THOMSON Amethyst III, User Manual, Page: 209 / 306

Appendix A ’Technical Specifications’ — General Device Specifications
Amethyst III DTV Smart Switch 209
User Manual
General Device Specifications
Performances
Table A-16. Amethyst III Performances
Parameters Values
TS throughput For TS over ASI
For TS over IP
Max bitrate received and transmitted
per Gigabit Ethernet interface 700 Mbps
Max bitrate received and associated
with TS over IP inputs 1.4 Gbps
Max monitored Table bitrate per
platform 10 Mbps
Transport Stream Data Rate per ASI
port Min: 100 kbps
Max: 200 Mbps
Bitrate per SMPTE 310M port 19.4 Mbps
Latency (from ASI In to ASI Out) When delay compensation is not enabled,
latency time depends on the bit rate:

684 μs for 3 Mbps

375 μs for 5 Mbps

206 μs for 10 Mbps

83 μs for 25 Mbps

55 μs for 38 Mbps

42 μs for 50 Mbps
IP latency Out of Delay compensation and FEC activation:

< 1 ms
When FEC error correction is activated, the
reordering and recovery mechanism requires a
buffer of 210 RTP packets. It introduces a latency
that depends on the bit rate.
When delay compensation is activated, the
latency depends on the configuration. It is
indicated on the graph in the
Switches
supervision tab in the GUI.
T2-MI Latency (from ASI In to ASI
Out) 32 ms
T2-MI Latency (from IP In to IP Out) 37 ms