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Related Manuals for Black Box Echo Series
Summary of Contents for Black Box Echo Series
- Page 1 Jan 97 / Version 1.1 Echo Mux X.21/V.11: MXU9070 Echo Mux V.35: MXU9076 Echo 2 Mbps Multiplexer TECHNICAL: (0118) 965 6000 SALES: (0118) 965 5100 FAX: (0118) 965 5001 ADDRESS: 464 Basingstoke Road, Reading, Berkshire RG2 0QN WEB: www.blackbox.co.uk...
- Page 2 How To Contact your Local Black Box Italy: Australia: Black Box Italia S.P.A Black Box Catalog Australia PTY LTD Tel: 0227400280 Tel: 0398797100 Fax: 0227400219 Fax: 0398702955 Web Site: www.blackbox Deutschland: Brazil: Black Box Deutschland Black Box Do Brasil. Tel: 0811/5541-0...
- Page 3 Echo 2 Mbps Multiplexer ECHO E1 2 Megabit Multiplexer range User Manual WARNING - BEFORE INSTALLATION, PLEASE REFER TO SAFETY INSTRUCTIONS IN APPENDIX A, AND EMC INSTRUCTIONS IN APPENDIX C Certified Compliant in the EC, when fitted in accordance with the installation instructions, against the following directives/standards: Low Voltage Directive (73/23/EEC and amendment 93/68/EEC) EN60950...
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Page 4: Table Of Contents
Echo 2 Mbps Multiplexer Contents Introduction ..............................6 Functional overview ........................6 Typical Applications ........................7 Use and Configuration ..........................9 Data Channel Connection......................9 Default Channel Setup........................9 Changing the Configuration ......................9 Supervisor Terminal requirements ....................9 Supervisor Terminal Emulations ....................10 General Set-Up Display Layout....................11 General Keyboard Conventions....................11 Cursor Movement ......................12 Parameter changing.....................12 Accepting all changes and Updating the configuration ..........12... - Page 5 Echo 2 Mbps Multiplexer Composite Link Parameters......................24 Back to Back demonstration connection ...................25 Internal Clock (other site in loop) .................25 Using an external Clock reference ....................26 External Channel Clock ....................26 External Reference Clock ....................26 Through Clock (Master from D&I link)................27 Troubleshooting .............................28 Front Panel LEDs........................28 Diagnostics &...
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Page 6: Introduction
Echo 2 Mbps Multiplexer Introduction The Echo is an E1 time division multiplexer, operating at 2.048 Mbps, supporting up to 4 X.21/V.11 data channels, and an additional (optional) E1 drop and insert link. The unit is easily configured from either end of the link, using a terminal or a PC running a terminal emulation package. -
Page 7: Typical Applications
Echo 2 Mbps Multiplexer Typical Applications The Echo may be used to provide up to 4 Nx64K X.21/V.11 channel connections (at any multiple of 64K) between two sites, using a G.703 2 Megabit/Second data link, as shown below: TECHNICAL: 0118 931 2233... - Page 8 Echo 2 Mbps Multiplexer It is also possible to connect two systems back to back directly in this manner, using an appropriate cable. This configuration is described on page 25. Where the Echo is to be used to provide unused PABX (or bridge) bandwidth to Nx64 X.21/V.11 ports, the optional Drop and Insert card is used as follows: The Echo is set so that the slots used by the PABX are passed through to the main G.703 link transparently.
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Page 9: Use And Configuration
Echo 2 Mbps Multiplexer Use and Configuration This section covers connection and set-up of the channel data ports. The composite port is covered in the installation section of this manual. Data Channel Connection Peripherals are connected to the X.21/V.11 15 way 'D'-type connectors configured DCE and numbered 1 to 4 at the rear of the multiplexer. -
Page 10: Supervisor Terminal Emulations
Echo 2 Mbps Multiplexer Supervisor Terminal Emulations Several terminal emulations are supported by the Echo. When connection is made between the terminal or PC and the rear panel port labelled SUPERVISOR, the following screen will appear: Please select terminal type from the following: 1 = VT52 2 = VT100 3 = ADDSVP... -
Page 11: General Set-Up Display Layout
Echo 2 Mbps Multiplexer General Set-Up Display Layout There are three main areas on the supervisor set-up screen used to change parameters for the Echo: Upper left - System parameters (Mode, Clock Ref, Carrier, Idle Bandwidth, and Configure etc.). Upper right - Other display pages which may be selected, (Statistics etc.). -
Page 12: Cursor Movement
Echo 2 Mbps Multiplexer Cursor Movement The cursor symbol ">" is moved around the screen to the required field using the arrow keys. Parameter changing If it is possible to modify the field over which the cursor is placed, the message "Use <SPACEBAR>, <+>, <->"... -
Page 13: Nx64 Channel Configuration
Echo 2 Mbps Multiplexer Nx64 channel Configuration To change the Nx64 channel configuration, select the configuration screen (shown on page 10) by moving the cursor to the top line on the right hand area of the screen, next to 'Nx64 Channels:' and pressing ENTER or RETURN. - Page 14 Echo 2 Mbps Multiplexer Echo Channel Set-up Options PARAMETER CHOICES NOTES Rate Off, 64K ... 1984K in 64K steps. Channel data rate (calculated from time slot allocation set by user). NORMAL Normal RUN mode. Mode LOOP Set this to enable bi-lateral channel loopback.
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Page 15: Drop And Insert (D&I) Channel Operation
Echo 2 Mbps Multiplexer Note: If an external clock option is selected, unless the external device is synchronised to the main link clock, clock slips will inevitably occur, leading to data loss. Drop and Insert (D&I) channel operation The optional G.703 Drop and Insert channel allows connection of external G.703 equipment (eg. -
Page 16: Setting The System's Real-Time Clock
Echo 2 Mbps Multiplexer Setting the System's Real-Time Clock To change the system clock time, position the > cursor at the "Set Clock" field. The message 'Enter time and date (hh-mm-ss dd/mm/yy)' will appear at the bottom of the screen. The time should be entered following the format shown. -
Page 17: Viewing The Event Log
Echo 2 Mbps Multiplexer Each entry on a page represents a summary of link performance over 15 minutes of operation. The Current entry, is updated every 10 seconds with any errors identified in the preceding 10 seconds. To view additional entries not shown (if any) on the current screen page, move the cursor to the 'Period end' field, and use the Left and Right arrow keys. -
Page 18: Clearing The Event Log
Echo 2 Mbps Multiplexer The event log is very useful for diagnosing fault conditions. 2 MEGABIT E1 MULTIPLEXER V1.00 =============================== 15:45 16/09/96 ================================== Main Link (EUR) SYNCHRONISED Mode NORMAL Nx64 Channels Framing CRC4 D&I Channels : NOT FITTED Idle Bandwidth 1344K System Alarms : None... -
Page 19: Link Carrier Loss
Echo 2 Mbps Multiplexer The conditions which cause the alarm to operate may be selected from the System Alarms menu page (shown below). Each of the possible Alarm conditions may be set to any of the following actions: NO ACTION The events will not cause the relay contacts to operate, or the event to be logged. -
Page 20: Timeslot Mismatch
Echo 2 Mbps Multiplexer Timeslot Mismatch The configuration in the local unit does not match that in the remote unit. This would almost certainly lead to data errors on some channels. D&I Carrier Loss The Multiplexer cannot identify a valid synchronisation sequence (FAS, CRC4 etc) from the unit attached to the D&I port. -
Page 21: Link Ber High
Echo 2 Mbps Multiplexer For example: If 'D&I Remote alarms' are to be sent as remote alarms through the main multiplexer link, set: D&I Remote alarms : MAJOR at the remote site. At the local site, setting: Remote Alarm : MINOR will result in a MINOR alarm being generated locally when any remote alarm is active. -
Page 22: Echo Multiplexer Installation
Echo 2 Mbps Multiplexer Echo Multiplexer Installation BEFORE INSTALLATION, PLEASE REFER TO THE SAFETY WARNINGS IN APPENDIX A, APPROVALS REQUIREMENTS IN APPENDIX B, and EMC REQUIREMENTS IN APPENDIX C Supply Voltage & Connection A.C. 100 - 240V a.c. without adjustment. D.C. -
Page 23: Composite Interface Selection
Echo 2 Mbps Multiplexer Composite Interface Selection The required interface (European 120 Ohms RJ45 or UK 75 Ohms 2 x BNC), must be selected using the internal jumper link as described in the appendices, before connecting the equipment. The current interface type is reported on the main set-up screen as either UK or EUR as appropriate. -
Page 24: Composite Link Parameters
Echo 2 Mbps Multiplexer For EUROPEAN connection, un-screened RJ45 cables are suitable. The screen to chassis links must be fitted in the isolated position (LK1 = 1-2, LK2 = 1-2). The positions of the links LK1, LK2 and the UK/EUR selector are shown (fitted for European 120 Ohms) on the diagram shown above. -
Page 25: Back To Back Demonstration Connection
Echo 2 Mbps Multiplexer EXTERNAL Clock sourced from external clock connector. Must be accurate to 50ppm or better. External clock rate must be set on screen to match the reference used. Configuration LOCAL "Modified" appears if change REMOTE has been made. Back to Back demonstration connection For a simple demonstration, or local network use, two Echo Multiplexers may be connected 'back to back', using a cross over cable arrangement, one unit being set to internal clock... -
Page 26: Using An External Clock Reference
Echo 2 Mbps Multiplexer Using an external Clock reference A range of external clock reference options are available, and can be seen in the table above. An external clock BNC connector is available for connection of a TTL square wave with a stability of 50ppm or better. -
Page 27: Through Clock (Master From D&I Link)
Echo 2 Mbps Multiplexer Through Clock (Master from D&I link) In this example, the master clock is derived from the PABX which is connected to the D&I channel. TECHNICAL: 0118 931 2233... -
Page 28: Troubleshooting
Echo 2 Mbps Multiplexer Troubleshooting Front Panel LEDs On the front panel only the CARRIER LED should normally be lit. When the multiplexer is un-connected or has lost carrier, the CARRIER LED will flash slowly. A faster flash shows that CRC4 sync hunt mode has been entered. -
Page 29: Diagnostics & Loopbacks
Echo 2 Mbps Multiplexer Diagnostics & Loopbacks A number of debug options are available. They are described in the table on page 13. It is possible to loop back any channel bi-laterally (both locally and remotely), to allow data to be tested for proper operation. -
Page 30: Appendix A - Warnings
Echo 2 Mbps Multiplexer Appendix A - Warnings WARNING: THIS EQUIPMENT MUST EARTHED GROUNDED This equipment relies on the EARTH / GROUND connection to ensure safe operation such that the user and TELECOM Network are adequately protected. It must not under any circumstances be operated without an earth connection, which could nullify its approval for connection to a network. - Page 31 Echo 2 Mbps Multiplexer Warnung: Dieses Gerät Muß an einem Anschluß mit Schutzleiter betrieben werden. Zum sicheren Betrieb ist der Anschluß des Gerätes an Spannungsversorgungen mit Schutzleiter notwendig. Nur so kann optimaler Schutz für Bedienpersonal Übertragungseinrichtungen gewährleistet werden. Unter keinen Umständen darf dieses Gerät ohne Schutzleiter betrieben werden, da ansonsten die Zulassung für den Anschluß...
- Page 32 Echo 2 Mbps Multiplexer Mise en garde: Cet équipement doit être relié a la terre Cet équipement doit posséder une prise de terre de manière à ce que le réseau télécom et ses utilisateurs soient équitablement protégés. Tout manquement à cette obligation entraînerait l'annulation de l'autorisation de connexion a un réseau.
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Page 33: Appendix B - Approval
Echo 2 Mbps Multiplexer Appendix B - Approval Requirements DO NOT change any of the wording in this section unless you are absolutely certain about what you are doing. The entries and particular format are an approval requirement and any change may invalidate product approval. The Echo MULTIPLEXER carrying the BABT / CE168 assessment symbols and approval number, is approved for connection to the networks identified in this Appendix as follows: G.703... -
Page 34: Appendix C - Emc Requirements
This product relies on the use of screened cables for connection to the 15 way 'D-Type' ports. The cables must have the foil or braid screen connected effectively to the metal headshell to ensure continued compliance. The following headshells provide suitable screen connection and are available from Black Box: DB15 - FA033 DB25 - FA031 The diagram below illustrates an example of a suitable screen connection. -
Page 35: Mains Connection
Echo 2 Mbps Multiplexer Mains Connection The mains connection is internally filtered and requires no special consideration. To Ensure that adequate immunity is achieved: It is in the user's interest to ensure continued product immunity against mains born transients, and static discharge. To achieve this, it is important to ensure that equipment is effectively earthed. -
Page 36: Appendix D - Rear Panel Lay Out
Echo 2 Mbps Multiplexer Appendix D – Rear Panel Lay Out The layout of all ports on the rear panel of the Echo multiplexer is shown in the diagram below: SALES: 0118 965 5100... -
Page 37: Appendix E - Supervisor Port Pinout
Echo 2 Mbps Multiplexer Appendix E - Supervisor Port Pinout V.24 Supervisor Port Pinout (25 Way D Type Configured DCE) Ground Common 9600bps Operation: The multiplexer requires connections to TxD, RxD and Common only. The output signals CTS, DSR and DCD are provided for the terminal if required. -
Page 38: Appendix F - Composite Interface Pinouts
Echo 2 Mbps Multiplexer Appendix F - Composite Interface Pinouts Composite Interface Connections (EUROPE) Using 120 Ohm Balanced RJ45 Name Description Type at DTE - RJ45 Connector Female Input RX Pair Input Output TX Pair Output Shield Reference Shield Reference Notes: 5 way link strap must be fitted in EUR position (LK3) and not in UK position (LK4) LK1 and LK2 must both be fitted in position 1-2 (Isolated). - Page 39 Echo 2 Mbps Multiplexer Composite Interface Connections (UK) Using 75 Ohm Un-balanced BNC Name Description Type at DTE - BNC Connector Female Input Centre RX RX Pair Ground Outer RX Reference Output Centre TX TX Pair Ground Outer TX Reference Notes: 5 way link strap must be fitted in UK position (LK4) and not in EUR position (LK3).
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Page 40: Appendix G - Rj45 E1 Crossover Cable
Echo 2 Mbps Multiplexer Appendix G - RJ45 E1 Crossover Cable. RJ45 Crossover Cable (EUROPE) Using 120 Ohm Balanced RJ45 Name Description DTE2 - RJ45 DTE1 - RJ45 Male Male TxRxA TXRX Pair TxRxB RxTxA RXTX Pair RxTxB Shield Reference Shield Reference Notes: 5 way link strap must be fitted in EUR position (LK3) and not in UK position (LK4) -
Page 41: Appendix H - X.21/V.11 Data Channel Pinout
Echo 2 Mbps Multiplexer Appendix H - X.21/V.11 Data Channel Pinout X.21/V.11 Data Channels connectors 1 - 4 (15 Way DB25 Type Configured DCE) DATA CHANNEL CONNECTIONS: Name Description Type at DCE - DB15 Connector Female Protective Ground Signal Ground T(A) TxD a Input... -
Page 42: Appendix I - X.21/V.11 Network Crossover Cable
Echo 2 Mbps Multiplexer Appendix I - X.21/V.11 Network Crossover Cable 15 Way Multiplexer DCE to DCE or Network DCE ONWARD LINKING Crossover Cable MUX 15 Way Male V.11 15 Way Male Type at Network Connector Connector Connector (Normal Use) M3 Screws UNC 4/40 Screws SHIELD... -
Page 43: Appendix J - Alarms
Echo 2 Mbps Multiplexer Appendix J - Alarms The following pin connections may used when an external alarm indication is required. The 6 way DIN connector provides two sets of relay contacts for externally connected low voltage (SELV) equipment as follows: MAJOR/Minor Alarm Port pin connections 6 way Miniature DIN Function... -
Page 44: Appendix K - Echo Technical Specification
Echo 2 Mbps Multiplexer Appendix K - Echo Technical Specification E1 COMPOSITE LINK and DROP & INSERT (D&I) PORTS Link Ports: Echo Mux: 1 E1 port, Echo T-Mux: 2 E1 ports Compliance: G.703, G.704, G.706, I.431, G.823, PD7024, CTR12, EN41003, EN60950, EN55022, EN50082-1, BABT, CE (EMC, LVD, TTE) Interface: G.703 75 Ohm un-balanced (UK), 2 x BNC connectors (to PD7024)