Page 1 328 Innovation Blvd. Witham, Essex, CM8 3HA, England. State College, PA 16803, U.S.A. Tel: +44(0)1376 515636 Tel: +1 814 238 3450 Fax: +44(0)1376 533764 Fax: +1 814 238 3829 http://www.paradisedata.com Copyright © 2013 Teledyne Paradise Datacom Ltd. All rights reserved.
Page 2: Table Of Contents
Q-Lite Satellite Modem Installation and Operating Handbook Table of Contents Chapter 1 Welcome ....................1-1 Chapter 2 About This Handbook ................2-1 Conventions ....................... 2-1 Trademarks ......................2-1 Disclaimer ......................2-1 Chapter 3 Safety and Compliance Information ............ 3-1 Safety Compliance ..................... 3-1 Environmental Compliance .................
Page 3 Q-Lite Satellite Modem Installation and Operating Handbook 6.1.2 Takeaway Mode ..................... 6-1 Web User Interface ..................... 6-2 6.2.1 Login Screen ....................6-2 6.2.2 Status Screen ....................6-3 6.2.2.1 Status Setup ................... 6-5 6.2.2.2 Status Demodulator ................6-6 6.2.2.3 Status Paired Carrier™ ................6-7 6.2.2.4...
Page 4 Q-Lite Satellite Modem Installation and Operating Handbook 6.2.4.8 LNB LO Frequency ................6-24 6.2.4.9 DC to LNB ..................... 6-24 6.2.4.10 10MHz to LNB ................... 6-24 6.2.4.11 Mute LNB Services in Standby ............6-24 6.2.5 Edit->Unit Screen ..................6-25 6.2.6 Edit->Unit->M&C Screen ................6-25 6.2.6.1...
Page 5 Q-Lite Satellite Modem Installation and Operating Handbook 6.2.5.7 Maximum Round-trip Delay ..............6-55 6.2.6 Edit->Memories Screen ................6-55 6.2.6.1 Edit->Memories->Recall Screen ............6-56 6.2.6.2 Edit->Memories->Recall->Advanced Reversionary Control Screen..6-56 6.2.6.3 Edit->Memories->Store Screen ............. 6-58 6.2.6.4 Edit->Memories->Download Screen ............6-58 6.2.6.5 Edit->Memories->Upload Screen ............
Page 6 Q-Lite Satellite Modem Installation and Operating Handbook 7.1.3.4 G.703 Clock Extension ................7-8 Automatic Uplink Power Control ................. 7-8 7.2.1 Introduction ..................... 7-8 7.2.2 Configuring AUPC ..................7-9 1:1 Redundancy Operation ................7-10 7.3.1 Overview....................... 7-10 7.3.2 Switching Operation ..................7-10 7.3.3 Setup Procedure ...................
Page 7 Q-Lite Satellite Modem Installation and Operating Handbook 11.7 Start-up Problems ................... 11-10 Chapter 12 Specification Summary ..............12-1 12.1 Common Main Specifications ................12-1 12.2 Tx Modulator Specifications ................12-3 12.3 Rx Demodulator Specifications ................. 12-4 12.4 Clocking and Buffering Specifications ............... 12-4 12.5...
Page 8: Chapter 1 Welcome
The Q-Lite™ L-band modem has a powerful processor that is ideal for handling IP traffic. In common with other Q Series modems, it incorporates a new software suite called XStream IP™.
Page 9 XStream IP™ includes all IP features as standard making it very good value. • The design aim for Paradise’s Q Series modems, of which the Q-Lite™ is one, was to create the industrys most versatile and bandwidth-efficient satellite modem. Among the satellite band-width saving features available are: Paired Carrier™, allowing two carriers to be overlapped in the space segment,...
Page 10: Chapter 2 About This Handbook
A separate product warranty statement is available. Teledyne Paradise Datacom maintains a programme of continuous product improvement and reserves the right to change specifications without prior notice.
Page 11: Safety And Compliance Information
Q-Lite Satellite Modem Installation and Operating Handbook Chapter 3 Safety and Compliance Information PLEASE READ FOLLOWING INFORMATION BEFORE INSTALLATION AND USE. 3.1 Safety Compliance To ensure operator safety, this satellite modem conforms to the provisions of EMC Low Voltage Directive 2006/95/EC and complies with the following standard: EN 60950-1:2006 ‘Safety of Information Technology Equipment, Including...
Page 12: Environmental Compliance
Q-Lite Satellite Modem Installation and Operating Handbook 3.2 Environmental Compliance All Teledyne Paradise Datacom satellite modem products are compliant with the following EC environmental directives: The Reduction of Hazardous Substances (RoHS) Directive 2002/95/EC. • The Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC.
Page 13: Electromagnetic Compatibility (Emc) Compliance
Q-Lite Satellite Modem Installation and Operating Handbook 3.3 Electromagnetic Compatibility (EMC) Compliance This satellite modem conforms to the provisions of EMC Directive 2004/108/EC and complies with the following EC and FCC standards: Emissions: EN 55022:2006 Class B – ‘Information Technology Equipment –...
Page 14: Chapter 4 Installation
Equipment Type A’. A regulated 24V DC power supply must be used. The power supply connector on the Q-Lite™ allows for a second power supply to be connected in parallel in order to provide protection against the failure of a single supply. Typical power consumption is 30W;...
Page 15: Getting Started
Connect the appropriate cables to the transmit and receive L-band TNC connectors, along with the cable for the traffic interface. If a front-panel keypad membrane and LCD display have been provided then connect the cables for both of these to the appropriate Q-Lite™ connectors as shown in Figure.
Page 16 Q-Lite Satellite Modem Installation and Operating Handbook With no mezzanine, terrestrial or Utilities cards fitted: 13mm. This is due to the • 10MHz external oscillator, which could potentially be removed after which the heighest component is 8mm. With a mezzanine card (for DVB-S2, FastLink™ or Paired Carrier™) fitted: •...
Page 17: Chapter 5 Introduction
Chapter 5 Introduction 5.1 Overview The Q-Lite™ satellite modem is designed primarily for closed network operation in mobile environments, providing a data link between geographically distant sites via satellite. Features include: DVB-S2 (EN 302 307) operation including Adaptive Coding and Modulation (ACM) •...
Page 18: Standard-Fit Hardware
Q-Lite Satellite Modem Installation and Operating Handbook TCP acceleration is supported at up to the maximum data rate for the modem. Up to 10000 concurrent accelerated TCP connections are supported along with up to 40,000 unaccelerated TCP connections. Bandwidth utilization when TCP acceleration is enabled is typically over 90%.
Page 19: Option Card
The Q-Lite™ supports the same set of terrestrial interface cards as the Q-Flex™ modem although not all of these are listed on the Q-Lite™ datasheet. If you have an application that requires a terrestrial interface card that is not on the datasheet then then please contact Sales or Technical Support.
Page 20: Quad E1 Option Card
Link (IFL) cable. 5.3.3 BUC Power Supply Options The Q-Lite™ satellite modem can be connected to a Power Supply Unit (PSU) for powering a Block Up Converter (BUC). Refer to Table 5-1 for the available Paradise BUC power supply options. The BUC PSU is a separate item from the satellite modem circuit board and therefore space must also be assigned in any custom enclosure design for the BUC PSU.
Page 21: Software Options
Q-Lite Satellite Modem Installation and Operating Handbook 5.4 Software Options Several software options, known as Software Activated Features (SAF), are available as shown in Table 5-2. These can be purchased on a pay-as-you-go basis and retrospectively activated in deployed units as required. The SAF concept (including time-...
Page 22 Q-Lite Satellite Modem Installation and Operating Handbook Feature Description Code DVB-S2 Tx DVB2T Enables DVB-S2 Tx operation for all supported modulations. Includes SmartLink™ and IP over DVB encapsulation, supporting Multiprotocol Encapsulation (MPE), Unidirectional Lightweight Encapsulation (ULE) and Paradise XStream Encapsulation (PXE).
Page 23 Q-Lite Satellite Modem Installation and Operating Handbook Feature Description Code Paired Carrier™ PCMZ Enables Paired Carrier™ data rates in the given range 56kbps to 256kbps (inclusive). Incorporates ViaSat’s patented PCMA technology. For all supported data rates, Paired Carrier™ is subject to a minimum occupied bandwidth of 30kHz and a maximum of 45MHz.
Page 24: Optional Front Panel
Q-Lite Satellite Modem Installation and Operating Handbook Feature Description Code FastLink™ LDPC Enables FastLink™ low-latency LDPC prevailing data rate of the modem (subject to maximum data rate 100Mbps). Includes relevant modulations and FEC rates. Enables TPC FEC to the prevailing data rate of the modem (subject to maximum data rate of 60Mbps).
Page 25: Lcd Display
Q-Lite Satellite Modem Installation and Operating Handbook Figure 5-2 Front-panel Status Indicators Amber Green Unit Status Not used Unit fault Not used Unit OK Rx Traffic Rx fault or Rx Not used Not used Rx OK disabled Tx Traffic Tx fault or Tx...
Page 26 Q-Lite Satellite Modem Installation and Operating Handbook Figure 5-3 Front-panel Keypad 5-10...
Page 27: Q-Lite™ Circuit Board Connectors
Q-Lite Satellite Modem Installation and Operating Handbook 5.6 Q-Lite™ Circuit Board Connectors The Q-Lite™ circuit board, shown in Figure 6-4, provides a set of terrestrial and satellite data interfaces. Additional functionality is accessible through the connectors on the Utility Card. All connector pinouts are defined in Chapter 11.
Page 28 Q-Lite Satellite Modem Installation and Operating Handbook The Q-Lite™ circuit board connectors are as follows: +24V DC Connector • The modem is designed to operate from a regulated +24V DC input. There is no further regulation of the 24V provided on the circuit board itself and therefore the input must be at exactly 24V.
Page 29 Q-Lite Satellite Modem Installation and Operating Handbook BUC PSU (J11) Connector • This provides the option to connect a BUC PSU to the modem. The power from the PSU is fed via the BUC PSU connector to the Tx TNC and on to the BUC via the intersite cable.
Page 30: Utilities Card Connectors
Q-Lite Satellite Modem Installation and Operating Handbook 5.7 Utilities Card Connectors The connectors on the optional P3719 Utilities card are as follows: Station Clock • This is a 75 BNC female connector that accepts a 1MHz to 10MHz signal, either a square wave of >1V peak-to-peak or a sine wave at a power level of 0dBm or...
Page 31 Q-Lite Satellite Modem Installation and Operating Handbook • A USB connector is provided. This can be used to upgrade the modem software using a memory stick. Fan Connector • This is a two-pin Molex connector that provides the option to fit a cooling fan to the modem.
Page 32: Chapter 6 User Interfaces
Q-Lite Satellite Modem Installation and Operating Handbook Chapter 6 User Interfaces 6.1 User Control The modem has a web browser user interface and an optional front panel keypad and LCD display. For remote web browsing, there are two fixed user names, namely, admin and user. The admin user can view and change the modem configuration, while user can only view the modem settings.
Page 33: Web User Interface
Q-Lite Satellite Modem Installation and Operating Handbook 6.2 Web User Interface The modem includes an embedded web server that allows full monitoring and configuration of the modem via a web browser (on port 80). Secure connections via HTTPS (on port 443) are also supported. Non-secure connections via HTTP (port 80) can optionally be disabled.
Page 34: Status Screen
Q-Lite Satellite Modem Installation and Operating Handbook Figure 6-2 Web Server Welcome Screen This screen will include the text ‘The web user interface is in ‘View-only’ mode’ when the modem is in Local control mode, in which modem control is restricted to front-panel operation only.
Page 35 Q-Lite Satellite Modem Installation and Operating Handbook Figure 6-3 Status Screen The line of buttons across the top of the display (ie. STATUS, EDIT, VIEW, TEST and HELP) give access to the major modem functions, while the tabs below the buttongs give access to individual menus.
Page 36: Status Setup
Q-Lite Satellite Modem Installation and Operating Handbook Figure 6-4 Modem Summary Status Summary status information for the modem is shown at the top left-hand side of the screen as shown in Figure 6-4. This presents the following: ‘ID’: The user-entered modem-identification text string.
Page 37: Status Demodulator
Q-Lite Satellite Modem Installation and Operating Handbook 6.2.2.1.1 Status Traffic The Traffic section of the Status page is continually updated with the following information: Transmit path status. When there is no transmit path fault then the message ‘Tx • OK since HH:MM:SS on DD/MM/YY’ is displayed (where ‘HH’ indicates hours, ‘MM’...
Page 38: Status Paired Carrier
Q-Lite Satellite Modem Installation and Operating Handbook Number of Doppler buffer overflows and underflows. These represent the number • of times the receive buffer has slipped as a result of overflows and underflows. These counts are reset to zero when the demodulator goes out of lock. They can also be cleared using the front-panel menus.
Page 39: Status Aupc
Q-Lite Satellite Modem Installation and Operating Handbook 6.2.2.5 Status AUPC The Automatic Uplink Power Control (AUPC) section of the Status screen is displayed and continually updated with the following information when AUPC is enabled: Remote Eb/No. This is the current Eb/No reported by the remote modem.
Page 40: Edit->Tx-Rx->Service Screen
Q-Lite Satellite Modem Installation and Operating Handbook 6.2.4 Edit->Tx-Rx->Service Screen The Edit->Tx-Rx->Service screen is shown in Figure 6-5. Figure 6-5 Edit->Tx-Rx->Service Screen When a value is changed in an edit or dropdown box, the background for the box will change to red while the modem is actioning the change, as shown in the example below.
Page 41: Terrestrial Interface
Q-Lite Satellite Modem Installation and Operating Handbook 6.2.4.1 Terrestrial Interface Table 6-1 lists the different terrestrial interface options that are available. With the exception of IP, which is provided as standard, they require the relevant interface card option to be fitted. Up to four different interface cards can be fitted.
Page 42 Q-Lite Satellite Modem Installation and Operating Handbook transmitted packets. Closed network plus ESC This provides a framed satellite service that incorporates an Engineering Service Channel (ESC). The ESC provides a secondary communications channel, often used for monitor and control of remote equipment. The variable-rate ESC channel can provide up to 70% of the main channel rate, subject to a maximum size of 115kbps.
Page 43: Tx/Rx Data Rate
Q-Lite Satellite Modem Installation and Operating Handbook 6.2.4.4 Tx/Rx Data Rate Range: 0.0048Mbps to 155.0Mbps; step size: 0.000001Mbps Description: The terrestrial data rate is the maximum number of data bits that the modem will process in relation to the selected terrestrial interface.
Page 44: Tx Clock Source
Q-Lite Satellite Modem Installation and Operating Handbook 6.2.4.6 Tx Clock Source Tx Clock In The external clock supplied on the interface Clock In line will be used. Should this clock fail then the modem will switch to an internal backup clock.
Page 45: Tx/Rx Fec Type
Q-Lite Satellite Modem Installation and Operating Handbook correct frequency is made. This requires the receive buffer to be set as per the Tx Clock In option. Table 6-6 Rx Clock Source 6.2.4.8 Tx/Rx FEC Type FastLink This enables Paradise’s FastLink low-latency Low-Density Parity-...
Page 46: Tx/Rx Frequency Band
Q-Lite Satellite Modem Installation and Operating Handbook FastLink BPSK 0.499 OQPSK 0.532, 0.639, 0.710, 0.798 QPSK 0.532, 0.639, 0.710, 0.798 8PSK: 0.639, 0.710, 0.778 8QAM: 0.639, 0.710, 0.778 16APSK: 0.726, 0.778, 0.828, 0.851 16QAM: 0.726, 0.778, 0.828, 0.851 32APSK: 0.778, 0.828, 0.886, 0.938 64QAM: 0.828, 0.886, 0.938, 0.960...
Page 47: Tx/Rx Spectral Roll-Off
Q-Lite Satellite Modem Installation and Operating Handbook Range: 950.0MHz to 2050.0MHz; step size: 0.0001MHz (i.e. 100Hz) Description: This is the L-band frequency used in transmitting to, or receiving from, satellite. If the BUC LO frequency has been set on the Edit->Tx-Rx->BUC/LNB...
Page 48: Tx/Rx Spectral Inversion
Q-Lite Satellite Modem Installation and Operating Handbook Range: 5%, 10%, 15%, 20%, 25%, 35% Description: All spectral roll-off factors are available for all FECs with the exception of DVB-S2 and SmartLink, which cannot be used with roll-off factors less than 20%.
Page 49: Modem/Buc Carrier
Q-Lite Satellite Modem Installation and Operating Handbook 6.2.4.16 Modem/BUC Carrier These allow the modem and BUC carriers to be switched on/off independently of each other. BUC carrier control requires a control channel (i.e FSK or RS485) to exist between the modem and the BUC.
Page 50: Dvb-S2 Tx/Rx Frame Size
Q-Lite Satellite Modem Installation and Operating Handbook 6.2.5.2 DVB-S2 Tx/Rx Frame Size Short This represents a frame size of 16,200 bits per frame. Normal This represents a frame size of 64,800 bits per frame. This is more bandwidth efficient than short frames but has four times the latency.
Page 51: Reed-Solomon Fec Options
Q-Lite Satellite Modem Installation and Operating Handbook 6.2.5.6 Reed-Solomon FEC Options When using Viterbi and Trellis Coded Modulation (TCM), Reed-Solomon options will become available on the Edit->Tx-Rx->Service->Advanced menu. These allow Reed- Solomon to be switched on/off in transmit and receive. Reed-Solomon is an ‘outer’ codec that can be used to correct errors remaining from the Viterbi and TCM inner FECs.
Page 52: Aupc Mode
Q-Lite Satellite Modem Installation and Operating Handbook 6.2.3.1 AUPC Mode The AUPC function is switched off. Monitor In this mode, the modem will monitor the Eb/No of the remote modem via remote the ESC, without making any changes to the Tx power level.
Page 53: Aupc Method
Q-Lite Satellite Modem Installation and Operating Handbook 6.2.3.5 AUPC Method Normal This should be selected when Q-Series, Quantum or Evolution modems are being used at either end of the satellite link. Self In this mode, the modem will adjust power output in an attempt to...
Page 54: Buc Interface
Q-Lite Satellite Modem Installation and Operating Handbook 6.2.4.1 BUC Interface BUC FSK This indicates that a BUC is fitted that has FSK communications to the modem. This indicates that a BUC is fitted but has no communications to the comms modem.
Page 55: Lnb Type
Q-Lite Satellite Modem Installation and Operating Handbook Setting the checkbox causes the services to switch over from the online modem to the backup modem on a failure. Note that FSK communications will always be switched over. 6.2.4.7 LNB Type None This indicates that no LNB is fitted.
Page 56: Edit->Unit Screen
Q-Lite Satellite Modem Installation and Operating Handbook 6.2.5 Edit->Unit Screen The Edit->Unit screen contains the following tab menu options: M&C. This controls remote M&C settings including serial control settings and user • passwords. Alarms. This controls alarm thresholds and actions.
Page 57: Modem Control And Passwords
Q-Lite Satellite Modem Installation and Operating Handbook 6.2.6.1 Modem Control and Passwords Table 6-29 shows the Modem control options, for user control of the modem. Local In Local mode only the front panel can be used to control the modem.
Page 58 Q-Lite Satellite Modem Installation and Operating Handbook transferred in IP format over the ESC channel, to be output via the serial M&C interface of the remote modem. (See Figure 6-10 for details of the TCP port usage in relation to these commands.) This allows serial control of remote equipment while allowing the ESC channel to operate in an IP mode where it is shared with other IP traffic.
Page 59: Modem Identity
Q-Lite Satellite Modem Installation and Operating Handbook Table 6-31 defines the serial M&C RS485 interface pinout when IP-Remote is selected (refer to Chapter 11 for full connector pinouts). Signal Direction RS485: IP – Remote Mode Name Shield/Gnd Shield/Gnd Master-B + to modem...
Page 60: Edit->Unit->M&C->Email Screen
Q-Lite Satellite Modem Installation and Operating Handbook Figure 6-11 Edit->Unit->M&C->SNMP Screen The Simple Network Management Protocol (SNMP) can be configured for use with SNMP v1, v2c and v3. The modem’s SNMP configuration settings have the standard meanings defined by the relevant SNMP standards and are therefore not described in detail.
Page 61 Q-Lite Satellite Modem Installation and Operating Handbook Figure 6-12 Edit->Unit->M&C->Email Screen From power-up, the modem automatically records modem and satellite link performance information for both online and offline use. This information can be sent by email from the modem to any email address, providing a connection from the modem to an Simple Mail Transfer Protocol (SMTP) mail server is available.
Page 62 Q-Lite Satellite Modem Installation and Operating Handbook The information is sent in Comma Separated Value (CSV) format, which allows the data to be copied into any spreadsheet from where it can be viewed in a number of formats (e.g. as a graph or a table) and from which reports can be generated.
Page 63: Edit->Unit->M&C->Https Screen
Q-Lite Satellite Modem Installation and Operating Handbook Constellation Se… -100 -100 Figure 6-13 Example Constellation Graph (Microsoft Excel) 6.2.9 Edit->Unit->M&C->HTTPS Screen The Edit->Unit->M&C->HTTPS screen is shown in Figure 6-14. Figure 6-14 Edit->Unit->M&C->HTTPS Screen Secure HTTPS connections to the modem’s web server (on port 443) are always enabled.
Page 64: Edit->Unit->Alarms Screen
Q-Lite Satellite Modem Installation and Operating Handbook 6.2.10 Edit->Unit->Alarms Screen The Edit->Unit->Alarms screen is shown in Figure 6-15. Figure 6-15 Edit->Unit->Alarms Screen 6.2.10.1 LinkGuard™ Interference LinkGuard™ is a Paradise patent-pending technology for detecting in-band interference underneath satellite carriers while remaining on traffic.
Page 65: Local/Remote Eb/No Alarm Threshold
Q-Lite Satellite Modem Installation and Operating Handbook Ignore Ignore any AIS indication. Prompt When AIS is detected, raise an alarm, regenerate the AIS indication and send a backward alarm to the upstream equipment. Table 6-35 Tx/Rx AIS Alarm Action 6.2.10.3 Local/Remote Eb/No Alarm Threshold Range: 0dB to 99.0dB;...
Page 66: Edit->Unit->Station Clock Screen
Q-Lite Satellite Modem Installation and Operating Handbook 6.2.11 Edit->Unit->Station Clock Screen The Edit->Unit->Station Clock screen is shown in Figure 6-16. Figure 6-16 Edit->Unit->Station Clock Screen The station clock input is a way of providing a common clock to a number of modems in order to synchronize all satellite traffic to a master clock.
Page 67: Locking The High-Stability Oscillator To The Station Clock
Q-Lite Satellite Modem Installation and Operating Handbook Range: 1000kHz to 10000kHz; step size: 1kHz Description: This must reflect the actual frequency of the station clock input as the modem does not automatically measure the frequency. It is used by the modem in programming the terrestrial interface clocking logic.
Page 68: Edit->Unit->Upgrade Screen
Q-Lite Satellite Modem Installation and Operating Handbook The number of unused test shots remaining. A test shot enables all of the modem • features for a 10-day period (subject to suitable hardware being fitted and with some exceptions). The SAF Mix Code, which is a number that represents all of the features that have •...
Page 69: Edit->Unit->Miscellaneous->Time Screen
Q-Lite Satellite Modem Installation and Operating Handbook A remote modem can be upgraded over the satellite link by browsing to the remote modem’s IP address and following the same upgrade process. Note that the speed of the upgrade is dependent on the bandwidth available over satellite. An approximate time can be worked out by comparing the size of the upgrade file with the bandwidth available.
Page 70: Edit->Ip Screen
Q-Lite Satellite Modem Installation and Operating Handbook Figure 6-20 Edit->Unit->Miscellaneous->Reset Screen 6.2.2 Edit->IP Screen The Edit->IP screen (shown in Figure 6-21) allows the following to be set up: Basic and advanced IP modes and features, such as bridging, routing, acceleration •...
Page 71: Ip Mode
Q-Lite Satellite Modem Installation and Operating Handbook Figure 6-21 Edit->IP Screen 6.2.2.1 IP Mode Table 6-42 shows the IP mode options. Bridge mode In this mode the modem acts as an Ethernet bridge, preserving the original Ethernet frames (including additional fields such as VLAN and MPLS headers) over satellite.
Page 72: Tcp Accleration
Q-Lite Satellite Modem Installation and Operating Handbook since if the cables have been incorrectly fitted then it could result in M&C communications with the remote modem being lost. When the Remote M&C Ethernet port is bridged to the satellite IP Traffic port then the two modem Ethernet ports act as a two-port Ethernet switch.
Page 73: Acm Mode
Q-Lite Satellite Modem Installation and Operating Handbook 6.2.2.7 ACM Mode Table 6-44 lists the modes available with respect to Adaptive Coding and Modulation (ACM). ACM converts any unused link margin into additional IP throughput. When using DVB-S2, this switches ACM off in both transmit and receive.
Page 74: Acm Rain Fade Margin
Q-Lite Satellite Modem Installation and Operating Handbook 6.2.2.8 ACM Rain Fade Margin Range: 0dB to 9.9dB; step size: 0.1dB Description: This sets a margin used in the ACM control process when making decisions on what modcod to select based on the current Es/No reading of the remote modem.
Page 75: Traffic/Satelite Ip Addresses And Subnet Masks
Q-Lite Satellite Modem Installation and Operating Handbook Modem 0.0.0.0 Gateway Default: Description: Sets the IP address of a default gateway. The gateway represents the ‘next hop’ destination, which is normally the address of a router, for packets destined for somewhere other than the local network. This is used whenever the IP mode is set to Routing.
Page 76: Ip Encapsulation Type
Q-Lite Satellite Modem Installation and Operating Handbook 6.2.2.11 IP Encapsulation Type This selects Multi-Protocol Encapsulation (MPE) as the protocol for encapsulating IP packets and Ethernet frames for transmission over satellite when using DVB-S2. This protocol is widely supported and is therefore useful for interoperability.
Page 77: Mpe Mac Address
Q-Lite Satellite Modem Installation and Operating Handbook 6.2.2.13 MPE MAC Address Format 00:11:29:00:F0:23 example: Description: For DVB-S2 IP services, this is used for filtering of Multi-Protocol Encapsulation (MPE) packets on the receive side. The receiver will filter against whatever MAC address has been provided, which can therefore be a virtual MAC address rather than the receiver’s address.
Page 78: Ipv4/Ipv6 Mode
Q-Lite Satellite Modem Installation and Operating Handbook 6.2.2.15 IPv4/IPv6 Mode IPv4 only This enables the entry and display of IP addresses in IPv4 format only. The modem will bridge IPv4 and IPv6 packets when in IPv4 mode but will route only IPv4 packets.
Page 79 Q-Lite Satellite Modem Installation and Operating Handbook Auto In this mode the modem will auto-negotiate the Ethernet speed and duplex settings. 10M half duplex In this mode the modem will auto-negotiate the Ethernet speed and duplex settings but as part of the negotiation will ‘advertise’...
Page 80: Edit->Ip->Qos Screen
Q-Lite Satellite Modem Installation and Operating Handbook 6.2.3 Edit->IP->QoS Screen Traffic shaping is described in Section 7.8.9 6.2.4 Edit->IP->Static Routes Screen The Edit->IP->Static Routes screen, shown in Figure 6-22, allows up to 16 static routes to be added. Figure 6-22 Edit->IP->Static Routes Screen Each route consists of a destination IP address, subnet mask and a gateway address.
Page 81: Edit->Paired Carrier Screen
Q-Lite Satellite Modem Installation and Operating Handbook The Click to apply routes button must be selected to apply the static routes before navigating away from the web page. The Show Routes button can be used to display the underlying operating system ‘route add’...
Page 82 Q-Lite Satellite Modem Installation and Operating Handbook Paired Tx Modem Rx Modem Carrier Inversion Inversion Working? Non Inverting Non Inverting Non Inverting Inverting Inverting Inverting Inverting Non Inverting Table 6-53 Paired Carrier™ Spectral Inversion Control PLEASE READ THE FOLLOWING INFORMATION FOR FIRST-TIME SETUP OF A PAIRED CARRIER™...
Page 83 Q-Lite Satellite Modem Installation and Operating Handbook 7. Switch the second carrier off. To avoid non-linear distortion, ensure adequate HPA back-off when using multiple carriers through a single amplifier, particularly with higher order modulations when testing at a single site.
Page 84: Round-Trip Delay
Q-Lite Satellite Modem Installation and Operating Handbook uncertainty in the range to the satellite (via the Round-trip delay setting on the Edit->Paired Carrier menu). This has a significant effect on acquisition time. If using a round trip delay then try switching to using location information.
Page 85: Satellite Longitude
Q-Lite Satellite Modem Installation and Operating Handbook configured for RS232 at 4800 baud. The modem polls the serial port regularly for GPS position information. Two GPS protocols are supported, namely, Data (GGA) Geographic position Latitude/Longtitude (GLL). The modem will use whichever is provided. It...
Page 86: Minimum Round-Trip Delay
Q-Lite Satellite Modem Installation and Operating Handbook 6.2.5.6 Minimum Round-trip Delay Range: 0.01ms to 300ms ; step size: 0.01ms Description: The minimum satellite round-trip delay. To minimize the Paired Carrier™ acquisition time, set this to the actual measured satellite delay value (shown on the Status->PCMA screen) minus 0.5ms.
Page 87: Edit->Memories->Recall Screen
Q-Lite Satellite Modem Installation and Operating Handbook the front panel these go back to their factory defaults. This is done in order not to lose remote control of the modem from the web user interface when using it. LOAD_DEFAULTS cannot be erased or overwritten.
Page 88 Q-Lite Satellite Modem Installation and Operating Handbook Figure 6-26 Edit->Memories->Advanced Reversionary Control Screen The procedure for protecting and recovering a remote modem from failure during a configuration change is as follows. 1. Prepare in advance a configuration memory that represents a known ‘safe’ or default configuration for the remote modem.
Page 89: Edit->Memories->Store Screen
Q-Lite Satellite Modem Installation and Operating Handbook Figure 6-27 Edit->Memories->Advanced Reversionary Control Screen (Active state) 6.2.6.3 Edit->Memories->Store Screen The Edit->Memories->Store screen (shown in Figure 6-28) allows the current modem configuration to be stored to a configuration memoriy under a given name. It also displays all of the configurations that are already stored on the modem.
Page 90: Edit->Memories->Upload Screen
Q-Lite Satellite Modem Installation and Operating Handbook Figure 6-29 Edit->Memories->Download Screen 6.2.6.5 Edit->Memories->Upload Screen The Edit->Memories->Upload screen (shown in Figure 6-30) allows the user to browse to a location on their browser device where they have a configuration memory that they want to upload to the modem.
Page 91 Q-Lite Satellite Modem Installation and Operating Handbook Figure 6-31 Edit->Redundancy->1-for-1 Screen The Current status shows the 1:1 status of the modem. This will be shown as Main when the modem is online, Maintenance when the modem has been taken out of service, and Standby when the modem is offline, ready to switch over on a fault occurring on the online modem.
Page 92: View Screen
Q-Lite Satellite Modem Installation and Operating Handbook 6.2.8 View Screen The View screen (shown in Figure 6-32) allows the following to be viewed: Graphs. These include spectrum, constellation, throughput and time-based • performance graphs. None of these interfere with the service being provided by the modem.
Page 93: Rx Spectrum Monitor
Q-Lite Satellite Modem Installation and Operating Handbook Figure 6-33 Java Applet Security Warning Screen 6.2.8.1 Rx Spectrum Monitor The Rx Spectrum Monitor shown in Figure 6-34 is a powerful real-time spectrum analyser within the modem that is used to view the received signal spectrum.
Page 94: Rx Constellaton Monitor
Q-Lite Satellite Modem Installation and Operating Handbook The Span can be set to Normal, which limits the frequency span to that of the carrier, or Super Wide, which displays a frequency span of +/-25MHz centred on the carrier’s centre frequency. Super Wide is useful for checking for adjacent interfering carriers.
Page 95: Ip Graphs
Q-Lite Satellite Modem Installation and Operating Handbook Figure 6-36 Rx Constellation Monitor The Rx Constellation Monitor can be used to check for correct modem operation including checking for signal distortion and phase noise. The persistence mode is useful for showing any long-term effects due to phase noise and interference. Excessive phase noise can cause cycle skips, seen as unwanted rotations within the constellation.
Page 96 Q-Lite Satellite Modem Installation and Operating Handbook Figure 6-37 IP Throughput Graph QoS (traffic shaping) graphs are described in Section 7.8.9. An example ACM graph is shown in Figure 6-38. This shows the minimum, average and maximum terrestrial data rate over the selected time period. Note that this graph shows how the terrestrial data rate varies over time in direct relation to dynamic changes of modcod based on a varying Es/No from the remote modem.
Page 97: Other Time-Based Graphs
Q-Lite Satellite Modem Installation and Operating Handbook Figure 6-38 ACM Terrestrial Data Rate Graph Figure 6-39 ACM Terrestrial Data Rate Graph (Short time period) 6.2.8.4 Other Time-based Graphs A number of time-based graphs can be displayed. Graphical values are stored for 31 calendar days or until the modem is powered down.
Page 98: Alarms
Q-Lite Satellite Modem Installation and Operating Handbook The web interface supports display of the following time-based graphs: Modem internal temperature. • The modem received signal Eb/No. • The modem received power level. • Receive frequency offset from centre frequency. •...
Page 99: System Log
Q-Lite Satellite Modem Installation and Operating Handbook Figure 6-41 System Alarms Screen 6.2.8.6 System Log The system log can be viewed using the View->Log screen shown in Figure 6-42. The Clearc button can be used to delete all of the entries in the log. The Download Log file button can be used to download a text file of the log contents to the browser device.
Page 100: View->Unit Screen
Q-Lite Satellite Modem Installation and Operating Handbook Figure 6-43 View->Setup Screen 6.2.8.8 View->Unit Screen The View->Unit screen shown in Figure 6-44 displays manufacturing information (including the software version number and the hardware fitted), power supply voltage levels, modem temperature indication, loopback status and the IP address of the M&C port (for when this has been set using DHCP).
Page 101: View->Saf Screen
Q-Lite Satellite Modem Installation and Operating Handbook Figure 6-44 View->Unit Screen 6.2.8.9 View->SAF Screen The View->SAF screen shown in Figure 6-45 displays the status of each modem Software Activated Feature (SAF) indicating whether they are on, off or temporarily enabled. It also shows how many test shots remain along with the remaining test time.
Page 102: Test Screen
Q-Lite Satellite Modem Installation and Operating Handbook Figure 6-45 View->SAF Screen 6.2.9 Test Screen The Test screens (shown in Figure 6-46 and Figure 6-47) supports the following test functions: Loopback. This allows selection of internal loopback between the transmit and receive •...
Page 103: Ber Test
Q-Lite Satellite Modem Installation and Operating Handbook Figure 6-46 Test Screen The Loopback setting allows a number of loopbacks to be selected to aid fault diagnosis and resolution of system level problems. IF (local) is used to loopback transmit to receive internally within the modem.
Page 104 Q-Lite Satellite Modem Installation and Operating Handbook Figure 6-47 BER Test Generator/Analyser Screen Data Invert allows an inverted data bit stream to be transmitted (or received if selected on the analyser). The Inject Error button can be used to inject a single error into the bit pattern, which should increment the number of bit errors by one.
Page 105: Front-Panel Interface
Q-Lite Satellite Modem Installation and Operating Handbook 6.3 Front-panel Interface The use of a front-panel keypad and LCD display is optional. The keypad and display are not provided as standard. The modem software will automatically detect and respond to them if they are present.
Page 106: Alphanumeric Keys
Q-Lite Satellite Modem Installation and Operating Handbook ENTER Key On a menu, the ENTER key is used to navigate to the submenu highlighted by the cursor. When entering or selecting a new value, the ENTER key is used to accept the new value...
Page 107: Lcd Screen Layout
Q-Lite Satellite Modem Installation and Operating Handbook Log/Alarm Clear The system log and system alarms can be cleared by pressing the 0 key when on the front-panel View->Log and View->Alarms screens. Buffer Overflow / Underflow clear The buffer Overflow and Underflow slip counters can be cleared by pressing the 0 key when on the front-panel Status->Demodulator screen.
Page 108: Front Panel Menu Structure
Q-Lite Satellite Modem Installation and Operating Handbook 6.4 Front Panel Menu Structure The menu hierarchy for the front panel is described in the following sections. 6.4.1 Main Menu [London-New York] 1:Status 2:Edit 3:View 4:Test The Main menu can be accessed from any display by pressing the MAIN key. It is from this menu that all functions are selected.
Page 109: Status Menu
Q-Lite Satellite Modem Installation and Operating Handbook 6.4.2 Status Menu Figure 6-48 Front-panel Status Menus 6-78...
Page 110: Edit Menu
Q-Lite Satellite Modem Installation and Operating Handbook 6.4.3 Edit Menu Figure 6-49 Front-panel Edit Menus 6-79...
Page 111: Edit->Tx Menu
Q-Lite Satellite Modem Installation and Operating Handbook 6.4.3.1 Edit->Tx Menu Figure 6-50 Front-panel Edit->Tx Menus 6-80...
Page 112: Edit->Rx Menu
Q-Lite Satellite Modem Installation and Operating Handbook 6.4.3.2 Edit->Rx Menu Figure 6-51 Front-panel Edit->Rx Menus 6-81...
Page 113: Edit->Unit Menu
Q-Lite Satellite Modem Installation and Operating Handbook 6.4.3.3 Edit->Unit Menu Figure 6-52 Front-panel Edit->Unit Menus 6-82...
Page 114: View Menu
Q-Lite Satellite Modem Installation and Operating Handbook 6.4.4 View Menu Figure 6-53 Front-panel View Menus 6.4.5 Test Menu Figure 6-54 Front-panel Test Menus 6-83...
Page 115: Chapter 7 Modem Concepts
Q-Lite Satellite Modem Installation and Operating Handbook Chapter 7 Modem Concepts 7.1 System Clocking There are two terms commonly used when referring to the receive buffering, namely Doppler and Plesiochronous. Doppler: Receive Doppler buffering is required because the incoming data from the satellite is subject to Doppler shift, which occurs in an approximately 24-hour cycle.
Page 116: Transmit Clocking
Q-Lite Satellite Modem Installation and Operating Handbook 7.1.1 Transmit Clocking There are three transmit clocking modes that are used in the modem. 7.1.1.1 Internal Clock When Internal is selected, the modem, which is always configured to be a Data Communications Equipment (DCE), supplies the clock. This is provided by the modem to the Data Terminal Equipment (DTE) via the External Transmit Clock (ETC) signal line for using in clocking the data through to the modem.
Page 117: Receive Reference
Q-Lite Satellite Modem Installation and Operating Handbook Tx Data Tx Clock (TT) Internal Tx Clock (ST) Modem Tx Data Interface FIFO TCXO VCXO Figure 7-2 External Tx Clock Mode 7.1.1.3 Receive Reference When Receive Reference is selected, it allows the modem to provide an ST clock to the DTE that is locked to the receive satellite signal.
Page 118: Receive Clocking
Q-Lite Satellite Modem Installation and Operating Handbook 7.1.2 Receive Clocking There are four receive clocking modes that are used in the modem. 7.1.2.1 Satellite When Satellite is selected, the modem disables the Rx Doppler buffer and derives a clock from the incoming satellite signal. This means that the signal will be subject to Doppler/plesiochronous offsets.
Page 119: Station Clock
Q-Lite Satellite Modem Installation and Operating Handbook Rx Data Rx Clock (RT) Modem Rx Data Interface Rx Buffer Data from VCXO decoder/deframer Tx Clock (TT) Tx Data I/F Tx FIFO Figure 7-5 Tx Clock In Rx Clock Mode 7.1.2.3 Station Clock When Station is selected, the modem’s Rx timing is phase-locked to the station clock...
Page 120: Internal Clock
Q-Lite Satellite Modem Installation and Operating Handbook 7.1.2.4 Internal Clock When Internal is selected, the modem’s Rx timing is phase locked to the modem’s internal clock but is run at the Rx data rate frequency. The Rx Doppler buffer is enabled.
Page 121: No Clock Loop
Q-Lite Satellite Modem Installation and Operating Handbook rule of thumb, 2ms end-to-end buffering should be sufficient for one satellite hop and 4ms for a round trip where twice the Doppler shift is required. Set the Tx and Rx clocks as follows: When the clock is provided via the terrestrial interface Set Tx clock to Tx clk in and Rx clock to Tx clk in.
Page 122: Clock Extension
Q-Lite Satellite Modem Installation and Operating Handbook For end-to-end buffering, with a Doppler allowance of 2ms: Bs = 0.002 + 172800 x Ms x (Lc + Rc) seconds. Using the bracketed example figures above gives a result of 0.00898 seconds, requiring a buffer size of 9ms to absorb the plesiochronous effects.
Page 123: Configuring Aupc
Q-Lite Satellite Modem Installation and Operating Handbook adjusting the local power output of the satellite link in order to maintain the specified remote-end Eb/No. Note that if the rain is falling at the local end of the link then the power seen at the satellite will be unchanged.
Page 124: 1:1 Redundancy Operation
Q-Lite Satellite Modem Installation and Operating Handbook 7.3 1:1 Redundancy Operation 7.3.1 Overview Two modems can operate as a 1:1 redundant pair using a single interconnecting lead, two power splitters/combiners and cable forms to parallel up the terrestrial interfaces of both units.
Page 125: Setup Procedure
Q-Lite Satellite Modem Installation and Operating Handbook faults that are external to the equipment that affect both units simultaneously do not result in any switchover. L-band services can be configured to switch with the modem or to remain with the online modem after it has failed.
Page 126: 1:N Ip Operation
Q-Lite Satellite Modem Installation and Operating Handbook 4. The M&C IP address and the traffic IP address should be on different subnets. The modem defines one default gateway. If the second subnet also requires a gateway then a static route should be added that defines a gateway for that subnet.
Page 127: Software Upgrading
To enable one or more features permanently (referred to as Permanent Mode), a modem-specific feature code needs to be obtained from Teledyne Paradise Datacom. The code is tied to the modem serial number (available via the user interfaces and on the back panel).
Page 128: Linkguard™ Interference Detection
Q-Lite Satellite Modem Installation and Operating Handbook 7.6 LinkGuard™ Interference Detection LinkGuard™ is a Paradise patent-pending technology for detecting in-band interference underneath satellite carriers while remaining on traffic. A visual indication of any unwanted interference is provided through a signal-under-carrier spectrum web graph showing the wanted carrier along with any unwanted interference.
Page 129: Fastlink Low-Latency Ldpc
Q-Lite Satellite Modem Installation and Operating Handbook LinkGuard™ detects various forms of interference including tonal interferers (such as CW), radars, Wi-MAX, jammers and other modulated carriers including adjacent interfering carriers. If there is more than one source of interference then it will detect and display all of them.
Page 130 FastLink LDPC is compatible with Paired Carrier. FastLink does not interoperate with any other LDPC. FastLink performance (a full set of BER graphs and latencies) is defined in a separate datasheet available from the Teledyne Paradise Datacom web site at http://www.paradisedata.com. FastLink performance is summarized in Table 7-1.
Page 131 Q-Lite Satellite Modem Installation and Operating Handbook FastLink Code Rate Eb/No for 5e-8 (Guaranteed) Latency (ms) at 64kbps Modulation Balanced Balanced Latency Latency BPSK 0.499 (O)QPSK 0.532 (O)QPSK 0.639 (O)QPSK 0.710 (O)QPSK 0.798 8PSK 0.639 See Note 1 8PSK 0.710...
Page 132 Q-Lite Satellite Modem Installation and Operating Handbook Note 1: 8PSK rate 0.639 operates at a BER QEF point of 1e-12 only, with Eb/No (guaranteed) • as follows: Low BER mode: 5.9dB Balanced mode: 6.2dB Low Latency mode: 6.7dB Note 2: 8PSK rate 0.710 can be used in a Low BER mode at a BER QEF point of 1e-12 only, •...
Page 133: Ip Functionality
Q-Lite Satellite Modem Installation and Operating Handbook 7.8 IP Functionality 7.8.1 Base Modem IP As shown in Figure 7-10, the modem has one RJ45 auto-sensing Gigabit Ethernet port for M&C and one for sending and receiving satellite IP traffic. Figure 7-10 Modem Ethernet Ports Both of the Ethernet connections by default form part of an Ethernet bridge and share an IP address.
Page 134: Ip Addressing
Q-Lite Satellite Modem Installation and Operating Handbook 7.8.2 IP Addressing The two ports on the IP card are bridged together, acting as a two-port switch. This is true regardless of what bridging or routing mode is selected. In bridging mode, IP addresses are not used so there is no restriction on what subnets are off the two traffic card ports.
Page 135 Q-Lite Satellite Modem Installation and Operating Handbook Because the ESC is a serial interface, IP will not run directly on top of it – the modem encapsulates IP packets within PPP, much the same as a dial-up modem connecting to the internet.
Page 136: Ip Interoperability
Q-Lite Satellite Modem Installation and Operating Handbook 7.8.6 IP Interoperability Over satellite, the modem uses HDLC to encapsulate the Ethernet frames or IP packets (unless DVB-S2 is being used, in which case another form of encapsulation is used such as MPE or ULE). If Cisco HDLC is selected on the modem then the received IP stream can be forwarded out of a serial interface to a serial router that supports Cisco HDLC, which can convert it back to IP.
Page 137: Traffic Shaping
Q-Lite Satellite Modem Installation and Operating Handbook 7.8.9 Traffic Shaping Traffic shaping provides greater control over the management of data within the modem. Specifically it provides a guaranteed quality of service for defined IP data streams. It is aligned with all of the major quality of service schemes and can be used to extend terrestrial services over satellite to create fully provisioned end-to-end services, thereby providing direct support for the implementation of customer service level agreements.
Page 138: Priority
Q-Lite Satellite Modem Installation and Operating Handbook 7.8.9.3 Priority What happens when excess bandwidth does become available (i.e. all guaranteed bandwidths are being met and there is spare capacity) in the situation where several streams have BIRs set (meaning that they are all potentially competing for the same excess bandwidth)? This is determined by the stream Priority setting.
Page 139 Q-Lite Satellite Modem Installation and Operating Handbook The example in Figure 7-11 shows a traffic shaping scheme based on matching on source address and source port number. Note the Enable shaping checkbox, which controls whether traffic shaping is enabled or not. The Input mode can be set the entry method to bits per second, or percentage input.
Page 140 Q-Lite Satellite Modem Installation and Operating Handbook In another example, assume Class 2 is being received at 400,000bps and Class 1 at 950,000bps. In this situation the Class 1 data stream will be allocated 800,000bps, its maximum, while Class 2 will be allocated only 200,000bps. The spare bandwidth is allocated to Class 1 first because it has a higher priority.
Page 141 Q-Lite Satellite Modem Installation and Operating Handbook The priority tag has eight possible values, each of which maps directly to an equivalent internal class within the modem (for which a BIR, CIR, etc. can be set). Each packet passed to the modem must have this field set to the appropriate value in order for the modem to recognize the different data streams.
Page 142: Traffic Shaping Graphs
Q-Lite Satellite Modem Installation and Operating Handbook Figure 7-13 Traffic Shaping Configuration Screen using IEEE 802.1p Priority Tags 7.8.9.4.4 MPLS EXP Stream classification may be based on MPLS QoS, specifically the 3-bit EXP field in the MPLS header. This is often used to support Diffserv in MPLS networks. The MPLS EXP field has eight possible values, mapping directly to equivalent internal modem classes (0 to 7) each of which can be shaped using its own CIR, BIR, etc.
Page 143: Static And Dynamic Routing
Q-Lite Satellite Modem Installation and Operating Handbook 7.8.10 Static and Dynamic Routing The modem can be operated as a two-port static router, one port being the terrestrial interface and the other port being the satellite interface. Static routing is useful for small networks that do not require dynamic routing –...
Page 144: Vlan Operation
Q-Lite Satellite Modem Installation and Operating Handbook Ethernet header compression is also supported. The 14 bytes of Ethernet frame (the Ethernet CRC is not sent over satellite even when compression is off) are typically reduced to one byte. Example: G.729 packet with 20ms (20 bytes) of payload: •...
Page 145 Q-Lite Satellite Modem Installation and Operating Handbook ACM works in conjunction with DVB-S2 (although the return channel does not have to be DVB-S2 unless ACM operation is required for both outbound and inbound carriers). By varying the error correction strength to match atmospheric conditions, link margin is converted into useful bandwidth.
Page 146 Q-Lite Satellite Modem Installation and Operating Handbook Modcod changes are totally transparent at the receiver - it does not involve the demodulator having to reacquire the signal. Modcod changes can be made instantly whenever required, maximising throughput at all times.
Page 147: Dvb-S2 And Smartlink
Q-Lite Satellite Modem Installation and Operating Handbook 7.9 DVB-S2 and SmartLink The Q-Lite™ modem supports SCPC, DVB-S2 and combined SCPC/DVB-S2 operation. The DVB-S2 standard was approved by ETSI (European Telecommunications Standards Institute) in November of 2006. The new standard incorporates the latest technology in order to provide greater spectral efficiency and improved stability, using high-order modulation schemes and more powerful FEC coding.
Page 148 Q-Lite Satellite Modem Installation and Operating Handbook Figure 7-14 Processing Paths through Modem (Top path is SCPC; lower path is DVB-S2/SmartLink) If DVB-S2 is required but no SCPC features are required then as well as selecting SmartLink, the Tx or Rx service should be set to Closed network as this does not add any extra framing to that provided by DVB-S2.
Page 149 Q-Lite Satellite Modem Installation and Operating Handbook If a DVB-S2-only service is required for an interface other than IP then the Closed Network service should be selected, along with the SmartLink FEC option. This will provide a DVB-S2 service with no additional SCPC framing overhead.
Page 150: Paired Carrier
Q-Lite Satellite Modem Installation and Operating Handbook 7.10 Paired Carrier™ Paired Carrier™ can be used to reduce satellite bandwidth requirements by up to 50% by overlapping transmit and receive carriers in the same space segment. It uses ViaSat’s patented PCMA technology. Adaptive self-interference cancellation is used to subtract the unit’s transmitted signal from the composiste received signal, leaving just the desired...
Page 151 Q-Lite Satellite Modem Installation and Operating Handbook Figure 7-16 Q-Lite™ Modem Paired Carrier Processing Paired Carrier™ can be added to existing systems as well as being incorporated into the design of new systems. The signal cancellation techniques used guarantees at least 25dB (typically 30dB) cancellation of the unwanted signal meaning that the uplink and downlink signals can share the same space segment.
Page 152 It is used in addition to, not instead of, other bandwidth saving techniques. Paired Carrier™ and DVB-S2 represent two of the most bandwidth-efficient technologies available today and can be used together in the Q-Lite™ modem. Some frequently asked questions about Paired Carrier™ operation along with answers are provided below.
Page 153 Paired Carrier™ need to be set up. Set up takes less than five minutes in total. Q. Is Paired Carrier™ available as a field upgrade? A. Yes. All Q-Lite™ modems can be field upgraded to support Paired Carrier™ operation to the desired cancellation bandwidth.
Page 154: Chapter 8 Remote Control Protocol
RS232) or through an application that uses a driver developed specifically to implement the PUP protocol. In the case of RS485, a message wrapper (defined in the document ‘Remote M&C Specification for Q-Lite™ Satellite Modem’) is used to encapsulate PUP commands and responses, which are incorporated into the message payload.
Page 155 Q-Lite Satellite Modem Installation and Operating Handbook Login to the modem to be able to make changes. (The response has a value of *.) r a d i s 02 15 01 09 6C 6F 67 69 6E 20 70 61 72 61 64 69 73 65 2A B6 03 02 08 01 09 20 2A 54 03 Set the transmit power to a new value.
Page 156: Chapter 9 Data Interfaces
Q-Lite Satellite Modem Installation and Operating Handbook Chapter 9 Data Interfaces The modem provides Ethernet IP interfaces as standard plus options for LVDS, EIA530 (RS422, V.35, and RS232), IDR, HSSI, G.703 (balanced and unbalanced), Quad E1, IP traffic and Eurocom D1 interfaces. There are four data interface positions on the modem.
Page 157 Q-Lite Satellite Modem Installation and Operating Handbook Q3001 LVDS Interface The LVDS interface is used as follows. Signal Description LVDS Circuit 25 pin Electrical Name Number Levels DATA CIRCUIT TOWARDS MODEM (TX) Clock In LVDS Data In LVDS ’ LVDS Valid In ’...
Page 158 Q-Lite Satellite Modem Installation and Operating Handbook By selecting Advanced it is possible to configure the modem to raise an alarm if either the `Sig` Valid In` line (RS) or `Device (DTE) Ready In` line (TR) switch to the inactive state. It is also possible to configure the Tx carrier to be switched on and off by the `Sig` Valid In` line (RS) by selecting Edit->Tx->Carrier and selecting RTS enabled.
Page 159 Q-Lite Satellite Modem Installation and Operating Handbook The input clock/data phase is selected automatically, reporting a Data Marginal warning whenever it has to switch phase. If the modem reports Data Marginal frequently then this is not a modem fault but an indication that there is a clocking problem external to the modem (i.e.
Page 160 Q-Lite Satellite Modem Installation and Operating Handbook Signal Description RS422 Circuit 25 pin Electrical Name Number Levels DATA CIRCUIT TOWARDS MODEM (TX) Clock In RS422 Data In RS422 ’ RS422 Valid In ’ RS422 Sig Accpt d Out ’ RS422...
Page 161 Q-Lite Satellite Modem Installation and Operating Handbook EIA-530 Interface in V.35 Mode The EIA-530 interface is used inV.35 mode as follows. Signal Description V.35 Circuit 25 pin Electrical Old Style Name Number Levels Winchester DATA CIRCUIT TOWARDS MODEM (TX) Clock In SCTE V.35...
Page 162 Q-Lite Satellite Modem Installation and Operating Handbook By selecting Advanced it is possible to configure the modem to raise an alarm if either the `Sig= Valid In` line (RTS) or `Device (DTE) Ready In` line (DTR) switch to the inactive state.
Page 163 Q-Lite Satellite Modem Installation and Operating Handbook For the Synchronous RS232 interface theinput clock/data phase is selected automatically, reporting a `Data Marginal` warning whenever it has to switch phase. If the modem reports Data Marginal frequently then this is not a modem fault but an indication that you have a clocking problem external to the modem (ie changing clock/data phase, a problem which would otherwise have caused untraceable data errors).
Page 164 Q-Lite Satellite Modem Installation and Operating Handbook X.21 DCE Operation This has only a clock from the modem to the terrestrial equipment. Configure a cable with a 15 pin `D` female at one end (X.21 DCE) and a 25 pin `D` male at the other end as follows: X.21 DCE...
Page 165 Q-Lite Satellite Modem Installation and Operating Handbook X.21 DTE Operation This has only a clock to the modem from the terrestrial equipment. Configure a cable with a 15 pin `D` male at one end (X.21 DTE) and a 25 pin `D` male at the other end as follows: X.21 DTE...
Page 166 Q-Lite Satellite Modem Installation and Operating Handbook Interface Rate Bit rate Line code Impedance Card Connector 1544kbps 100 ohm RJ45 1544kbps B8ZS 100 ohm RJ45 2048kbps HDB3 120 ohm RJ45 2048kbps HDB3 75 ohm 6312kbps B6ZS 110 ohm RJ45 6312kbps...
Page 167 Q-Lite Satellite Modem Installation and Operating Handbook Line code is fixed as HDB3 for all ports. The master clock source for all ports is the lowest active port number that is configured and connected. For example, if port one is being used then this provides the clock source for all other ports, which are slaved to this clock.
Page 168: Chapter 10 Connector Pinouts
Q-Lite Satellite Modem Installation and Operating Handbook Chapter 10 Connector Pinouts Q-Lite™ Compact Modem Circuit Board POWER 4-way screw terminal +24 Volts +24 Volts Ground Ground ETHERNET 10/100/1G 4 x RJ45 50 Ohm TNC 50 Ohm TNC FAN (J12) 2-pin Molex...
Page 169 Q-Lite Satellite Modem Installation and Operating Handbook LCD DISPLAY 16-pin Molex +3.3 Volts Ground Data nCmd Enable R/nW LED K LED A MEMBRANE 20-way ZIF Row 4 Row 0 Row 3 Row 1 Row 2 Carrier Green Carrier Yellow Test Green Test Yellow +3.3 Volts...
Page 170 Q-Lite Satellite Modem Installation and Operating Handbook BUC PSU (J11) 6-pin Micro-fit 3 Ground Ground Sense +24 Volts/+48 Volts +24 Volts/+48 Volts Ground P3719 Utilities Card USB Type A VBUS Ground ALARMS and AGC 15-pin, Male, D-type, High density Alarm 4 N/O (Deferred Alarm)
Page 171 Serial IN (B) Fail In Fail Out Serial Out (A) Serial Out (B) A standard 1:1 lead (part number P1391) is available from Teledyne Paradise Datacom. The lead is 10cm long. STATION CLOCK 75 Ohm BNC 2-pin Molex +12 Volts...
Page 172: Chapter 11 Fault Messages
Q-Lite Satellite Modem Installation and Operating Handbook Chapter 11 Fault Messages The following table lists all of the modem faults along with a description of what the fault means. It also describes relevant checks the operator might make to try to eliminate the fault condition.
Page 173: Transmit Faults
Q-Lite Satellite Modem Installation and Operating Handbook 11.1 Transmit Faults Fault Text Notes Relays To Ter To Sat Other Tx fault: External Tx clock The modem is set to use an external clock but no clock is SA,SC selected, but no clock being provided.
Page 174 Q-Lite Satellite Modem Installation and Operating Handbook Fault Text Notes Relays To Ter To Sat Other fault: The current drawn by the BUC has exceeded the outside limits. permissible upper & lower limits. fault: terrestrial Consult technical support if this alarm cannot be cleared.
Page 175: Transmit Warnings
Q-Lite Satellite Modem Installation and Operating Handbook 11.2 Transmit Warnings Fault Text Notes Relays To Ter To Sat Other warning: Maximum Framer failed to find a frame length to support TS ID multiframe period maintenance. Try reducing ESC baud rate or small.
Page 176: Receive Faults
Q-Lite Satellite Modem Installation and Operating Handbook 11.3 Receive Faults Fault Text Notes Relays To Ter To Sat Other The demodulator can lock to the carrier and the inner Rx fault: RS de-interleaver FEC decoder to the demodulated data. However, the...
Page 177 Q-Lite Satellite Modem Installation and Operating Handbook Fault Text Notes Relays To Ter To Sat Other This is as a result of setting the modem to mute terrestrial data on an rx loss of sync (where the data Rx fault: Terrestrial muted isunmuted when the Eb/no threshold is exceeded).
Page 178: Receive Warnings
Q-Lite Satellite Modem Installation and Operating Handbook 11.4 Receive Warnings Fault Text Notes Relays To Ter To Sat Other Rx warning: Doppler buffer Buffer size should not exceed 80ms when data rate max limited Rx data rate exceeds 42Mbps above 42Mbps.
Page 179 Q-Lite Satellite Modem Installation and Operating Handbook Fault Text Notes Relays To Ter To Sat Other A backward alarm has been detected at the Rx input. This indicates that equipment downstream of the transmit Rx warning: Backward path (i.e. from the modem Tx output) has failed and is alarm from satellite returning an alarm.
Page 180: Unit Faults
Q-Lite Satellite Modem Installation and Operating Handbook 11.5 Unit Faults Fault Text Notes Relays Other A PSU line has failed. The unit has a linear supply and Unit fault: One or more will fail if the mains input is below the specified minimum...
Page 181: Unit Warnings
Q-Lite Satellite Modem Installation and Operating Handbook 11.6 Unit Warnings Fault Text Notes Relays To Ter To Sat Other Unit warning: One or more of the cooling fans have failed. Unit warning: One or more One of the PSU on the redundancy switch have failed PSU rails are out of range.
Page 182: Chapter 12 Specification Summary
Q-Lite Satellite Modem Installation and Operating Handbook Chapter 12 Specification Summary 12.1 Common Main Specifications Parameter Modem BPSK, QPSK, OQPSK, 8PSK (Option), 8QAM (Option), Modulation Scheme 16APSK (Option), 16QAM (Option), 32APSK (Option), 64QAM (Option) L-band Frequency 950 – 2050 MHz...
Page 183 Q-Lite Satellite Modem Installation and Operating Handbook DVB-S2 (LDPC/BCH) option: as per EN 302 307 - QPSK, 8PSK, 16APSK; rates 1/4 to 9/10 SCPC: Note BPSK and (O)QPSK provided as standard; other modulations are options FastLink Low-Latency LDPC option: BPSK 0.499 (O)QPSK 0.532, 0.639, 0.710, 0.798...
Page 184: Tx Modulator Specifications
Q-Lite Satellite Modem Installation and Operating Handbook 12.2 Tx Modulator Specifications Parameter Modem L-band Output Power 0 to –30dBm continuously variable in 0.1dB steps Level Output Level Stability ±0.5dB, 0ºC to 50ºC Spectral roll-off factors of 5%, 10%, 15%, 20%, 25% and 35%.
Page 185: Rx Demodulator Specifications
Q-Lite Satellite Modem Installation and Operating Handbook 12.3 Rx Demodulator Specifications Parameter Modem Minimum: -130+10 log symbol rate L-band Input Range Maximum: -80+10 log(symbol rate) L-band Maximum +10dBm Composite signal Wanted-to-composite -102+10 log (symbol rate) Level Selectable from ±1kHz to ±32kHz up to 10 Mbps...
Page 186: Framing And Deframing Specifications
Q-Lite Satellite Modem Installation and Operating Handbook 75 BNC female Station Clock Connector, transformer isolated. 1MHz to 10MHz in 1kHz steps (accepts sinusoidal >0dBm or square-wave e.g., G.703 para 10 120 RS422 compatible input, 1MHz to 10MHz in Station Reference Inputs...
Page 187: Extended Drop And Insert Option Specifications
Q-Lite Satellite Modem Installation and Operating Handbook Closed Net Plus ESC overhead maintains the identity of individual Drop/Insert timeslots for Timeslot ID Maintenance N=1,2,3,4,5,6,8,10,12,15,16,20,24 and 30. (See extended option below). 12.7 Extended Drop and Insert Option Specifications Parameter Modem All or only a subset of the received data may be...
Page 188 Q-Lite Satellite Modem Installation and Operating Handbook FEC Rate Min Data Max Data Modulation/FEC de facto Rate kbps Rate Mbps BPSK VIT / SEQ 15 / 2 BPSK VIT / SEQ 22.5 / 2 BPSK VIT / SEQ 26.2 / 2 BPSK VIT RS 13.33...
Page 189: Traffic Log Specifications
Q-Lite Satellite Modem Installation and Operating Handbook 12.10 Traffic Log Specifications Parameter Modem Capacity Over 6000 entries Fault message with time and date stamp. Entry Format Separate entry when fault clears/changes. 12.11 Common Specifications Parameter Modem Interface Loop (Local and Remote)
Page 190: Internet Traffic
Parameter Modem Any BUC PSU up to 200W can be connected to the BUC Power Supply Q-Lite, which will route the power out through the Tx Options TNC to the BUC. LNB Power +15/24V 0.5A DC to LNB via Rx IFL (standard) Requires P3719 Utilities card.
Page 191: Performance Graphs
Q-Lite Satellite Modem Installation and Operating Handbook 12.14 Performance Graphs For FastLink low-latency LDPC BER curves, please see separate datasheet on the Teledyne Paradise Datacom web site at http://www.paradisedata.com. 12-10...
Page 192 Q-Lite Satellite Modem Installation and Operating Handbook Figure 13-1 Modem Error Probability versus Eb/No for 8PSK/TCM 12-11...
Page 193 Q-Lite Satellite Modem Installation and Operating Handbook Figure 13-2 Modem Error Probability versus Eb/No for TPC QPSK 12-12...
Page 194 Q-Lite Satellite Modem Installation and Operating Handbook 1.00E-02 Test Conditions FEC: Turbo Rate: 2048kHz 8PSK Tx: 70.000 MHz Rx 70.000 MHz 1.00E-03 Scrambling: Normal (Turbo) Input Level: -45 1.00E-04 1.00E-05 1.00E-06 1.00E-07 Rate 3/4 Rate 7/8 Spec Limit Spec Limit 1.00E-08...
Page 195 Q-Lite Satellite Modem Installation and Operating Handbook Figure 13-4 Modem Error Probability versus Eb/No FOR TPC 16QAM 12-14...
Page 196 Q-Lite Satellite Modem Installation and Operating Handbook Paradise Turbo Product Code Rate 0.93 1.00E-03 Paradise 16QAM Typ Paradise 16QAM Spec Paradise 8PSK Typ Paradise 8PSK Spec Paradise QPSK Typ Paradise QPSK Spec Comtech 8PSK Typ 1.00E-04 Comtech 8PSK Spec Comtech QPSK Typ Comtech QPSK Spec 1.00E-05...
Page 197: Chapter 13 Advanced Framing
Q-Lite Satellite Modem Installation and Operating Handbook Chapter 13 Advanced Framing This chapter describes the advanced framing options available on the modem. 13.1 Edit->Tx-Rx->Framing Screen The Edit->Tx-Rx->Framing screen, shown in Figure 13-1, allows configuration of framing, timeslots and overhead. Figure 13-1 Edit->Tx-Rx->Framing Screen The menu contains the following options: Baseband mode.
Page 198: Edit->Tx-Rx>Framing->Overhead Closed Screen
Q-Lite Satellite Modem Installation and Operating Handbook 13.2 Edit->Tx-Rx>Framing->Overhead Closed Screen The Edit->Tx-Rx->Framing->Overhead Closed screen, shown in Figure 13-2 controls the overhead in Closed Network Plus ESC mode, allowing the high-rate asynchronous ESC channel to be set up. Figure 13-2 Edit->Tx-Rx->Framing->Overhead Closed Screen This contains the following options: ESC interface baud rate.
Page 199 Q-Lite Satellite Modem Installation and Operating Handbook For IP, the modem will allocate internal IP addresses to each end of the ESC channel and these will only be visible internally within the modem. The RS485-Local and RS485-Remote modes are referred to as Link-Local and Link- Remote, respectively.
Page 200: Edit->Tx-Rx>Framing->Overhead Ibs Screen
Q-Lite Satellite Modem Installation and Operating Handbook The effect of Link-Local is to transmit whatever is received over the satellite ESC channel out onto the local modem’s M&C bus, while at the same time, transmitting all incoming M&C messages out over the satellite ESC channel.
Page 201: Edit->Tx-Rx>Framing->Overhead Idr Screen
Q-Lite Satellite Modem Installation and Operating Handbook IBS Aux mode. This controls the operating mode of the Aux channel, controlling • the allocation of overhead between the Aux and ESC interfaces. The Aux channel can be set to Off, Intelsat over-sampled or Synchronous.
Page 202 Q-Lite Satellite Modem Installation and Operating Handbook This contains the following options: IDR 8k ESC mode. This controls the operating mode of the low-rate IDR ESC • channel, which can be set to Off, Synchronous or Asynchronous. ESC interface baud rate. IBS uses a fixed frame format and therefore the amount •...
Page 203: Edit->Tx-Rx>Advanced Drop And Insert Screens
Q-Lite Satellite Modem Installation and Operating Handbook 13.5 Edit->Tx-Rx>Advanced Drop and Insert Screens The Edit->Tx-Rx->Advanced screen will show options as displayed in Figure 13-5 and Figure 13-6 when G.703 or Quad E1 is selected as the terrestrial interface type. These allow the selection of timeslots for transmission and reception. They allow the association of specific terrestrial timeslots with satellite timeslots.
Page 204: Chapter 14 Glossary
Q-Lite Satellite Modem Installation and Operating Handbook Chapter 14 Glossary 8PSK Eight Phase Shift Keying 16QAM Sixteen Quadrature Amplitude Modulation Adaptive Coding and Modulation ADPCM Adaptive Differential Pulse Code Modulation Automatic Gain Control AUPC Automatic Up-link Power Control Bit Error Rate...
Page 205: Chapter 15 Technical Support
3. Provide an official Purchase Order to cover the cost of any repairs or sign disclaimer on the Fault Report page. 4. Outside of the UK, contact either the UK or US Teledyne Paradise Datacom offices for a Return Material Authorisation (RMA) number and information on import/export procedures.

Teledyne Q-Lite Installation And Operating Handbook

Chapter 1 Welcome

Chapter 2 About this Handbook

Chapter 3 Safety and Compliance Information

Chapter 4 Installation

Chapter 5 Introduction

Chapter 6 User Interfaces

Chapter 7 Modem Concepts

Chapter 8 Remote Control Protocol

Chapter 9 Data Interfaces

Chapter 10 Connector Pinouts

Chapter 11 Fault Messages

Chapter 12 Specification Summary

Chapter 13 Advanced Framing

Chapter 14 Glossary

Chapter 15 Technical Support

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