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Magnum H80B and H80P Personal Hubs User Guide (07/95)
GARRETT
1
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)- 150 m (492 ft)
AUI Drop Cable - 50 m (164 ft)
10BASE2 ThinNet (BNC) - 185 m (607 ft)
Network Standards:
Ethernet V1.0/2.0 IEEE 802.3: 10BASE-T, 10BASE5.
(Magnum 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) (H80B, optional for H80P):
Power 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.
Power Consumption: 10 watts max
Connectors:
H80B: 8 front-mounted shielded RJ-45 (1 with up-link
switch), 1 rear BNC with internal termination
switch.
H80P: 8 front-mounted shielded RJ-45, 1 rear
DTE (male AUI)
(Shielded 10BASE-T connectors accept either unshielded or
shielded wiring lugs 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 MDI-X 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.