Instruction manual

Chapter 1 Introduction RIC-E3/ETH, RIC-T3/ETH Installation and Operation Manual
1-4 Functional Description
1.3 Functional Description
Figure 1-4 illustrates the RIC-E3/ETH and RIC-T3/ETH functional diagram.
Receive Clock
Mux
RxTx
TxRx
TNRZ
RNRZ
TCLK
RCLK
Ethernet InterfaceE3/T3 Interface
Internal Clock
Oscillator
Figure 1-5. RIC-E3/ETH and RIC-T3/ETH Functional Diagram
E3 Interface
The E3 interface includes a line interface transceiver, which utilizes HDB3
encoding and decoding. The E3 interface operates at the 34.368 Mbps data rate.
The line transceiver recovers clock and data from the incoming signals. The E3
cable length is user-selectable, and complies with ITU-T G.703 standards. The
connectors are two shielded BNC connectors with 75Ω impedance.
T3 Interface
The T3 interface includes a line interface transceiver, which utilizes B3ZS encoding
and decoding. The E3 interface operates at the 44.736 Mbps data rate. The line
transceiver recovers clock and data from the incoming signals. The T3 cable length
is user-selectable, and complies with ITU-T G.703 standards. The connectors are
two shielded BNC connectors with 75Ω impedance.