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Pro OFT-3 User Manual

Optical time domain reflectometer
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Optical Time Domain Reflectometer
Information contained in this manual is believed to be accurate and reliable. However, no responsibility is
assumed by Precision Rate Optics Inc. for its use nor for any infringements of patents or other rights of third
parties that may result from its use. No license is granted by implication or otherwise under any patent rights of
Precision Rate Optics Inc.
The information contained in the publications is subject to change without notice.
OFT-3
User's Guide
Revision A
02/2014
Copyright 2014

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  • Page 1 OFT-3 Optical Time Domain Reflectometer User's Guide Revision A 02/2014 Information contained in this manual is believed to be accurate and reliable. However, no responsibility is assumed by Precision Rate Optics Inc. for its use nor for any infringements of patents or other rights of third parties that may result from its use.
  • Page 2 Chapter PAGE Using This Manual.…..…………........……............……………………1 Safety....…...........…….………......…………………...…………2 OFT-3 Quick Start Guide......................…….……..………4 Introduction …………..……....................…….……...……..6 OTDR Inspection and Identification..................………………...……7 Inspection Identification and Configuration OFT-3 Depscription…….………....................……..……….8 OTDR Physical Description/Packaging Front Panel Top Plate Home Screen Display Power Requirements OTDR Operations..........…….....................11 Key Pad Entering OTDR Function...
  • Page 3 Chapter PAGE Table of Contents (Continued) Loss Measurements 2 Point Loss dB/km Optical Return Loss Basic Splice Loss Least Square Approximation (LSA) 7.10 Loss Measurement Settings Setting Basic Splice Loss Measurement Areas Splice Loss Adjustment Areas Splice Loss Adjustment Positions LSA Examples 7.11 Event Analysis...

  • Page 4: Table Of Contents

    Table of Contents Chapter PAGE (Continued) File Management..............................30 File Management Description File Management Screen File Management File Menu File Management File Drop Down Menu File Management Edit Drop Down Menu File Management View/Help Drop Down Menu File Management Operation Saving a Trace Open/View a Trace Delete a File Upload a Trace to Certification...
  • Page 5 Precision Rate Optics Inc. OFT-3 User's Guide...
  • Page 6 Chapter 1 Using This Manual This manual contains operation information for the Precision Rate Optics Inc. OFT-3 Optical Time Domain Reflectometer. This OTDR may be operated by using the touch scree or the onboard key pad. The touch screen is a resistive style screen and only proper stylus devices should be used when operating the OTDR using the touch screen capability.
  • Page 7 Do not use the AC adapter when there are signs of damage to the enclosure or cord ¾ Ensure the correct charger is being used for the local line voltage ¾ Do not use any other charger than the one provided with this instrument. ¾ OFT-3 User's Guide Rev A 2/7/14...
  • Page 8 If a live fiber is connected to the OTDR and a scan is attempted, a warning dialog will be displayed as in fig. 2.1. Immediately remove the live fiber from the OTDR and press select to continue testing. Fig 2.1 OFT-3 User's Guide Rev A 2/7/14...
  • Page 9 Real-Time, 15 seconds, 60 seconds, 2, 4 8 or 20 minutes. Press to exit the menu mode and hide the menu bar. Press (Scan) to start a trace. Pressing the again will stop a trace. OFT-3 User's Guide Rev A 2/7/14...
  • Page 10 (file storage) icon and press . Press , press and with save highlight press . Use the touchscreen keyboard to enter the file name and touch save. OFT-3 User's Guide Rev A 2/7/14...
  • Page 11 Chapter 4 Introduction OFT-3 User's Guide Rev A 2/7/14...
  • Page 12 The instrument’s history is filed at the factory by model/part number and serial number. The unit's serial number is also located on the top plate just above the USB Port. Fig 5.1 OFT-3 User's Guide Rev A 2/7/14...
  • Page 13 6.1 OTDR Physical Package/Description Instrument Enclosure The ODM OFT-3 is packaged in a rugged housing which is further protected with a rubberized boot. Although the front panel is weather resistant, care must be taken to avoid liquids and contaminants around the fragile optical and electrical connectors, and the glass display. Use a mild cleaning agent and soft damp cloth to clean up the panels and the outside case.
  • Page 14 These icons may also be selected with the touch screen function. 6.3 Power Requirements The OFT-3 is equipped with a 100-240V-0.3A input and 9V, 0.67A center positive output universal AC/DC battery charger. This charger is supplied with interchangeable mains for US, Great Britain, Europe and Australia The unit is shipped with 4-AA NiMH batteries (2700mA hours).
  • Page 15 ¾ Do not use any other charger than the one provided with this instrument. Failure to follow these caution statements could cause unsafe conditions for the operator and equipment and may void the warranty. OFT-3 User's Guide Rev A 2/7/14...
  • Page 16 While in the trace mode the directional buttons are used to move the cursors and in the Menu mode, they focus of these buttons is placed on the movement between icons or used to change settings. OFT-3 User's Guide Rev A 2/7/14...
  • Page 17 Cycles through available wavelengths Pulse Width Cycles through available pulse widths Range Cycles through available test ranges Averaging Cycles through averaging times Index of Refraction Opens the Index of Refraction entry screen Fig 7.1 OFT-3 User's Guide Rev A 2/7/14...
  • Page 18 All the test parameters may be change by touching the value on the touch screen. A long touch in the test pa- rameter section of the screen will open the parameter settings page. A/B cursor, zoom, loss method and scan may all be operated with the touch screen. OFT-3 User's Guide Rev A 2/7/14...
  • Page 19 When using the touch screen feature, only a single touch is required to set trace parameters. Note An arrow at the beginning or end of a list indicates additional setting are available. A black square at either end indicated the end of the list. OFT-3 User's Guide Rev A 2/7/14...
  • Page 20 Once the desired time is entered, press selected. Exit Parameter Setting Screen Press the menu button or touch Return to exit the parameter page. OFT-3 User's Guide Rev A 2/7/14...
  • Page 21 Press the AutoTest button and the unit will set the average time to short, the appropriate pulse width and range parameters for the fiber under test. Note IOR is only accessible through the touch screen function. All other functions are accessible through both the touch screen and the key pad. OFT-3 User's Guide Rev A 2/7/14...
  • Page 22 To select the wavelength, press the menu button to display the menu at the top of the display. Use the LRUD buttons to highlight the Lambda (Wavelength) icon, press select to cycle through the available wavelengths and press the menu button again to hide the menu. OFT-3 User's Guide Rev A 2/7/14...
  • Page 23 Use the select button to cycle through the averaging times of RT (Real Time), 15, or 60 seconds, 2 or 4, 8 or 20 minutes. Scan Once all the proper settings have been entered, press the Scan button to take the trace. To stop the trace press the scan button again. OFT-3 User's Guide Rev A 2/7/14...
  • Page 24 OTDR screen and in the E (End of Fiber) row in the TYPE column is an optical return loss based on the entire link. It is the total accumulated light reflected back to the source along the telecommunication link. OFT-3 User's Guide Rev A 2/7/14...
  • Page 25 Press the menu button at any time to escape the splice lose settings sequence. Note It is necessary to set these areas in clear backscatter to acquire the most accurate measurements, they must not include other events. OFT-3 User's Guide Rev A 2/7/14...
  • Page 26 Splice Zone Splice Zone Indication Indication LSA Splice Loss Basic Splice Loss Measurements Measurements Fig 7.4 Splice Loss Adjustment Positions Splice Loss Position Splice Loss Position Splice Loss Position Splice Loss Position Fig 7.5 OFT-3 User's Guide Rev A 2/7/14...
  • Page 27 Fig 7.7 Proper LSA Setting: The LSA area and cursor are set properly. The green LSA indicator line is over laying the back scatter of the trace properly. Fig 7.8 OFT-3 User's Guide Rev A 2/7/14...
  • Page 28 If a -50dB reflectance is acceptable, set the threshold to 50. If -50dB is the fail point, set the threshold to 50.5. Link: If a 20dB, link loss is acceptable, set the threshold to 20. If 20db link loss is the fail point, set the threshold to 19.5. OFT-3 User's Guide Rev A 2/7/14...
  • Page 29 0.5dB. Longer pulse widths, and averaging help to lower the number of false events. Highest sensitivity settings should only be used for traces with high signal level, low noise, long pulse and long average. Event Analysis Screen Event Table Fib-R-Map Schematic View Trace Parameters Event Map Fig 7.9 OFT-3 User's Guide Rev A 2/7/14...
  • Page 30 System ORL dB Per/Km EOF Location Link Loss Between Events Fig 7.11 Note Information in the red outlined area is for individual events. Information in the blue outlined area is for the fiber link. OFT-3 User's Guide Rev A 2/7/14...
  • Page 31 Event Type is the type of event or the ORL measurement. If the event has no reflection, “splc” will be displayed and if the event contains a reflection, the event reflectance value will be displayed. For the last event which is labeled "E" in the # column, the value displayed is the system ORL. OFT-3 User's Guide Rev A 2/7/14...
  • Page 32 The file menu may be pulled down with the stylus the same as the menu on the main trace screen. Once the file menu is open, it is fully operable with the touch screen function. OFT-3 User's Guide Rev A 2/7/14...
  • Page 33 View offers the user the opportunity to move to the file manager operation from the projects page. With view highlighted, press select to drop down the files tab and press select to move to the file management page. For onboard help pages, highlight the help tab and press select. Fig 8.5 OFT-3 User's Guide Rev A 2/7/14...
  • Page 34 To make temporary changes to event sensitivity or thresholds, open the parameters settings page. Exit Project Management To exit the file, press menu, press select, use the down button to highlight exit and press select. OFT-3 User's Guide Rev A 2/7/14...

  • Page 35: File Management

    Selecting save will open a file naming window. Open will open the highlighted trace file, delete, permanently removes the highlighted file. Use exit to leave the file manager and return to the trace screen. Fig 9.3 OFT-3 User's Guide Rev A 2/7/14...

  • Page 36: File Management Edit Drop Down Menu

    Ensure the proper file is selected as once deleted, the file cannot be recalled. Delete must be held for approximately 1 second to complete the delete function. OFT-3 User's Guide Rev A 2/7/14...

  • Page 37: Upload A Trace To Certification

    QWERTY keyboard. Use the keyboard to rename the project and touch save. Exit File Management To exit the file, press menu, select, use the down button to highlight exit and press select. OFT-3 User's Guide Rev A 2/7/14...

  • Page 38: Video Scope

    To operate the icons on the video scope, the video scope must be in the live state of operation and in the menu mode. Home Press the menu button, use the left and right buttons to highlight the home icon and press select to return to the home Screen. OFT-3 User's Guide Rev A 2/7/14...

  • Page 39: Viewing A Connector

    Use the appropriate table from below to grade the connector end face. 2, 3, 5 and 10 micron contaminant examples are displayed just below the connect image on the video scope display. OFT-3 User's Guide Rev A 2/7/14...

  • Page 40: Fiber End Face Criteria Table For Angled Pc Polished Connectors

    25µm to 120µm 5 from 2µm to 5µm None > 3µm None > 5µm Adhesive Zone No limit No limit 120µm to 130µm Contact Zone 130µm to 250µm No limit None ≥ 10 µm OFT-3 User's Guide Rev A 2/7/14...

  • Page 41: Pausing Image Scan

    Exiting Video Scope Operation Enter the menu mode, use the LRUD buttons to highlight the Home icon and press select. OFT-3 User's Guide Rev A 2/7/14...

  • Page 42: Otdr Specifications

    FC, ST or SC Interchangeable Universal Power Adapter w/US, UK, CE, and AU Plugs, Interchangeable FC, ST and SC Accessories Provided adapters, Certification Software, Rubber Boot, USB Cable, Manual PRO reserves the right to change specifications without notice. OFT-3 User's Guide Rev A 2/7/14...

  • Page 43: Repair/Warranty

    It is the customer’s responsibility to understand all the instructions and specifications prior to operating this instrument. This warranty does not extend to any loss or damage consequent to the failure of the warranted product. OFT-3 User's Guide Rev A 2/7/14...

  • Page 44: Version Control

    The instrument firmware version is accessible in the lower right corner of the home screen. The version changes and approximate release dates are as follows. OTDR V1.0.0.0 - 02/2014 - Original release OFT-3 User's Guide Rev A 2/7/14...

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