GarrettCom Magnum ST80 manual AUI Pin Assignments Function, Shell

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Stackable Personal Hubs

Installation and User Guide (04/01)

The AUI port may also used for connecting to other Ethernet devices using standard AUI cabling. In this type of situation, it is important to consider the AUI segment length to the attached device, including any cascading.

The maximum transmission distance between a backbone transceiver and the AUI port of the ST80 will vary. According to Ethernet standards, when an AUI cable is used to connect the ST80 directly to a backbone transceiver, the maximum AUI segment length of 50m (165 ft.) is allowed. If the ST80 is connected to a transceiver that has been cascaded from another transceiver, the maximum AUI segment length is reduced. See the following note.

Important Note: The maximum transmission distance is decreased by 6m (20 ft.) for every additional level of network transceiver device "dropped" or "cascaded" from the original backbone transceiver tap.

The AUI connector of the Stackable Personal Hub supports standard IEEE signals, which are summarized in Table 3.5

Table 3.5 AUI Pin Assignments

Pin

Function

Pin

Function

1

Control In Circuit Shield

10

Data Out Circuit B

2

Control In Circuit A

11

Data Out Circuit Shield

3

Data Out Circuit A

12

Data In Circuit B

4

Data In Circuit Shield

13

Voltage Plus (+)

5

Data In Circuit A

14

Voltage Shield

6

Voltage Common

15

Control Out Circuit B

7

Control Out Circuit A

SHELL

Protective Ground

8Control Out Circuit Shield (conductive shell)

9Control In Circuit B

NOTES: 1) Voltage Plus (pin #13) and Voltage Common (pin # 6) use a single twisted pair in the AUI cable.

2)Pins 4, 8, 11 and 14 may be connected to pin #1.

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Contents Personal Hub Trademarks Personal HubContacting GarrettCom, Inc GarrettCom, IncTable of Contents InstallationMagnum Line Maximum Ethernet Segment Lengths Technical Specifications PerformancePower Supply External ConnectorsWarranty SwitchesDimensions WeightModel Description Ordering InformationInspecting the Package and Product IntroductionNetwork Product DescriptionPort IRB Connectors Stack Enable SwitchStackable Personal Hubs Installation and User Guide 04/01 Low cost, stand-alone 10BASE-T connectivity Features and Benefits Expandable DesignInstallation Versatility LEDs Simplify Network Installation and MaintenanceApplications To existing network via switchable Up-Link portFiber backbone Connection External InstallationPower Supply LED will Illuminate Power JackCombining and Mounting Stacked Units Wall or Vertical Surface Mounting for non-stacked units onlyAUI Connection Twisted Pair Segment ConnectionsShell AUI Pin Assignments FunctionFiber Optic Connection Model ST80-F only BNC Connection Model ST80-B onlyStacking the ST80 Personal Hubs Switchable Up-Link FeatureIncreased port capacity via stacking Cascading the ST80 Personal Hub with the Up-Link port Switch in X positionOperation Functional Operation, Use of LED IndicatorsUsing the BNC Internal Termination Switch Model ST80-B only Using the Up-Link switchUsing the Stack Enable switch Before Calling for Assistance TroubleshootingWhen Calling for Assistance Return Material Authorization RMA ProcedureShipping and Packaging Information No Problem Found