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DekTec DTE-3114 User Manual

Networked quad qam modulator
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DTE-3114
Networked Quad QAM Modulator
USER MANUAL
Augustus 2013

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  • Page 1 DTE-3114 Networked Quad QAM Modulator USER MANUAL Augustus 2013...

  • Page 2: Table Of Contents

    DTE-3114 – Networked Quad QAM Modulator USER MANUAL Table of Contents 1. Introduction ..........................4 1.1 General description ......................4 1.2 Block diagram ........................4 1.3 Applications ........................5 1.4 Limitations ......................... 5 1.5 List of Abbreviations ......................6 2. Installation ..........................8 2.1 Physical layout ........................
  • Page 3 DekTec Digital Video B.V. reserves the right to change products or specifications without notice. Information furnished in this document is believed to be accurate and reliable, but DekTec assumes no responsibility for any errors that may appear in this material.

  • Page 4: Introduction

    IP jitter, as well as error correction according to SMPTE 2022-1. A significant innovation in the DTE-3114 is support for Power over Ethernet (PoE). When used with a PoE compatible network, the modulator does not require a separate power feed, as it can draw its power from the Ethernet network.

  • Page 5: Applications

    Typical applications of the DTE-3114 include: QAM test-signal generator The DTE-3114 can be used as a standard QAM test-signal generator by using a PC to send a test Transport Stream over IP to the DTE-3114. Typical uses include generating QAM signals in an R&D environment, demonstration of QAM receiving equipment on exhibitions and production testing of QAM-processing equipment.

  • Page 6: List Of Abbreviations

    DTE-3114 – Networked Quad QAM Modulator USER MANUAL Conditional access Not supported. Multiplexing SPTS to MPTS multiplexing is not supported. Only CBR streams are supported. 1.5 List of Abbreviations auto-MDIX Automatic medium-dependent interface crossover. Technique automatically detect the type of network cable: straight-through or crossover.
  • Page 7 DTE-3114 – Networked Quad QAM Modulator USER MANUAL Real-time Transport Protocol TSoIP Transport Stream over IP Unreliable Datagram Protocol Ultra High Frequency band, officially ranging from 300MHz to 3GHz, but in the context of cable television from 300MHz to 1GHz.

  • Page 8: Installation

    F female connector, 75 Ohm impedance. Reset button Button that can be operated with a paper clip. The function is to reboot the DTE-3114, or enter failsafe mode if held pressed for more than three seconds. RJ-45 Gigabit port The Ethernet port is used to supply TS-over-IP input, Web and SNMP management and (optionally) power supply from a Power-over-Ethernet enabled network.

  • Page 9: Lcd Display

    Total output power level in dBm. Frequency Carrier frequency of each channel in MHz. Network address MAC address and IP address (alternating). When a hardware failure is detected the display will blink continuously and the DTE-3114 has to be returned to the manufacturer.

  • Page 10: Hardware Installation

    2.3 Hardware installation Rail-mount system The rail-mount system can be used to mount the DTE-3114 on a DIN rail (TS32, TS35). The rail can be mounted directly on a wall, or the DekTec 19”-rack-mountable rail can be used to install up to 12 DTE modules in 3U-height 19”...

  • Page 11: Thermal Considerations

    When you have access to the web pages of the DTE-3114 web interface, you can – if you want to do so – assign a static IP address and subnet mask via the Network settings tab. The default gateway...
  • Page 12 DTE’s subnet. To access the DTE-3114 from Windows XP it is required that the link-local subnet is present in the routing table. This can be verified by using the command: route print. In the routing table only one link-local route (169.254.x.x) may be present through the network card which is connected to the...
  • Page 13 Default Gateway: 192.168.100.100 =========================================================================== Persistent Routes: None The link-local route is now present and communication with the DTE-3114 is possible. Example 2: Same situation as example 1, but now the "route print" gives the following result: C:\>route print =========================================================================== Interface List 0x1 ......

  • Page 14: Failsafe Mode

     The reset button is kept pressed while the DTE-3114 powers up.  The reset button is kept pressed for at least 3 seconds. In the latter two cases, the DTE-3114 will obtain an IP address through DHCP, even if a static IP address was configured.

  • Page 15: Network Settings

    DTE-3114 – Networked Quad QAM Modulator USER MANUAL 2.7.3 Network Settings IP address obtain through DHCP Display ID <blank> SNMP agent disabled SNMP read community public SNMP write community private SNMP traps disabled SNMP trap destination 0.0.0.0 SNMP trap community...

  • Page 16: Device Configuration And Monitoring

     Through a web-based front end (“web GUI”), see section 3.3;  Using SNMP, see section 3.4 The web GUI is intended for human interaction with the DTE-3114, while SNMP is aimed at automated management and control by a Network Management System.

  • Page 17: Network Settings

     Normal operation. The device is working properly.  Hardware error. A serious and fatal error has occurred in the hardware. The DTE-3114 cannot be used and should be returned to the supplier.  Channel error. One or more of the four QAM- modulator channels is in an error state.

  • Page 18: Smpte Settings

    The desired delay (in ms) between the reception of an IP packet and the data leaving the channel More delay will allow the DTE-3114 to cope with more IP jitter. The IP-to- output delay must be high enough in order to enable FEC decoding.

  • Page 19: Status

    DTE-3114 – Networked Quad QAM Modulator USER MANUAL Variable Description SNMP Symbol rate The symbol rate of the channel Interleaver I Interleaver parameter I Interleaver J Interleaver parameter J RF level The median desired RF output level per channel. For each...

  • Page 20: Snmp Alarms

    DTE- 3114, between the actual arrival time of a UDP/RTP packet and the ideal (jitterless) arrival time of the packet. The DTE-3114 measures the delay factor once every second. Clear counters Clears the Lost-before-FEC, Lost-after-FEC and Lock-error counters in the web interface 3.2.6 SNMP alarms...

  • Page 21: Web Gui - Colour-Coding Scheme

    Input field but setting is disabled 3.3.3 Web GUI – Tabs The DTE-3114 web GUI uses a tabbed interface. Clicking a tab will open a page with settings and/or status information. The web interface has the following tabs: Device Status The default page for monitoring the operation of the DTE-3114.

  • Page 22: Web Gui - Error Handling

    3.4 SNMP The SNMP interface is intended to be used for automatic control and monitoring of a DTE-3114 by a Network Management System. To enable SNMP-based management and control, the SNMP agent has to be started via the Network setting page of the web browser.

  • Page 23: Snmp - Actual And Desired Settings

    Doing this will not interrupt the operation of channels which had the right settings already. 3.4.3 SNMP – Traps The DTE-3114 supports two SNMP traps. To become operational, the traps have to be enabled and a destination IP address and trap community must be set. Temperature trap Generated if the temperature rises above a given value.
  • Page 24 Port numbers overlap If FEC decoding is enabled for a TSoIP stream entering the DTE-3114 on port x, then port numbers x+2 and x+4 are reserved for FEC packets and cannot be used by other channels with the same source IP address.

  • Page 25: Firmware Upgrade

    18. SMPTE settings are not consistent 3.6 Firmware upgrade The firmware of the DTE-3114 can be upgraded using the Firmware Upgrade page of the web interface. First the required DTE-3114 firmware file must be obtained, e.g. from the DekTec website. An upgrade file normally has the extension: .dte.

  • Page 26: System Configuration

    Ad 2. The network will cause variable delays of the IP packets, leading to “IP jitter”. The amount of jitter depends on the size of the network, and the amount of IP-traffic congestion. The DTE-3114 will have to know the maximum amount of jitter so that it can compensate.
  • Page 27 50.870588 6.92 7.96 51.018039 6.95 7.99 51.239216 * Not a typical DVB-C bitrate. This is the minimum symbol rate that can be handled by the DTE-3114. ITU-T J.83 Annex B (“QAM-B”) Symbol rate (MBd) Bandwidth (MHz) Bitrate (Mbps) 64-QAM 4.48* 5.29...

  • Page 28: Ip Jitter

    FEC decoding is disabled.  IP jitter tolerance: The time that the DTE-3114 waits to receive "late" IP packets. Because of this delay the DTE-3114 can tolerate IP jitter up to the indicated value. The IP jitter tolerance will be automatically computed from the configured IP-to-RF delay and the FEC delay.
  • Page 29 DTE-3114 – Networked Quad QAM Modulator USER MANUAL RxIpJitterErrorCounter, not visible in the web page) and will result in lock errors (increment of nwRxLockErrorCounter and visible on the IP status webpage). After a lock error the channel will restart, resulting in a short interruption of the output.

  • Page 30: Specifications

    DTE-3114 – Networked Quad QAM Modulator USER MANUAL 5. Specifications 5.1 Network connection Network Port Standard IEEE 802.3af Power over Ethernet Data rate 10/100/1000 auto detect Mbps Connector RJ-45 with LEDs Power over Ethernet PoE class Class 0 Control Ethernet encapsulation IEEE 802.2 SNAP and Ethernet II...

  • Page 31: Rf Outputs

    DTE-3114 – Networked Quad QAM Modulator USER MANUAL SMPTE 2022-1-2007 Transport-Packet size 188 or 204 bytes TS packets / IP packet No long UDP packets FEC size: L FEC size: D FEC size: LxD Excludes interleaver delay Depends on input bitrate, FEC matrix size and number of TS packets per IP packet 5.3 RF Outputs...

  • Page 32: Modulation

    DTE-3114 – Networked Quad QAM Modulator USER MANUAL 5.4 Modulation QAM-A Standard EN 300 429 DVB-C Constellations 32/64/128/256-QAM QAM-B Standard ITU-T-J.83 Annex B Constellations 64/256-QAM Interleaver modes All I, J defined in ITU-T-J.83 1997-04, Table B.2 QAM-C Standard ITU-T-J.83 Annex C...
  • Page 33 DTE-3114 – Networked Quad QAM Modulator USER MANUAL Mechanical Mounting DIN-rail TS35, TS32 Dimensions W x H x D 34 x 133 x 133 mm (no clicker) 34 x 133 x 155 mm (with clicker) Weight g (no clicker) g (with clicker) Pending formal validation By design;...

  • Page 34: Appendix A. Dte-Mib

    +31 35 2030100 E-mail: info@dektec.com " DESCRIPTION " General MIB for DekTec's DTE-31xx product range of Networked DTV Adapters. The DTE-MIB consists of three main groups: 'system' for device-level settings, 'network' for IP settings, and 'traps' specifying the alarms. A typical DTE-31xx device supports this MIB together with a device-specific MIB.
  • Page 35 DTE-3114 – Networked Quad QAM Modulator USER MANUAL disable temperature-alarm trap generation enable temperature-alarm trap generation" ::= { temperature 2 } tmpAlarmValue OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-write STATUS current DESCRIPTION "Threshold temperature in tenths of degrees Celsius. If the internal device temperature exceeds this threshold, trap 'trTemperatureError' is generated (if enabled)."...
  • Page 36 DTE-3114 – Networked Quad QAM Modulator USER MANUAL ::= { device 7 } devWatchdogCounter OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-only STATUS current DESCRIPTION "Counter that keeps the number of times the processor is restarted because of a watchdog alarm." ::= { device 8 }...
  • Page 37 DTE-3114 – Networked Quad QAM Modulator USER MANUAL -- Group: network -- The network group holds the network receive and transmit channels -- Receive channel: -- Abstraction for a process that receives a transport stream from the -- IP network, and outputs the transport stream to a 'sink' interface, -- e.g.
  • Page 38 DTE-3114 – Networked Quad QAM Modulator USER MANUAL The value ranges between 1 and the value of 'nwRxNumberOfChannels'." DEFVAL { 1 } ::= { nwRxEntry 1 } nwRxSinkType OBJECT-TYPE SYNTAX INTEGER { asi(1), sdi(2), qam(3) MAX-ACCESS read-only STATUS current DESCRIPTION "Identifies the type of interface connected to the output of this network...
  • Page 39 DTE-3114 – Networked Quad QAM Modulator USER MANUAL specific-multicast join. If the addressing method is unicast or any-source-multicast this field is ignored." ::= { nwRxEntry 8 } nwRxFecEnable OBJECT-TYPE SYNTAX INTEGER { disable(0), enable(1) MAX-ACCESS read-write STATUS current DESCRIPTION "Enable or disable FEC reconstruction.
  • Page 40 DTE-3114 – Networked Quad QAM Modulator USER MANUAL ::= { nwRxEntry 15 } nwRxIpLostBeforeFec OBJECT-TYPE SYNTAX Counter64 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of packets lost before FEC reconstruction." ::= { nwRxEntry 16 } nwRxIpLostAfterFec OBJECT-TYPE SYNTAX Counter64 MAX-ACCESS read-only...
  • Page 41 DTE-3114 – Networked Quad QAM Modulator USER MANUAL SYNTAX INTEGER { auto(0), autoIgnorePcrs(1), delay(2), off(3) MAX-ACCESS read-write STATUS current DESCRIPTION "Mode used to estimate the transport-stream bitrate. auto ignore pcrs fixed delay off" ::= { nwRxEntry 24 } --nwRxTsManualRate OBJECT-TYPE...
  • Page 42 DTE-3114 – Networked Quad QAM Modulator USER MANUAL ::= { nwRxEntry 30 } --------------------------------------------------------------------------- -- Group: network - nwTxChannels --------------------------------------------------------------------------- nwTxNumberOfChannels OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-only STATUS current DESCRIPTION "Number of network transmit channels available on this device." ::= { nwTxChannels 1 }...
  • Page 43 DTE-3114 – Networked Quad QAM Modulator USER MANUAL ::= { nwTxEntry 3 } nwTxChannelEnable OBJECT-TYPE SYNTAX INTEGER { disable(0), enable(1) MAX-ACCESS read-write STATUS current DESCRIPTION "Enable or disable this channel. disable the channel enable the channel" DEFVAL { disable }...
  • Page 44 DTE-3114 – Networked Quad QAM Modulator USER MANUAL nwTxFecNumberOfColumns OBJECT-TYPE SYNTAX Integer32 (0..20) MAX-ACCESS read-write STATUS current DESCRIPTION "Number of FEC columns to generate." ::= { nwTxEntry 12 } nwTxIpAddressStatus OBJECT-TYPE SYNTAX INTEGER { ok(0), error(1) MAX-ACCESS read-only STATUS current DESCRIPTION "Destination IP-address resolve status.
  • Page 45 DTE-3114 – Networked Quad QAM Modulator USER MANUAL devSystemGroup OBJECT-GROUP OBJECTS { devType, devSerialNumber, devHardwareRevision, devFirmwareVersion, devPowerStatus, devDisplayName, devNetworkLinkSpeed, devWatchdogCounter, devPowerCycleCounter, devSynchroniseSettings, devStatus } STATUS current DESCRIPTION "A collection of objects providing system information." ::= { groups 2 } devSnmpTrapGroup OBJECT-GROUP...
  • Page 46 DTE-3114 – Networked Quad QAM Modulator USER MANUAL nwTxTypeOfService STATUS current DESCRIPTION "A collection of objects providing network transmit information." ::= { groups 5 } devAlarmTrapGroup NOTIFICATION-GROUP NOTIFICATIONS { trTemperatureError STATUS current DESCRIPTION "A collection of objects providing alarm trap information."...

  • Page 47: Appendix B. Dte-Qam-Mib

    +31 35 2030100 E-mail: info@dektec.com " DESCRIPTION " Device-specific MIB for QAM modulators in DekTec's DTE-31xx product range of Networked DTV Adapters. " ::= { enterprises 27070 3 3 } -- Dektec's private enterprise number dektec OBJECT IDENTIFIER ::= { enterprises 27070 }...
  • Page 48 DTE-3114 – Networked Quad QAM Modulator USER MANUAL STATUS current DESCRIPTION "Number of QAM-modulator channels available on this device." ::= { outputs 1 } outTable OBJECT-TYPE SYNTAX SEQUENCE OF OutEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "A list of QAM-modulator channel entries. The number of entries is given by the value of 'outNumberOfOutputs'"...
  • Page 49 DTE-3114 – Networked Quad QAM Modulator USER MANUAL outModulationStandard OBJECT-TYPE SYNTAX INTEGER { dvbc(0), j83AnnexB(1), j83AnnexC(2) MAX-ACCESS read-write STATUS current DESCRIPTION "Modulation standard used for this channel. dvb-c (j83-annex-a) j83-annex-b j83-annex-c" ::= { outEntry 6 } outQamMode OBJECT-TYPE SYNTAX INTEGER {...
  • Page 50 DTE-3114 – Networked Quad QAM Modulator USER MANUAL List of status codes: 1 - Modulation standard is invalid 2 - QAM mode is invalid 3 - Symbol rate is out of range 4 - Interleaver I is out of range...

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