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Fluke DTX Compact OTDR User Manual

Optical time domain reflectometry modules
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DTX Compact OTDR
™
Optical Time Domain Reflectometry Modules
Users Manual
PN 2823896
May 2007
©2007 Fluke Corporation. All rights reserved. Printed in USA.
All product names are trademarks of their respective companies.

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  • Page 1 DTX Compact OTDR ™ Optical Time Domain Reflectometry Modules Users Manual PN 2823896 May 2007 ©2007 Fluke Corporation. All rights reserved. Printed in USA. All product names are trademarks of their respective companies.
  • Page 2 90 days, unless otherwise stated. Ni-Cad, Ni-MH and Li-Ion batteries, cables or other peripherals are all considered parts or accessories. The warranty extends only to the original buyer or end user customer of a Fluke Networks authorized reseller, and does not apply to any product which, in Fluke Networks’...

  • Page 3: Table Of Contents

    Overview of Features ................................1 Registration ................................... 1 Contacting Fluke Networks ..............................2 Safety Information ................................2 Installing the DTX Compact OTDR Module ......................... 4 Using the Cradle ..................................6 Software Requirements ................................ 6 OTDR Module Features ................................. 7 Cleaning Connectors and Adapters ............................. 8 OTDR Test Settings ................................
  • Page 4 DTX Compact OTDR Modules Users Manual Index ...................................... 31...
  • Page 5 List of Figures Figure Page Installing the OTDR Module .......................... 5 Using the Cradle ............................. 6 OTDR Module Features ..........................7 Equipment for the OTDR Test ........................15 Connecting the OTDR to Installed Fiber (no receive fiber)................18 Connecting the OTDR to Installed Fiber (with receive fiber) ..............19 Connecting the OTDR to Spooled Cable.......................
  • Page 6 DTX Compact OTDR Modules Users Manual...

  • Page 7: Overview Of Features

    ™ to locate and characterize reflective and loss troubleshooting tips, and other support services. To register, events in optical fibers. The modules offer the following fill out the online registration form on the Fluke Networks features: website at www.flukenetworks.com/registration. •...

  • Page 8: Contacting Fluke Networks

    DTX Compact OTDR Modules Users Manual Contacting Fluke Networks Safety Information www.flukenetworks.com Table 1 describes the international electrical symbols used on the tester and in this manual. support@flukenetworks.com +1-425-446-4519 Table 1. International Electrical Symbols • Australia: 61 (2) 8850-3333 or 61 (3) 9329 0244 Warning or Caution: risk of damage or •...
  • Page 9 Safety Information • Use proper cleaning procedures to clean all fiber Warning connectors before every use. Neglecting this step or using improper procedures can cause To avoid possible eye damage caused by unreliable test results and may permanently hazardous radiation and to avoid possible fire, damage the connectors.

  • Page 10: Installing The Dtx Compact Otdr Module

    The OTDR can interfere with the light injection detection techniques used by some splicers. Remove and discard the standard bail. Install the bail included with the DTX Compact OTDR Installing the DTX Compact OTDR module. This new bail has a keyed hole at the bottom Module where the OTDR module locks onto the bail.

  • Page 11: Installing The Otdr Module

    Installing the DTX Compact OTDR Module SAVE AUTO TEST SINGLE SETUP TEST SPECIAL MONITOR FUNCTIONS TALK amd157f.eps Figure 1. Installing the OTDR Module...

  • Page 12: Using The Cradle

    Figure 2 shows how to use the cradle to stand the tester up The following software supports the DTX Compact OTDR on a flat surface when a DTX Compact OTDR module is module. Software upgrades are available on the Fluke attached.

  • Page 13: Otdr Module Features

    OTDR Module Features OTDR Module Features OTDR ports for singlemode (left) and multimode (right) fiber. The ports have removable SC connector adapters with protective caps. Visual fault locator (VFL) output with universal fiber connector and protective cap. The connector accepts 2.5 mm ferrules. Laser safety label (shown below): amd155f.eps Warning*...

  • Page 14: Cleaning Connectors And Adapters

    DTX Compact OTDR Modules Users Manual Cleaning Connectors and Adapters Cleaning Fiber Adapters Periodically clean fiber adapters with a swab and fiber optic Always clean and inspect fiber connectors before making solvent. Dry with a dry swab before use. connections. Use fiber optic solvent and optical-grade wipes...

  • Page 15: Otdr Test Settings

    OTDR Test Settings OTDR Test Settings turn the rotary switch to SETUP; then select Fiber OTDR. Use to move among the tabs of settings. To access the OTDR test settings described in Table 2 (except the Auto/Manual setting), Table 2. OTDR Test Settings Setting Description Auto/Manual...
  • Page 16 DTX Compact OTDR Modules Users Manual Table 2. OTDR Test Settings (cont.) Setting Description Wavelength You can test cabling at one or all the wavelengths supported by the installed module and the selected test limit. Note If you select the dual-wavelength setting, be sure to select a fiber type and test limit that supports both wavelengths.
  • Page 17 OTDR Test Settings Table 2. OTDR Test Settings (cont.) Setting Description Index of refraction, which is used to calculate length. The default n values defined in the fiber types are suitable for most applications. Minor differences between the default n and a fiber's actual n usually do not make enough difference in length to fail a fiber.
  • Page 18 DTX Compact OTDR Modules Users Manual Table 2. OTDR Test Settings (cont.) Setting Description Averaging Time The averaging time sets the number of measurements averaged together to create the final trace. (Manual OTDR Longer times reduce noise on the trace which increases dynamic range and accuracy and reveals mode only) more details, such as smaller non-reflective events.
  • Page 19 OTDR Test Settings Table 2. OTDR Test Settings (cont.) Setting Description Pulse Width The pulse width affects the deadzones of the trace and the dynamic range. (Manual OTDR mode Narrower pulses let you see more detail in and around reflective events and help you see events only) that are close together (hidden events).
  • Page 20 DTX Compact OTDR Modules Users Manual Table 2. OTDR Test Settings (cont.) Setting Description Loss Threshold User Defined lets you set the threshold (in decibels) for reporting loss events. Events at or above (Manual OTDR mode the threshold are included in the event table. The range for this setting is 0.01 dB to 1.50 dB only) inclusive.

  • Page 21: Using The Otdr

    Using the OTDR Using the OTDR EXIT TEST ENTER SAVE AUTO TEST SINGLE SETUP TEST SPECIAL MONITOR FUNCTIONS TALK amd152f.eps Tester with OTDR module Launch fiber and receive fibers (optional). Match the fiber to be tested. Match cable connectors at one end when Memory card (optional) possible.

  • Page 22: About Launch And Receive Fibers And Launch Compensation

    The tester shows the end of the launch fiber and the beginning of the receive fiber (if you selected receive Fluke Networks recommends that you use launch and fiber compensation) on the Event Table. You can receive fibers. You should also use launch compensation to...

  • Page 23: Running The Otdr Test

    Using the OTDR Running the OTDR Test Select Auto OTDR mode: Turn the rotary switch to To save the results, press ; then do one of the AUTOTEST, press Change Test; then select Auto. following: • Choose settings for the test. Turn the rotary switch to To save the results in a new record, create an ID or SETUP;...

  • Page 24: Connecting The Otdr To Installed Fiber (No Receive Fiber)

    DTX Compact OTDR Modules Users Manual Installed fiber Patch Patch panel panel Launch fiber Tester with OTDR module amd101f.eps Figure 5. Connecting the OTDR to Installed Fiber (no receive fiber)

  • Page 25: Connecting The Otdr To Installed Fiber (With Receive Fiber)

    Using the OTDR Installed fiber Patch Patch panel panel Launch fiber Tester with OTDR EXIT TEST Receive ENTER module SAVE AUTO TEST SINGLE SETUP TEST fiber SPECIAL MONITOR FUNCTIONS TALK amd116f.eps Figure 6. Connecting the OTDR to Installed Fiber (with receive fiber)

  • Page 26: Connecting The Otdr To Spooled Cable

    DTX Compact OTDR Modules Users Manual Pigtail patch cord and mechanical splice Tester with OTDR module Spooled cable amd122f.eps Figure 7. Connecting the OTDR to Spooled Cable...

  • Page 27: Otdr Results Screen

    Using the OTDR Overall result for the test: PASS: All measurements are within limits. FAIL: One or more measurements exceed the limit. The limit, fiber type, wavelengths, and fiber end number (1 or 2) used for the test. See Table 2 on page 9. Measurements taken and each measurement’s status: : The measured value is within the limit.

  • Page 28: Viewing The Otdr Trace

    DTX Compact OTDR Modules Users Manual Viewing the OTDR Trace Figure 9 describes the readouts and navigational features on the OTDR screen. Figure 10 describes the features of a To see the OTDR trace, press View Trace from the typical OTDR trace.
  • Page 29 Using the OTDR Wavelength for the trace and the End setting selected in Press to see the Event Table. Setup. If the test ran at two wavelengths, press Next Event information appears if the cursor is on an event. Trace to switch wavelengths. You can set the wavelengths Otherwise, the distance to the cursor is shown.

  • Page 30: Typical Otdr Trace Features

    DTX Compact OTDR Modules Users Manual amd125f.eps Figure 10. Typical OTDR Trace Features...
  • Page 31 Using the OTDR Reflective event caused by the OTDR port connection. Reflective event caused by the last connection in the cabling. The dotted line marks the end of the fiber under Reflective event caused by the first connection in the test and the beginning of the receive fiber.

  • Page 32: Using The Visual Fault Locator

    Using the Visual Fault Locator Figure 11 shows the equipment needed for using the visual fault locator. The DTX Compact OTDR module includes a visual fault locator that helps you do the following: The visual fault locator port accepts connectors with 2.5 mm ferrules (SC, ST, or FC).

  • Page 33: Equipment For Using The Visual Fault Locator

    Using the Visual Fault Locator To use the visual fault locator (refer to Figure 12): Clean the connectors on the patch cord, if used, and the fiber to be tested. Connect the fiber directly to the tester’s VFL port or connect using the patch cord.

  • Page 34: Using The Visual Fault Locator

    DTX Compact OTDR Modules Users Manual Continuity check/tracing fibers Microbend or broken fiber connector Broken fiber in connector Tester with OTDR module Turn the rotary switch to SINGLE TEST. Use the Bad splice softkeys to control the VFL. Sharp bend etw01.eps...

  • Page 35: Maintenance

    CableAnalyzer Users Manual. Inspecting the OTDR Ports Periodically inspect the OTDR port with a fiber microscope, such as the Fluke Networks FiberInspector Video Microscope. Cleaning the OTDR Ports To clean the OTDR ports, use a dry, optical-grade wipe. Figure 13 shows how to remove the OTDR adapter to access the connector ferrule.

  • Page 36: Certifications, Compliance, And Regulatory Information

    DTX Compact OTDR Modules Users Manual Certifications, Compliance, and Regulatory Information Conforms to relevant Australian standards N10140 Conforms to relevant European Union directives. Listed by the Canadian Standards Association. Laser Class 1 CDRH safety Complies to EN 60825-2...
  • Page 37 Fiber Type, 9 Fluke Networks, 2 –C– cautions, 3 –H– certifications and compliance, 30 cleaning help (contacting Fluke Networks), 2 connectors and adapters, 8 OTDR connector, 29 –I– connections index of refraction, 11 launch + receive fiber test connections, 19...
  • Page 38 DTX Compact OTDR Modules Users Manual –L– –P– Launch Compensation, 10, 16 Pulse Width, 13 launch/receive fibers connections, 19 –R– purpose, 16 Range, 11 Loss Threshold, 14 receive fiber purpose, 16 –M– test connections, 19 maintenance, 29 registration, 1 Manual mode, 9 manual OTDR settings, 11, 12, 13, 14 –S–...
  • Page 39 Index –V– visual fault locator (VFL), 26 –W– warnings, 3 Wavelength, 10...
  • Page 40 DTX Compact OTDR Modules Users Manual...

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