10 206-4122
HCS6300 Functional Blocks
Slot 1
Slot 2
Slot 4
Slot 5
Slot 8
Slot 9
Slot 11
Slot 12
38 Mbps
38 Mbps
38 Mbps
38 Mbps
256-QAM
256-QAM
256-QAM
256-QAM
256-QAM
Modulator
2:1 MUX
2:1 MUX
2:1 MUX
2:1 MUX
Upconverter
Transport
Streams from
Transcoder
Cards
MUX
Blocks
MOD
Blocks
Upconverter
Block
RF Out
4 Contiguous
CATV Channels
HCS6300
Service
Port
Ethernet
256-QAM
Modulator
256-QAM
Modulator
256-QAM
Modulator
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 conguration.
HCS6300 default settings assign the inputs of each channel MUX to specic 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.