Nevion CP560 User Manual
CP560 DVB-T2 Gateway
User’s Manual
Revision: 2.2.B (5008)
2016-05-03
Valid for SW version 2.2.0 and newer
nevion.com
Contents
1 History 9
2 Introduction 11
2.1 Scope 11
2.2 Warnings, cautions and notes 11
2.3 Heed warnings 12
2.4 Contact information 12
3 Short Product Description 13
3.1 Summary of Features 13
3.2 Software options 15
4 Installing the Equipment 17
4.1 Inspect the package content 17
4.2 Installation Environment 17
4.3 Equipment installation 18
4.4 Ventilation 18
4.5 Power supply 19
4.5.1 AC power supply 19
4.5.1.1 AC power cable 19
4.5.1.2 Protective Earth/technical Earth 20
4.5.1.3 Connecting to the AC power supply 20
4.5.2 DC power supply 21
4.5.2.1 DC power cable 21
4.5.3 Powering up/down 21
5 Functional Description 23
5.1 Introduction 23
5.2 TS inputs 23
5.3 TS output 23
5.4 SFN adapter 23
5.5 Video over IP 23
5.5.1 Input and output 24
5.5.2 Protocol mapping 25
5.6 T2-gateway module 25
5.7 Management sub-system 26
5.7.1 Graphical user interface 26
5.7.2 Configuration database 26
5.7.3 Alarm manager 27
5.8 Time synchronisation 28
6 Physical Description 29
6.1 Connecting the CP560 29
6.1.1 Physical description overview 29
6.1.2 ASI ports 29
6.1.3 ASI input ports 30
6.1.4 ASI output ports 31
6.1.5 1 PPS Input 31
6.1.6 Ethernet Data Ports 31
6.1.7 SFP port 32
6.1.8 Power Supply 32
6.1.9 Ethernet Management Port 32
6.1.10 Technical Earth 32
6.1.11 Alarm/Reset 32
6.1.12 Serial USB interface 33
7 Operating the Equipment 35
7.1 Accessing the graphical user interface 35
7.2 Password protection 35
7.2.1 Resetting the password list 36
7.3 Changing the IP address of the unit 36
7.3.1 Changing IP address via the Web GUI 36
7.3.2 Changing the management port IP address via terminal interface 37
7.3.3 Detecting the management port IP address 38
7.3.3.1 USB Interface 38
7.3.3.2 Nevion Detect 38
8 WEB Interface 41
8.1 Login 41
8.2 Status header 42
8.3 Status 43
8.3.1 Current Status 43
8.3.2 Alarm log 45
8.4 Device Info 46
8.4.1 Product info 46
8.4.2 Alarms 49
8.4.2.1 Device alarms 49
8.4.2.2 Global configuration 50
8.4.2.3 Relays and LED 51
8.4.2.4 Alarm log settings 53
8.4.3 Port Mappings 54
8.4.4 Time Settings 55
8.4.5 Network 58
8.4.5.1 Interfaces 59
8.4.5.1.1 Main 59
8.4.5.1.2 Interface Settings 59
8.4.5.1.3 Manual IP Settings 60
8.4.5.1.4 Interface Status 60
8.4.5.1.5 Detect Settings 60
8.4.5.1.6 Alarms 61
8.4.5.1.7 Advanced 61
8.4.5.1.8 Status 62
8.4.5.1.9 VLAN 63
8.4.5.1.10 Main Settings 64
8.4.5.1.11 Manual IP Settings 64
8.4.5.1.12 Advanced Settings 64
8.4.5.1.13 SFP 65
8.4.5.2 IP Routing 73
8.4.5.3 TXP Settings 74
8.4.5.4 SNMP Settings 75
8.4.5.5 Tools 77
8.4.5.5.1 Ping 77
8.4.5.5.2 Traceroute 78
8.4.6 Clock Regulator 80
8.4.6.1 Main 80
8.4.6.2 Alarms 81
8.4.7 Configuration Manager 81
8.4.7.1 Save/Load Configs 81
8.4.7.1.1 Save Configuration To File 81
8.4.7.1.2 Load Configuration From file 82
8.4.7.1.3 Load Configuration from Remote Device 83
8.4.7.1.4 Load options 83
8.4.7.2 Boot Log 84
8.4.7.3 Stored Configurations 84
8.4.7.4 Emergency Switch 85
8.4.8 Maintenance 88
8.4.8.1 General 88
8.4.8.2 Software Upgrade 90
8.4.8.3 Feature Upgrade 91
8.4.9 Users 92
8.4.10 GUI Preferences 93
8.5 Inputs 94
8.5.1 Inputs Overview 94
8.5.1.1 IP Inputs 96
8.5.1.2 Switch Inputs 97
8.5.2 Input 98
8.5.2.1 Main 99
8.5.2.2 Alarms 101
8.5.2.3 IP 106
8.5.2.3.1 IP Configuration 106
8.5.2.3.2 FEC 108
8.5.2.3.3 Ping 109
8.5.2.3.4 Regulator 110
8.5.2.4 Services 112
8.5.2.4.1 Service List 112
8.5.2.5 PIDs 116
8.5.2.5.1 PIDs Grid 116
8.5.2.5.2 PID rates 118
8.5.2.6 Tables 119
8.5.2.6.1 Tables 119
8.5.2.6.2 Sources 121
8.5.2.6.3 Settings 122
8.5.3 Switch 123
8.5.3.1 Main 123
8.5.3.2 Alarms 125
8.6 Outputs 125
8.6.1 Outputs Overview 125
8.6.2 T2-MI Output 126
8.6.3 Main 127
8.6.4 DVB-T2 128
8.6.4.1 Main configuration 128
8.6.4.2 SFN Configuration 131
8.6.4.3 PLP configuration 133
8.6.4.3.1 Source bit rate control settings 138
8.6.4.4 Modulation interface configuration 139
8.6.4.5 Individual addressing configuration 140
8.6.4.6 Future Extension Frames configuration 142
8.6.5 IP 142
8.6.6 TS-OUT -> IP Destination 143
8.6.6.1 Main 143
8.6.6.2 FEC 146
8.6.6.3 Ping 148
8.6.7 Alarms 149
9 SNMP 151
9.1 SNMP agent characteristics 151
9.2 MIB naming conventions 151
9.3 MIB overview 151
9.3.1 Supported standard MIBs 151
9.3.2 Custom MIBs 151
9.4 SNMP related configuration settings 153
9.4.1 Community strings 153
9.4.2 Trap destination table 153
9.4.3 Trap configuration 154
9.5 Alarm/status related SNMP TRAPs 154
9.5.1 The main trap messages 154
9.5.2 Severity indications 155
9.5.3 Alarm event fields 155
9.5.4 Matching of on/off traps 156
9.5.5 Legacy trap messages 157
9.6 Using net-snmp to access MIB information 157
9.6.1 Reading a parameter with snmpget 158
9.6.2 Writing a parameter with snmpset 158
10 Examples of Use 159
10.1 Intro 159
10.2 Installation in a system 159
10.3 Single PLP at 40MBit/s 159
10.4 SFN operation 161
10.5 Seamless SFN operation 161
10.6 Redundant system with TNS541 TS Seamless Switch 162
10.6.1 Signal empty PLPs 163
11 Preventive Maintenance and Fault-finding 165
11.1 Preventive maintenance 165
11.1.1 Routine inspection 165
11.1.2 Cleaning 165
11.1.3 Servicing 165
11.1.4 Warranty 166
11.2 Fault-finding 166
11.2.1 Preliminary checks 166
11.2.2 PSU LED not lit / power supply problem 167
11.2.3 Fan(s) not working / unit overheating 168
11.3 Disposing of this equipment 168
11.4 Returning the unit 168
A Glossary 169
B Technical Specification 175
B.1 Physical details 175
B.1.1 Half-width version 175
B.2 Environmental conditions 175
B.3 Power 175
B.3.1 AC Mains supply 175
B.3.2 DC supply 176
B.4 Input/output ports 176
B.4.1 DVB ASI port 176
B.4.2 Ethernet management port 176
B.4.3 Ethernet data port 177
B.4.4 Serial USB interface 177
B.5 Alarm ports 177
B.5.1 Alarm relay/reset port specification 177
B.6 External reference 178
B.6.1 10MHz/1 PPS input 178
B.7 Compliance 178
B.7.1 Safety 178
B.7.2 Electromagnetic compatibility - EMC 178
B.7.3 CE marking 179
B.7.4 Interface to “public telecommunication system” 179
C Forward Error Correction in IP Networks 181
C.1 IP stream distortion 181
C.2 Standardisation 182
C.3 FEC matrix 182
C.4 Transmission aspects 185
C.5 Quality of service and packet loss in IP networks 186
C.6 Error improvement 187
C.7 Latency and overhead 188
D Quality of Service, Setting Packet Priority 191
D.1 MPLS 191
D.2 Layer 3 routing 191
D.2.1 CP560 configuration 192
D.3 Layer 2 priority 192
D.3.1 CP560 configuration 192
E Validation of DVB-T2 Parameters 193
E.1 T2-Frame 193
E.1.1 T2-Base 193
E.1.2 T2-Lite 194
E.2 Physical Layer Pipe 194
F Estimated Transmission Time 195
F.1 How the CP560 uses the configured ETT value 195
F.1.1 Example with 2 modulators 195
F.2 Implications of adjusting ETT 195
F.3 How to set ETT 196
G Alarms 197
H References 207
History 9
1 History
Revision Date Comments
2.2 2012-03-09 – Added Input Switching feature description
– Added T2 parameter validation tables in appendix E
– Added DVB-T2 estimated transmission time description in appendix F
– General updates to reflect changes in GUI, in particular DVB-T2 settings in chapter 8.6.4
2.0 2011-07-08 – Added FEC feature description
– Added Transmitter Signature feature description
– Added Reed-Solomon ASI FEC feature description
– Added DVB-T2 MIP feature description
– Added individual addressing functions description
– Updated screenshots of the GUI
1.12.0 2011-02-02 – Added Joint bit rate control feature description
– Added Port mapping feature description
– Updated screenshots of the GUI
1.8.0 2010-10-21 – Added IP input feature description
– Added SFP feature description
– Added multiple PLP feature description
– Added Leap Second handling feature description
1.6.4 2010-09-27 – Added 10 ASI card (2020) adjustments
– Updated screenshots of the GUI (status/input)
1.6.0 2010-07-20 – Revised version including new features
– Added IP output feature
– Added individual addressing feature
– Updated GUI screenshots
1.0 2009-11-17 – First version
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CP560 DVB-T2 Gateway User’s Manual Rev. 2.2.B (5008) ID: um_t2gateway
Introduction 11
2 Introduction
2.1 Scope
This manual is written for operators and users of the CP560 DVB-T2 Gateway and provides necessary information for installation, operation and day-to-day maintenance of the unit. The manual
covers the functionality of the software version 2.2.0 or later, and continues to be relevant to subsequent software versions where the functionality of the equipment has not been changed. When a
new software version changes the functionality of the product, an updated version of this manual
will be provided.
The manual covers the following topics:
• Getting started
• Equipment installation
• Operating instructions
• WEB interface description
• Preventive maintenance and fault finding
• Alarm listing
• Technical specifications
2.2 Warnings, cautions and notes
Throughout this manual warnings, cautions and notes are highlighted as shown below:
Warning: This is a warning. Warnings give information, which if strictly
observed, will prevent personal injury and death, or damage to personal
property or the environment.
Caution: This is a caution. Cautions give information, which if strictly
followed, will prevent damage to equipment or other goods.
Note: Notes provide supplementary information. They are highlighted for
emphasis, as in this example, and are placed immediately after the relevant
text.
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12 Introduction
2.3 Heed warnings
• All warnings marked on the product and in this manual should be adhered to. The
manufacturer cannot be held responsible for injury or damage resulting from negligence of warnings and cautions given.
• All the safety and operating instructions should be read before this product is installed
and operated.
• All operating and usage instructions should be followed.
• The safety and operating instructions should be retained for future reference.
2.4 Contact information
Our primary goal is to provide first class customer care tailored to your specific business and
operational requirements.
Please contact us at:
Telephone +47 22 88 97 50
Fax +47 22 88 97 51
E-mail support@nevion.com
WEB http://www.nevion.com
Mail and visiting address Nevion
Nils Hansens vei 2
NO-0667 Oslo
Norway
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Short Product Description 13
3 Short Product Description
The CP560 is part of the Nevion cProcessor product family for processing and handling of MPEG
transport streams. The cProcessor family represents a line of compact and powerful, yet costeffective, products designed for advanced modification of MPEG Transport Streams.
The CP560 is a DVB-T2 gateway that uses the advanced capabilities of the cProcessor family to
rearrange the transport stream (TS) into the DVB-T2 modulator interface (T2-MI). In addition to
the data, this T2-MI interface contains signalling, control and timing information for the DVB-T2
modulators.
3.1 Summary of Features
Features of the CP560 include:
• Transport Stream (TS) encapsulation in T2-MI packets
− Single or Multiple Physical Layer Pipe (PLP)
− Null packet deletion
− Input Stream Synchronisation (ISSY) support (short/long)
− Normal and high efficiency transmission mode
− Time interleaving support
• L1-Signalling
− Bandwidth selection (1.7MHz, 5MHz, 6MHz, 7MHz, 8MHz, 10MHz)
− Configurable signalling of the of the DVB-T2 frames
− Modulation up to 256-QAM
• SFN adaptation
− DVB-T2 timestamp for SFN networks (relative/absolute)
− 1 PPS timing reference input
− SNTP support for Absolute timestamps
• Individual addressing
− Multiple Input Single Output (MISO)/ Single Input Single Output (SISO) transmission
mode support for individual modulators
− Individual PAPR parameters for individual modulators
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14 Short Product Description
• Transport stream monitoring
− TR 101 290 Priority 1 monitoring: Sync loss, CC error
− Monitoring of min/max bitrate for individual PIDs
− Output PID monitoring (CC errors)
• Flexible alarm configuration options
− Alarm levels freely configurable individually for each channel
− Individual setting of alarm levels based on PID values
• Compact, cost-effective solution
• User-friendly configuration and control
− WEB/XML based remote control
− Easy access to unit from any WEB browser
− Easy integration to NMS systems with SNMP Trap support
− SNMPv2c agent
− Equipment monitoring from Nevion Connect
• Transmission of T2-MI transport stream over Gigabit Ethernet
• Reception of transport stream over Gigabit Ethernet
• IP transport stream Forward Error Correction (Rx and Tx)
• Several T2-MI output copies
− ASI ports may be configured as input or output copies
− Supports up to 8 IP output copies, each to any destination
• SFP (Small Form-Factor Pluggable) interface option
• Input Switching
− An input switch may be set as the source of a PLP
− An input switch may switches between 2 or more inputs
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Short Product Description 15
3.2 Software options
The CP560 functionality depends on the software licences installed. The following table describes
the features available as software options. Please refer to Section 8.4.8.3 for more information how
to obtain and enable feature upgrades.
Table 3.1 Functionality enabled through software licences
Functionality Code Max
SFP module SFP - Enables operation of the Small form-factor pluggable (SFP) transceiver slot.
SFP configuration SFPC - Enables configuration interface and parameter storage for some specifically
Number of PLPs activated PLPX 8 Maximum number of PLPs (Physical Layer Pipes).
Number of input
ports activated
Joint bit rate control JBRC - Controls if the Joint Bit Rate Control feature is activated for sending PLP
Input switching ISW - Enables creation of input switching groups.
Forward Error Correction FEC - Controls availability of the FEC feature for IP outputs and IP inputs.
Ethernet data interface IP - Controls whether carriage of MPEG transport streams on Ethernet is made
DVB-T2 SFN T2SFN - Enables SFN synchronisation for T2 systems.
Allow ASI inputs ASIN - Enables use of ASI input ports. Without this key the device can be used
Emergency switch
support
Connect control TCON - Enables supervision of the unit through the Connect Software.
TSIX 16 Controls the number of simultaneously activated transport stream inputs.
ESW - Enables support for external switch panel to switch between pre-loaded
Description
value
supported SFP modules.
bitrate over SNMP to other devices.
available.
with IP input only.
configurations.
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Installing the Equipment 17
4 Installing the Equipment
Caution: The CP560 must be handled carefully to prevent safety hazards
and equipment damage. Ensure that the personnel designated to install
the unit have the required skill and knowledge. Follow the instructions
for installation and use only installation accessories recommended by the
manufacturers.
4.1 Inspect the package content
• Inspect the shipping container for damage. Keep the shipping container and cushioning
material until you have inspected the contents of the shipment for completeness and have
checked that the CP560 is mechanically and electrically in order.
• Verify that you received the following items:
− CP560 with correct power supply option
− Power cord(s)
− CD-ROM containing documentation and Flash Player installation files
− Any optional accessories you have ordered
Note: 48 VDC versions do not ship with a power cord; instead a Power
D-SUB male connector for soldering to the supply leads is supplied.
4.2 Installation Environment
As with any electronic device, the CP560 should be placed where it will not be subjected to extreme
temperatures, humidity, or electromagnetic interference. Specifically, the selected site should meet
the following requirements:
◦
• The ambient temperature should be between 0 and 50
• The relative humidity should be less than 95 %, non-condensing. Do not install the unit
in areas of high humidity or where there is danger of water ingress.
• Surrounding electric devices should comply with the electromagnetic field (EMC) standard IEC 801-3, Level 2 (less than 3 V/m field strength).
C (32 and 122◦F).
• The AC power outlet (when applicable) should be within 1.8 meters (6 feet) of the CP560.
• Where appropriate, ensure that this product has an adequate level of lightning protec-
tion. Alternatively, during a lightning storm or if it is left unused and unattended for
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18 Installing the Equipment
long periods of time, unplug it from the power supply and disconnect signal cables. This
prevents damage to the product due to lightning and power-line surges.
Warning: If the CP560 has been subject to a lightning strike or a power
surge which has stopped it working, disconnect the power immediately.
Do not re-apply power until it has been checked for safety. If in doubt
contact Nevion.
4.3 Equipment installation
The CP560 is designed for stationary use in a standard 19" rack. When installing please observe
the following points:
• Route cables safely to avoid them being pinched, crushed or otherwise interfered with.
Do not run AC power cables and signal cables in the same duct or conduit.
• The CP560 has all connectors at the rear. When mounting the unit, ensure that the installation allows easy access to the rear of the unit.
• The fans contained in this unit are not fitted with dust/insect filters. Pay particular attention to this when considering the environment in which it shall be used.
• Make sure that the equipment is adequately ventilated. Do not block the ventilation holes
on each side of the CP560.
4.4 Ventilation
Openings in the cabinet are provided for ventilation to protect it from overheating and ensure
reliable operation. The openings must not be blocked or covered. Allow at least 50 mm free airspace each side of the unit.
Warning: Never insert objects of any kind into this equipment through
openings as they may touch dangerous voltage points or create shorts that
could result in a fire or electric shock. Never spill liquid of any kind on or
into the product.
• This product should never be placed near or over a radiator or heat register. Do not place
in a built-in installation (e.g. a rack) unless proper ventilation is provided in accordance
with the device airflow design as depicted in Figure 4.1 .
• The CP560 may be vertically stacked in 19" racks without intermediate ventilation panels.
In systems with stacked units forced-air cooling may be required to reduce the operating
ambient temperature.
Figure 4.1 shows the air path through the unit, where cool air is taken from the left hand
side, seen from the front.
CP560 DVB-T2 Gateway User’s Manual Rev. 2.2.B (5008) ID: um_t2gateway
Installing the Equipment 19
CP541
Cool
Air In
Warm
Air Out
Figure 4.1 Air path through the unit
4.5 Power supply
The CP560 may be delivered rated for AC or DC operation, respectively.
Warning: This product should be operated only from the type of power
source indicated on the marking label. Please consult a qualified electrical
engineer or your local power company if you are not sure of the power
supplied at your premises.
4.5.1 AC power supply
The CP560 has a wide-range power supply accepting the voltage range 100-240 VAC, 50/60 Hz.
Please refer to Appendix B for a detailed specification of the AC power supply.
4.5.1.1 AC power cable
Ensure that the AC power cable is suitable for the country in which the unit is to be operated.
Caution: Power supply cords should be routed so that they are not likely
to be trod on or pinched by items placed upon or against them. Pay
particular attention to cords at plugs and convenience receptacles.
The unit is supplied with a two meter detachable mains supply cable equipped with a moulded
plug suitable for Europe, UK or USA, as appropriate. The wires in the mains cable are coloured
in accordance with the wire colour code shown in Table 4.1.
Table 4.1 Supply cable wiring colours
Wire UK (BS 1363) EUROPE (CEE 7/7) USA (NEMA 5-15P)
Earth Green-and yellow Green-and yellow Green
Neutral Blue Blue White
Live Brown Brown Black
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20 Installing the Equipment
4.5.1.2 Protective Earth/technical Earth
To achieve protection against earth faults in the installation introduced by connecting signal cables
etc., the equipment should always be connected to protective earth. If the mains supply cable is
disconnected while signal cables are connected to the equipment, an earth connection should be
ensured using the Technical Earth connection terminal on the rear panel of the unit.
Warning: This unit must be correctly earthed through the moulded plug
supplied. If the local mains supply does not provide an earth connection
do not connect the unit.
Caution: Consult the supply requirements in Appendix B prior to connecting the unit to the supply.
The unit has a Technical Earth terminal located in the rear panel. Its use is recommended. This is
not a protective earth for electrical shock protection; the terminal is provided in order to:
1. Ensure that all equipment chassis fixed in the rack are at the same technical earth potential. To achieve this, connect a wire between the Technical Earth terminal and a suitable
point in the rack. To be effective all interconnected units should be earthed this way.
2. Eliminate the migration of stray charges when interconnecting equipment.
Warning: If the terminal screw has to be replaced, use an M4x12mm long
pozidrive pan head. Using a longer screw may imply a safety hazard.
4.5.1.3 Connecting to the AC power supply
Warning: Do not overload wall outlets and extension cords as this can
result in fire hazard or electrical shock. The unit is not equipped with an
on/off switch. Ensure that the outlet socket is installed near the equipment
so that it is easily accessible. Failure to isolate the equipment properly may
cause a safety hazard.
To connect the unit to the local AC power supply, connect the AC power lead to the CP560 mains
input connector(s) and then to the local mains supply.
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Installing the Equipment 21
4.5.2 DC power supply
The CP560 can be delivered with a 48 VDC power supply for use in environments where this
is required. The DC power supply accepts an input voltage range of 36-72 VDC. Please refer to
Appendix B for detailed specification of the power supply.
4.5.2.1 DC power cable
Units delivered with DC power supply have a 3-pin male D-SUB power connector instead of the
standard mains power connector. Also a female 3-pin D-SUB connector is supplied. The pin assignment is shown in Table 4.2. The power cable itself is not supplied.
Table 4.2 DC power connector pin
assignment
Pin Placement Specification
1 top + (positive terminal)
2 middle - (negative terminal)
3 bottom Chassis Ground
To connect the unit to the local DC power supply:
1. Use an electronics soldering iron or a hot air workstation to attach the supplied female
D-SUB power connector to suitable power leads.
2. Connect the power leads to your local power supply.
3. Connect the DC power connector, with attached power leads, to the CP560 power input
connector.
4.5.3 Powering up/down
Before powering-up the unit, please ensure that:
• The unit is installed in a suitable location
• The unit has been connected to external equipment as required
Power up the unit by inserting the power cable connected to the power source. When the unit has
finished the start-up procedure, the fans will run at normal speed. Please check that all cooling
fans are rotating. If they are not, power down the unit immediately.
Power down the unit by removing the power supply connector at the rear of the unit.
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CP560 DVB-T2 Gateway User’s Manual Rev. 2.2.B (5008) ID: um_t2gateway
Functional Description 23
5 Functional Description
5.1 Introduction
The CP560 is a DVB-T2 gateway designed for the encapsulation of Transport Streams (TS) in T2MI frames. The product offers an easy-to use WEB based user interface, a flexible and powerful
T2-MI encapsulation module and integration with network management systems via the SNMP
interface.
This chapter gives a brief description of the CP560 inner structure, allowing a better understanding
of the device’s functionality, its operation mode and its applications.
Figure
description of the different blocks is provided in following sections.
5.1 shows a functional block diagram of the main components inside the CP560. A detailed
5.2 TS inputs
The CP560 can include up to 10 ASI ports, 8 of them can be used as input ports and 2 as output
ports.
The number of simultaneous TS inputs that can be enabled is limited by a software licence key.
The default configuration includes only one input port and two output ports. If needed, further
inputs can be enabled with the software licence key.
5.3 TS output
The CP560 generates a T2-MI output. When using ASI output,the transport stream is presented
on at least one ASI output port. In addition one port is programmed to carry the same signal, as
described in Section 6.1.2.
The output is always re-clocked, configuring a wanted bitrate for the output stream.
The CP560 can transmit the same transport stream over IP via the extra physical Ethernet data
connector(s) or via an SFP module inserted in the SFP slot.
5.4 SFN adapter
The product is fitted with an SFN adapter that generates an accurate DVB-T2 timestamp. This
enables synchronisation of the output clock to the Network Time Protocol (NTP) or a 1PPS signal
for operation in SFN networks. The 1 PPS signal can be taken from an external source.
5.5 Video over IP
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24 Functional Description
Figure 5.1 Product block diagram
5.5.1 Input and output
The CP560 supports MPEG transport streams over IP, the functionality is protected with a separate
SW licence.
The CP560 has 8 IP inputs, these are modelled to have the same functionality as the ASI input
ports, and content received will be available to the DVB-T2 Gateway generating the output. The
input streams can be either SPTS or MPTS and streams with or without RTP layer are accepted.
The DVB-T2 Gateway can generate one output and the operator chooses whether to transmit this
stream over IP or not.
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Functional Description 25
Ethernet
14 bytes
[IEEE 802.3/802.3u]
IP
20 bytes
[RFC 769]
Optional
VLAN
4 bytes
[802.1q]
UDP
8 bytes
(RFC 768)
RTP
12 bytes
(RFC 1889)
1-7 MPEG TS packets
188 – 1316 bytes
[ISO/IEC 13818-1]
TS
BBFRAMEBUILDER
TS Packetizer
Clock & Time
base
T2MI TS
T2
config
Scheduler
config
Rate Control
1PPS
Time stamp
L1 signaling
Two Ethernet interfaces can be used simultaneously forvideo carriage, the interfaces are bi-directional.
When using the SFP slot, one of the Electrical interfaces will be disabled.
5.5.2 Protocol mapping
Figure 5.2 Protocol mapping
When transmitting T2-MI streams over IP, the protocol mapping is according to figure 5.2. The
VLAN framing and RTP encapsulation are optional.
The RTP layer is important for diagnosing network related problems, since it contains a sequence
number that can be used for packet loss detection.
The maximum transfer unit (MTU) for Ethernet is usually 1500 bytes. This limits the number of
transport stream packets to embed into the outgoing Ethernet/IP frames to be between 1 and 7.
5.6 T2-gateway module
Figure 5.3 DVB-T2 Gateway module
The DVB-T2 Gateway module illustrated in figure 5.3 is the main module of the CP560, it encapsulates TS-input packets in Baseband frames, generates an accurate timestamp and generates
L1-signalling frames. The resulting T2-MI frames are packetized and encapsulated again in TS
packets to be transported over a network.
According to the DVB-T2 frame structure, T2-MI frames carrying user data are sent first followed
by a timestamp frame and a L1-frame. The time stamp frames and L1-frames are generated accordingly to the settings defined in the user interface.
The DVB-T2 packet bitrate is kept constant by the time source or the 1PPS signal, this prevent the
overflowing of the buffer on the modulator side when the unit and the modulator uses the same
time source.
ID: um_t2gateway CP560 DVB-T2 Gateway User’s Manual Rev. 2.2.B (5008)
26 Functional Description
5.7 Management sub-system
The management subsystem is a set of modules that handles all the interfaces to monitor and
control the operation of the CP560.
The management subsystem communicates with the users, both humans and machines, via the
following interfaces:
• Front panel and back panel LEDs for status
• Graphical user interface via Flash application in WEB browser
• SNMP traps on alarms
• SNMPv2c Agent
• TXP (XML Protocol) to retrieve and set configuration and status
• Alarm relays on alarms
• SNTP client for real time clock synchronisation
• Terminal interface either over Telnet or USB interface for debugging
• FTP server for direct file system access
The management subsystem communicates with other internal modules to make the unit perform
the wanted operations.
5.7.1 Graphical user interface
Operators monitor and control the CP560 mainly via the Adobe Flash GUI application served from
the device’s WEB server. The GUI application is accessed via a WEB browser that communicates
with the configuration framework through an HTTP/XML based protocol.
The device exposes extensive status information to the web GUI providing detailed reports and
real-time monitoring displays to the device administrator.
All the device configuration parameters available on the CP560 can be controlled from the web
GUI.
5.7.2 Configuration database
The management subsystem processes configuration changes as transactions. All configuration
changes made to the device are validated against the current running configuration before committing them to the device. This limits the risks of the administrator implementing changes that
may cause down-time on the unit due to incompatible configuration settings.
Configurations can be imported and exported via the GUI. It is possible to clone the entire configuration of one device to another by exporting the configuration of one device and importing it to
another.
CP560 DVB-T2 Gateway User’s Manual Rev. 2.2.B (5008) ID: um_t2gateway
Functional Description 27
Configurations exported via the web GUI are formatted as human readable/modifiable XML files.
These files can be viewed or altered using any standard text or XML editor such as Windows
Notepad.
To simplify cloning of devices, certain exported parameters within the XML file are tagged as
device specific and therefore will be ignored when imported to either the same device or another.
These parameters are as follows:
• Device Name and Inventory ID
• IP network parameters
• ASI Port mappings
• On-device stored configurations
5.7.3 Alarm manager
The CP560 contains an integrated alarm manager responsible for consistently displaying the alarm
status of each individual interface.
“Port Alarms” are alarms bound to a specific input or output port via a port indexing system.
The alarm severity for port related alarms can be configured per port level. “Device Alarms”
are global to the device and are not bound to any specific port. They do not follow the indexing
scheme. These are classified as “System Alarms”.
Alarms are graphically represented in a tree structure optimized for simplified individual viewing
and configuration. The “Device Alarm” tree is available from the “Device Info” page. The alarm
tree for each port is available on the “Alarms” page for each port.
The alarm manager presents the alarm of highest severity upon the external interfaces of the device. The severity level of each individual alarm can be defined by the administrator. Alarm
configuration is covered in greater detail in the “Alarm configuration” section.
SNMP traps are dispatched to registered receivers whenever there is an alarm status change.
Alarm relay 1 and alarm LED are controlled to signal whenever there is a critical alarm present.
Alarm relay 2 is configurable.
The alarm manager keeps a log in non-volatile memory of the latest 10000 alarms that have occurred.
As an additional option, the alarm manager in the CP560 supports so-called Virtual Alarm Relays.
These are highly programmable items that can be customised to react to virtually any given alarm
event or combination of alarm events. The status of each virtual alarm relay can be viewed in the
GUI and can also be exported using SNMP. Details on configuring the virtual alarm relays can be
found in the WEB interface section.
ID: um_t2gateway CP560 DVB-T2 Gateway User’s Manual Rev. 2.2.B (5008)
28 Functional Description
5.8 Time synchronisation
The CP560 contains an internal real-time clock that is used for internal timestamps and the generation of DVB-T2 timestamps for SFN operation.
In order to generate precises SFN timestamps, the CP560 needs to be connected to both a NTP
timesource (for absolute time in seconds) and 1PPS (for subsecond time).
The internal time can be synchronised as follows:
• From NTP servers using SNTP protocol. Up to four NTP servers can be configured for
NTP server redundancy (see section
• Connect 1 PPS signal to the CP560 (see section 6.1.1) and enable 1 PPS synchronisation
(see section 8.4.6).
• Then Resync the internal time of the CP560 (see section 8.6.4.1).
8.4.4).
CP560 DVB-T2 Gateway User’s Manual Rev. 2.2.B (5008) ID: um_t2gateway
Physical Description 29
Inputs
GND
OPTICAL
USB
1PPS/
10MHz
ALARMPSU
ALARM / RESET
CONTROL
AC100-240V
0,7A 50-60Hz
ASI IN
ACTIVE
ASI 1 ASI 2 ASI 3 ASI 4
ASI IN
ACTIVE
ASI 5 ASI 6 ASI 7 ASI 8
DATA 2DATA SFP DATA 1
USB
Main output port
SFP Port
USB Port
Ethernet
Data Ports
Alarm / Reset
Interface
1PPS
Input
Mains Power
Connector
Technical
Earth
output copy
Ethernet
Management Port
LED replica of
front panel
6 Physical Description
6.1 Connecting the CP560
6.1.1 Physical description overview
The front panel provides two LEDs per CP560. The meaning of each LED indicator is shown in
table 6.1.
Table 6.1 Front panel LED descriptions
Indicator Colour Description
Power Green This LED is lit when power is on and initialization is complete
Alarm Red This LED is lit when a failure is detected by the unit
These LEDs are also replicated on the rear panel, which is shown in figure 6.1.
Remove mains supply before moving or installing the equipment. Ensure ESD precautions are
observed while interconnecting equipment.
6.1.2 ASI ports
The CP560 can be shipped with one ASI card with 10 ASI connectors as shown in 6.2. Another
configuration includes 8 ASI connectors on the back panel as shown in figure 6.1.
When the CP560 is used with ASI output, one port is reserved for the single supported TS output.
A number of the ports are reserved for input, while the remaining ones can be configured either as
inputs or copies of the main ASI output port. Switching of the direction on a port does not require
a re-boot, and can be performed while the other ports are in service.
ID: um_t2gateway CP560 DVB-T2 Gateway User’s Manual Rev. 2.2.B (5008)
Figure 6.1 Rear panel on 2 ASI card variant
30 Physical Description
GND
OPTICAL
USB
1PPS/
10MHz
ALARMPSU
ALARM / RESET
CONTROL
AC100-240V
0,7A 50-60Hz
DATA 2DATA SFP DATA 1
USB
Inputs/Ouputs
Mains Power
Connector
Technical
Earth
1PPS
Input
(For optional
SFN operation)
Alarm / Reset
Interface
LED replica of
front panel
Ethernet
Management Port
Ethernet
Data Ports
USB Port
SFP Port
1
2
3
4
5 6
7 8 9 10
Inputs
Outputs
The available options for each port are shown in table 6.2 for the 2 ASI card and 1 ASI card configuration.(X) means valid option, (-) means not valid.
Table 6.3 Port direction options on
the 10 connector variant
ASI port Input Output Copy Output
1 X X -
2 X X -
3 X X -
4 X X -
5 X X -
6 X X -
7 X - -
8 X - -
9 - X -
10 - - X
Figure 6.2 Rear panel with 10 ASI connectors
6.1.3 ASI input ports
All physical input ports can be available for usage, but the number of simultaneously enabled
ports is limited by the licence key Number of ASI ports activated.
In the eight ports configuration, each ASI input port has two LEDs associated with it. The yellow
LED indicates active input and the green LED indicates that sync is detected.
CP560 DVB-T2 Gateway User’s Manual Rev. 2.2.B (5008) ID: um_t2gateway
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