Comtech EF Data CIM-550 Dokumentacja Pobierz pdf (Strona 113)

CiM-550 IP Enabled Satellite Modem Rev. 2

Theory of Operation CD/CIM550.IOM

87

BUFFER DISABLE CLOCK MODE

RX DATA

RX CLOCK

(RT)

RECEIVE

DATA

INTERFACE

RX

BUFFER

PLL

CIRCUIT

CLOCK

VCXO

DIRECT

DIGITAL

SNTHESIZER

DATA FROM FEC

DECODER/DEFRAMER

RX SYMBOL

CLOCK FROM

DEMOD

BUFFER ENABLE

TX=RX CLOCK MODE

RX DATA

RX CLOCK

(RT)

RECEIVE

DATA

INTERFACE

RX

BUFFER

DATA FROM FEC

DECODER/DEFRAMER

TX CLOCK

(TT)

TRANSMIT

DATA

INTERFACE

TX

FIFO

PLL

CIRCUIT

CLOCK

VCXO

DATA TO

MODULATOR

CIRCUIT

BUFFER ENABLE

TX<>RX CLOCK MODE

RX DATA

RX CLOCK

(RT)

RECEIVE

DATA

INTERFACE

RX

BUFFER

PLL

CIRCUIT

CLOCK

VCXO

DIRECT

DIGITAL

SNTHESIZER

DATA FROM FEC

DECODER/DEFRAMER

TX CLOCK

(TT)

TRANSMIT

DATA

INTERFACE

TX

FIFO

Figure 6-2. RX Clock Modes

1 2 ... 108 109 110 111 112 113 114 115 116 117 118 ... 459 460

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