Stackable Personal Hubs
Installation and User Guide (04/01)
1
www GarrettCom com
.
.
1.0 SPECIFICATIONS
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: 32
º
F to 122
º
F (0
º
C to 50
º
C)
Storage Temperature: -20
º
C to 60
º
C
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= , 2 = receive-, 3 = t, 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 = t, 2 = transmit-, 3 = , 6 = receive- , other pins
not used.
