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INFORMATION

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Black Box Corporation

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Stackable MiniHub

Ports

Stack Enable

LINK/TX

PORTS

PWR

COL

POL/TX

UP LINK

Off

IRB1

IRB2

PWR

12VDC, 1A

JUNE 2001

LE2801A

LE2801AE

LE2801A-BNC

LE2801AE-BNC

LE2801A-FO

LE2801AE-FO

Содержание Stackable MiniHub

Страница 1: ...x 724 746 0746 Mail order Black Box Corporation 1000 Park Drive Lawrence PA 15055 1018 Web site www blackbox com E mail info blackbox com Stackable MiniHub Stackable MiniHub Ports 1 2 3 4 5 6 7 8 S t...

Страница 2: ...the interference by one of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circu...

Страница 3: ...te con carritos o pedestales que sean recomendados por el fabricante 7 El parato el ctrico debe ser montado a la pared o al techo s lo como sea recomendado por el fabricante 8 Servicio El usuario no d...

Страница 4: ...externa deber ser localizada lejos de las lineas de energia 16 El cable de corriente deber ser desconectado del cuando el equipo no sea usado por un largo periodo de tiempo 17 Cuidado debe ser tomado...

Страница 5: ...nstall The Complete Package 9 3 2 The Installation Procedure 9 3 3 Stacking the MiniHubs 12 3 4 Cascading 16 3 5 BNC Connection LE2801A BNC LE2801AE BNC only 17 3 6 Fiberoptic Connection LE2801A FO LE...

Страница 6: ...its of error free transmission Maximum Segment Length UTP unshielded 10BASE T 100 m 328 ft STP shielded 10BASE T 150 m 492 ft AUI drop cable 50 m 164 ft 10BASE2 ThinNet BNC 185 m 607 ft 10BASE5 500 m...

Страница 7: ...orted Pins 1 2 3 and 6 Enclosure High strength steel Cooling Method Convection Operating Temperature 32 to 122 F 0 to 50 C Storage Temperature 4 to 140 F 20 to 60 C Humidity 10 to 95 noncondensing Pow...

Страница 8: ...nments two to 40 users that need an independent Ethernet network They operate as self sufficient units to provide 10BASE T Ethernet connectivity for local users and devices Small independent networks...

Страница 9: ...s on one segment from causing downtime elsewhere on the network Stackable MiniHubs have LINK and RX LEDs for each front panel RJ 45 port located above the corresponding ports see the illustration belo...

Страница 10: ...le MiniHubs are completely interoperable with other Ethernet compliant network devices Each is fully compliant with IEEE 802 3 specifications for 10 Mbps CSMA CD operation This allows Stackable MiniHu...

Страница 11: ...SE T Connectivity Operating your Stackable MiniHub in a standalone environment as a self sufficient device is a very low cost method of providing small workgroups access to a variety of Ethernet netwo...

Страница 12: ...cable segment into one of the Stackable MiniHub s front mounted RJ 45ports With the MiniHub s rear mounted Up Link switch set to x run 10BASE T cable from the existing network outlet to the MiniHub s...

Страница 13: ...er ports are available where only 10BASE T wiring is used and full length Ethernet segments are supported on all segments In this application set the Up Link switch to the straight through or position...

Страница 14: ...any items are missing or damaged contact Black Box If you need to return the unit see Sections 5 2 and 5 3 3 2 The Installation Procedure Installing a Stackable MiniHub is very simple First keeping in...

Страница 15: ...n mount the MiniHub in almost any desired position 3 2 2 POWERING UP THE HUB Once you ve mounted the Stackable MiniHub plug the included external power supply s DC power cord into the matching power j...

Страница 16: ...tion the pinning is crossed inside the MiniHub Insert the male plug on one end of a standard 10BASE T cable into the 8th RJ 45 female port on the Stackable MiniHub Connect the other end of the network...

Страница 17: ...3 2 1 PORTS PWR COL POL TX UP LINK O f f I R B 1 I R B 2 O n PWR 12VDC 1A Stackable MiniHub Ports 1 2 3 4 5 6 7 8 S t a c k E n a b l e LINK TX 8 7 6 5 4 3 2 1 PORTS PWR COL POL TX UP LINK O f f I R...

Страница 18: ...e IRB cable connects from IRB1 to IRB1 or from IRB2 to IRB2 4 If you will add more Stackable MiniHubs connect another IRB cable from the unused IRB connector of the existing stack s top unit to the co...

Страница 19: ...I R B 1 I R B 2 O n PWR 12VDC 1A Stackable MiniHub Ports 1 2 3 4 5 6 7 8 S t a c k E n a b l e LINK TX 8 7 6 5 4 3 2 1 PORTS PWR COL POL TX UP LINK O f f I R B 1 I R B 2 O n PWR 12VDC 1A Stackable Min...

Страница 20: ...f I R B 1 I R B 2 O n PWR 12VDC 1A Stackable MiniHub Ports 1 2 3 4 5 6 7 8 S t a c k E n a b l e LINK TX 8 7 6 5 4 3 2 1 PORTS PWR COL POL TX UP LINK O f f I R B 1 I R B 2 O n PWR 12VDC 1A Stackable...

Страница 21: ...n operate together even though there may be a full segment of distance between them To satisfy the four repeater rule defined by Ethernet standards you shouldn t place more than four hubs or repeaters...

Страница 22: ...maximum distance allowed 10BASE FL is used for a fiber segment length of up to 2000 m 6561 ft while FOIRL is used for fiber segments of up to 1000 m 3280 ft in length 1 Before connecting the fiberopt...

Страница 23: ...n the normal cause is improper cable polarity Swap the fiber cables at the Stackable MiniHub s rear fiber port connectors to remedy this situation in most cases This chapter describes the LEDs and ope...

Страница 24: ...and Reconnection Stackable MiniHubs will automatically partition any port where 32 consecutive collisions occur or after 6 5 ms of continuous transmissions Network integrity is checked every 800 ms a...

Страница 25: ...ne type that the cables have been properly connected and that the cables or wires have not been crimped or damaged during installation 3 Make sure that the DC power cord is properly attached to the Mi...

Страница 26: ...ding The nature and duration of the problem When the problem occurs The components involved in the problem Any particular application that when used appears to create the problem or make it worse 5 3...

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