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Magnum H80B and H80P Personal Hubs User Guide (07/95)
3.5.2
AUI Connections (Model H80P only)
The Magnum H80P is equipped with a rear DTE (male
AUI) port which serves a dual purpose of supplying power to the unit
and providing backbone connectivity.
NOTE: Since the H80P derives its power from this port,
this connection must be completed before the unit will
function, unless an optional external power supply is
being used..
Before connecting the DTE port of the Magnum H80P,
note that the maximum cable length of an AUI drop cable is 50m
(165 ft).
The Magnum H80P DTE connector supports standard
IEEE signals, summarized in Table 3.5.2.
Pin
Function
1
Control In Circuit Shield 10
2
Control In Circuit A
3
Data Out Circuit A
4
Data In Circuit Shield
5
Data In Circuit A
6
Voltage Common
7
Control Out Circuit A
8
Control Out Circuit Shield (conductive shell)
9
Control In Circuit B
NOTES:
1)
2)
Table 3.5.2: DTE Pin Assignments
Voltage Plus (pin #13) and Voltage Common
(pin # 6) use a single twisted pair in the AUI cable.
Pins 4, 8, 11 and 14 may be connected to pin #1.
Pin
Function
Data Out Circuit B
11
Data Out Circuit Shield
12
Data In Circuit B
13
Voltage Plus (+)
14
Voltage Shield
15
Control Out Circuit B
SHELL Protective Ground
18
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