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Spirent DLS 6700 Operating Manual

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User Guide
DLS 6700
Operating Manual
Version 1.02
Nov 2004
P/N 7104000557

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Summary of Contents for Spirent DLS 6700

  • Page 1 User Guide DLS 6700 Operating Manual Version 1.02 Nov 2004 P/N 7104000557...
  • Page 2 Spirent Communications, Inc. Spirent Communications 750 Palladium Drive Ottawa, Ontario, Canada K2V 1C7 Support Contacts Canada E-mail: ae.service@spirentcom.com Web: http://ae.spirentcom.com Toll Free: 1-800-465-1796 Phone: + 1 : 613-592-7301 Fax: +1 613-592-0522 Europe E-mail: support.europe@spirentcom.com Web: http://support.spirentcom.com Phone: +33 (0) 1 61 37 22 70...

  • Page 3: Table Of Contents

    Table of Contents 1. INTRODUCTION ............1-1 1.1 About Spirent’s Involvement in Wireline Simulation ... 1-1 1.2 About the DLS 6700 ADSL2++ Wireline Simulator .... 1-1 1.3 About this Manual ............1-2 2. GETTING STARTED ............ 2-1 2.1 Receiving and Unpacking the Unit ........2-1 2.2 Setup Overview ............
  • Page 4 11.2.1 Before Operating the Unit ........11-2 11.2.2 Operating the Unit ..........11-2 11.3 Symbols ..............11-2 APPENDIX A. MEASUREMENTS AND TEST RESULTS A.1 Measurement of the DLS 6700 ........A-1 A.2 Common Errors ............A-2 A.3 Typical Attenuation Characteristics ........A-2 APPENDIX B. BACKGROUND NOISE MEASUREMENTS...

  • Page 5: Introduction

    ADSL2++ bandwidth access products (DC to 4.5 MHz). The DLS 6700 is used to ensure xDSL copper access prod- ucts perform correctly before they leave the production floor. The DLS 6700 achieves a low cost per port by offering 8, 12 or 18 port configurations in a 1 U rack mountable chassis.

  • Page 6: About This Manual

    The configuration software that ships with the DLS 6700 provides you with full control over the characteristics of each DLS 6700 simulated loop. We recommend that you develop your own scripts based on the type of automated testing that best suits your products.

  • Page 7: Getting Started

    Spirent Communications. See Chapter 9 "SHIPPING THE UNIT" for information. Setup Overview To test: 1) Connect the power cord on the back of the DLS 6700 chassis and switch the power on. 2) Connect the serial cable from the control computer to the back of the DLS 6700.

  • Page 8: Front Panel Indicators

    TROL" shows examples on how to read the ESR register, clear the error flags and make the REMOTE LED green once error conditions have been resolved. Rear Panel Connections All connectors for the DLS 6700 are located on the rear panel (see Figure 2.2 "DLS 6700 Back Panel") Page 2-2...

  • Page 9: Connecting To Power

    In a typical setup the Telephone Exchange (Central Office) equipment would be con- nected to an “Output” Port, and the customer site equipment to the corresponding “Input” Port of the DLS 6700 wireline simulator. The pinout of the RJ-11 female con- nector is shown in Figure 2.3.

  • Page 10: Dls 6700 Remote Control

    Connecting the Computer via the Serial Port (RS-232) Connect one end of an RS-232 serial cable to the RS-232 connector located on the back panel of the DLS 6700 chassis and the other end to a serial COM port connector on the computer.

  • Page 11: Dls 6700 Software

    DLS 6700 Operating Manual DLS 6700 SOFTWARE DLS 6700 Software The DLS 6700 GUI provides you with an interactive interface to control the DLS 6700. NOTE This software runs on any Windows 98, NT 4.0 with service pack 4.0 and up, or Windows 2000 compatible computer.

  • Page 12: Communications Interface Selection

    3.3.1 Controlling the Line The most direct way to control a DLS 6700 unit is to click on the Spin controls (up and down arrows) to change the length of the line. This will “step” the length by the appro- priate increment or decrement.

  • Page 13: Groups

    The Grouping feature is a convenient way to set many lines at once. Select the lines to be modified and then apply a length to the grouped lines. Figure 3.2 DLS 6700 Main Editing Grid To specify which lines are in the group, click the checkbox in the Grouped column for each line that is to be grouped.

  • Page 14: Menu Selections

    Menu Selections 3.4.1 File Load - Retrieves a previously stored file of DLS 6700 settings from disk. Save - Stores the current settings of the DLS 6700 to a file on disk Exit - Shuts down the program 3.4.2 Tools Identify Units - Flashes the Remote LED on the appropriate unit.

  • Page 15: Remote Control

    • The serial port physical interface follows the EIA RS-232 standard. 4.1 RS-232 Serial Interface The DLS 6700 uses a female DB-25 or an RJ-45 connector, and is configured as a DCE device. It can therefore be connected directly to a PC serial port.

  • Page 16: Example Using The Rs-232 Interface

    <NRf> is the Flexible Numeric Representation defined in the IEEE 488.2 standard which can represent just about any number. The DLS 6700 can accept data in the <NRf> format, which means that numbers can be made of a combination of digits, signs, decimal point, exponent, multiplier, unit and spaces.

  • Page 17: Command Syntax

    *ESE?;*SRE? :SET:CHAN:LINE? When a command does not begin with a colon, the DLS 6700 assumes that the com- mand is at the same level as the previous command. For example, to set a line one does NOT need to specify “:SYS:CAL” each time, as in: :SYS:CAL:Date Dec 2001;Expiry Dec 2002...

  • Page 18: Setting:channel:line ,

    (26AWG). For example, if the length of line 1 is 4 kft, and can vary from 1 to 24 kft in 1,000 ft steps, and is a 26 AWG gauge, the returned message will be: 1,4000 FT,0,24000,1000,26AWG If there is no simulated line at the <Line Number>, then the DLS 6700 will return “<Line NUMBER>,NONE”. For example: 17,NONE 4.4.2 :SYStem:Communicate:serial:echo <Off|On>...

  • Page 19: System:communicate:serial:pace

    Chapter 4: REMOTE CONTROL When the echo is on, the DLS 6700 will echo back all the characters sent to the unit and display the prompt character “>”. To query the echo state, send: :sys:comm:ser:echo? Note: New units leaving the Access Emulation Division facility will have the echo set to off.
  • Page 20 Identification Query Type: System command Function: Returns the ID of the unit. Upon receiving this command the DLS 6700 will put the following string into the output queue: SPIRENT COMM. INC,DLS 6700,<SN>,<Ver> where: <SN> is the serial number of the unit...
  • Page 21 Synchronization command Function:Indicates when the current operation is complete. This will cause the DLS 6700 to put an ASCII 1 (decimal 49, hex 31) in the out- put queue when the current operation is complete. Communication can proceed as normal after this command, but be prepared to receive the “1”...
  • Page 22 DLS 6700 Operating Manual Bits 7 to 0 have values of 128, 64, 32, 16, 8, 4, 2 and 1, respectively. For example, if bits 4 and 5 are set then the integer value is 48 (16+32). On power-on, this register is cleared if the Power-on Status Clear bit is 1, or restored if the bit is 0 (see *PSC for more details).

  • Page 23: Status Reporting

    Type: Synchronization command Function: Used to delay execution of commands. The DLS 6700 will ensure that all commands received before “*WAI” are completed before processing any new commands. This means that all further communication with the 6700 will be frozen until all pending operations are completed.

  • Page 24: Event Status Register (Esr)

    Operation Complete. This bit is set in response to the *OPC command when the current operation is complete. bit 1 Request Control. The DLS 6700 does not have an IEEE 488 bus, and so this bit is always 0. bit 2 Query Error.

  • Page 25: Dls 6700 Synchronization

    Chapter 4: REMOTE CONTROL 4.6.3 DLS 6700 Synchronization The program controlling the DLS 6700 can use three different commands to synchro- nize with the DLS 6700: *OPC, *OPC? and *WAI. The main differences are as follows: Set Opera- Return “1”...
  • Page 26 DLS 6700 Operating Manual Page 4-12 7104000557 Spirent Communications...

  • Page 27: Troubleshooting

    DLS 6700 Operating Manual TROUBLESHOOTING The power LED flashes red: At power up, the DLS 6700 performs a self-test. If this self-test fails, the power LED flashes red. If this happens, consult the factory. The power LED is orange: If the DLS 6700 detects an internal error, it does a full system initialisation and turns the power LED orange.
  • Page 28 DLS 6700 Operating Manual Page 5-2 7104000557 Spirent Communications...

  • Page 29: References

    DLS 6700 Operating Manual REFERENCES • IEEE 488.2-1992, IEEE Standard Codes, Formats, Protocols, and Common Com- mands (The Institute of Electrical and Electronics Engineers, Inc. 345 East 47th Street, New York, NY 10017-2394, USA) • SCPI Standard Commands for Programmable Instruments, available from some interface controller manufacturers (SCPI Consortium, 8380 Hercules Drive, Suite P.S., La Mesa, CA 91942, Phone: (619) 697-8790, Fax: (619) 697-5955)
  • Page 30 DLS 6700 Operating Manual Page 6-2 7104000557 Spirent Communications...

  • Page 31: Customer Support

    E-mail at: ae.service@spirentcom.com. All other customers should check the ae.spirentcom.com web site for the contact information of the nearest Customer Service center or contact the main Spirent Com- munications service center for assistance (contact information is listed above). For product information and updates, please visit the Spirent Communications web site at: https://ae.spirentcom.com...

  • Page 32: Three-Year Calibration Agreement

    • If required because of a repair, free calibration due to repair during the coverage period. • Prepaid, return shipment of repaired products worldwide. Spirent Communications' Extended Warranty can be purchased at any time up until the expiration of the original one-year manufacturer's warranty. 7.4 Three-Year Calibration Agreement Spirent Communications’...

  • Page 33: Warranty

    In the event that a defect in any such equipment arises within the warranty period, it shall be the responsibility of the customer to return the equipment by prepaid trans- portation to a Spirent Communications service center prior to the expiration of the warranty period for the purpose of allowing Spirent Communications to inspect and repair the equipment.
  • Page 34 DLS 6700 Operating Manual Page 8-2 7104000557 Spirent Communications...

  • Page 35: Shipping The Unit

    (RMA) number given by the Spirent Communications Customer Service department is shown on the outside. The RMA number is mandatory and must be obtained from a Spirent Communications Customer Service center before shipping the unit (see Section 7 "CUSTOMER SUP- PORT"...
  • Page 36 DLS 6700 Operating Manual Page 9-2 7104000557 Spirent Communications...

  • Page 37: Specifications

    DLS 6700 Operating Manual 10. SPECIFICATIONS 10.1 General Type of Wire: DLS 6726:26AWG as per ANSI T1.417 Variable range: DLS 6726:0-24,000 ft in 1000 ft increments. Bandwidth: DC to 4.5 MHz DC Rating: 100 V Attenuation: MAE < 1 dB (20 kHz – 4.5 MHz) Typically simulation vs.

  • Page 38: Carton Contents

    DLS 6700 Operating Manual 10.4 Carton Contents: 1) DLS 6700 ADSL2++ Wireline Simulator 2) AC to DC Wall Plug-in Adapter 3) RS–232C Cable 4) Control Software for Windows 98/NT/2000 operating systems Page 10-2 7104000557 Spirent Communications...

  • Page 39: Safety

    11.1 Information 11.1.1 Protective Isolation The DLS 6700 is isolated from hazardous AC line voltages by the supplied AC/DC adapter. If the AC/DC adapter comes with a protective earth terminal, never wilfully interrupt this connection. 11.1.2 Before Operating the Unit •...

  • Page 40: Class Of Equipment

    Operating Manual is in direct violation of the standards of design, manufacture and intended use of the equipment. NOTE Spirent Communications assumes no liability for the customer’s failure to comply with any of these requirements. 11.2.1 Before Operating the Unit •...
  • Page 41 Chapter 11: SAFETY When any of these symbols appear on the unit, this is their meaning: EQUIPOTENTIALITY–FUNCTIONAL PROTECTIVE GROUNDING EARTH TERMINAL CONDUCTOR TERMINAL CAUTION - REFER TO ACCOMPANYING DOCUMENTS Spirent Communications Page 11-3 7104000557...
  • Page 42 DLS 6700 Operating Manual Page 11-4 7104000557 Spirent Communications...

  • Page 43: Appendix A. Measurements And Test Results

    Transformers and cables introduce errors of attenuation and phase. For accurate measurements, first perform calibration (normalization) by replacing the simulator with a direct connection. WARNING The use of unbalanced signals through the DLS 6700 will usually yield incorrect measurements. Spirent Communications Page A-1...

  • Page 44: Common Errors

    “spikes”. A.3 Typical Attenuation Characteristics Attenuation Characteristics Theory Measured 2 kft 4 kft 6 kft Frequency (MHz) Figure A3.1 DLS 6700 - Attenuation at 2 kft, 4 kft and 6 kft Page A-2 7104000557 Spirent Communications...
  • Page 45 Theory Measured 8 kft 10 kft 14 kft 12 kft Frequency (MHz) Figure A3.2 DLS 6700 - Attenuation at 8 kft, 10 kft, 12 kft and 14 kft Attenuation Characteristics Theory Measured 20 kft 18 kft 16 kft 24 kft Frequency (MHz) Figure A3.3 DLS 6700 - Attenuation at 16 kft, 18 kft, 20 kft and 24 kft...
  • Page 46 DLS 6700 Operating Manual Page A-4 7104000557 Spirent Communications...

  • Page 47: Appendix B Background Noise Measurements

    (DUT); the displayed result will be worse than the real one. In conclusion, the error introduced by the analyzer itself has to be taken into consid- erations when measuring noises with values close to -140 dBm/Hz. Spirent Communications Page B-1 7104000557...
  • Page 48 DLS 6700 Operating Manual Page B-2 7104000557 Spirent Communications...

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