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OFT-3 User's Guide Rev A 2/7/14

18

Set Range

To set the range, press the menu button and use the LRUD buttons to highlight the range icon. Use the select 

button to cycled to the desired range.  

Set Pulse Width

To set the pulse width press the menu button and use the LRUD buttons to highlight the pulse width icon. Use 

the select button to cycled to the desired pulse width

Set Averaging Time

To set the averaging time press the menu button and use the LRUD buttons to highlight the averaging icon. 

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.

Chapter 7   OTDR Operation

Range

5ns

10ns

30ns

100ns 300ns

10µ

20µ

250m

1km

4km

16km

64km

128km

256km

Pulse Width

Note

When setting the range and pulse width, it is necessary to keep in mind that it may not be beneficial to use 

certain pulse widths with some ranges.  For this reason not all pulse widths are available for use with all rangers.  

Below is a chart that shows the what pulse widths are available with each range.

Summary of Contents for OFT-3

Page 1: ...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...

Page 2: ...nts 7 OTDR Operations 11 7 1 Key Pad 7 2 Entering OTDR Function 7 3 Icon Definitions 7 4 Main OTDR screen 7 5 OTDR Parameter Settings Screen Trace Parameters Event Table Fib0R Map Sensitivity Settings...

Page 3: ...ettings Sensitivity Settings Event Analysis Screen Fib R Map Event Table Table Definitions 8 Project Management 27 8 1 Project Management Description Project Management Screen Project Management File...

Page 4: ...o Scope 10 2 Video Scope Display 10 3 Video Scope Icon Menu Home Pass Fail Grading Overlay Pass Fail Label Brightness Save Image Load Image Cal Help 10 4 Viewing a Connector 10 5 Using Grading rings F...

Page 5: ...OFT 3 User s Guide Precision Rate Optics Inc...

Page 6: ...cause personal injury Caution A caution alerts to situations that may cause damage to the equipment or produce poor testing conditions result ing in inaccurate test results Note A special annotation...

Page 7: ...iber optic interface of optical test equipment to do so could expose the user to laser radiation and could result in personal injury Warning To Prevent Fire or Shock Hazard Chapter 3 of this manual is...

Page 8: ...the unit ensure that all proper cleaning procedures have been followed Use UPC Finish Connectors Only DO NOT insert APC connectors into the optical ports Caution The OTDR is equipped with a protection...

Page 9: ...Autotest will set the averaging time to 60sec If approximate fiber length is known Set the Wavelength as above and further set the range pulse width and averaging time Press to open the icon menu use...

Page 10: ...ess use the left and right buttons to highlight the schematic view icon and press To save a trace touch the icon and use the left or right buttons to highlight the file storage icon and press Press pr...

Page 11: ...OFT 3 User s Guide Rev A 2 7 14 6 Chapter 4 Introduction...

Page 12: ...cable 4 Manual and Certification software on CD 5 Set of interchangeable adapters SC ST and FC Fig 5 1 Chapter 5 Inspection and Identification 5 1 Inspection The instrument s Model Part Number Serial...

Page 13: ...en 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 cas...

Page 14: ...Time Domain Icon Select this icon to open the OTDR function Firmware Version Touch Screen Tip The home page icons are highlighted by using the left and right buttons pressing the select button will o...

Page 15: ...low these caution statements could cause unsafe conditions for the operator and equipment and may void the warranty 6 4 Battery Replacement To replace the batteries remove the OTDR from the protective...

Page 16: ...also back out of most menu selected screens In the project folder and file manager it opens the file edit menu bar When the menu button is pressed and the menu is displayed at the top of the screen th...

Page 17: ...SA Splice markers Help Opens the context sensitive help menu Lambda Wavelength Cycles through available wavelengths Pulse Width Cycles through available pulse widths Range Cycles through available tes...

Page 18: ...rameters Displays test parameters of wave length averaging time pulse width range and ORL Touch the symbol or value to cycle through the avail able settings A B Cursor Status Select Displays the 2pt l...

Page 19: ...buttons to change parameter values There are two additional setting in this area that are not available on the main OTDR screen distance unit and pulse width unit Event Table Fib R Map Sensitivity Set...

Page 20: ...es once a categories is highlighted press select to change the focus of the LRUD buttons Use the up down button to make changes to the highlighted digit and the left right buttons to move the another...

Page 21: ...n board QWERTY keyboard to enter the new IOR value and touch save Set Wavelength To select the wavelength press the menu button to display the menu at the top of the display Use the LRUD buttons to hi...

Page 22: ...t Use the on board keyboard to enter the new IOR value and touch save Set Wavelength To select the wavelength press the menu button to display the menu at the top of the display Use the LRUD buttons t...

Page 23: ...ging icon 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 t...

Page 24: ...2 Point loss 2 Point loss measurements take into account the difference in vertical height between where the A and B cursors cross the fiber trace to determine loss This information is located on the...

Page 25: ...as can not include other events such as reflective or splice events Set a cursor at the beginning of an event and set splice loss measurement areas as directed below for accurate splice loss measureme...

Page 26: ...ion 2 LSA Splice Loss Measurement Areas LSA Splice Loss Measurements Fig 7 4 Basic Splice Loss Measurements Basic Splice Loss Measurement Areas Splice Zone Indication Active Splice Zone Cursor Active...

Page 27: ...rly Fig 7 6 The LSA area and cursor are set too late The left most green LSA indicator line is not over laying the back scatter of the trace Fig 7 7 The LSA area and cursor are set properly The green...

Page 28: ...ght buttons to highlight the settings icon and press select The cursor is the yellow highlighted area If the yellow cursor is on a value that is the current selection that block will be highlighted gr...

Page 29: ...t setting Use the LRUD buttons to highlight the desired setting and press select To exit the parameter screen press the menu button The lowest setting possible should be used to help filter out any fa...

Page 30: ...ue Fig 7 11 Chapter 7 OTDR Operation System ORL Link Data Note The Link is the last item in the schematic view It is labeled E in the event number position The loss value just prior to this item is th...

Page 31: ...d for the Pass Fail feature The E event will display LINK as this is not an event that would have meaning The event that is deemed the EOF will normally display a large loss as this loss will be great...

Page 32: ...ed to the NONE folder Fig 8 1 Project Folder List Project Details Properties Project Management File Menu The file menu for project management may be operated with the touch screen however this manual...

Page 33: ...d 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 Fig 8 4 Project Management File Dr...

Page 34: ...is connected to the computer with the USB cable Highlight the project to be uploaded press menu to open file manager header use the right button to highlight edit press select press the down button to...

Page 35: ...he keypad To open the file menu press the menu button Press select to open the file drop down menu or the left or right buttons to move in through the file menu File Management File Drop Down Menu To...

Page 36: ...d press select 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 File Management Edit Drop D...

Page 37: ...oad and press select The file will be uploaded to the target folder selected on the computer with the software Rename a Trace File To rename a trace file have the file to be renamed highlighted Press...

Page 38: ...g Yellow 130um Ring Green Home Icon Pass Fail Grading Ring Overlay Icon Pass Fail Label Icon Brightness Adjustment Icon Save Image Icon Live View Pause View Indicator Contaminant Scale 10 3 Video Scop...

Page 39: ...in will increment to the next image storage position Cal This is not a user accessible feature Help Press the menu button use the left and right buttons to highlight the help icon and press select to...

Page 40: ...ameter Allowable Scratches Width Allowable Defects Diameter A Critical Zone 0 m to 25 m None None B Cladding Zone 25 m to 120 m No limit 3 m None 3 m No Limit 2 m 5 from 2 m to 5 m None 5 m C Adhesive...

Page 41: ...later viewing or to be included in test reports generated with the Certification reporting software To store an image enter the menu mode use the LRUD buttons to highlight the save image icon and pres...

Page 42: ...Real time Refresh Rate 2 Hz Group Index of Refraction GIR 1 024 2 048 Linearity 05 dB dB Memory Capacity 1000 Memory Type Internal Power Supply Charger Universal Battery 4hr typ Storage Temperature 20...

Page 43: ...be free of defects in workmanship and material for a period of one 1 year from the date of delivery This warranty does not apply to expendable parts such as batteries or optical panel connectors nor t...

Page 44: ...continuous improvement the upgrade of the features and performance of this instrument are an on going process The instrument firmware version is accessible in the lower right corner of the home screen...

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