GarrettCom Magnum ST80 Technical Specifications Performance, Maximum Ethernet Segment Lengths

Stackable Personal Hubs Installation and User Guide (04/01)

1.0SPECIFICATIONS

1.1.Technical Specifications

Performance:

Data Rate: 10 Mbps

Partitioning: Enforced after 32 consecutive collisions.

Reconnect: Occurs after 512 bits error-free transmission.

Maximum Ethernet Segment Lengths:
10BASE-T (Unshielded twisted pair)	- 100 m (328 ft)
10BASE-T (Shielded twisted pair) - 150m (492 ft)
AUI Drop Cable	- 50 m (164 ft)
10BASE2 ThinNet (BNC)	- 185 m (607 ft)
10BASE5	- 500 m (1,640 ft)
10BASE-FL multi-mode Fiber optic	- 2 km (6562 ft)

Network Standards:

Ethernet V1.0/2.0 IEEE 802.3: 10BASE-T, 10BASE5, 10BASE2, 10BASE-FL, FOIRL.

(Magnum Stackable Personal Hubs are physical layer standard Ethernet products, and operate in networks independently of all software.)

Operating Environment:

Ambient Temperature: 32ºF to 122ºF (0ºC to 50ºC)

Storage Temperature: -20ºC to 60ºC

Ambient Relative Humidity: 10% to 95% (non-condensing)

Power Supply (External):

Input:	95 - 125 vac at 60 Hz for "-d" Models,
	200 - 250 vac at 50 Hz for "-i" Models, which have
	IEC power cable connector in the external power unit.

Output: 12 VDC, 1 A

Polarity: center positive, shell negative

Power Consumption: 12 watts max.

Connectors:

ST80: Eight shielded RJ-45 ports (one with up-link switch); one rear AUI, female, with slide lock; two Inter-Repeater-Bus connectors on the side.

ST80-B: Same as ST80, plus one rear BNC with internal termination switch.

ST80-F: Same as ST80, plus one rear Fiber ST-type.

(Shielded 10BASE-T connectors accept either unshielded or shielded wiring plugs for standard twisted pair media wiring.)

The regular RJ-45 ports support the standard for hubs-to-users twisted pair wiring: pin 1= receive+, 2 = receive-, 3 = transmit+, 6 = transmit-, other pins not used. The RJ-45 port with the up-link switch is normally the same, but when switched it supports the standard for up-links using twisted pair wiring, i.e., the transmit and the receive pairs are exchanged: pin 1 = transmit+, 2 = transmit-, 3 = receive+, 6 = receive- , other pins not used.

www . GarrettCom . com

1