Digital Equipment DEChub ONE Repeater 900SL Installation Manual Download Page 6

Connect hubs or station.

To connect two hubs . . .

a.

Set the Ring In and the Ring Out Autowrap
switches to 1 to enable Autowrap.

b. Connect the repeater’s Ring Out port to 

the Ring In port of the repeater in the 
adjacent hub. Also connect the repeater’s
Ring In port to the Ring Out port of the 
repeater in the adjacent hub.

c.

Once the ring becomes active, verify that
the Ring In and Ring Out LEDs are on.

To use as a lobe extender . . .

a.

Set the Ring In and the Ring Out 
Autowrap switches to 1 to enable 
Autowrap.

b. Connect the station to the Ring Out  port.

c.

Once the ring becomes active, verify 
that the Ring Out LED is on.

Installing a Repeater in a DEChub 900 MultiSwitch (continued)

6

      DECrepeater 900TL

Install the repeater on the hub.

PK–02570–IL

a.

Align the repeater’s 48-pin 
connector with any available 48-pin
slot in the hub.

b. Place the repeater’s bottom 

mounting tab into the mounting slot
on the hub.

c.

Pivot the repeater into place. You 
hear a click when the repeater is 
seated.

d. Press down on the release lever to 

ensure that it is locked.

e.

With power on in the hub, verify that
the Power, Module OK, and Speed 
LEDs are on. If there is traffic on the
network, the Ring A or B LED will 
also be on.

PK–02570–IL

The release lever is

lifted and clicks

back into place

as the module

is seated.

LKG–8258-93I

Mounting
tab

LKG–8152-93I

Note: 
Before installing the module in a hub, verify that the
module’s input power rating does not exceed the
available power that the Hub Manager LCD displays.

Summary of Contents for DEChub ONE Repeater 900SL

Page 1: ...t operates at a speed of 4 or 16 Mb s It extends trunk and lobe distances for unshielded and shielded 100 ohm cable As a member of Digital s Token Ring product family it operates in a DEChub 900 Multi...

Page 2: ...o change without notice and should not be construed as a commitment by Digital Equipment Corporation Digital Equipment Corpo ration assumes no responsibility for any errors that may appear in this doc...

Page 3: ...t override Speed switch settings 8 Ring In Port Connects Ring In to the Ring Out port of a repeater or Multistation Access Unit MAU 9 Autowrap Switches Determine whether or not the repeater automatica...

Page 4: ...n here is used only when the repeater is in a standalone configuration 12 Power Connector Provides power connection for the repeater DEChub ONE only Rear Panel of DEChub ONE Repeater 900TL 4 DECrepeat...

Page 5: ...tiSwitch DECrepeater 900TL 5 Set Speed switch Set the Speed switch to 16 when the network speed is 16 Mb s or 4 when the speed is 4 Mb s LKG 8150 93I LKG 8151 93I a Lift up the latch on the rear cover...

Page 6: ...DEChub 900 MultiSwitch continued 6 DECrepeater 900TL Install the repeater on the hub PK 02570 IL a Align the repeater s 48 pin connector with any available 48 pin slot in the hub b Place the repeater...

Page 7: ...standard 19 inch rack using a shelf assembly Digital part number H9544 MS For a wall mounting position two screws 19 7 centimeters 7 75 inches apart on the wall Turn the screws until tight and then b...

Page 8: ...Out port of the adjacent MAU or repeater d Once the ring becomes active verify that the Ring In and Ring Out LEDs are on Connect a MAU repeater or station Installing a DEChub ONE Repeater 900TL conti...

Page 9: ...ts bottom mounting tab until it disengages from the hub DECrepeater 900TL 9 Note When you remove a repeater from the DEChub 900 MultiSwitch do not turn off the hub power Remove the repeater from the h...

Page 10: ...crolling pattern Ring Speed Notes Even if you set the repeater s Speed switch to the wrong speed no data will be lost or corrupted Traffic loops back at the point where there is a speed mismatch and t...

Page 11: ...y possible with a DECrepeater 900TL Digital recommends that you keep cable lengths within the maximums found in the industry guideline to allow for future network expansion and upgrade Table 2 Industr...

Page 12: ...k with multiple wiring closets When distances exceed the lobe lengths in Table 2 or if the MAU does not have Digital s Autowrap functionality two repeaters are required When a MAU has Autowrap enabled...

Page 13: ...upgrade If you have network management flash or an upgrade is in progress do a downline load otherwise replace repeater Wait for upgrade to complete Ring In or Ring Out LED has Network management To...

Page 14: ...DEChub 900 MultiSwitch in a DEChub 90 Ethernet networks supports Token Ring networks DEChub ONE ONLY Ring In and Ring Out LEDs Network management has To change settings you can use flash together dis...

Page 15: ...0 ft Power Supply Hub provides Provided by H7082 AB Input Power 7 W 5 Vdc 7 W 5 Vdc Connectors RJ 45 RJ 45 Agency certification CE CSA FCC T V CE CSA FCC T V UL VCCI VDE UL VCCI VDE Acoustics Prelimin...

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