Chapter 4 Transport Stream Configuration
© 2013 Harmonic Inc. Harmonic All rights reserved. 74 Ellipse 3000 Release 3.0, Rev. B
General Sub-Menu/Tab
4.1.3 Packet Length
The Packet Length parameter sets the packet length of the transport-stream packets. The packet-
length definition is used for Reed Solomon (RS) packet correction.
The packet correction (RS) requires an extra 16 bytes to the packet. The encoder sends larger
packets (of 204 bytes instead of 188 bytes) and the external device (such as a modulator)
implements the packet corrector in the extra 16 bytes.
NOTE: Packet length setup is available only for units with DVB-ASI output interfaces and is used only for
external modulators.
Ellipse 3200 encoders support a DSNG card with an internal modulator which does not require packet-length
setting. Attempting to set the packet length to 204 will have no affect and will generate an error message.
The available options are:
■ 188 – The encoder sends regular 188-byte packets.
■ 204 – The encoder sends larger packets of 204 bytes, with extra 16 bytes for RS packet
correction.
The Packet Length default is 188.
Front Panel:
Packet Length
1 ƒ 188
2 ‚ 204
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