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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