bits in length 4.2.8.1.3...

  • Page 46: Inverted

    Maximum Likelihood Stream Combiner™ 4.2.8.2.3 Inverted This LED image indicates if the BERT Analyzer detects an inverted PN pattern. It is gray if not inverted, yellow if inverted. 4.2.8.2.4 RX Bitrate (Mbps) This status indicates the approximate bitrate of incoming data, in Mbps.

  • Page 47: Figure 47: Group Configuration (Condensed)

    Maximum Likelihood Stream Combiner™ The Group Configuration page, shown in Figure 47, provides access to every group-specific setting. Figure 47: Group Configuration (Condensed) The Show I/O and Show Advanced links are used to condense/expand additional settings. These settings are visible after the link is clicked and display as follows: Quasonix, Inc.

  • Page 48: Figure 48: Group Configuration (Expanded I/O)

    Maximum Likelihood Stream Combiner™ Figure 48: Group Configuration (Expanded I/O) Quasonix, Inc.

  • Page 49: Enable

    Maximum Likelihood Stream Combiner™ Figure 49: Group Configuration (Expanded Advanced) Only Groups that have changes to settings are reconfigured. However, in certain cases, latter Groups may also be reconfigured (refer to section 4.2.9.1 and section 4.2.9.4). When a Group is reconfigured, the output has output discontinuities.

  • Page 50: Bss Mode

    Maximum Likelihood Stream Combiner™ 4.2.9.3 BSS Mode • MLBD (default mode) • Maximum Likelihood Bit Detection • Always produces the optimal output compared to Best Source or Majority Vote, provided DQM is available • Uses the Data Quality Metric (DQM) for each bit of every bit stream to determine the most likely correct output bit •...

  • Page 51: Max Source Spread (Bits)

    The valid range is 0-50,000,000. Note: Max Delay and Max Source Spread should be set equal (barring other guidance from Quasonix) and only as high as needed to accommodate the maximum spread between receive channels. Needlessly high settings may degrade correlation performance.

  • Page 52: Minimize Latency

    Maximum Likelihood Stream Combiner™ Note: Actual data that does not include a PN pattern is completely compatible with the MLSC™ combining processes. This BERT Pattern is only used for test purposes with known PN data. 4.2.9.13 Minimize Latency Check this box when obtaining the least possible latency through the MLSC™ is critical, and the maximum expected source spread within a group cannot be accurately estimated.

  • Page 53: Text-Based Information

    Maximum Likelihood Stream Combiner™ Figure 50: MLSC™ Group Monitor 4.2.10.1 Text-Based Information The text section, shown in Figure 20, displays the following information. This display continually updates while this page is displayed. Figure 51: Text-Based Group Monitor Information Quasonix, Inc.

  • Page 54: Graphical Chart

    Maximum Likelihood Stream Combiner™ • Locked Indicator – Indicates the DQE Frame Lock on Group inputs • Green – All group inputs have DQE frame lock • Yellow – Some group inputs locked (those not locked are listed with a strikethrough) •...

  • Page 55: Logging

    Maximum Likelihood Stream Combiner™ After logging has stopped, the log file may be downloaded by clicking on the displayed filename. Alternatively, click on the Logging Page link to view, export, or delete all log files created by this system. Figure 52: Logging, Start Button Figure 53: Logging, Stop Button 4.2.11 Logging...

  • Page 56: Status

    Maximum Likelihood Stream Combiner™ Figure 54: Logging 4.2.12 Status 4.2.12.1 System Status The System Status section, shown in Figure 55, provides the following information. This data continually updates as long as this page is displayed. Quasonix, Inc.

  • Page 57: System Statistics

    Maximum Likelihood Stream Combiner™ Figure 55: System Status • System Time – Current system day, date, and time in UTC, formatted as Day YYYY-MM-DD HH:MM:SS • System Uptime – Current system uptime in days and minutes • System Temperature – Current internal system temperature in degrees Celsius •...

  • Page 58: Figure 56: About System, Unit Information

    Maximum Likelihood Stream Combiner™ Figure 56: About System, Unit Information The Firmware Update link allows in-field firmware updates via an update file provided by Quasonix. Additional items vary by release and may be requested by Quasonix if support is necessary.

  • Page 59: Product Warranty

    Maximum Likelihood Stream Combiner™ 5 Product Warranty The Maximum Likelihood Stream Combiner™ carries a standard parts and labor warranty of one (1) year from the date of delivery. Quasonix, Inc.

  • Page 60: Technical Support And Rma Requests

    Maximum Likelihood Stream Combiner™ 6 Technical Support and RMA Requests In the event of a product issue, customers should contact Quasonix via phone (1-513-942-1287) or e-mail (support@quasonix.com) to seek technical support. If the Quasonix representative determines that the product issue must be addressed at Quasonix, a returned materials authorization (RMA) number will be provided for return shipment.

  • Page 61: Appendix A - Acronym List

    Maximum Likelihood Stream Combiner™ 7 Appendix A – Acronym List Acronym Description Bit Error Probability Bit Error Rate Bayonet Neill-Concelman Connector (RF Connector) Best Source Selector Diversity Combiner DHCP Dynamic Host Configuration Protocol Data Quality Encapsulation Data Quality Metric Graphical User Interface...

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