Digital Equipment DECrepeater 900FL User manual

EK–DTFOR–IN. A01
DECrepeater 900FL
INSTALLATION
PK–02580–IL
DEChub ONE Repeater 900FL DECrepeater 900FL
The DECrepeater 900FL is a Token Ring fiber-optic repeater that operates at a
speed of 4 or 16 Mb/s. It provides conversion between fiber-optic and copper
mediaanditextendstrunkdistancesusingfiber-opticcable.AsamemberofDigi-
tal’s Token Ring product family, it operates in a DEChub 900 MultiSwitch, or as a
standalone unit (DEChub ONE Repeater 900FL).
LKG–9189-94I

FCC NOTICE – Class A Computing Device:
Thisequipmentgenerates,uses,andmayemitradiofrequencyenergy. Theequipmenthasbeentypetestedandfoundtocomplywiththe
limits for a Class A computing device pursuant to Subpart J of Part 15 of FCC Rules, which are designed to provide reasonable
protection against such radio frequency interference when operated in a commercial environment. Operation of this equipment in a
residential area may cause interference; in which case, measures taken to correct the interference are at the user’s expense.
The following are trademarks of Digital Equipment Corporation:
            
EK–DTFOR–IN. A01
October 1994
TheinformationinthisdocumentissubjecttochangewithoutnoticeandshouldnotbeconstruedasacommitmentbyDigital
Equipment Corporation. Digital Equipment Corporation assumes no responsibility for any errors that may appear in this
document.
Copyright 1994 by Digital Equipment Corporation
All Rights Reserved.
Printed in U.S.A.
VCCI NOTICE – Class 1 Computing Device:
Thisequipmentisinthe1stClasscategory(informationequipmenttobeusedincommercial and/or industrialareas)andconformstothe
standardssetby theVoluntaryControlCouncil forInterference byDataProcessing Equipmentand Electronic OfficeMachinesaimedat
preventing radio interference in commercial and/or industrial areas.
Consequently,whenusedin aresidentialarea or inanadjacent areathereto,radiointerference maybecaused to radiosandTV receivers,
etc.
Read the instructions for correct handling.
Copyright
2 DECrepeater 900FL
CE NOTICE – Class A Computing Device:
Warning!
Thisis aClass Aproduct. In adomestic environment this product maycause radiointerference, inwhich casethe user may be required
to take adequate measures.
Achtung!
Dieses ist einGerät der Funkstörgrenzwertklasse A. In Wohnbereichen können bei Betrieb dieses Gerätes Rundfunkstörungen auftre-
ten, in welchen Fällen der Benutzer für entsprechende Gegenmaßnahmen verantwortlich ist.
Attention!
Ceci est un produit de Classe A. Dans un environment domestique, ceproduit risque de créer des interférences radioélectriques, il
appartiendraalors à l’utilisateur de prendre les mesures spécifiques appropriées.

1) Power LED. Lights when the repeater has power.
2) Module OK LED. Lights when the repeater passes
self-test.Iftherepeaterfailsself-test,theModuleOK
LED is off.
3) Ring A/B LEDs. In a DEChub 900 MultiSwitch,
when either the A LED or the B LED is on, the
respective A or B ring is active. In a standalone
repeater, both Ring LEDs are always off.
4) Speed LEDs. Either the 16 LED or the 4 LED is on
to show the repeater speed.
5) Fiber-optic Ring In LED. Lights when a fiber-optic
Ring In connection is active.
6) Fiber-opticRingOutLED.Lightswhenafiber-optic
Ring Out connection is active.
7) Speed Switch. Sets speed. Set to 16 when the
network speed is 16 Mb/s. Set to 4 when the
network speed is 4 Mb/s. Network management
cannot override speed switch settings.
8) Fiber-optic Ring In Port. Connects the receive
(Rx) and transmit (Tx) fiber-optic Ring In
port to the fiber-optic Ring Out port of a remote
repeater.
9) Fiber-optic Ring Out Port. Connects the receive
(Rx) and transmit (Tx) fiber-optic Ring Out
port to the fiber-optic Ring In port of a remote
repeater.
10) Reset Switch. Resets all settings, except for the
speed switch setting, to their factory defaults. To
reset while turning on the power, press the reset
switch with a pen or screwdriver.
Front Panel
DECrepeater 900FL 3
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LKG-8970-94I
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Note:
The rear panel shown here is used only when the
repeater is in a single-slot hub configuration.
1 ) Copper Ring In LED. Lights with a Ring In
connection.
2 ) Copper Ring Out LED. Lights with a Ring Out
connection.
3) PowerConnector.Providespowerconnectionforthe
repeater.
4 ) Copper Ring In Connector. Connects Ring In to the
Ring Out connector of a MAU or repeater.
5 ) Copper Ring In Autowrap Switch. Determines
whether the repeater automatically loops back when
it detects a disconnected link on Ring In. If the Ring In
port connects to a device with Digital’s Autowrap, set
the switch to 1 to enable Autowrap. If the Ring In port
connects to a device without Digital’s Autowrap, set
the switch to 0 to disable Autowrap.
6 ) Copper Ring Out Connector. Connects Ring Out to
the Ring In connector of a MAU or repeater.
7 ) Copper Ring Out Autowrap Switch. Determines
whether the repeater automatically loops back when
it detects a disconnected link on Ring Out. If the Ring
Out port connects to a device with Digital’s Autowrap,
set the switch to 1 to enable Autowrap. If the Ring Out
port connects to a device without Digital’s Autowrap,
set the switch to 0 to disable Autowrap.
8 ) Not used. Reserved for out-of-band network
management.
Rear Panel of DEChub ONE Repeater 900FL
4DECrepeater 900FL
LKG-8971-94I
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

Whenyouinstall arepeaterintheDEChub900MultiSwitch,youdonothavetoturnoffthehubpower.
Remove the rear cover (if necessary).
If you want to install a DEChub ONE Repeater 900FL in a hub,
you need to remove the rear cover.
1
Installing a Repeater in a DEChub 900 MultiSwitch
DECrepeater 900FL 5
Set Speed switch.
2Set the speed switch to 16 when the
network speed is 16 Mb/s or 4 when
the speed is 4 Mb/s.
a. Loosen the screw on the single-slot
hub until it disengages.
b. With one hand holding the front of
the MAU, and your other hand
holding the single-slot hub,
carefully pull the two units apart.
LKG–8972-94I

3
Installing a Repeater in a DEChub 900 MultiSwitch (continued)
6DECrepeater 900FL
Compare your module’s power require-
ments with the values shown in the Hub
Manager status display (see example).
Module’s Manufacturing
Label (Example)
If any of the module’s power ratings exceed
the values shown in the status display, add
another power supply (see the
DEChub 900
MultiSwitch Owner’s Manual).
Hub Manager Status
Display (Example)
LKG–9564–94I
Available: 90.5 W
5V: 13.0 A, 15V: 3.5 A
PN
REV
SN
FTZ
DTFOR–MA
A01
4H41400011
C–208/90 V
5.1 VDC, 1.4A, 7W
4Install 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 is
also on.
PK–02570–IL
The release lever is
lifted and clicks
back into place
as the module
is seated.
LKG–8258-93I
Mounting
tab
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.

Connect repeater ports.
5To connect a repeater in a DEChub 900 to a
repeater in an adjacent DEChub 900, or to a
standalone repeater, perform the following
steps:
a. Connecttherepeater’sRing In andRing
Out cables as follows:
From a repeater To adjacent
in a DEChub 900 repeater
Ring In (Rx) Ring Out (Tx)
Ring In (Tx) Ring Out (Rx)
Ring Out (Rx) Ring In (Tx)
Ring Out (Tx) Ring In (Rx)
b. Oncetheringbecomesactive,verifythat
the fiber-optic Ring In and Ring Out
LEDs are on.
Installing a Repeater in a DEChub 900 MultiSwitch (continued)
LKG–8973-94I
DECrepeater 900FL 7

a. Set the Copper Ring In and the Copper
Ring Out Autowrap switches to 1 or 0.
Set the switch to 1 to enable Autowrap
when the Copper Ring In or Copper Ring
OutportconnectstoadevicewithDigital’s
Autowrap, orthe port is not connected to
the network. Otherwise, set the switch to
0 to disable Autowrap.
Mount Repeater (optional).
1
Connect power supply.
3a. Connect the power supply cable to
the power connector.
b. Plug the power supply into a wall
outlet.
SetAutowrap switches.
2
Youcan placetherepeater ona table,mount itona wall,or mountitin astandard 19-inchrack
using a shelf assembly, Digital part number H9544-MS.
Forawallmounting,positiontwoscrews19.7centimeters(7.75inches)apartonthewall.Turn
screws until tight and then back off two turns. Hang the repeater using the keyholes.
Installing a DEChub ONE Repeater 900FL
LKG–8974-94I
To
Power
Supply
Note: The repeater is not manageable in standalone DEChub ONE configuration.
8DECrepeater 900FL


Connect fiber-optic ports.
5
Check LEDs.
4
Withpower on, verify that the Powerand
Module OK LEDs are on.
Connect copper ports.
6
Installing a DEChub ONE Repeater 900FL (continued)
LKG–8976-94I
LKG–8977-94I
a. Connect the repeater’s fiber-optic
Ring In and Ring Out trunk cables as
follows:
From DEChub To adjacent
ONE repeater repeater
Ring In (Rx) Ring Out (Tx)
Ring In (Tx) Ring Out (Rx)
Ring Out (Rx) Ring In (Tx)
Ring Out (Tx) Ring In (Rx)
b. Once the ring becomes active, verify
thatthe fiber-opticRing Inand RingOut
LEDs are on.
a. Connect the repeater’s copper Ring In
and copper Ring Out cables as follows:
From repeater To adjacent MAU
Copper Ring In Ring Out
Copper Ring Out Ring In
b. Once the ring becomes active, verify
that the copper Ring In and Ring Out
LEDs are on.
LKG–9190-94I
DECrepeater 900FL 9

Removing a Repeater from a DEChub 900 MultiSwitch
a. Lift up the release lever on the
hub.
b. Pivot the repeater back on its
bottom mounting tab until it
disengages from the hub.
Note:
When you remove a repeater from the
DEChub 900 MultiSwitch, do not turn off the
hub power.
Remove the repeater from the hub.
1
2
Disconnect the trunk connector cables
from the repeater.
Lift the release lever.
LKG–8978-94I
Mounting
tab
10 DECrepeater 900FL