PictureTel Concorde 4500 User manual

Concorde•4500
Servicing Guide

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Copyright  1996: PictureTel Corporation—Printed in U.S.A.
PictureTel Corporation, 100 Minuteman Road, Andover, MA 01810
Telephone number: 508-292-5000
PictureTel is a registered trademark of PictureTel Corporation. The PictureTel logo, Concorde, PowerCam,
PowerMic, Look-At-Me-Button, LAMB, WorldCart, QuickPad, SG3, SG4, PT724, M-8000, GroupShare, and
Link-64E are trademarks of PictureTel Corporation.
Bose is a registered trademark of Bose Corporation.
VPN is a registered trademark of Sprint.
The information contained in this document is subject to change without notice. PictureTel assumes no
responsibility for technical or editorial errors or omissions that may appear in this document or for the use of
this material. Nor does PictureTel make any commitment to update the information contained in this
document. This document contains proprietary information which is protected by copyright.All rights
reserved. No part of this document may be photocopied or reproduced in any form without the prior written
consent of PictureTel Corporation.
Edition: 800-0631-01/A
Customer order number: DOC-S4500-SERV
Note: In this document, the term “monitor” is used to refer to the NTSC or PAL television (TV) broadcast
receiver that is part of the Concorde•4500 system. These receivers are governed by different regulations
than computer monitors.
The PictureTel Concorde•4500 complies with EEC Directives 89/336/EEC, 93/68/EEC and European
standards EN 55022B, EN 50082-1, and EN 60950. Consequently, the Concorde•4500 is eligible to display
the following marking:
CC168 X

Bescheinigung Des Herstellers/Importeurs
Hiermit wird bescheinigt, daß das Concorde•4500 in Übereinstimmung mit den Bestimmungen
der Vfg 1046/1984 funkenstört ist.
Der Deutschen Bundespost wurde das Inverkehrbringen dieses Geräts angezeigt und die Berechtigung zur
Überprüfung der Serie auf Einhaltung der Bestimmungen eingeräumt. Dieses Gerät wurde sowohl einzeln
als auch in einer Anlage, die dem normalen Anwendungsfall entspricht, auf die Einhaltung der
Funkentstörbestimmungen geprüft. Es ist jedoch möglich, daß die Funkentstörbestimmungen unter
ungünstigen Umständen bei anderen Gerätekombinationen nicht eingehalten werden. Für die Einhaltung
der Funkentstörbestimmungen der gesamten Anlage, in der dieses Gerät betrieben wird, ist der Betreiber
verantwortlich.
Warning: Changes or modifications to this unit not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
This equipment has been tested and found to comply with the limits for a ClassAdigital device, pursuant
to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed, operated, and maintained in
accordance with PictureTel Corporation guides and manuals, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful interference
in which case the user will be required to correct the interference at his own expense.
Shielded cables must be used with this unit to ensure compliance with the Class A FCC limits.

Notice to Users of Public DATAPHONE

Digital Service
The following instructions are provided to ensure that you comply with FCC Rules, Part 68.
1. All direct connections to DDS lines must be made through standard plugs and jacks furnished by the
telephone company. No connections can be made to party lines or coin lines. Before connecting your
unit, you must do the following:
a. Tell your local telephone company that you have an FCC registered device and that you wish to
connect to the company’s line. Provide them with the 14-digit FCC registration number listed on the
device’s label. They will also need to know the facility interface code and service code to connect
thenecessaryservice. Foryourunit, thefacilityinterfacecode is04DU5-56for 56kbpsservice.The
service code is 6.0Y.
b. Inform the local telephone company of the jack arrangement you want to use, which is RJ-48S.
c. Connectthechannelserviceunit(CSU)withtheappropriatecable afterthetelephonecompanyhas
installed the requested jack.
2. Ifthe unit appearsto bemalfunctioning, itshouldbe disconnectedfrom thetelephone line untilyou learn
if your equipment or the telephone line is the source of the trouble. If your equipment needs repair, it
should not be reconnected until it is repaired.
3. The CSU is designed to prevent harm to the DDS network. If the telephone company finds that the
equipment exceeds tolerance parameters, the telephone company can temporarily disconnect service,
although they will attempt to give you advance notice if possible.
4. UnderFCCRules,no customerisauthorizedtorepair thisequipment.Thisrestrictionappliesregardless
of whether the equipment is in or out of warranty.
5. If the telephone company alters their equipment or operations in a manner that will affect use of this
device, they must give you advance warning so as to give you the opportunity for uninterrupted service.
You will be advised of your right to file a complaint with the FCC.
6. In the event of equipment malfunction, all repairs should be performed by PictureTel Corporation or an
authorized agent. It is the responsibility of the users requiring service to report the need for service to
our company or to one of our authorized agents.
Note: It is illegal to export a
Concorde•4500 system that contains the encryption option from the United
States without approval from the United States Department of State. See your PictureTel sales
representative for details.

Notice to Canadian Users
This digital apparatus does not exceed the ClassAlimits for radio noise emissions from digital apparatus set
out in the Radio Interference Regulations of the Canadian Department of Communications (DOC).
Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites applicables aux
appareils numériques de la classAprescrites dans le Réglement sur le brouillage radioélectrique édicté par
le ministère des Communications du Canada.
The Canadian Department of Communications label identifies certified equipment. This certification means
that the equipment meets certain telecommunications network protective, operational, and safety
requirements. The Department does not guarantee the equipment will operate to the user’s satisfaction.
Before installing this equipment, users should ensure that it is permissible to be connected to the facilities of
the local telecommunications company. The equipment must also be installed using an acceptable method
of connection. In some cases, the company’s inside wiring associated with a single line individual service
may be extended by means of a certified connector assembly (telephone extension cord). The customer
should be aware that compliance with the above conditions may not prevent degradation of service in some
situations. Repairs to certified equipment should be made by an authorized Canadian maintenance facility
designated by the supplier. Any repairs or alterations made by the user to this equipment, or equipment
malfunctions, may give the telecommunications company cause to request the user to disconnect the
equipment.Users shouldensure,for theirownprotection, thattheelectrical groundconnections ofthepower
utility, telephone lines, and internal metallic water pipe system, if present, are connected together. This
precaution may be particularly important in rural areas.
DOC Load Number (LN) = 6
Caution: Users should not attempt to make such connections themselves, but should contact the
appropriate electric inspection authority, or electrician, as appropriate.
FCC Part 68 Notice (U.S.)
The Load Number (LN) assigned to each terminal device denotes the percentage of the total load to be
connectedto atelephone loopwhich isused bythe device,to preventoverloading.The terminationon aloop
mayconsist of anycombination ofdevices subject onlyto therequirementthat thetotal of theLoad Numbers
of all the devices does not exceed 100.
Ringer Equivalence Number (REN) = .6B

ConnectionTo United Kingdom Telecommunications Network
The PictureTel Concorde•4500 (if applicable) is approved to connect to the following United Kingdom (UK)
Public Telecommunications Operator (PTO) network services:
❑
Indirect connection to PTO-provided digital switched and point-to-point services through suitable
approved branch systems.
This includes the following types of connections:
❑
Indirect connection to basic rate ISDN services (for example, British Telecom’s ISDN2 service) through
approved terminal adaptors, multiplexers, or PABXs.
❑ Indirect connection to digital leased lines (for example, British Telecom’s Kilostream and Megastream
services) through approved equipment, such as multiplexers or PABXs.
The Approval Number is: NS/3832/1/M/602676
The Concorde•4500 as approved above is comprised of the following elements:
❑
Electronics module
❑
Keypad
❑
Line-in microphones
❑
Microphones
❑
X.21 (V.11) connecting cables
All other equipment shipped as part of a Concorde•4500 (for example, cameras or monitors) is approved to
connect indirectly to the UK PTO networks when connected through the Concorde•4500 electronics module
under the terms of General Approval Number NS/G/1234/J/100003.
Warning: The Concorde•4500 must not be connected directly to any UK PTO provided services.

Contents
vii
About This Guide ............................................................................................................................ xxi
Chapter 1
Concorde¥4500 System Overview
Introducing the Concorde¥4500 ................................................................................................... 1-1
Concorde¥4500 System Block Diagram....................................................................................... 1-3
Electronics Module ......................................................................................................................... 1-6
Software Cartridge ................................................................................................................ 1-8
Power Supply......................................................................................................................... 1-8
Fans........................................................................................................................................ 1-11
Monitors ......................................................................................................................................... 1-12
Cameras.......................................................................................................................................... 1-12
PowerCam100 ...................................................................................................................... 1-12
Auxiliary Camera ................................................................................................................ 1-13
Document Camera .............................................................................................................. 1-14
Microphones .................................................................................................................................. 1-14
Lapel Microphone ............................................................................................................... 1-16
Tabletop Microphone.......................................................................................................... 1-16
Keypads.......................................................................................................................................... 1-16
Wireless Keypad.................................................................................................................. 1-16
QuickPad .............................................................................................................................. 1-17
Wired Keypad...................................................................................................................... 1-19
Look-At-Me-Button ...................................................................................................................... 1-19
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Chapter 2
Understanding the Electronics Module
Backplane..........................................................................................................................................2-1
Communications Board..................................................................................................................2-9
Control Ports A and B ...........................................................................................................2-9
Video Board....................................................................................................................................2-11
Graphics Daughter Board...................................................................................................2-12
Audio Board ...................................................................................................................................2-14
Telephone Interface Daughter Board................................................................................2-16
Data Interface Board .....................................................................................................................2-18
Modem Control Signals................................................................................................................2-21
Chapter 3
Network Interfaces
Concorde¥4500 Network Interfaces .............................................................................................3-2
X.21 Network Interface .........................................................................................................3-4
Switched-56 Network Interface ...........................................................................................3-5
V.35 Network Interface .........................................................................................................3-6
RS-449 Network Interface .....................................................................................................3-7
V.25 bis Network Interface ...................................................................................................3-8
Call Setup Using Nondialed and Dialed Devices.......................................................................3-9
Call Setup Using the RS-366A Dialing Procedure.............................................................3-9
V.35, RS-449, and Switched-56 Call Setup with Auto Answering .........................................3-12
Dialed Call Setup with Auto Answering..........................................................................3-12
Nondialed Call Setup with Auto Answering ..................................................................3-13
Call Setup with Manual Answering ...........................................................................................3-13
V.35, RS-449, and Switched-56 Call Disconnect........................................................................3-13
X.21 Call Setup and Disconnect...................................................................................................3-14
Placing a Dialed Call with X.21 Data Circuit-Terminating Equipment (DCE)...........3-14
Receiving a Dialed Call from an X.21 DCE ......................................................................3-17
Placing a Nondialed Call with an X.21 DCE....................................................................3-19

ix
Receiving a Nondialed Call from an X.21 DCE .............................................................. 3-20
V.25 bis Call Setup and Disconnect............................................................................................ 3-21
Placing a Dialed Call with a V.25 bis Interface ............................................................... 3-22
Receiving a Dialed Call from a V.25 bis Data Unit......................................................... 3-23
Dialing from a V.25 bis Data Unit Keypad...................................................................... 3-25
Throughput Limitations............................................................................................................... 3-26
Chapter 4
Troubleshooting
Safety Requirements....................................................................................................................... 4-1
Required Tools and Test Equipment............................................................................................ 4-2
Diagnostic Procedures.................................................................................................................... 4-3
Verifying Power-On ....................................................................................................................... 4-4
Pass-Fail Status ...................................................................................................................... 4-4
Fault Log ................................................................................................................................. 4-5
Board Replacements.............................................................................................................. 4-6
Basic Troubleshooting Procedures ............................................................................................... 4-6
No System Power .................................................................................................................. 4-7
No Display on the Monitor .................................................................................................. 4-9
No Audio .............................................................................................................................. 4-11
Network or Communications Failure .............................................................................. 4-13
Peripheral Failure ................................................................................................................ 4-16
Warning Messages........................................................................................................................ 4-21
Verifying Electrical Voltage......................................................................................................... 4-24
Installation Checklist .................................................................................................................... 4-26
Technical Tips................................................................................................................................ 4-26
Isolating a Problem with Port 1 and Port 2...................................................................... 4-30
Loopback Tests.............................................................................................................................. 4-31
Running the Local Video/Audio Loopback Test ........................................................... 4-34
Running the Local Channel Loopback Test..................................................................... 4-35
Running the Remote Video/Audio Loopback Test ....................................................... 4-36
Running the Remote CSU Loopback Test........................................................................ 4-37

x
Chapter 5
Ordering and Returning Components
Ordering Components....................................................................................................................5-1
Field Replaceable Units ..................................................................................................................5-1
Returning Components ..................................................................................................................5-5
Appendix A
Concorde¥4500 Specifications
Physical Specifications...................................................................................................................A-1
Electrical Specifications .................................................................................................................A-2
Environmental Specifications .......................................................................................................A-3
Video Specifications .......................................................................................................................A-4
Audio Specifications ......................................................................................................................A-6
Network Specifications..................................................................................................................A-6
Appendix B
Pin Assignments
PowerCam 100 Cable ..................................................................................................................... B-1
Document Camera Cable .............................................................................................................. B-3
Wired Keypad Interface Connector ............................................................................................. B-4
PowerMic 100 Cable....................................................................................................................... B-5
Lapel and Tabletop Microphone Connectors............................................................................. B-6
PC Serial Data Cable ...................................................................................................................... B-6
Switched-56 Network
Interface............................................................................................................................................ B-8
V.35 Network Interface.................................................................................................................. B-9
RS-449 Network Interface............................................................................................................ B-11
X.21 Network Interface................................................................................................................ B-13
V.25 bis Network Interface.......................................................................................................... B-15
RS-366A Network Dialing Port .................................................................................................. B-18

xi
Appendix C
Electronics Module Connections
Network Interface Connections....................................................................................................C-1
Audio and Video Board Connections ..........................................................................................C-5
Audio Board Connections....................................................................................................C-6
Video Board Connections.....................................................................................................C-8
Audio and Video Board Cabling.......................................................................................C-10
Appendix D
Control and Data Port Communications
Word Length and Parity ............................................................................................................... D-1
Synchronous and Asynchronous Communication................................................................... D-2
Baud Rate ........................................................................................................................................ D-3
Data Port End-to-End Delay......................................................................................................... D-4
Response Times and Buffer Space............................................................................................... D-4
Flow Control Between DTE Devices........................................................................................... D-5
Hardware Flow Control ...................................................................................................... D-6
Software Flow Control......................................................................................................... D-8
Appendix E
Connecting a VCR
Connecting One VCR ..................................................................................................................... E-1
Connecting Two VCRs...................................................................................................................E-3
Connecting a Stereo VCR...............................................................................................................E-5
Appendix F
Frequently Asked Questions
Algorithms ....................................................................................................................................... F-2
Peripherals ....................................................................................................................................... F-3
Miscellaneous .................................................................................................................................. F-3

xii
Appendix G
Important Information
..................................................................................................................G-1
Glossary ................................................................................................................................. Glossary-1
Index .............................................................................................................................................Index-1

Figures
xiii
Figure 1-1: Concorde¥4500 System............................................................................................. 1-3
Figure 1-2: Concorde¥4500 System Block Diagram.................................................................. 1-4
Figure 1-2: Concorde¥4500 System Block Diagram (continued) ............................................ 1-5
Figure 1-3: WorldCart and the Electronics Module.................................................................. 1-6
Figure 1-4: Concorde¥4500 Functional Block Diagram ........................................................... 1-7
Figure 1-5: Software Cartridge..................................................................................................... 1-8
Figure 1-6: Power Supply ............................................................................................................. 1-9
Figure 1-7: Concorde¥4500 Fans ............................................................................................... 1-11
Figure 1-8: PowerCam 100 Camera........................................................................................... 1-12
Figure 1-9: PowerMic Microphone............................................................................................ 1-15
Figure 1-10: Wireless Keypad ...................................................................................................... 1-17
Figure 1-11: QuickPad................................................................................................................... 1-18
Figure 1-12: Look-At-Me-Button ................................................................................................. 1-19
Figure 2-1: Voltage Test Points on the Backplane..................................................................... 2-3
Figure 2-2: System Boards ............................................................................................................ 2-4
Figure 2-3: HAP-6 Board............................................................................................................... 2-7
Figure 2-4: HAP-4 Board............................................................................................................... 2-8
Figure 2-5: Communications Board .......................................................................................... 2-10
Figure 2-6: Video Board .............................................................................................................. 2-12
Figure 2-7: Graphics Daughter Board....................................................................................... 2-14
Figure 2-8: Audio Board ............................................................................................................. 2-16
Figure 2-9: Data Interface Board................................................................................................ 2-20
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Figure 3-1: Electronics Module and Network Boards...............................................................3-3
Figure 3-2: RS-366A Call Setup (Part 1).....................................................................................3-10
Figure 3-2: RS-366A Call Setup (Part 2).....................................................................................3-11
Figure 3-3: X.21 Dialed Outgoing Call ......................................................................................3-16
Figure 3-4: X.21 Dialed Incoming Call ......................................................................................3-18
Figure 3-5: X.21 Nondialed Outgoing Call ...............................................................................3-19
Figure 3-6: X.21 Nondialed Incoming Call ...............................................................................3-21
Figure 3-7: V.25 bis Dialed Outgoing Call ................................................................................3-23
Figure 3-8: V.25 bis Dialed Incoming Call ................................................................................3-24
Figure 3-9: V.25 bis Dialing from the Data Unit Keypad........................................................3-25
Figure 4-1: System Power-On Procedure....................................................................................4-8
Figure 4-2: DIP Switches for Wireless Keypad ........................................................................4-20
Figure 4-3: Near-End Tests Menu ..............................................................................................4-32
Figure 4-4: Far-End Tests Menu .................................................................................................4-33
Figure 4-5: Local Video/Audio Loopback Test .......................................................................4-35
Figure 4-6: Local Channel Loopback Test.................................................................................4-36
Figure 4-7: Remote Video/Audio Loopback Test ...................................................................4-36
Figure 4-8: Remote CSU Loopback Test....................................................................................4-37
Figure B-1: 8-Pin Mini DIN Connector ....................................................................................... B-2
Figure B-2: Document Camera Cables........................................................................................ B-3
Figure B-3: RJ-11 Jack .................................................................................................................... B-4
Figure B-4: 7-Pin Mini DIN Connector ....................................................................................... B-6
Figure B-5: RJ-48S Interface Jack.................................................................................................. B-8
Figure B-6: V.35 Interface DC-37 Connector on the Electronics Module............................... B-9
Figure B-7: Adapter Cable and Connection Panel for a V.35 Network Interface............... B-11
Figure B-8: EIA RS-449 Interface DC-37 Connector on the Electronics Module................. B-11
Figure B-9: X.21 Interface Connector on the Electronics Module ......................................... B-15
Figure B-10: Cable Between the V.25 bis Network Connection Panel
and a Data Unit........................................................................................................ B-16
Figure C-2: Back Panel for V.35 (or RS-449) Connection..........................................................C-3
Figure C-3: Back Panel for X.21 (or V.25 bis) Connection ........................................................ C-4
Figure C-4: Connections to the Audio and Video Boards........................................................C-5

xv
Figure C-5: Cabling for the Audio and Video Boards.............................................................C-10
Figure D-1: Asynchronous Data Format Examples .................................................................. D-2
Figure D-2: Synchronous and Asynchronous Data Patterns................................................... D-3
Figure D-3: Typical Devices Involved in End-to-End Communication................................. D-5
Figure D-4: Typical End-to-End Data with Flow Control........................................................ D-7
Figure E-1: Connecting a VCR......................................................................................................E-2
Figure E-2: Connecting Two VCRs.............................................................................................. E-4
Figure E-3: Connecting a Stereo VCR..........................................................................................E-5

Tables
xvii
Table 1-1: Power Supply Input .................................................................................................. 1-9
Table 1-2: Power Supply Output Voltages and Currents .................................................... 1-10
Table 1-3: PowerCam 100 Features.......................................................................................... 1-13
Table 1-4: Document Camera Features................................................................................... 1-14
Table 1-5: PowerMic Features .................................................................................................. 1-15
Table 1-6: Physical Specifications for the Wireless Keypad................................................. 1-17
Table 1-7: Physical Specifications for the QuickPad ............................................................. 1-18
Table 1-8: Physical Specifications for the LAMB................................................................... 1-19
Table 2-1: Backplane Features .................................................................................................... 2-2
Table 2-2: System Board Locations............................................................................................ 2-4
Table 2-3: Functions of the AP Boards ...................................................................................... 2-6
Table 2-4: Control Port Data Rates ............................................................................................ 2-9
Table 2-5: Telephone Interface Board...................................................................................... 2-17
Table 2-6: Data Interface Port Speeds...................................................................................... 2-19
Table 3-1: Signal Flow for the Switched-56 Network Interface Board ................................. 3-5
Table 3-2: RS-449 Interface Maximum Cable Lengths............................................................ 3-8
Table 3-3: Timeout Values ........................................................................................................ 3-12
Table 3-4: Bandwidth Limitations ........................................................................................... 3-26
Table 4-1: System Fault Codes ................................................................................................... 4-5
Table 4-2: No System Power Checklist ..................................................................................... 4-7
Table 4-3: No Display on the Monitor Checklist ..................................................................... 4-9
Table 4-4: No Audio Checklist ................................................................................................. 4-11
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Table 4-5: Network or Communications Failure Checklist ..................................................4-13
Table 4-6: Peripheral Failure Checklist....................................................................................4-16
Table 4-7: System Warning Messages......................................................................................4-21
Table 4-8: Installation Checklist................................................................................................4-26
Table 4-9: Technical Tips ...........................................................................................................4-26
Table 4-10: Loopback Tests .........................................................................................................4-33
Table 5-1: List of Field Replaceable Units .................................................................................5-1
Table A-1: Physical Specifications..............................................................................................A-1
Table A-2: Electrical Specifications ............................................................................................A-2
Table A-3: Environmental Specifications ..................................................................................A-3
Table A-4: Video Specifications ..................................................................................................A-4
Table A-5: Audio Specifications .................................................................................................A-6
Table A-6: Network Specifications.............................................................................................A-6
Table B-1: Pin Assignments for the PowerCam 8-Pin Connector......................................... B-1
Table B-2: Pin Assignments for the RJ-11 Modular Jack Interface Connector .................... B-4
Table B-3: Pin Assignments for PowerMic Cable.................................................................... B-5
Table B-4: Pin Assignments for Lapel and Tabletop Microphone Connectors................... B-6
Table B-5: Pin Assignments for the PC Serial Data Cable...................................................... B-7
Table B-6: Pin Assignments for Four-Wire CSDC Interface Connector............................... B-8
Table B-7: Pin Assignments for V.35 Network Data Port
(DC-37 Male) Adapter Cable ................................................................................... B-9
Table B-8: Pin Assignments for EIA RS-449 Network Data Port
Using a Belden 9737 Cable ..................................................................................... B-12
Table B-9: Pin Assignments for EIA RS-449 Network Data Port
Using a Belden 9731 Cable ..................................................................................... B-13
Table B-10: Pin Assignments for X.21 Network Data Port..................................................... B-13
Table B-11: Pin Assignments for Signal Flow Between the
DA-15 and M-34 Connectors ................................................................................. B-16
Table B-12: Pin Assignments for RS-366A Network
Dialing Port .............................................................................................................. B-18
Table C-1: Audio Board Connections........................................................................................C-6
Table C-2: Video Board Connections......................................................................................... C-8
Table D-1: Summary of Supported Flow Control Methods ...................................................D-6

xix
Table D-2: Modem Control Signals ........................................................................................... D-8
Table F-1: Compression Induced Delay.................................................................................... F-2
Table G-1: Your Technical Support Information ..................................................................... G-2