GarrettCom DS80C - Manual (Page 6)

Magnum DS80F & DS80C Dual-speed Stackable Hubs Installation and User Guide (12/01)
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1.0 SPECIFICATIONS
1.1 Technical Specifications
Performance of Dual-Speed Ports
When a port is operating at 100Mbps:
Data Rate: 100Mbps
When a port is operating at 10Mbps:
Data Rate: 10Mbps
Partitioning: Enforced after 63 consecutive collisions
Auto-reconnect: Occurs after one packet of error-free reception
Network Standards
100Mb: Ethernet IEEE 802.3u, 100BASE-TX, 100BASE-FX
10Mb: Ethernet IEEE 802.3, 10BASE-T
Auto-sensing for speed: IEEE 802.3u
Packet-Processing Between Domains
Filtering and Forwarding Rate from 100Mbps ports: 148,800 pps max
Filtering and Forwarding Rate from 10Mbps ports: 14,880 pps max.
Processing type: Store and Forward
Auto-learning: 8K address table, shared for all traffic domains
Packet buffers: 512KB, dynamically shared on all domains
Latency (not including packet time):
100 to 10Mbps: 5
µ
s
10 to 100Mbps: 5
µ
s
Path Delay Value: 50 BT on all ports
Maximum Ethernet Segment (or Domain) Lengths
10BASE-T (Unshielded twisted pair) - 100 m (328 ft)
100BASE-TX (CAT 5 UTP) - 100 m (328 ft)
100BASE-FX, half-duplex: (multi-mode) - 412 m (1350 ft)
100BASE-FX, full-duplex: (multi-mode) - 2.0 km (6,562 ft)
100BASE-FX, half-duplex: (single-mode) - 412 m (1350 ft)
100BASE-FX, full-duplex: (single-mode) - 20.0 km (65,620 ft)
100BASE-FX, full-duplex: (single-mode, long) - 40.0 km (131,240 ft)
Operating Environment
Ambient Temperature: 32 º F to 104 º F (0 º C to 40 º C)
Storage Temperature: -5 º C to 160 º F (-20 º C to 70 º C)
Ambient Relative Humidity: 10% to 95% (non-condensing)
Power Supply (External )
Input: 95-125 vac at 60Hz for “-d” Models
200-250 vac at 50Hz for “-i” Models, which have IEC
power cable connector in the external power unit.
Output: 5VDC, 2Amps
Polarity: center positive, shell negative
Power Consumption: 8 watts typical, 10 watts max.
External -48VDC Power Supply (Optional )