Digital Equipment DECserver 900TM Bedienungsanleitung
DECserver 900TM
INSTALLATION
The DECserver 900TM is a 32-port network access server that connects asyn–
chronous devices, including terminals, printers, modems, or PCs to an Ethernet
localareanetwork(LAN).ItoperatesinaDEChub900MultiSwitchorasastanda-
loneaccessserver.TheDECserver900TMisconfiguredwith32MJ8(RJ-45)con-
nectors, and provides limited modem control with the 8-pin connectors. Each port
supports 16 baud rates from 75 baud to 115.2 Kbaud. The DECserver 900TM in-
cludes 4 megabytes (MB) of standard memory, and can be expanded to 8 MB.
LKG–8088-93I
2DECserver 900TM
The following are trademarks of Digital Equipment Corporation:
DEC,DECconnect,DEChub,DEChubONE,DECserver,Digital,MultiSwitch,ULTRIX,
OpenVMS, and the Digital logo.
UNIX is a trademark of UNIX System Laboratories, Inc.
EK–DSRVZ–IN. A01
August 1993
The information in this document is subject to 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 document.
Copyright 1993 by Digital Equipment Corporation
All Rights Reserved.
Printed in U.S.A.
Copyright
FCC NOTICE – Class A Computing Device:
This equipment generates, uses, and may emit radio frequency energy. The equipment
has been type tested and found to comply with the limits for a Class A computing device
pursuanttoSubpartJofPart15ofFCCRules,whicharedesignedtoprovidereasonable
protection against such radio frequency interference when operated in a commercial
environment.Operationofthisequipmentinaresidentialareamaycauseinterference;in
which case, measures taken to correct the interference are at the user’s expense.
VCCI NOTICE – Class 1 Computing Device:
This equipment is in the 1st Class category (information equipment to be used in
commercial and/or industrial areas) and conforms to the standards set by the Voluntary
Control Council for Interference by Data Processing Equipment and Electronic Office
Machines aimed at preventing radio interference in commercial and/or industrial areas.
Consequently, when used in a residential area or in an adjacent area thereto, radio
interference may be caused to radios and TV receivers.
Read the instructions for correct handling.
Front Panel
DECserver 900TM 3
1) Power LED. Lights when the module has power.
2) Module OK LED. Lights when the module passes self-
test. Flashes when a non-fatal error occurs on self-test.
If the module fails self-test, the Module OK LED is off.
3) Network Traffic. Flashes or remains on depending on
network activity.
4) Network OK. Lights when the module has an active net-
work connection.
5) Seven-Segment Display. Provides error and status
information.
6) Flash RAM Slot. Provides an opening in which to insert
the Flash RAM card.
7) Reset Switch. Resets the module to factory defaults.
To reset: while turning on the power, press and hold the
reset switch until the Module OK LED flashes; or if the
DECserver 900TM is in operational mode (the seven
segment display shows the “race track” pattern), hold the
switch in for 5 seconds. The module reboots with factory
defaults.
8) Serial Port Connectors. Connect the asynchronous
devices to the DECserver 900TM. The serial port connec-
tors are labeled 1 to 32.
LKG-8089-93I
8
4
13
2
7
5
6
You do not have to shut off the DEChub 900 MultiSwitch power when you install a module in the
hub. TheDECserver 900TM hasa built-in hot-swapswitch that allowsquick and easypower-on
installation and removal.
Install the module into the DEChub 900 MultiSwitch.
Installing the Module into a DEChub 900 MultiSwitch
4 DECserver 900TM
The release lever is
lifted and clicks
back into place
as the module
is seated
Mounting
Tab
LKG–8092-93I
a. Check the Hub Manager Status Display to ensure that there is
adequate power in the DEChub 900 MultiSwitch to accommodate
this module’s power rating. You may have to add another
power supply to the DEChub 900 MultiSwitch to accommodate
this module without affecting other modules already in the hub.
b. Locate an available DEChub slot.
c. Place the module’s bottom mounting tab into the mounting slot
on the hub.
d. Pivot the module on the mounting tab and align the connectors.
You hear the release lever click when the module is seated.
e. Press down on the release lever to ensure that it is locked.
f. Seating the module initiates the power up sequence and
self-test within 10 seconds if the available DEChub power is
sufficient. Read the Hub Manager Status Display for the
module status and power consumption.
Verify power.
Installing the Module in a DEChub 900 MultiSwitch (continued)
DECserver 900TM 5
a. With power on in the DEChub, verify
that the Power LED is on.
b. Verify that the Module OK LED
remains on after the module
completes self-test.
Connect the port cables to any
available port connector on the module.
Connect the port cables.
LKG–8091-93I
LKG–8090-93I
Module installation is complete.
Notes:
Port 1 by default may be used as a
console port.
The DECserver 900TM does not sup-
port the out-of-band management
(OBM) port or the setup port on the
DEChub ONE. No devices should be
connected to these ports.
Installing Flash RAM
6 DECserver 900TM
LKG–8091-93I
If you using a Flash RAM card for loading the operational software, perform the following:
a. The Digital label should be on the same side as the DECserver 900TM logo on
the front panel of the module.
b. Whenproperlyinserted, the FlashRAMcard protrudes fromthefrontpanel about 1/4inch.
The Flash RAM card is keyed and cannot be inserted improperly.
TheFlashRAMcardcanbehotswappedandmaybeinsertedorremovedatanytime. Ifyouareboot-
ing from the Flash RAM card, insert it before powering the module or during the self-test phase.
Once you boot the DECserver 900TM, the card may be left in place or removed.
Insert the Flash RAM card into the Flash RAM slot on the front of the module.
Removing the Module from the DEChub 900 MultiSwitch
DECserver 900TM 7
Remove the module from the DEChub.
Disconnect the port connector cables from the module.
a. Lift the release lever on top of the
hub slot.
b. Pivot the module back on its bottom
mounting tab until it disengages from
the hub.
Mounting
Tab
LKG–8098-93I
Lift
release
lever
Cabling
8DECserver 900TM
Table 1 shows the maximum cable lengths for a number of data rates using DECserver
900TM supported line protocols.
For more information about cabling and configuring of local area networks (LANs) and using
DECconnect system products, refer to the
DECconnect System Planning and Configuration
Guide
.
" ! !
1For able type H8245ĆA or H8246ĆB, 24 AWG, 4 pair, twisted pair.
EIA-432-A/V1.0 4.8 K (1600 ft)
9.6 K (900 ft)
19.2 K (500 ft)
38.4 K (280 ft)
57.6 K (100 ft)
115.2 K
(200 ft)
(40 ft)
500 m
280 m
150 m
85 m
30 m
12 m
DEC 423 9.6 K 900 m (3000 ft)
19.2 K
38.4 K
300 m (1000 ft)
150 m (500 ft)
60 m57.6 K
115.2 K 30 m (100 ft)
EIA-232-E/V.28 9.6 K
19.2 K
38.4 K
57.6 K
115.2 K
(200 ft)60 m
30 m (100 ft)
15 m (50 ft)
6 m (20 ft)
3 m (10 ft)
Cabling (continued)
DECserver 900TM 9
Ta le 2 descri es the ca le connections that are compati le with the DECserver 900TM
Ethernet and serial line connectors. Wiring diagrams of individual ca les are shown on
page 11.
H8584ĆAC MP8 to MMJ adapter Use this adapter to convert a serial port to
a DECserver 300 terminal server configuĆ
ration.
Use this office ca le to connect from the
6Ćpin MMJ port of a terminal or printer to
the 8Ćpin MJ faceplate data connector.
The BN24H is configured with one 6Ćpin
modified modular plug, one standard
8Ćpin plug, and crossover wiring.
BN24H MP8 to MP6 office ca le
H8585ĆAB1 MJ8 to DB25 (male)
modem adapter
H8585ĆAC1MJ8 to DB25 (male)
modem adapter
BN25G MP8 to MP8 equipment ca le Use this ca le as either a patch cord or
office ca le. It is configured with stanĆ
dard 8Ćpin modular plugs, which connect
four unshielded twisted pairs pinĆtoĆpin.
1Adapters H8585ĆAB and H8585ĆAC are not for connection to pu lic works in Sweden, Germany, or Japan.
H8585ĆAA MJ8 to DB9 (female)
nullĆmodem adapter
Use this adapter with the BN25G ca le to
convert the DECserver 900TM connector to
the DB9 connector for ca ling to PC asynchĆ
ronous ports.
Use this adapter with the BN25G ca le to
connect lowĆspeed modems to the DECservĆ
er 900TM.
Before connecting cables to the DECserver 900TM ports, you must verify supported modem
signals with the person managing the DECserver 900TM. This information is necessary to
determine what cables to use. For more information on the signals, refer to the
Network
Access Server Management
manual.
Use this adapter with the BN25G ca le to
connect highĆspeed modems to the DECĆ
server 900TM.
10 DECserver 900TM
The DECserver 900TM uses an MJ8 connector on the serial ports, and can be configured by
the software to support the pin signals indicated in Table 3.
123 567 84
RXD GND RXD TXD GND
CTS
RI DSRS
TXD DTR
DSR
CTS or RI
(Selected by
soft are)
RTS or DSRS DSR or DCD
RTS
DCD
Table 3 DECserver 900TM Serial Line Ports
Signal Name
Soft are Default1
Soft are Alternative1
1To change default values, refer to the
Network Access Server Management
manual.
PIN 1 8
RXD GND
RXD GND
RXD
RXD
TXD GND
TXD GND
TXD
TXD
DTR
DTR
(Selected by
soft are)
(Selected by
soft are)
Cabling (continued)
Pins
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