Chapter 1 Introduction RIC-155 Installation and Operation Manual
1-6 Technical Specifications
• Fiber optic/electrical interface provides connection to the fiber optic or
coaxial cables.
• CPU controls the RIC-155 operation. It includes a microprocessor, flash
memory, and SRAM.
• Power supply provides 5V and +3.3V voltage to the RIC-155 internal
elements.
1.4 Technical Specifications
10/100BaseT
Interface
Number of Ports 1
Compatibility Relevant sections of IEEE 802.3u, 802.3x, 802.1p and
802.3q
Data Rate 10BaseT: 10 Mbps
100BaseT: 100 Mbps
Line Code 10BaseT: Manchester
100BaseT: MLT3
LAN Table 1,024 MAC addresses with automatic learning and aging
Filter Mode 64 bytes: 148,810 pps
1518 bytes: 8,127 pps
Filter TAG Mode 64 bytes: 142,000 pps
1518 bytes: 8,110 pps
Buffer 1 MB
Maximum Frame
Size
1536 bytes
Cable Type Unshielded twisted pair (UTP), 19–26 AWG
Connector RJ-45
STM-1/OC-3c
Interface
Fiber Optic Interface See Table 1-1
Electrical Interface
Line Attenuation
Not greater than 12.7 dB at 78 MHz
Coax Cable Length 135m (442 feet), when using RG-59 B/U (at 78 MHz, in
accordance with the square root of frequency law).
Impedance 75Ω
Connector BNC coaxial
Timing • Internal, from internal oscillator
• Loopback, from received signal