Appendix A ’Technical Specifications’ — Signal Processing
Amethyst III DTV Smart Switch 197
User Manual
SMPTE 310M Interface
Table A-2. SMPTE 310M interfaces specifications
Standard
compliance
SMPTE ST 310:2010
Connectors 75 Ohms BNC
Bitrate
19.4 Mb/s only
Gigabit Ethernet Interface
Table A-3. Gigabit Ethernet interfaces specifications
Density 4 ports, bidirectional:
Typical usage
2 input ports
2 output ports (with signal duplication)
Connectors RJ-45 connectors
Speed/Mode
Auto
1000BASE-T
Half-duplex/100BASE-TX
Full-duplex/100BASE-TX
Supported
protocols
IPv4
a
RTP/UDP
IGMPv2/v3 for subscription to input
VLAN tagging
Not
Supported
Layer 2
Protocols
Ethernet 802.3 datagrams are discarded on
reception.
Max bitrate 700 Mbps per interface (reception + emission, including
forwarding rules)
Signal
p
rocessing
The IP stream is expected
In correct order and without duplication: Amethyst III
does not perform reordering neither deletion of
duplicated datagram (even when RTP layer is
present).
Unfragmented: fragmented packets are not
processed (regarding TS over IP).
Note that Amethyst III changes the output RTP sequence
number if the delay compensation is activated to avoid
gaps in sequence number due to a switch operation.
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