SR1 Block Diagram
SR1 receives the DVB-S2 signal and De-capsulates the IP information, either form the MPEG transport stream or baseband frames. IP packets are forwarded to the default router. Multicast traffic can be forwarded directly to the network. MPEG-TS packets are encapsulated over IP and sent to the network
IP over satellite with DVB-S2
Delivering IP traffic over satellite is in use for many years. The emerging new standard, DVB-S2, provides tools to improve the performance of IP over satellite networks.
The advanced Forward error Correction used by DVB-S2 allows an increase in the channel capacity, and the use of existing transponders to bit rates higher then 100Mbps.
Modulation scheme became more sophisticated with DVB-S2. The support for VCM and ACM give operators tools to further optimize the use of the space segment.
VCM allows optimization of C-Band links by assigning different FEC to different terminals on different contours. ACM optimize Ku-band links by setting dynamically the MODCO per terminal.
Encapsulation of IP over the MPEG-TS was optimized by the introduction of Generic Streams that provides even higher efficiency when using DVB-S2.
Ayecka SR1 is an advanced DVB-S2 receiver with a GigE forwarder.
The SR1 designed with satellite reception in focus, leaving routing to be handled by external device.
SR1 implementation is based on advanced engineering methods that eliminate the bottleneck caused by CPU load. The SR1 support payload rates of up to 120Mbps
SR1 supports DVB-S2 VCM and ACM. Implementation of ACM is based on availability of return channel (terrestrial or other). The SR1 can be used as receiver for MPEG-TS and encapsulate them over IP output
Ayecka proprietary encryption (using internet connectivity to head end) is available as an optional package.
SR1 provides independent 100baseT management interface. Management interface support CLI, WEB and SNMP.
|Receiver DVB-S2 Mode|
|Modulation||QPSK, 8PSK,16APSK, 32APSK|
|Channel Rate||up to 120 Mbps|
|Roll-off Factors||0.2, 0.25, 0.35|
|Coding||LDPC and BCH decoder as |
for DVB-S2 requirements
|Code rates||½, 3/5, 2/3, ¾, 4/5, 5/6, 8/9, |
|Modes||CCM, VCM (1), ACM (1)|
|Signal Level||-35 to -75 dBm|
|Symbol Rates||150Ksps to 45 Msps |
(Low SR require PLL LNB)
|Input Connector||Type F, 75 Ohms.|
|LNB Power||14/18V, 22Khz, DiSEqC 2.0|
|PID Filtering||Up to 32 PID Ranges|
|MPE||Implementation of EN 301192 |
• 64 MAC address ﬁltering
• Multicast support
• Promiscuous mode
|GSE||• implementation of |
|MPEG-TS over IP||Pro-MPEG and RFC2250|
|Operating Temp.||0° to 50° C|
|Storage Temp.||-25° to +85° C|
|Humidity||5% to 95% non-condensing|
|Dimensions||3 cm x 10 cm x 15 cm (HxWxD)|
|Packet handling |
|L2 L3 Forwarding. Routing|
|Static routing (1) |
|Up to 32 entries including|
|VLAN (1) (Optional)||Implementation of IEEE802.1Q |
PID VLAN association
LLC SNAP VLAN Support
|Security||Reply to IP protocols can be |
|IPV6 (1) (Optional)||Support|
|Control & Monitor|
|Serial Port||Serial over USB CLI|
|IP||10/100 BaseT interface |
CLI and SNMP
Management IP setting – Static
|Over the Air||SNMP based messages from |
head end to receivers
Reply sent over the IP data
interface to the LAN and
returned to head end.
• DVB-S2 receiver
• PID ﬁltering
• Static routing
• Multicast handling Monitoring
• Signal quality
• Counters and Statistics
• SW and FW updates
|Upgrade||Software and Firmware are ﬁeld |
upgradeable via serial port or
management IP interface
|Safety||TUV/cTUVus; CE, UL/NRTL|
|EMI/EMC||FCC part 15, Class B,EN 55022, |
EN 55024, EN61000,AS/NZS