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Teledyne Q-Flex Installation And Operating Handbook

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Installation and Operating Handbook
Teledyne Paradise Datacom Ltd.
2&3 The Matchyns, Rivenhall End,
Witham, Essex, CM8 3HA, England.
Tel: +44(0)1376 515636
Fax: +44(0)1376 533764
Copyright © 2013-2015 Teledyne Paradise Datacom Ltd. All rights reserved.
Q-Flex™ Satellite Modem
Issue 3.0.55, 30 January 2015
EN 55022 - Class B
EN 55024
EN 60950
http://www.paradisedata.com
2015
Teledyne Paradise Datacom LLC
328 Innovation Blvd.
State College, PA 16803, U.S.A.
Tel: +1 814 238 3450
Fax: +1 814 238 3829

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  • 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 © 2013-2015 Teledyne Paradise Datacom Ltd. All rights reserved.

  • Page 2: Table Of Contents

    Q-Flex 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-Flex 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-Flex Satellite Modem Installation and Operating Handbook 6.2.4.6 Mute BUC Services in Standby ............. 6-26 6.2.4.7 LNB Type ....................6-27 6.2.4.8 LNB LO Frequency ................6-27 6.2.4.9 DC to LNB ..................... 6-27 6.2.4.10 10MHz to LNB ................... 6-27 6.2.4.11 Mute LNB Services in Standby ............6-27 6.2.5 Edit->Unit Screen ..................
  • Page 5 Q-Flex Satellite Modem Installation and Operating Handbook 6.2.2.14 Weighted QoS ................... 6-55 6.2.2.15 IPv4/IPv6 Mode ................. 6-56 6.2.2.16 M&C and IP Traffic Ethernet Speed/Duplex ........6-56 6.2.2.17 Ethernet MTU ..................6-58 6.2.3 Edit->IP->Advanced Screen................6-58 6.2.3.1 Terrestrial Buffer Size ................6-59 6.2.3.2...
  • Page 6 Q-Flex Satellite Modem Installation and Operating Handbook 6.2.11 Test Screen ....................6-90 6.2.12 BER Test ....................6-91 Front-panel Interface ..................6-93 6.3.1 Keypad Operation ..................6-93 6.3.1.1 Cursor ....................6-93 6.3.1.2 Navigation Keys ..................6-93 6.3.1.3 Alphanumeric Keys ................6-94 6.3.1.4...
  • Page 7 Q-Flex Satellite Modem Installation and Operating Handbook 7.8.2.1 Gateways ....................7-20 7.8.3 Throughput Performance ................7-20 7.8.4 Jumbo Ethernet Frame Support ..............7-20 7.8.5 IP Over ESC ....................7-20 7.8.6 IP Interoperability ..................7-22 7.8.7 IP Connectivity Modes .................. 7-22 7.8.8 TCP Acceleration ..................
  • Page 8 Q-Flex Satellite Modem Installation and Operating Handbook 12.15 Internet Traffic .................... 12-13 12.16 BUC / LNB facilities ..................12-13 12.17 Performance Graphs .................. 12-14 Chapter 13 Advanced Framing ................13-1 13.1 Edit->Tx-Rx->Framing Screen ................13-1 13.2 Edit->Tx-Rx>Framing->Overhead Closed Screen ..........13-2 13.3...

  • Page 9: Chapter 1 Welcome

    The Q-Flex™ modem provides a flexible hardware platform with support for IF (70/140MHz) and L-band operation in one unit. Its powerful processor is ideal for handling IP traffic. However, the Q-Flex™ modem can be fitted with virtually any type of terrestrial interface and will operate at data rates up to 160Mbps.
  • Page 10 Paradise’s SmartLink™ technology allows non-packetized continuous traffic, such as G.703 E1 traffic, to be used with DVB-S2. The Q-Flex™ therefore provides a painless migration path to newer, more efficient communications technology while fully supporting legacy services.

  • Page 11: 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 12: Chapter 3 Safety And Compliance Information

    Q-Flex 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 13: Environmental Compliance

    Q-Flex 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 2011/65/EU. • The Waste Electrical and Electronic Equipment (WEEE) Directive 2012/19/EU.

  • Page 14: Electromagnetic Compatibility (Emc) Compliance

    Q-Flex 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 15: Chapter 4 Installation

    Carefully unpack all items, taking care not to discard any packing materials. Should the unit need to be returned to Teledyne Paradise Datacom then you should use the original packing carton as it is designed to provide the necessary level of protection during shipment.

  • Page 16: Getting Started

    This procedure is explained in Section 7.4.3. Getting started is covered in more detail in the Q-Flex™ modem Quick Start Guide (provided with the unit).

  • Page 17: Chapter 5 Introduction

    Q-Flex Satellite Modem Installation and Operating Handbook Chapter 5 Introduction 5.1 Overview The Q-Flex™ satellite modem is designed for both open and closed network operation in fixed and mobile environments, providing a data link between geographically distant sites via satellite. Features include: DVB-S2 (EN 302 307-1) and DVB-S2X (EN 302 307-2) operation including •...

  • Page 18: Standard-Fit Hardware

    Q-Flex Satellite Modem Installation and Operating Handbook addresses and static routes can also be entered and displayed in IPv6 format. 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.

  • Page 19: Hardware Options

    Q-Flex Satellite Modem Installation and Operating Handbook A 4-port Gigabit Ethernet switch option is available. This extends the base modem Ethernet traffic port with another 3 Ethernet ports, creating a 4-port switch. Ethernet speed, duplex and cable termination (crossover versus straight-through) are auto-negotiated.

  • Page 20: Idr Option Card

    Q-Flex Satellite Modem Installation and Operating Handbook 5.3.1.5 IDR Option Card The Intermediate Data Rate (IDR) option card (part number P3721) provides an IESS 308-compliant IDR capability including two 32kbps ADPCM ESC audio channels, multiple backward alarms support and independent ESC and Auxiliary ports that replace the shared ESC/Aux port on the base unit.

  • Page 21: Other Option Cards

    Q-Flex Satellite Modem Installation and Operating Handbook E1 with two separate EIA-530 interfaces. • IP at up to 30Mbps with EIA-530. • IP with G.703 at E3 rate. • 5.3.2 Other Option Cards The following feature-specific option cards are available: P3604 DVB-S2 option card, required for DVB-S2 and SmartLink™...
  • Page 22 Q-Flex Satellite Modem Installation and Operating Handbook Feature Description Code Transmit Enables the Tx service. Receive Enables the Rx service. Terrestrial data rate Enables data rates in the given range. 0 to 2048kbps Terrestrial data rate Enables data rates in the given range.
  • Page 23 Q-Flex Satellite Modem Installation and Operating Handbook Feature Description Code XStream IP™ IP-over-DVB encapsulation. Supports • DVB-S2 transmission of IP packets with/without Ethernet frames over DVB-S2/DVB-S2X using Multiprotocol Encapsulation (MPE) (EN 301 192), Unidirectional Lightweight Encapsulation (ULE) (RFC 4326) and Paradise XStream Encapsulation (PXE).
  • Page 24 Q-Flex Satellite Modem Installation and Operating Handbook Feature Description Code Paired Carrier™ PCMD Enables Paired Carrier™ data rates in the given range. 2.5Mbps to 5Mbps Paired Carrier™ PCME Enables Paired Carrier™ data rates in the given range. 5Mbps to 10Mbps Paired Carrier™...

  • Page 25: Front Panel

    Q-Flex Satellite Modem Installation and Operating Handbook 5.5 Front Panel Figure 5-1 Modem Front Panel The front panel, shown in Figure 5-1, comprises: Light Emitting Diodes (LEDs) that provide basic modem status. • A Liquid Crystal Display (LCD) that acts as the local user interface.

  • Page 26: Keypad

    Q-Flex Satellite Modem Installation and Operating Handbook 5.5.2.1 Keypad The keypad (see Figure 5-3) is incorporated into a sealed tactile membrane and allows full alphanumeric entry and navigation using arrow keys. Figure 5-3 Front-panel Keypad 5.6 Rear Panel The rear panel, shown in Figure 6-4, provides a full set of terrestrial and satellite data interfaces.
  • Page 27 Q-Flex Satellite Modem Installation and Operating Handbook There is an M4 stud for connecting a safety earth conductor directly to the chassis of the unit. Tx IF Output • This is a 50 /75 BNC female connector. The output power level can be varied from 0dBm to -25dBm.
  • Page 28 Q-Flex Satellite Modem Installation and Operating Handbook On-line LED • This LED mirrors the front-panel Tx Carrier LED allowing the operator, from the rear of the modem, to ascertain the carrier status and to identify which modem in a 1:1 redundant pair is offline.
  • Page 29 This is a 9-pin D-type female connector. The modem supports the Paradise Universal Protocol (PUP) as specified in the document ‘Remote M&C Specification for Q-Flex™ Satellite Modem’. RS232 (for direct-to-PC applications) and RS485 (for multidrop applications) are supported. The Remote M&C interface can be connected to the remote modem’s Async ESC interface, allowing remote modem...
  • Page 30 Q-Flex Satellite Modem Installation and Operating Handbook termination (crossover versus straight-through) are auto-negotiated. Line speed and duplex can also be set to fixed values. The two Ethernet ports can be bridged together under software control. M&C control can be via the Simple Network Management Protocol (SNMP), an...

  • Page 31: Chapter 6 User Interfaces

    Q-Flex Satellite Modem Installation and Operating Handbook Chapter 6 User Interfaces 6.1 User Control The modem has both front-panel and web browser user interfaces. 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 32: Web User Interface

    Q-Flex 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 33: Status Screen

    Q-Flex 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 34 Q-Flex Satellite Modem Installation and Operating Handbook Figure 6-3 Status Screen The line of buttons across the top of the display (i.e. 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 35: Status Setup

    Q-Flex 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 36: Status Demodulator

    Q-Flex 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 37: Status Paired Carrier

    Q-Flex Satellite Modem Installation and Operating Handbook Receive Doppler buffer usage. This indicates how full the receive Doppler buffer • is. This is displayed only when a receive Doppler buffer is being used to compensate for movements in the satellite (i.e. when the Rx clock source is set to something other than Satellite).

  • Page 38: Status Aupc

    Q-Flex Satellite Modem Installation and Operating Handbook Receive data rate. This is the instantaneous receive data rate, which varies with • modcod. Receive modcod. This is the current receive modulation and FEC rate, which the • remote modem varies in accordance with the Es/No being received by the local modem.

  • Page 39: Edit->Tx-Rx->Service Screen

    Q-Flex Satellite Modem Installation and Operating Handbook Unit. These menus contain all of the general modem configuration settings • including the terrestrial interface, monitor and control, alarms, station clock and Software Activated Features (SAF) settings. They also include a software upgrade factility.

  • Page 40: Terrestrial Interface

    Q-Flex Satellite Modem Installation and Operating Handbook 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: Rx Values Track Tx

    Q-Flex Satellite Modem Installation and Operating Handbook 6.2.4.2 Rx Values Track Tx This is an On/Off control that allows the receive path to be automatically configured to be the same as the transmit path, thereby simplifying set up. There are a number of exceptions including carrier frequency, spectral inversion, timeslots and clock settings.

  • Page 42: Tx/Rx Rate Control

    Q-Flex Satellite Modem Installation and Operating Handbook additional services such as an ESC channel be required then the appropriate service, such as Closed network plus ESC, should be selected together with SmartLink as the FEC type. DVB-S2 configuration options such as FEC frame size and pilots are available under Edit->Tx-Rx->Advanced.

  • Page 43: Tx/Rx Symbol Rate

    Q-Flex Satellite Modem Installation and Operating Handbook When a baseband mode other than Continuous is used then the terrestrial data rate will be automatically fixed in accordance with the services that are being used (such as the number of timeslots used for a G.703 service).

  • Page 44: Tx Clock Source

    Q-Flex Satellite Modem Installation and Operating Handbook 6.2.4.7 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-Flex 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 6-7 Rx Clock Source 6.2.4.9 Tx/Rx FEC Type FastLink This enables Paradise’s FastLink low-latency Low-Density Parity-...
  • Page 46 Q-Flex Satellite Modem Installation and Operating Handbook FastLink BPSK: 0.499 QPSK (and OQPSK): 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 Frequency Band

    Q-Flex Satellite Modem Installation and Operating Handbook BPSK: 5/16, 21/44, 3/4, 7/8 QPSK (and OQPSK): 5/16, 21/44, 3/4, 7/8, 0.93 8PSK: 3/4, 7/8, 0.93 16QAM: 3/4, 7/8, 0.93 Viterbi BPSK: 1/2, 3/4, 7/8 QPSK (and OQPSK): 1/2, 3/4, 7/8 8PSK: 2/3...

  • Page 48: Tx/Rx Spectral Roll-Off

    Q-Flex Satellite Modem Installation and Operating Handbook If the BUC LO frequency has been set on the Edit->Tx-Rx->BUC/LNB menu then the L-band transmit frequency will no longer be available and will be automatically controlled by the modem to achieve the requested BUC transmit frequency.

  • Page 49: Tx/Rx Spectral Inversion

    Q-Flex Satellite Modem Installation and Operating Handbook 6.2.4.15 Tx/Rx Spectral Inversion Spectral inversion is an On/Off control that controls whether the carrier I and Q components are swapped or not, allowing the modem to compensate for any other equipment in the transmit or receive chain that has introduced a spectral inversion.

  • Page 50: Modem/Buc Carrier

    Q-Flex Satellite Modem Installation and Operating Handbook 6.2.4.17 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 51: Dvb-S2 Tx/Rx Frame Size

    Q-Flex 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 52: Reed-Solomon Fec Options

    Q-Flex 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 53: Aupc Mode

    Q-Flex Satellite Modem Installation and Operating Handbook attempting to maintain the remote Eb/No at a specified target level by varying the local modem transmit power level. 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 54: Maximum Negative Aupc Power Offset

    Q-Flex Satellite Modem Installation and Operating Handbook 6.2.3.4 Maximum Negative AUPC Power Offset Range: 0dBm to 25.0dBm; step size: 0.1dBm Description: This is the maximum decrease in Tx power level that AUPC is allowed to make in order to maintain remote Eb/No.

  • Page 55: Edit->Tx-Rx->Buc/Lnb Screen

    Q-Flex Satellite Modem Installation and Operating Handbook the local demodulator has unlocked, also resulting in no Es/No information being available from the distant modem. In this situation, because there is no carrier being received from the distant modem, you may, for example, want to set the AUPC uplink level from the local modem to its nominal level since there is no indication in this scenario of a problem with the distant modem receiving the local modem’s carrier.

  • Page 56: Buc Lo Frequency

    Q-Flex Satellite Modem Installation and Operating Handbook 6.2.4.2 BUC LO Frequency Range: -99.999GHz to 99.999GHz; step size: 0.0000001GHz Description: This is the local oscillator frequency of the BUC. Table 6-29 BUC LO Frequency 6.2.4.3 BUC Attenuation Range: 0dB to -15.0dB; step size: 1dB Description: This varies the front-end attenuation applied by the the BUC.

  • Page 57: Lnb Type

    Q-Flex Satellite Modem Installation and Operating Handbook 6.2.4.7 LNB Type None This indicates that no LNB is fitted. Other This indicates that an LNB is fitted but is not one of the Paradise LNBs listed below. C 3.635 – 4.200 GHz This presets the LNB LO frequency to 5150MHz.

  • Page 58: Edit->Unit->M&C Screen

    Q-Flex Satellite Modem Installation and Operating Handbook M&C. This controls remote M&C settings including serial control settings and user • passwords. Alarms. This controls alarm thresholds and actions. • Station Clock. This controls the station clock, which replaces the internal 10MHz •...

  • Page 59: Modem Control And Passwords

    Q-Flex Satellite Modem Installation and Operating Handbook 6.2.6.1 Modem Control and Passwords Table 6-33 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 60: Radius Authentication Validity

    This involves the addition of a vendor-specific attribute using an SMI network management private enterprise code of 64534 (to denote Teledyne Paradise Datacom), which is one of a range reserved for private use. A vendor-specific attribute named ‘Access-Level’...

  • Page 61: Radius Server Timeout

    Q-Flex Satellite Modem Installation and Operating Handbook 6.2.6.5 RADIUS Server Timeout Range: 1 to 60 seconds; step size: 1 second Description: Controls the timeout when connecting to the RADIUS server. Two attempts will be made before reverting to use the fallback RADIUS server.
  • Page 62 Q-Flex Satellite Modem Installation and Operating Handbook IP – Forward This option is only available when the ESC interface type is set to IP. to Remote Commands sent to the local modem’s IP address are forwarded to the remote modem where the commands are converted to serial M&C commands for control of remote equipment.

  • Page 63: Modem Identity

    Q-Flex Satellite Modem Installation and Operating Handbook Table 6-33 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 64: Edit->Unit->M&C->Email Screen

    Q-Flex 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 65 Q-Flex 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 66 Q-Flex 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 67: Edit->Unit->M&C->Https Screen

    Q-Flex 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 68: Edit->Unit->Alarms Screen

    Q-Flex 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 patented technology (US patent 8351495) for detecting in- band interference underneath satellite carriers while remaining on traffic.

  • Page 69: Local/Remote Eb/No Alarm Threshold

    Q-Flex Satellite Modem Installation and Operating Handbook AIS can be ignored or set to raise an alarm, regenerate AIS and send a backward alarm where possible as described in Table 6-42. 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.

  • Page 70: Lnb Dc Current Alarm

    Q-Flex Satellite Modem Installation and Operating Handbook Range: 0.1A to 6.0A; step size: 0.01A Description: Sets the trip threshold at which a fault is declared when the current drawn by the Tx ODU is outside the limit. Both a minimum and a maximum current threshold can be set.

  • Page 71: Station Clock Source

    Q-Flex Satellite Modem Installation and Operating Handbook In addition, the modem’s internal high-stability oscillator can be slaved to the station clock thereby ensuring its use in carrier and BUC/LNB control. Note that even when being used in the IF frequency bands, the high-stability oscillator (normally regarded as an L- band feature) can still be slaved to the station clock.

  • Page 72: Locking The High-Stability Oscillator To The Station Clock

    Q-Flex Satellite Modem Installation and Operating Handbook 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 73: Edit->Unit->Upgrade Screen

    Q-Flex Satellite Modem Installation and Operating Handbook The New SAF code edit box is used to enter a code provided by Paradise that unlocks additional modem features. When unlocked, the features immediately become available. The act of unlocking SAF features will not itself interfere with any services being provided by the modem.

  • Page 74: Edit->Unit->Miscellaneous->Time Screen

    Q-Flex Satellite Modem Installation and Operating Handbook boots the modem from a backup copy of the software stored when the modem was manufactured. Once the modem has been recovered then the standard upgrade process can be repeated. 6.2.14 Edit->Unit->Miscellaneous->Time Screen The Edit->Unit->Miscellaneous->Time screen is shown in Figure 6-19.

  • Page 75: Edit->Unit->Carrier Id Screen

    Q-Flex Satellite Modem Installation and Operating Handbook Figure 6-20 Edit->Unit->Miscellaneous->Reset Screen 6.2.1 Edit->Unit->Carrier ID Screen The Edit->Unit->Carrier ID screen is shown in Figure 6-21. This allows a low-power spread spectrum signal containing user identification information to be superimposed on the Tx carrier. When used with a suitable decoder, the information can be used to identify the source of satellite carriers that are interfering with other satellite services.

  • Page 76: Carrier Id Global Unique Identifier

    Q-Flex Satellite Modem Installation and Operating Handbook 6.2.1.1 Carrier ID Global Unique Identifier The Carrier ID Global unique identifier is a unique ID for the modem. Its value is fixed during the manufacturing process and cannot be changed. The unique identifier is transmitted as part of the Carrier ID information allows the modem manufacturer and the specific modem to be traced.

  • Page 77: Ip Mode

    Q-Flex Satellite Modem Installation and Operating Handbook Figure 6-22 Edit->IP Screen 6.2.2.1 IP Mode Table 6-50 shows the IP mode options. The operation of the M&C and IP Traffic Ethernet ports is summarized in Table 6-51. 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 78: Modem Settings

    Q-Flex Satellite Modem Installation and Operating Handbook Modem Settings Ethernet Operation Bridging/Routing M&C and IP Operation of Operation of Mode Traffic Acceleration M&C IP Traffic Ethernet Ethernet Ethernet Ports Port Port Bridging Bridged M&C address IP Traffic address shared with IP not used;...

  • Page 79: Bridge M&C

    Q-Flex Satellite Modem Installation and Operating Handbook 6.2.2.2 Bridge M&C This is an On/Off control that determines whether the two RJ45 Ethernet ports on the modem are bridged together or whether they have separate IP addresses allocated to them. When the Remote M&C Ethernet port is out of the bridge then satellite IP traffic and M&C traffic are processed separately and therefore the two modem Ethernet connectors are no longer interchangeable.

  • Page 80: Round-Trip Satellite Delay

    Q-Flex Satellite Modem Installation and Operating Handbook 6.2.2.4 Round-trip Satellite Delay Range: 0ms to 9999ms; step size: 1ms Description: This sets a satellite round-trip delay that is used in conjunction with TCP acceleration. It controls the size of the modem’s internal packet buffer to match the bandwidth-delay product for the link (i.e.
  • Page 81 Q-Flex Satellite Modem Installation and Operating Handbook When using DVB-S2, this switches ACM off in both transmit and receive. This switches ACM on in both transmit and receive. When ACM is on, the choice of modulation and FEC rate (modcod) in the transmit path is dynamically matched to the reported Es/No from the remote modem.

  • Page 82: Acm Rain Fade Margin

    Q-Flex 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 83: Traffic/Satelite Ip Addresses And Subnet Masks

    Q-Flex 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 84: Ip Encapsulation Type

    Q-Flex 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 85: Mpe Mac Address

    Q-Flex 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 86: Ipv4/Ipv6 Mode

    Q-Flex Satellite Modem Installation and Operating Handbook For fair-weighting queuing, for every four packets sent from the high-priority queue, two are sent from medium-priority queue and one from the low-priority queue. 6.2.2.15 IPv4/IPv6 Mode IPv4 only This enables the entry and display of IP addresses in IPv4 format only.
  • Page 87 Q-Flex 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 88: Ethernet Mtu

    Q-Flex Satellite Modem Installation and Operating Handbook 6.2.2.17 Ethernet MTU Range: 2,000 bytes to 10,000 bytes; step size: 1 byte Description: This controls the Ethernet Maximum Transmission Unit (MTU) size, which defines the largest Ethernet frame that can be handled by the modem in bridging mode without fragmentation into smaller frames.

  • Page 89: Terrestrial Buffer Size

    Q-Flex Satellite Modem Installation and Operating Handbook Figure 6-23 Edit->IP->Advanced Screen 6.2.3.1 Terrestrial Buffer Size The terrestrial buffer is used to buffer IP packets coming into the IP terrestrial ports for transmission over satellite. Satellite delay and the quality of the service in general can be controlled by the size of this buffer in conjunction with setting the size of the satellite buffer.

  • Page 90: Satellite Buffer Size

    Q-Flex Satellite Modem Installation and Operating Handbook packet loss and/or delays more than others). When the buffer is full then received packets will be dropped until space in the buffer is freed up. It is generally desirable for the terrestrial buffer to be set so that packets are not dropped unnecessarily before they have been assessed by the traffic shaper as to priority, etc.

  • Page 91: Point-To-Multipoint Mode

    Q-Flex Satellite Modem Installation and Operating Handbook 6.2.3.4 Point-to-multipoint Mode The modem can be used in a point-to-multipoint mode where the hub modem sends a shared outbound to several remotes. The inbounds from the remotes are processed by individual demodulators.

  • Page 92: Null Packet Insertion

    Q-Flex Satellite Modem Installation and Operating Handbook When VLAN filtering is disabled, VLAN tags are not generated or removed by the modem. This means that no filtering of traffic based on VLAN ID takes place. Since each remote modem receives the same broadcast traffic, a device such as a router must be present to filter out any traffic that is intended only for the other remote modems.

  • Page 93: Mpeg Over Ip Type

    Q-Flex Satellite Modem Installation and Operating Handbook timestamps as required, potential jitter in the play out of the packets at the receiver/decoder can be eliminated. 6.2.3.8 MPEG Over IP Type UDP/TS This indicates that the MPEG2 transport stream packets are encapsulated into into IP packets using the UDP protocol.

  • Page 94: Stream Tx/Rx Terrestrial Interface

    Q-Flex Satellite Modem Installation and Operating Handbook Local port The local port number is used in conjunction with the local multicast address above in order to fully define the address and port number the modem should listen on for incoming multicast packets.

  • Page 95: Stream Tx Fec Code Rate

    Q-Flex Satellite Modem Installation and Operating Handbook QPSK: 1/4, 1/3, 2/5, 1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 8/9, 9/10 DVB-S2 8PSK: 3/5, 2/3, 3/4, 5/6, 8/9, 9/10 16APSK: 2/3, 3/4, 4/5, 5/6, 8/9, 9/10 32APSK: 3/4, 4/5, 5/6, 8/9, 9/10 Table 6-71 Tx Modulation and FEC Code Rates 6.2.3.15 Stream Tx FEC Code Rate...

  • Page 96: Edit->Ip->Static Routes Screen

    Q-Flex Satellite Modem Installation and Operating Handbook 6.2.5 Edit->IP->Static Routes Screen The Edit->IP->Static Routes screen, shown in Figure 6-24, allows up to 16 static routes to be added. Figure 6-24 Edit->IP->Static Routes Screen Each route consists of a destination IP address, subnet mask and a gateway address.

  • Page 97: Edit->Ip->Header Compression Routes Screen

    Q-Flex Satellite Modem Installation and Operating Handbook The Show Routes button can be used to display the underlying operating system ‘route add’ commands applied to the TCP/IP stack, thereby providing confirmation of the active static routes. 6.2.6 Edit->IP->Header Compression Routes Screen The Edit->IP->Header Compression Routes screen, shown in Figure 6-25, allows up to...

  • Page 98: Edit->Paired Carrier Screen

    Q-Flex Satellite Modem Installation and Operating Handbook Each route consists of a destination IP address and subnet mask. The Add and Del buttons enable and disable each route, respectively. Note that routes can be applied even when in bridging mode.
  • Page 99 Q-Flex Satellite Modem Installation and Operating Handbook Table 6-73 indicates the circumstances under which modem signal inversions are required in relation to Paired Carrier™ operation. Paired Tx Modem Rx Modem Carrier Inversion Inversion Working? Non Inverting Non Inverting Non Inverting...
  • Page 100 Q-Flex Satellite Modem Installation and Operating Handbook Check the receive signal level, Eb/No, spectrum and • constellation are as expected. Check the received signal is data transparent. • 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 101: Round-Trip Delay

    Q-Flex Satellite Modem Installation and Operating Handbook Narrow the difference between the minimum and maximum • round trip delay times (if these are being used) to minimise the 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.

  • Page 102: Satellite Longitude

    Q-Flex Satellite Modem Installation and Operating Handbook Carrier™ operation. A GPS source must be attached to the modem via the modem’s remote serial control port, which will be automatically configured for RS232 at 4800 baud. The modem polls the serial port regularly for GPS position information.

  • Page 103: Calculated Satellite Delay

    Q-Flex Satellite Modem Installation and Operating Handbook 6.2.7.6 Calculated Satellite Delay When the method for establishing the round-trip delay is set to Set location then the satellite delay calculated by the modem will be displayed. This can be used to reduce the acquisition time by setting minimum and maximum delay values based around the calculated value.

  • Page 104: Edit->Memories->Recall Screen

    Q-Flex Satellite Modem Installation and Operating Handbook Recall. This allows a previously stored configuration to be selected and used in place of • the current configuration. Erase. This allows configuration memories to be deleted. • Download. This is used to download one or more configuration memories from the •...

  • Page 105: Edit->Memories->Recall->Advanced Reversionary Control Screen

    Q-Flex Satellite Modem Installation and Operating Handbook Figure 6-28 Edit->Memories->Recall Screen 6.2.8.2 Edit->Memories->Recall->Advanced Reversionary Control Screen The Edit->Memories->Recall->Advanced screen (shown in Figure 6-29) supports a method for recovering a remote modem from a failure during a change to the modem’s configuration.

  • Page 106: Edit->Memories->Store Screen

    Q-Flex Satellite Modem Installation and Operating Handbook recalled should a manual reconfiguration of the remote modem result in a loss of communications with the modem. Ensure that this configuration memory is stored on the remote modem. 2. Immediately prior to making any manual change to the remote modem, navigate to its Edit->Memories->Recall->Advanced screen and select the radio button...

  • Page 107: Edit->Memories->Download Screen

    Q-Flex Satellite Modem Installation and Operating Handbook Figure 6-31 Edit->Memories->Store Screen 6.2.8.4 Edit->Memories->Download Screen The Edit->Memories->Download screen (shown in Figure 6-32) displays all of the configuration memories that are stored on the modem and can be used to download one or all of the configurations from the modem to the user’s browser device (such as a PC).

  • Page 108: Edit->Redundancy Screen

    Q-Flex Satellite Modem Installation and Operating Handbook Figure 6-33 Edit->Memories->Upload Screen 6.2.9 Edit->Redundancy Screen The Edit->Redundancy->1-for-1 screen (shown in Figure 6-34) controls the operation of the modem when in a 1:1 redundancy configuration. The Edit->Redundancy->1-for-N screen and 1:N redundancy in general is documented separately in ‘Installation and Operating Handbook for Quantum, Evolution and Q Series...

  • Page 109: View Screen

    Q-Flex Satellite Modem Installation and Operating Handbook If both transmit and receive fail switchovers are set to off then the 1:1 redundancy system will only switch over on unit faults and all transmit or receive traffic faults will be ignored.
  • Page 110 Q-Flex Satellite Modem Installation and Operating Handbook Figure 6-35 View Screen Viewing Graphs Graphing requires the Java Runtime Environment (JRE) to be installed on the browser device. This can be downloaded from various web sites including http://www.java.com. The first time that a graph is displayed, the security warning message shown in Figure 6-36 will be displayed.

  • Page 111: Rx Spectrum Monitor

    Q-Flex Satellite Modem Installation and Operating Handbook Figure 6-36 Java Applet Security Warning Screen 6.2.10.1 Rx Spectrum Monitor The Rx Spectrum Monitor shown in Figure 6-37 is a powerful real-time spectrum analyser within the modem that is used to view the received signal spectrum.

  • Page 112: Rx Constellaton Monitor

    Q-Flex 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 113: Ip Graphs

    Q-Flex Satellite Modem Installation and Operating Handbook Figure 6-39 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 114 Q-Flex Satellite Modem Installation and Operating Handbook Figure 6-40 IP Throughput Graph QoS (traffic shaping) graphs are described in Section 7.8.9. An example ACM graph is shown in Figure 6-41. 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 115: Other Time-Based Graphs

    Q-Flex Satellite Modem Installation and Operating Handbook Figure 6-41 ACM Terrestrial Data Rate Graph Figure 6-42 ACM Terrestrial Data Rate Graph (Short time period) 6.2.10.4 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 116: Alarms

    Q-Flex 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 117: System Log

    Q-Flex Satellite Modem Installation and Operating Handbook Figure 6-44 System Alarms Screen 6.2.10.6 System Log The system log can be viewed using the View->Log screen shown in Figure 6-45. 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 118: View->Unit Screen

    Q-Flex Satellite Modem Installation and Operating Handbook Figure 6-46 View->Setup Screen 6.2.10.8 View->Unit Screen The View->Unit screen shown in Figure 6-47 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 119: View->Saf Screen

    Q-Flex Satellite Modem Installation and Operating Handbook Figure 6-47 View->Unit Screen 6.2.10.9 View->SAF Screen The View->SAF screen shown in Figure 6-48 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 120: Test Screen

    Q-Flex Satellite Modem Installation and Operating Handbook Figure 6-48 View->SAF Screen 6.2.11 Test Screen The Test screens (shown in Figure 6-49 and Figure 6-50) supports the following test functions: Loopback. This allows selection of internal loopback between the transmit and receive •...

  • Page 121: Ber Test

    Q-Flex Satellite Modem Installation and Operating Handbook Figure 6-49 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 122 Q-Flex Satellite Modem Installation and Operating Handbook Figure 6-50 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 123: Front-Panel Interface

    Q-Flex Satellite Modem Installation and Operating Handbook 6.3 Front-panel Interface 6.3.1 Keypad Operation 6.3.1.1 Cursor An inverse-video cursor is used to navigate around the LCD display. 6.3.1.2 Navigation Keys The menu options are arranged into a hierarchy of menus. Navigation is performed using the arrow and ENTER keys or by entry of the number associated with each menu option.

  • Page 124: Alphanumeric Keys

    Q-Flex 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 125: Lcd Screen Layout

    Q-Flex 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 126: Front Panel Menu Structure

    Q-Flex 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 127: Status Menu

    Q-Flex Satellite Modem Installation and Operating Handbook 6.4.2 Status Menu Figure 6-51 Front-panel Status Menus 6-97...

  • Page 128: Edit Menu

    Q-Flex Satellite Modem Installation and Operating Handbook 6.4.3 Edit Menu Figure 6-52 Front-panel Edit Menus 6-98...

  • Page 129: Edit->Tx Menu

    Q-Flex Satellite Modem Installation and Operating Handbook 6.4.3.1 Edit->Tx Menu Figure 6-53 Front-panel Edit->Tx Menus 6-99...

  • Page 130: Edit->Rx Menu

    Q-Flex Satellite Modem Installation and Operating Handbook 6.4.3.2 Edit->Rx Menu Figure 6-54 Front-panel Edit->Rx Menus 6-100...

  • Page 131: Edit->Unit Menu

    Q-Flex Satellite Modem Installation and Operating Handbook 6.4.3.3 Edit->Unit Menu Figure 6-55 Front-panel Edit->Unit Menus 6-101...

  • Page 132: View Menu

    Q-Flex Satellite Modem Installation and Operating Handbook 6.4.4 View Menu Figure 6-56 Front-panel View Menus 6.4.5 Test Menu Figure 6-57 Front-panel Test Menus 6-102...

  • Page 133: Chapter 7 Modem Concepts

    Q-Flex 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 134: Transmit Clocking

    Q-Flex 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 135: Receive Reference

    Q-Flex 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 136: Receive Clocking

    Q-Flex 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 137: Station Clock

    Q-Flex 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 138: Internal Clock

    Q-Flex 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 139: No Clock Loop

    Q-Flex 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 140: Clock Extension

    Q-Flex 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 141: Configuring Aupc

    Q-Flex 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 142: 1:1 Redundancy Operation

    Q-Flex 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 143: Setup Procedure

    Q-Flex 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 144: 1:N Ip Operation

    Q-Flex 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 145: 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 146: Linkguard™ Interference Detection And Carrier Relocation

    Q-Flex Satellite Modem Installation and Operating Handbook 7.6 LinkGuard™ Interference Detection and Carrier Relocation LinkGuard™ is a Paradise patented 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 147: Fastlink Low-Latency Ldpc

    Q-Flex Satellite Modem Installation and Operating Handbook LinkGuard™ provides a menu option for setting a power spectral density threshold, above which the modem will automatically alarm to indicate that a significant source of interference has been detected. The LinkGuard™ Rx traffic warning alarm is displayed locally on the modem and can be accessed remotely via the modem’s web server, SNMP...
  • Page 148 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 149 Q-Flex 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 150 Q-Flex 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 151: Ip Functionality

    Q-Flex 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. (A 4-port Gigabit Ethernet switch is available as an option.)

  • Page 152: Ip Addressing

    Q-Flex 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 153 Q-Flex Satellite Modem Installation and Operating Handbook The ESC is implemented as an internal serial interface run at baud rates up to a maximum of 115kbps. The ‘ESC interface type’ needs to be set to ‘IP’ to put the ESC into IP mode.

  • Page 154: Ip Interoperability

    Q-Flex 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 155: Traffic Shaping

    Q-Flex 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 156: Priority

    Q-Flex 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 157 Q-Flex Satellite Modem Installation and Operating Handbook 7.8.9.4.1 IP Address It is possible to classify a data stream based on either the source and/or the destination address in the IP packet as well as the port number of the TCP or UDP header in the packet.
  • Page 158 Q-Flex Satellite Modem Installation and Operating Handbook Figure 7-11 Traffic Shaping Configuration Screen using IP Addresses As can be seen, QoS Class 0 is guaranteed a bandwidth of 500,000bps. It may be allocated up to 900,000bps, depending on what is allocated to other QoS classes. If no other data is being received then Class 0 will be allocated up to 900,000bps, if needed.
  • Page 159 Q-Flex Satellite Modem Installation and Operating Handbook 7.8.9.4.2 Diffserv DSCP Class It is possible to classify data streams based on the Differentiated Services Code Point (DSCP) value in the IP packet header. The DSCP class bits are the top three bits of the DS field in an IP header (the other three bits of the field indicate drop precedence, which can be mimicked using the Priority setting for the stream in the modem).
  • Page 160 Q-Flex Satellite Modem Installation and Operating Handbook (3-bit field) to prioritise packets. The modem uses the tags to decide which packet to transmit over satellite first when it has more than one packet to send. Two modes are supported, namely Strict Priority Queuing and Fair Weighting Queuing: •...

  • Page 161: Traffic Shaping Graphs

    Q-Flex 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 162: Static And Dynamic Routing

    Q-Flex 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 163: Header Compression

    Q-Flex Satellite Modem Installation and Operating Handbook 7.8.11 Header Compression The modem supports RObust Header Compression (ROHC) of: • IP + UDP headers • IP + UDP + RTP headers • IP + TCP headers • All Ethernet headers The 40 bytes of IP, UDP and RTP headers are typically compressed to between one to three bytes.

  • Page 164: Adaptive Coding And Modulation (Acm)

    Q-Flex Satellite Modem Installation and Operating Handbook 7.8.13 Adaptive Coding and Modulation (ACM) Adaptive Coding and Modulation (ACM) uses feedback from the receiver to the transmitter to respond to changes in channel conditions to optimise throughput, by providing only the level of error protection that is required.
  • Page 165 Q-Flex Satellite Modem Installation and Operating Handbook Note that with DVB-S2 ACM, pilots are automatically switched on at operating points where their use achieves the maximum throughput for a particular Es/No. For example, for an available Es/No of 6.5dB, it is better to use short-block 8PSK 3/5 with pilots on (spectral efficiency 1.69bits/s/Hz) than to use the most suitable short-block modcod with...

  • Page 166: Dvb-S2 And Smartlink

    IP markets. Teledyne Paradise Datacom is proud to bring this technology to a much wider market in the form of the cost-competitive Q-Flex™...
  • Page 167 Q-Flex 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 168 Q-Flex 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 169: Paired Carrier

    Q-Flex 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. Paired Carrier™ is now mature fourth-generation giving performance second to none.
  • Page 170 Q-Flex Satellite Modem Installation and Operating Handbook Figure 7-16 Q-Flex™ 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 171 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-Flex™ modem. Some frequently asked questions about Paired Carrier™ operation along with answers are provided below.
  • Page 172 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-Flex™ modems can be field upgraded to support Paired Carrier™ operation to the desired cancellation bandwidth.

  • Page 173: 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-Flex™ Satellite Modem’) is used to encapsulate PUP commands and responses, which are incorporated into the message payload.
  • Page 174 Q-Flex 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 175: Chapter 9 Data Interfaces

    Q-Flex 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 176 Q-Flex 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 177 Q-Flex 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 178 Q-Flex 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 179 Q-Flex 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 180 Q-Flex 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 181 Q-Flex 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 182 Q-Flex 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 183 Q-Flex 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 184 Q-Flex 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 185 Q-Flex 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 186 Q-Flex 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 187: Chapter 10 Connector Pinouts

    Chapter 10 Connector Pinouts Remote M&C (RS485/RS232) Connector The selection of RS232 or RS485 must be made via the front panel. The communications protocol is defined in the document ‘Remote M&C Specification for Q-Flex™ Satellite Modem’. Connector type: 9-pin `D' female.
  • Page 188 The cable must be of the shielded variety and should be kept as short as practical. A standard 1:1 lead (part number P1391) is available from Teledyne Paradise Datacom. The lead is 10cm long and is designed for use when two modems are mounted vertically adjacent to each other in the rack.
  • Page 189 Q-Flex Satellite Modem Installation and Operating Handbook Alarms and AGC Connector Connector type: 15-pin `D' male ALARMS CONNECTOR 2, 12 Fault Relay - Common Prompt Unit fault - N/O Prompt Unit fault - N/C Prompt Rx Traffic fault (prompt) - N/O...
  • Page 190 Q-Flex Satellite Modem Installation and Operating Handbook Async ESC Connector This connector comprises: An RS232/RS422/RS485 async port for use on either the ESC or Aux channels. • An RS232 serial port (currently unused). • An RS422 Station Clock input. •...
  • Page 191 Standard Lead A constellation monitor/serial lead (part number M1479) is available from Teledyne Paradise Datacom. This lead provides the required connections to a 25-pin D-type for a PC connection (note that this is currently unused by the modem) and three BNCs for connecting to an oscilloscope for the constellation monitor.
  • Page 192 Q-Flex Satellite Modem Installation and Operating Handbook ESC/Aux and Backward Alarms Connector This connector is fitted as part of the IDR option. Note that when this option is fitted, the ESC and Aux ports on this connector replace the shared ESC/Aux port on the Async ESC connector.
  • Page 193 Q-Flex Satellite Modem Installation and Operating Handbook Aux Port Pin Number Sync Async RS422 Usage RS232 Usage Tx Aux Clock out A Tx Aux Clock out Tx Aux Clock out B Tx Aux Data in A Tx Aux Data in...
  • Page 194 Q-Flex Satellite Modem Installation and Operating Handbook Audio Ports Description Number Tx Audio Channel 1 in A Tx Audio Channel 1 in B Tx Audio Channel 2 in A Tx Audio Channel 2 in B Rx Audio Channel 1 out A...
  • Page 195 Q-Flex Satellite Modem Installation and Operating Handbook Backward Alarms Description Number BA 1-4 Common BA1 N/O BA1 N/C BA2 N/O BA2 N/C BA3 N/O BA3 N/C BA4 N/O BA4 N/C BA1 Input BA2 Input BA3 Input BA4 Input Rx Summary fault output (link to BA in) Ground N/O indicates normal open in the normal, non-alarm state &...
  • Page 196 Q-Flex Satellite Modem Installation and Operating Handbook In IDR modes these are used for the four standard IDR backward alarms. In IBS modes, BA 1 indicates the normal single IBS backward alarm status (mirrored by the unit deferred alarm). For multidestinational IBS carriers it is possible to operate the modem in IBS mode but use four separate backward alarms as per IDR.

  • Page 197: Chapter 11 Fault Messages

    Q-Flex 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 198: Transmit Faults

    Q-Flex 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 199 Q-Flex 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. Tx fault: Tx terrestrial Consult technical support if this alarm cannot be cleared.

  • Page 200: Transmit Warnings

    Q-Flex 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 201: Receive Faults

    Q-Flex 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 202 Q-Flex 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 203: Receive Warnings

    Q-Flex 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 204 Q-Flex 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 205: Unit Faults

    Q-Flex 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 206: Unit Warnings

    Q-Flex 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 207: Chapter 12 Specification Summary

    Q-Flex Satellite Modem Installation and Operating Handbook Chapter 12 Specification Summary 12.1 Common Main Specifications Parameter Modem BPSK, QPSK, OQPSK, 8PSK, 8QAM, 16APSK, 16QAM, Modulation 32APSK, 64QAM IF Frequency Range 50 to 90MHz and 100 to180MHz L-band Frequency 950 to 2250 MHz...
  • Page 208 Q-Flex Satellite Modem Installation and Operating Handbook Used with IBS and IDR to provide 2 x 32kbps audio ADPCM coded channels within a 64kbps IBS carrier and 2 Audio Channels Option x 32kbps audio ADPCM coded channels plus 64kbps data...

  • Page 209: Tx Modulator Specifications

    Q-Flex Satellite Modem Installation and Operating Handbook 12.2 Tx Modulator Specifications Parameter Modem IF Output Power Level 0 to –25dBm continuously variable in 0.1dB steps L-band Output Power 0 to –40dBm continuously variable in 0.1dB steps Level Output Level Stability ±0.375dB, 0ºC to 50ºC...

  • Page 210: Rx Demodulator Specifications

    Q-Flex Satellite Modem Installation and Operating Handbook 12.3 Rx Demodulator Specifications Parameter Modem Minimum: -115+10 log (symbol rate) IF Input Range Maximum: -80 + 10 log (symbol rate) Minimum: -130 + 10 log (symbol rate) L-band Input Range Maximum: -80 + 10 log (symbol rate)

  • Page 211: Framing And Deframing Specifications

    Q-Flex Satellite Modem Installation and Operating Handbook 120 RS422 compatible input, 1MHz to 10MHz in 1kHz steps via Async ESC connector NB: When set to 10MHZ, the station reference may replace internal reference to all internal circuitry and reference outputs on the IF ports. The unit automatically switches back to internal reference if the station reference fails.

  • Page 212: Intelsat Reed-Solomon Codec And Custom Option Specifications

    Q-Flex Satellite Modem Installation and Operating Handbook 12.6 Intelsat Reed-Solomon Codec and Custom Option Specifications Parameter Modem Concatenated Reed-Solomon outer codec to IESS- Format 308/310 Default n, k, t = (126, 112, 7) depth 4. Automatically switches to: (225, 205, 10) depth 4 for 1544kbps IDR mode or...

  • Page 213: Extended Drop And Insert Option Specifications

    Q-Flex Satellite Modem Installation and Operating Handbook 12.8 Extended Drop and Insert Option Specifications Parameter Modem Selected timeslots may be independently re-ordered Timeslot Re-Ordering on both Tx and Rx paths. All or only a subset of the received data may be...

  • Page 214: Advanced Esc And Advanced Aux Option Specifications

    Q-Flex Satellite Modem Installation and Operating Handbook 12.9 Advanced ESC and Advanced Aux Option Specifications Parameter Modem A single port provides the interface for optional high ESC/Aux Port rate async ESC (IBS/SMS option or Closed Net Plus ESC) or the Intelsat low rate async IBS ESC channel.

  • Page 215: Bert Option Specifications

    Q-Flex Satellite Modem Installation and Operating Handbook RS232, RS422 or RS485 external interfaces or internal link to remote M&C port (software selected). No external cabling required between the ESC and M&C ports for M&C via ESC channel within overhead. Other devices externally wired in parallel with M&C port can also be accessed remotely.

  • Page 216: Aupc Specifications

    Q-Flex Satellite Modem Installation and Operating Handbook 12.12 AUPC Specifications Parameter Modem Monitor of remote Eb/No and BER only, full remote Modes of Operation Eb/No maintenance. Unidirectional or Bi-directional operation. Utilises asynchronous ESC channel on IBS/SMS, IDR Communication Link and Closed Network plus ESC carriers (ESC from 300 baud, i.e., overheads down to less than 1%).
  • Page 217 Q-Flex 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 218: Traffic Log Specifications

    Q-Flex Satellite Modem Installation and Operating Handbook 12.13 Traffic Log Specifications Parameter Modem Capacity Over 6000 entries Fault message with time and date stamp. Entry Format Separate entry when fault clears/changes. 12.14 Common Specifications Parameter Modem Interface Loop (Local and Remote)

  • Page 219: Internet Traffic

    Q-Flex Satellite Modem Installation and Operating Handbook Safety EN60950-1 EN55022 Class B (Emissions) EN55082 Part 1 (Immunity) Environmental Operating Temperature Range 0 to 50ºC AC Mains inrush surge current at power up = 25A @ 250V Modem uses 3.15A slow blow fuses in all cases.

  • Page 220: Performance Graphs

    Q-Flex Satellite Modem Installation and Operating Handbook 12.17 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. 12-14...
  • Page 221 Q-Flex Satellite Modem Installation and Operating Handbook Figure 13-1 Modem Error Probability versus Eb/No for 8PSK/TCM 12-15...
  • Page 222 Q-Flex Satellite Modem Installation and Operating Handbook Figure 13-2 Modem Error Probability versus Eb/No for TPC QPSK 12-16...
  • Page 223 Q-Flex 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 224 Q-Flex Satellite Modem Installation and Operating Handbook Figure 13-4 Modem Error Probability versus Eb/No FOR TPC 16QAM 12-18...
  • Page 225 Q-Flex 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 226: Chapter 13 Advanced Framing

    Q-Flex 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 227: Edit->Tx-Rx>Framing->Overhead Closed Screen

    Q-Flex 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 228 Q-Flex 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 229: Edit->Tx-Rx>Framing->Overhead Ibs Screen

    Q-Flex 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 230: Edit->Tx-Rx>Framing->Overhead Idr Screen

    Q-Flex 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 231 Q-Flex 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 232: Edit->Tx-Rx>Advanced Drop And Insert Screens

    Q-Flex 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 233: Chapter 14 Glossary

    Q-Flex Satellite Modem Installation and Operating Handbook Chapter 14 Glossary Adaptive Coding and Modulation ADPCM Adaptive Differential Pulse Code Modulation Automatic Gain Control Address Resolution Protocol AUPC Automatic Up-link Power Control Bit Error Rate BERT Bit Error Rate Tester Burst Information Rate...

  • Page 234: Chapter 15 Technical Support

    5. Generate the required import paperwork explicitly following the import/export procedures stated when the RMA number was given. 6. Outside of the UK, fax the paperwork to us directly and return the goods to Teledyne Paradise Datacom. Within the UK, fax the paperwork and return the goods to the Teledyne Paradise Datacom UK facility.

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