• ISO 9314 FDDI - 100 mbps timed token passing ring LAN
• Quality of Service (QOS) features: "Async" for normal data and "Sync" for time sensitive data
• Maximum packet size 4500 Bytes
• Dual Attach Station (DAS) for fault tolerant dual, counter rotating rings
• Fiber Distributed Data Interface (FDDI), 1300 nm LED over Multi-mode Fiber (MMF)
• up to 2 km between nodes, 100 km total ring circumference
• The DAS model includes control for external Optical Bypass Relay (OBR)
• PMC single wide, 32 bit, 33 mHz, front panel I/O

Physical Characteristics
• Power Requirements: +5 VDC, 2.5A max
• Operating Temperature: 0° to 50° C
• Storage Temperature: -25° to 80° C
• Operating Relative Humidity: 10 to 90% (non-condensing)
• Dimensions 106 x 176 mm
• FCC Part 15 Class B, UL, CE, CSA

Software Drivers Available
• Solaris: SPARC & x86
• VxWorks
• AIX
• pSOS PPC
• LynxOS
• Windows NT
• UnixWare

PCI bus Interface
• PCI SIG 2.1
• 32 bits, 33 mHz
• 5 volt signalling
• Master Mode
• PCI auto configuration
• Software control over Optical Bypass Relay (OBR)

FDDI
• 136 kByte packet buffer
• 64 entry CAM for hardware address lookup
• ANSI Station Management (SMT) 7.3 & ANSI X3T12

Models
• 2250-FD Fiber DAS (dual attach station)
• SC connectors to multi-mode fiber
• 6 pin (2x3 header) connector for OBR control
• P/N 122504
• Optical Bypass Relay module w/ MIC ports
• Panel mount, 1 meter cables
• 6 pin (2x3 header) plug for control
• P/N 317092
• Optical Bypass Relay module w/ ST ports
• Panel mount, 1 meter cables
• 6 pin (2x3 header) plug for control
• P/N 317093

• 2250-FSS Fiber SAS (single attach station)
• SC connector to multi-mode fiber
• P/N 122505

Indicator LEDs
• Both dark - uninitialized or fail
• Green only - Ring operating single attach
• Yellow - Unable to connect, possible cable error
• Green & yellow - Both rings operating on DAS models