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HCS6300 Functional Blocks
The HCS6300 consists of four main functional blocks:
• MUX: Four parallel multiplexers, each of which can combine up to two encrypted transport
streams into a single 38 Mbps transport stream. The transport streams from the transcoder
cards are supplied to the HCS6300 through the internal backplane circuit board of the card
frame.
• MOD: Four parallel 256-QAM modulators that take the MUX output streams and produce
four modulated outputs.
• Upconverter: This block takes the modulated output streams from the MOD block and places
them on up to four contiguous cable RF channels. The output of this block is a combined RF
signal four channels wide.
• Controller: Provides the PC interface for HCS6300 setup and configuration.
HCS6300 default settings assign the inputs of each channel MUX to specific slots in the
CodePlus card frame, where the RF start channel is assigned to card frame Slots 1 & 2, the
second channel is assigned to card frame Slots 4 & 5, etc.
Transport
Blocks
Streams from
Transcoder
Cards
Slot 1
2:1 MUX
Slot 2
Slot 4
2:1 MUX
Slot 5
Slot 8
2:1 MUX
Slot 9
Slot 11
2:1 MUX
Slot 12
10
MUX
Blocks
38 Mbps
256-QAM
Modulator
38 Mbps
256-QAM
Modulator
38 Mbps
256-QAM
Modulator
38 Mbps
256-QAM
Modulator
HCS6300
Service
Port
MOD
Upconverter
256-QAM
256-QAM
Upconverter
256-QAM
256-QAM
Ethernet
Block
RF Out
4 Contiguous
CATV Channels
206-4122
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