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Blackbox MX864A Manual

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Stat-4, Stat-8, and Stat-24
CUSTOMER
Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)
FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746
SUPPORT
Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
INFORMATION
Web site: www.blackbox.com • E-mail: info@blackbox.com
MARCH 2004
MX864A
MX866A
MX868A

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  • Page 1 Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500) FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 SUPPORT Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 INFORMATION Web site: www.blackbox.com • E-mail: info@blackbox.com...
  • Page 2 FCC AND IC RFI STATEMENTS FEDERAL COMMUNICATIONS COMMISSION INDUSTRY CANADA RADIO FREQUENCY INTERFERENCE STATEMENTS This equipment generates, uses, and can radiate radio-frequency energy, and if not installed and used properly, that is, in strict accordance with the manufacturer’s instructions, may cause interference to radio communication.
  • Page 3 STAT-4, STAT-8, AND STAT-24 INSTRUCCIONES DE SEGURIDAD (Normas Oficiales Mexicanas Electrical Safety Statement) 1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de que el aparato eléctrico sea operado. 2. Las instrucciones de seguridad y operación deberán ser guardadas para referencia futura. 3.
  • Page 4 TRADEMARKS USED IN THIS MANUAL TRADEMARKS USED IN THIS MANUAL Any trademarks mentioned in this manual are acknowledged to be the property of the trademark owners.

  • Page 5: Table Of Contents

    STAT-4, STAT-8, AND STAT-24 Contents Chapter Page Specifications ..............6 Introduction .
  • Page 6 CONTENTS Chapter Page Diagnostics ..............46 General .

  • Page 7: Specifications

    MX868A: Channel: (24) RJ-45, (1) DB25 male (DTE) Indicators: MX864A: (9) LEDs: (1) Power, (4) Port numbered 1 through 4, (1) Sync, (1) Err, (1) OVF, (1) Test; MX866A: (13) LEDs: (1) Power, (8) Port numbered 1 through 8, (1) Sync, (1) Err, (1) OVF, (1) Test;...

  • Page 8: Introduction

    2.2 Available Models The following models are available: Model Number Name Ports MX864A Stat-4 (4) RJ-45, (1) DB25 MX866A Stat-8 (8) RJ-45, (1) DB25 MX868A...

  • Page 9: Typical Applications

    STAT-4, STAT-8, AND STAT-24 2.3 Typical Applications Figure 2-1 shows a typical application that uses a Stat-24 to multiplex the data lines used to connect a large number of asynchronous terminals (up to 24) to the host computer. The data lines use various data rates. The Stat-24 statistically multiplexes sub-channel data to form a composite data stream having a rate much smaller than the arithmetical sum of the individual sub-channel rates.

  • Page 10: Installation

    CHAPTER 3: Installation 3. Installation 3.1 General The Stat-4, Stat-8, and Stat-24 are delivered completely assembled. Install each mux on top of a bench or shelf, or optionally mount it in a 19" rack (via rack adapter kits). Mechanical and electrical installation procedures appear in the following paragraphs.

  • Page 11: How To Set The Jumpers

    STAT-4, STAT-8, AND STAT-24 When delivered, the non-volatile memory of the stat mux is already loaded with the default configuration, so the stat mux is configured in accordance with the factory settings. You may have to select again the default configuration (INIT) again in the following cases: •...
  • Page 12 CHAPTER 3: Installation 2. Refer to Figure 3-1 or 3-2 and identify jumper locations and settings. Change the settings as required. 3. Reinstall the stat mux cover, and install and tighten the screws. Figure 3-1. Stat-4 and Stat-8 internal jumpers. Figure 3-2.

  • Page 13: Installing The Mux In 19" Racks

    STAT-4, STAT-8, AND STAT-24 3.5 Installing the Mux in 19" Racks Install the stat muxes in 19" racks. Rack height is 1U (1.75"). The width of the Stat-8 is slightly less than half of the available mounting width, and Stat-24 width is equal to the available width. Two rack adapter kits are available for the Stat-8;...

  • Page 14: Installing Two Stat-8 Muxes

    CHAPTER 3: Installation 3.5.2 I -8 M NSTALLING UXES The adapter kit includes two adapter brackets (and various hardware) for attaching the two muxes side by side. Refer to Figure 3-4 and follow these steps: 1. Remove the cover from the mux that will be on the right-hand side of the rack. 2.
  • Page 15 STAT-4, STAT-8, AND STAT-24 Figure 3-4. Installing two Stat-8 muxes side by side.

  • Page 16: Installing The Stat-24

    CHAPTER 3: Installation 3.5.3 I NSTALLING THE The rack adapter kit for Stat-24 rack installation includes two short brackets. The brackets are fastened via screws to the two side walls of the case, as shown in Figure 3-5. To prepare the mux for rack installation, attach the two brackets to the side walls of the mux.

  • Page 17: Power Connection

    STAT-4, STAT-8, AND STAT-24 3.6.4 P OWER ONNECTION The Stat-4, Stat-8, and Stat-24 have standard IEC three-prong connectors with an integral fuse. 3.7 Powering On the Mux Connect the power cable between the AC mains connector on the rear panel and a standard grounded AC outlet, then set the rear-panel POWER switch to On.
  • Page 18 CHAPTER 3: Installation Table 3-1. STM system parameters and factory settings. Parameter Function Available Factory Selections Setting PASSWORD Controls access Any two characters to configuration except those used (capital as X-ON and X-OFF letters) control characters X-ON CONTROL When using 11H (DC1) CHARACTER software flow...
  • Page 19 STAT-4, STAT-8, AND STAT-24 Table 3-2. Sub-channel parameters and factory settings. Parameter Function Available Factory Selections Setting BAUD RATE Sub-channel 75, 110, 150, 300, 9600 data rate 600, 1200, 2400, 4800, 9600, 19200, 38400 bps DATA BITS Number of data 5, 6, 7, 8 bits in sub-channel data frame...

  • Page 20: Outline Of Configuration Program

    CHAPTER 3: Installation 3.8.3 O UTLINE OF ONFIGURATION ROGRAM The organization tree of the configuration program is shown in Figure 3-6.
  • Page 21 STAT-4, STAT-8, AND STAT-24 Figure 3-6. Configuration tree.
  • Page 22 CHAPTER 3: Installation...

  • Page 23: Starting The Configuration Session

    STAT-4, STAT-8, AND STAT-24 3.9 Starting the Configuration Session 3.9.1 U SING THE ONFIGURATION ROGRAM The stat mux configuration program is used to configure the stat mux for operation in your particular system. The configuration programs for the Stat-4, Stat-8, and Stat-24 are similar, except for the number of sub-channels.
  • Page 24 CHAPTER 3: Installation NOTES 1. The following examples assume that the command mode is activated via sub-channel 1. 2. Stat mux commands requiring alphanumeric inputs are case-sensitive: observe use of lower-case and upper-case letters in the following examples. 1. To start the configuration session, allow an idle period of at least one second, type @@@, then wait at least one second and type S (typing any other character after the @@@ string returns the stat mux to the normal mode, and you will see the message STM IS IN NORMAL MODE).
  • Page 25 STAT-4, STAT-8, AND STAT-24 5. If the mux accepts the password, it sends the main menu, shown in Figure 3-9. COMMAND MODE IS ACTIVATED VIA CH1 MAIN MENU 1) SYSTEM CONFIGURATION 2) CONFIGURE LOCAL CHANNELS 3) DISPLAY LOCAL CHANNEL CONFIGURATION 4) DIAGNOSTICS Q) EXIT TO NORMAL OPERATION SELECT YOUR CHOICE (1–4)

  • Page 26: Configuration Procedure

    CHAPTER 3: Installation 3.10 Configuration Procedure The following paragraphs present the menus and the data entry screens contained in the configuration program. Table 3-3 lists the available menus and screens and their index numbers. Table 3-3. Stat mux configuration program. Index Menu/Data Entry Screen Page...

  • Page 27: Main Menu

    STAT-4, STAT-8, AND STAT-24 1. Main Menu Purpose: Select the configuration task. Table 3-4. Configuration description via the main menu. Code Item Description SYSTEM CONFIGURATION Used for selection of system-wide parameters (see Section 3.8.2): - Select X-ON and X-OFF flow control characters. - Change password.

  • Page 28: System-Configuration Menu

    CHAPTER 3: Installation 2. System-Configuration Menu Purpose: Select the parameters that affect the whole system: X-ON and X-OFF characters, password, and remote stat mux configuration. Table 3-5. System Configuration menu. Code Item Description X-ON CONTROL CHARACTER Used to display X-ON character selection screen X-OFF CONTROL CHARACTER Used to display X-OFF character selection screen MODIFY PASSWORD...

  • Page 29: X-Off Control Character Screen

    STAT-4, STAT-8, AND STAT-24 4. X-OFF Control Character Screen Purpose: View the character currently used to stop data transfer when using software flow control, and select another character, if desired. Description: Code numbers 1 through 8 present the various characters that you can use as X-OFF control characters: 11H (DC1), 12H (DC2), 13H (DC3), 14H (DC4), 91H, 92H, 93H, or 94H.

  • Page 30: Local Stm Configuration Display Screen

    CHAPTER 3: Installation 6. Local Stat Mux Configuration Display Screen Purpose: Display the information regarding local stat mux configuration, after selecting item 3 on the MAIN Menu screen. Description: The screen displays the parameters selected for the local stat mux sub-channels. For the Stat-24, the information is presented on three consecutive screens.

  • Page 31: Baud Rate Screen

    STAT-4, STAT-8, AND STAT-24 Code numbers 1 through 8 list the various sub-channel parameters that you can change: sub-channel data rate, number of data bits in sub-channel data frame, type of parity used in sub-channel data frame, number of stop bits in sub-channel data frame, software flow control function at the local end of the sub-channel, end-to-end software flow control, end-to-end hardware flow control (by means of DTR line), and transfer of RTS status to DCD control line.

  • Page 32: Parity Screen

    CHAPTER 3: Installation 11. Parity Screen Purpose: View current parity used by the sub-channel and select, if desired, a new type. Description: Code numbers 1 through 5 list the available parity types: even, odd, space, mark, or no parity. Type Q to return to the Local Sub-Channel Configuration screen (8). The Current State line shows the current type of parity.

  • Page 33: End-To-End Software Flow Control Screen

    STAT-4, STAT-8, AND STAT-24 If the DTE cannot recognize the X-ON and X-OFF characters, you must select the Off option. In this case, the control of data flow between the stat mux and the DTE connected to it is performed via the CTS control line contained in the RS-232 interface.

  • Page 34: End-To-End Dtr Flow Control Screen

    CHAPTER 3: Installation Procedure: To change the status of end-to-end software flow control used on this sub-channel, type the appropriate code number. The new selection appears in the Current State line. Type Q to return to the Local Sub-Channel Configuration screen (8). 15.

  • Page 35: Duplicate Local Channel Parameters Screen

    STAT-4, STAT-8, AND STAT-24 Procedure: To change the status of the RTS-to-DCD transfer for this sub-channel, type the appropriate code number. The new selection appears in the Current State line. Type Q to return to the Local Sub-Channel Configuration screen (8). 17.

  • Page 36: Local Loops Screen

    CHAPTER 3: Installation Type Q to return to the MAIN Menu screen. 19. Local Loops Screen Purpose: View the current status of the individual local sub-channel and composite channel loops and go to the control screen for any of these loops. Description: The screen requires you to enter a number that defines the channel you want to modify: 00 for the composite channel, or a sub-channel number (01 to 24).

  • Page 37: Modem Loops Screen

    STAT-4, STAT-8, AND STAT-24 21. Modem Loops Screen Purpose: View the current status of the loops on the modem serving the main (composite) channel and go to the control screen for any of these loops (see 22). Its functions are similar to those of the Local Loops screen, described in 19.

  • Page 38: Remote Stm Configuration Menu

    CHAPTER 3: Installation Table 3-6. Description of the Remote STM Configuration menu. Code Item Description TRANSFER CONFIGURATION Used to initiate transfer of current remote stat mux FROM REMOTE TO LOCAL configuration to the local stat mux. After remote configuration is received by the local stat mux, it can be examined using the terminal connected to the local stat mux.

  • Page 39: Transfer Configuration From Remote To Local Screen

    STAT-4, STAT-8, AND STAT-24 Description: This screen is displayed after selecting Item 1 on the Remote STM Configuration menu, while the remote configuration information is transmitted to the local stat mux. In most cases, the screen is displayed for a very short interval;...

  • Page 40: Remote Stm Configuration Display Screen

    CHAPTER 3: Installation required, you can press Q to return to the Remote STM Configuration menu (25). 27. Save in Local Stat Mux Screen Purpose: Notify the user that a copy of the configuration of the remote stat mux has been permanently stored in the local stat mux.

  • Page 41: Prepare Remote Stm Configuration Menu

    STAT-4, STAT-8, AND STAT-24 30. Remote Stat Mux System Configuration Menu Purpose: Select the X-ON and X-OFF characters and change the password used by the remote stat mux. Description: Menu functions are similar to the corresponding functions of the System Configuration menu (2), except that the selections made from this screen affect only the remote stat mux.

  • Page 42: Operation

    CHAPTER 4: Operation 4. Operation 4.1 Controls, Indicators, and Connectors 4.1.1 S Table 4-1 lists the functions of the Stat-4 and Stat-8 indicators and connectors. The numbers under the heading “Item” refer to the identification numbers in Figure 4-1. The Stat-4 has the same front panel as the Stat-8, except that the Stat-4 has only 4 RJ-45 ports and the Stat-8 has 8 RJ-45 ports.
  • Page 43 STAT-4, STAT-8, AND STAT-24 Table 4-1. Stat-8 controls, indicators and connectors. Item Control, Indicator, or Connector Function PWR indicator Lights when the STM is powered. SYNC indicator Indicates stat mux synchronization status Condition Indication Stat mux not powered. Stat mux powered and synchronized with the remote.

  • Page 44: Stat-24

    CHAPTER 4: Operation Table 4-1 (continued). Stat-8 controls, indicators and connectors. Item Control, Indicator, or Connector Function Power switch Turns the stat mux on Main (composite) channel Connection to main (composite channel) connector 4.1.2 S The Stat-24 is similar to the Stat-8, except it has 24 sub-channels. The functions of the Stat-24 controls, indications and connectors are similar to those of the Stat-8, listed in Table 4-1.

  • Page 45: Operating Instructions

    STAT-4, STAT-8, AND STAT-24 4.2 Operating Instructions 4.2.1 G ENERAL After preparing for operation as explained in Sections 3.3 through 3.6, the stat mux normally operates unattended. Operator intervention is only required when the stat mux is set up for the first time or must be adapted to new operational requirements.
  • Page 46 CHAPTER 4: Operation Table 4-2. Stat mux indications. Indication Probable Cause Action ERR lit Stat mux problem Turn the stat mux off, then turn it on again or press RESET. If ERR indicator remains lit, replace the stat mux. TEST lit 1.

  • Page 47: Diagnostics

    STAT-4, STAT-8, AND STAT-24 5. Diagnostics 5.1 General The stat mux diagnostics functions use a full set of test loops and front-panel indicators to provide you with the tools required for rapid identification of faults that affect system operation. The test loops available for diagnostics and test purposes are: a.

  • Page 48: Description Of Test Loops

    CHAPTER 5: Diagnostics 5.2 Description of Test Loops Whenever a test loop is on, the TEST indicator will light and traffic will be disrupted. 5.2.1 L OCAL OOPS 1. Local composite channel loop. When the local composite channel loop is connected, the composite channel data transmitted by the local stat mux is applied to the receive line of the local stat mux, and the communication link is disconnected (this causes the remote stat mux to lose frame synchronization).

  • Page 49: Modem Loops

    STAT-4, STAT-8, AND STAT-24 5.2.3 M ODEM OOPS 1. Analog modem loop. When the analog modem loop is connected, the composite channel data transmitted by the local stat mux is returned to the receive line of the local stat mux after passing through the local modem, and the communication link is disconnected.

  • Page 50: Appendix A: Interface Pinouts

    APPENDIX A: Interface Pinouts Appendix A: Interface Pinouts A.1 Main (Composite) Channel Interface The stat mux main (composite) channel interface is configured as a synchronous DTE RS-232 interface, with a male DB25 connector. Table A-1 lists the pinouts. Table A-1. Main (composite) channel connector. CCITT V.24 EIA RS-232C Signal...

  • Page 51: Sub-Channel Interface

    STAT-4, STAT-8, AND STAT-24 Table A-1 (continued). Main (composite) channel connector. CCITT V.24 EIA RS-232C Signal Description Circuit Number Line Name Data Terminal Ready Continuous positive level from stat mux — Loop 3 Test Command Control signal from stat mux to modem.
  • Page 52 APPENDIX A: Interface Pinouts Table A-2 (continued). Sub-channel connectors. CCITT V.24 EIA RS-232C RJ-45 Signal Name Description Circuit Line Clear to Send A positive level from the stat mux indicates that the terminal is allowed to send data. This pin is used for hardware flow control.

  • Page 53: Appendix B: Stat Mux Configuration Record

    STAT-4, STAT-8, AND STAT-24 Appendix B: Stat Mux Configuration Record This appendix contains a typical configuration record form. You can use this form as a worksheet when you plan your system configuration and as a permanent record of the actual configuration.
  • Page 54 APPENDIX B: Stat Mux Configuration Record Stat-4/Stat-8/Stat-24 Configuration Record Date: ____/____/____ Prepared by:__________________________________ Sheet ____of____ Location:___________________________________ Other Location:________________________________ Stat-4/Stat-8/Stat-24 Serial No.___________________________________ System Password ______________________________ __________________________________________ Data X-On Character _________________________ __________________________________________ X-Off Character _________________________ __________________________________________ Local Configuration Word Format Flow Control Sub-Channel Data Data Parity Stop...
  • Page 55 STAT-4, STAT-8, AND STAT-24 Local Configuration Word Format Flow Control Sub-Channel Data Data Parity Stop Stat Mux-to- End-to-End RTS-DCD Transfer Rate Bits Bits Software Software...

  • Page 56: Appendix C: Quick Start Guide

    APPENDIX C: Quick Start Guide Appendix C: Quick Start Guide C.1 How to Use This Appendix This guide provides concise instructions for preparing stat mux configuration. It is intended for users already familiar with the stat mux, and for experienced users who have a good basic understanding of data communication principles and applications and characteristics of statistical multiplexers.

  • Page 57: Transfer Configuration To The Remote Stat Mux

    STAT-4, STAT-8, AND STAT-24 NOTE The default password is RD. If you do not know the password, initialize the stat mux via the INIT/NOR jumper. 4. The stat mux displays the Main Menu. Use Figure 3-6 to plan your configuration actions. Record the configuration on the form given in Appendix B.

  • Page 58: Appendix D: Stat Mux Configuration Transfer Facilities

    APPENDIX D: Stat Mux Configuration Transfer Facilities Appendix D: Stat Mux Configuration Transfer Facilities D.1 Scope This appendix explains the facilities for stat mux configuration transfer and their use during configuration management activities. D.2 Configuration Storage and Transfer Figure D-1 shows the organization of the main stat mux configuration storages. D.2.1 D ESCRIPTION OF ONFIGURATION...

  • Page 59: Managing The Configuration Storages

    STAT-4, STAT-8, AND STAT-24 Figure D-1. Stat mux configuration storages. D.2.2 M ANAGING THE ONFIGURATION TORAGES 1. You can send the current configuration of the local stat mux to the remote stat mux and store it there in the non-volatile remote-configuration storage. This action is initiated by the Transfer Configuration from Local to Remote command.
  • Page 60 APPENDIX D: Stat Mux Configuration Transfer Facilities 5. You can prepare a new configuration for the remote STM locally, using the temporary storage. You can transfer this configuration to the remote stat mux (where it is stored in its non-volatile local storage) and activate it there with the Activate Remote STM Configuration command.
  • Page 61 © Copyright 2004. Black Box Corporation. All rights reserved. 1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746...

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