Software subject to change without notice. Salsys assumes no responsibility for the use of this software. Sample calculations provided as guideline. DSM-CC Section Packing Advantage not incorporated into calculations.
Fields that can be changed IP over Ethernet
MPEG 2 DVB Data Rate Calculation Shaped Ethernet at IPe input
IP Encapsulator
IPe output
MPEG 2 TS Packets over ASI
DVB Modulator or Multiplexer
Multiplexer or Modulator
Bits per second (kbps)
total ethernet packet size (bytes)
packets per sec (pps)
TS packets generated per ethernet packet (Without Section Packing)
Overhead Bytes on the DSMCC Section incl. MPEG PID Header (Bytes)
%DSMCC OH
21.0 21.0 25.0 29.0 29.0 33.0 49.0 53.0
11.2% 11.2% 6.6% 5.1% 5.1% 4.4% 3.3% 3.1%
MPEG 2 TS Output (kbps)
IPe Port
MUX or MOD Expected % loss at Time for port MPEG TS bitrate bit level buffer to fill (sec) setting (kbps) 512.0 512.0 512.0 512.0 512.0 512.0 512.0 512.0 512.0 512.0 512.0 512.0 512.0
3.58 8.53 46.61 14.42 Never 437.21 Never 46.61 Never Never Never Never 4136.00
MPEG 2 DVB Data Packetization Number of TS Packets Ethernet Packet Size Generated per Ethernet Data Packet (bytes) (bytes) Packet (Actual fractional number) 64.0 150 350 500 550 600 1470 1518
46 132 332 482 532 582 1452 1500
0.28 0.79 1.90 2.71 2.98 3.26 7.98 8.24
Example of IP/Ethernet to MPEG Transport Stream Packet Header Payload DSMCC Header Checksum Offset Byte Data Payload DSM CC Overhead 64 Byte packets DSM CC Overhead 1518 Byte Packets DSM CC Overhead 512 Byte Packets
188.0
Bytes
4 184.0 12 4 1 167.0
Bytes Bytes Bytes Bytes Bytes Bytes
11. 2% 2%
64 Byte packets
3.1%
1518 By Byte Pa Packets
5.1%
512 Byte Packets
MUX/MOD PID Port Buffer Size (TS Packets)
Bytes
2000
376000
þÿM MP PE E G G2 2T TS S D Da at ta
142.0 56.0 44.0 82.0 32.0 170.0 52.0 192.0
75.5% 29.8% 11.7% 14.5% 5.7% 22.6% 3.5% 11.3%
DSM-CC Packetization
DVB Satellite Bandwidth Calculations Select one of the following:
Null packet Bytes % Data Over head within the DSMCC without Section Section without Packing Section Packing
the file may be seg into multiple AP P by the applicati
Alpha Factor: Modulation Format:
QP P
DVB Format
DV
Enter MPEG 2 Transport Stream Data Rate in kbps:
Inner FEC Code
Symbol Rate
Occupied Bandwidth (kHz) FEC- Inner Code Symbol Rate
Occupied Bandwidth (kHz)
Transpon Transponder der BW Inner FEC Code
27 MHz 33 MHz 36 MHz 54 MHz 72 MHz 100 MHz
MPEG-DVB-IP Bit Rate Calculator
512.0
R1/4
R1/3
R2/5
1036 kSps
775 kSps
645 kSps
1243.0
930.0
774.0
R3/4
R4/5
R5/6
343 kSps
321 kSps
308 kSps
412.0
385.0
370.0
MPEG 2 TS Data R1/2
515 kSps
R3/5
429 kSps
R2/3
386 kSps
each IP datagram m be segmented ove multiple Ethernet fra 618.0
R8/9
289 kSps
347.0
515.0
463.0
R9/10
285 kSps
342.0
MPEG 2 Trans Transport port Stream Stream Data Data Rate Through Throughput put QPSK R1/4
