Textron GREENLEE 920XC-20C Instruction Manual

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INSTRUCTION MANUAL

920XC-20C • 920XC-20M

920XC-30F • 920XC-30P

Handheld OTDRs

Read and understand all of the instructions

and safety information in this manual

before operating or servicing this tool.

52026943 REV 5

6/10

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Summary of Contents for Textron GREENLEE 920XC-20C

Page 1 INSTRUCTION MANUAL 920XC-20C • 920XC-20M 920XC-30F • 920XC-30P Handheld OTDRs Read and understand all of the instructions and safety information in this manual before operating or servicing this tool. Register this product at www.greenlee.com 52026943 REV 5 © 2010 Greenlee Textron Inc. 6/10...
Page 2 Wavelength Configuration ....................23 Measurement Mode Configuration ..................24 VFL Configuration (920XC-20C only) ................24 Length Units ........................25 Index of Refraction (IOR) Configuration ................25 Scatter Coefficient Configuration ..................26 Non-reflection Threshold Configuration ................26 Greenlee / A Textron Company...
Page 3 Table of Contents Reflection Threshold Configuration .................. 27 End Threshold Configuration .................... 27 Delete File ......................... 28 Time Configuration ......................28 Auto Off Configuration ..................... 29 Language Configuration ....................29 Contrast Adjustment of LCD ..................... 30 Color Mode Setting ......................30 Default Setting ........................
Page 4 Printing ........................... 57 Printing Options ........................ 57 Printing Setup ........................57 Printing Preview ........................ 58 Printing ..........................59 Batch Edit .......................... 59 Batch Print ......................... 60 Batch Print Preview ......................61 Exit Software .......................... 62 Appendix A. Quick Reference Guide and Menu Shortcuts Greenlee / A Textron Company...
Page 5 All specifications are nominal and may change as design improvements occur. Greenlee Textron Inc. shall not be liable for damages resulting from misapplication or misuse of its products. fiberTOOLS is a trademark of Greenlee Textron Inc.
Page 6 Failure to understand how to safely operate this tool could result in an accident causing serious injury or death. Electric shock hazard: Contact with live circuits could result in severe injury or death. Class 3 appliance Greenlee / A Textron Company...
Page 7 Important Safety Information Electric shock hazard: • Do not operate in an explosive atmosphere such as in the presence of flammable gases or fumes. • Before applying power, verify that the unit is set to match the available line voltage. Failure to observe this warning could result in severe injury or death.
Page 8 • Do not expose the unit to extremes in temperature or high humidity. Refer to “Specifications.” • Turn the unit off, disconnect from power, and make sure the laser source is off before cleaning. Failure to observe these precautions may result in injury and may damage the unit. Greenlee / A Textron Company...
Page 9 Section 1. Introduction Greenlee’s 920XC handheld OTDRs can make an assessment of one single optical fiber or a whole optical fiber chain. In addition, the user can directly observe loss and events distribution of an optical fiber chain. The 920XC tools check the transmission quality of optical fiber through the measurement of backscatter.
Page 10 Greenlee / A Textron Company...
Page 11 Section 2. Basic Operation This section describes the basic operation of the 920XC instruments. Specific operations are explained in detail in Section 3 of this manual. Instrument Interface Description CHARGE POWER OTDR RS-232 Figure 2-1. Interface Panel Charge Indicator: When lit, measurement power is charging. Power Indicator: When lit, measurement power is on.
Page 12 0 °F to 55 °C (32 °F to 131 °F). Battery will not be fully charged or may be damaged if the charging temperature is beyond the above range, which may shorten battery life. • A quick charge takes 3 hours. Greenlee / A Textron Company...
Page 13 Basic Operation Keypad Functions Figure 2-2. 920XC Keypad On/Off: Press to turn power on or off to the instrument. 2. Run/Stop: • Under GUI, press to start measurement. • While testing, press to stop measurement. 3. Enter: • Under GUI, press to confirm the current operation. •...
Page 14 Greenlee / A Textron Company...
Page 15 Section 3. Basic OTDR Information Principle of OTDRs An OTDR (Optical Time Domain Reflectometer) is a measurement instrument for identifying optical fiber transmission features. The OTDR is used to measure the overall attenuation of a fiber optic link and to provide details relating to the position of each event in that link. Events include splices, connectors, bends, and optical components.
Page 16 • Non-reflection events. • End of optical fiber. • Through scanning the first loss event that is larger than the end threshold, identifies the end of optical fiber. • Events list: Event type, loss, reflection, and distance. Greenlee / A Textron Company...
Page 17 Basic OTDR Information Trace Display Screen The trace displays on the 920XC screen (Figure 3-3). Figure 3-3. Trace Display Screen Trace Display Window This window displays the trace after one measurement. Definition of trace: After one measurement, the reflection power diagram will be displayed as a distance function.
Page 18 • Refl.: Magnitude of reflection. • Ins.L.: Loss of inserted event. • Attn.: Attenuation characteristic from one event point to the current event. • Cum.L.: Cumulative loss, calculating from beginning point to the current event. Greenlee / A Textron Company...
Page 19 Basic OTDR Information Marker A/B Information A marker is used to mark and analyze a single event, trace section, and distance. Distance, attenuation, and loss at a marker or between markers will be displayed in marker information (Figure 3-7). Figure 3-7. Marker A/B Information The following parameters are measured between marker A and B.
Page 20 Parameter Configuration Correct parameter configuration is necessary for accurate measurements. Use p and q to highlight (i.e., parameter configuration on the menu bar), and then press Enter (Figure 3-9). Press to exit. Figure 3-9. Parameter Configuration Greenlee / A Textron Company...
Page 21 Basic OTDR Information Definitions of Measurement Parameters Parameter Definition Range Length of optical fiber relevant to the trace Pulse Width Width of laser pulse sent out from OTDR to optical fiber Average Time Select suitable testing time Wavelength Select laser wavelength for measurement Measurement Mode Select mode for measurement Power on or off for visible laser...
Page 22 Therefore, when measuring long-distance optical fiber, a long average time should be selected in order to review events at the long-distance end. Under the parameter configuration menu use p and q to highlight “Avg. Time.” Press Enter to confirm (Figure 3-12). Press to exit. Greenlee / A Textron Company...
Page 23 Basic OTDR Information Figure 3-12. Average Time Configuration Use p and q to highlight the desired time. Press Enter to confirm. Notes: • There are five levels of predefined average time: 15 s, 30 s, 1 min, 2 min, and 3 min. •...
Page 24 Enter to select “CW,” “1Hz,” or “Off.” Press to exit. When VFL is on, will be displayed under the icon in the menu bar on the right (Figure 3-15). Figure 3-15. VFL Configuration Greenlee / A Textron Company...
Page 25 Basic OTDR Information Length Units Under the parameter configuration menu use p and q to highlight “Length Units.” Press Enter to select the desired units of measurement (Figure 3-16). Press to exit. Figure 3-16. Length Units Index of Refraction (IOR) Configuration Because IOR is a key factor affecting the speed of laser transmission in optical fiber, the IOR configuration has a direct impact on the accuracy of measurement.
Page 26 Figure 3-19. Non-reflection Threshold Configuration Use t and u to adjust the position of the highlighted area. Use p and q to change the digits. After setting, press Enter to confirm. Note: The default setting is “0.20 dB.” Greenlee / A Textron Company...
Page 27 Basic OTDR Information Reflection Threshold Configuration This configuration has direct impact on reflection events listing. Only reflection events ≥ to this threshold will be displayed in the events list. Under the parameter configuration menu use p and q to highlight “Refl. Thre.” Press Enter to enter a value (Figure 3-20).
Page 28 (Figure 3-23). Press to exit. Figure 3-23. Time Configuration Use t and u to adjust the position of the highlighted area. Use p and q to change the digits. After setting, press Enter to confirm. Greenlee / A Textron Company...
Page 29 Basic OTDR Information Auto Off Configuration This function conserves battery power. When auto off is enabled, the instrument will automatically power off when idle for 5 minutes. Under the parameter configuration menu use p and q to highlight “Auto Off.” Press Enter to switch between “Off”...
Page 30 Under the parameter configuration menu use p and q to highlight “Color Mode.” Press Enter to choose a different mode (Figure 3-27). Press to exit. Figure 3-27. Color Mode Setting Use p and q to highlight the desired color mode setting. Press Enter to confirm the selection. Greenlee / A Textron Company...
Page 31 Basic OTDR Information Default Setting This function is used to set the OTDR parameters to factory settings. These parameters include: range, pulse width, average time, IOR, non-reflection threshold, reflection threshold, end threshold, and scatter coefficient. Under the parameter configuration menu use p and q to highlight “Load Default.” Press Enter to enter (Figure 3-28).
Page 32 When the instrument is powered on and powered through the AC/DC adapter, the internal battery is automatically recharged. The icons mean the following: When the 920XC is powered by the internal rechargeable battery, the power level of the battery is shown on the LCD: Greenlee / A Textron Company...
Page 33 Section 4. Trace Measurement and Processing of Existing Traces Graphical User Interface (GUI) Instructions When the 920XC is first turned on, an introductory screen appears on the LCD (Figure 4-1). Figure 4-1. Power On Screen Three seconds after the instrument is turned on, a quick reference screen appears (Figure 4-2). Figure 4-2.
Page 34 3. Interface: • Total: 00:30: Measure time, which is set by user, is 30 seconds. • Passed: 00:16: Total measurement time has passed 16 seconds. • : Blinking of this icon means laser is active. Greenlee / A Textron Company...
Page 35 Trace Measurement and Processing of Existing Traces Note: After a certain period of time, the trace displays on the GUI. The trace in the figure below is a trace during measurement, which will be refreshed for every certain period of time to demonstrate the whole process in realtime.
Page 36 3. Refer to “Switching between Marker A/B” above for more information. Zoom in Trace Horizontally Under GUI (Figure 4-4) use p and q to highlight , and then press Enter to zoom in the trace horizontally. Greenlee / A Textron Company...
Page 37 Trace Measurement and Processing of Existing Traces Zoom out Trace Vertically To review the details of an event more closely, follow these steps: 1. Under GUI (Figure 4-4) use p and q to highlight , and then press Enter to zoom out the trace vertically.
Page 38 Use p and q to highlight the trace, and then use t and u to choose “Open” or “Cancel.” Press Enter to confirm. Memory space: “118/300” means that total memory space is 300 files; 118 files have been saved so far. Greenlee / A Textron Company...
Page 39 Trace Measurement and Processing of Existing Traces Upload Saved Traces Saved traces can be uploaded to a PC with the included Trace Viewer software. Then traces can be further processed on a PC. 1. Install the software and run. Refer to Section 7. 2.
Page 40 2. Use t and u to move to the parameter to be changed (Figure 4-9), and then press Enter. Use p and q to change the Ref value. Select “Averaging” to choose Averaging testing. 4. Press “OK” to exit the parameter configuration menu. Figure 4-9. Alter Measurements in Realtime Testing Greenlee / A Textron Company...
Page 41 Section 5. Calibration and Maintenance Electric shock hazard: • Do not expose the unit to extremes in temperature or high humidity. Refer to “Specifications.” • Turn the unit off, disconnect from power, and make sure the laser source is off before cleaning. Failure to observe these precautions could result in severe injury or death. Calibration Requirements Calibration of the instrument is recommended every two years.
Page 42 • Cleaning swabs • Condensed air Procedure for Cleaning Interfaces and Connectors 1. Unscrew the adapter from the bulkhead. 2. Carefully clean the bulkhead and the inside of the adapter. 3. Screw the adapter back onto the bulkhead. Figure 5-2. Flange Greenlee / A Textron Company...
Page 43 Section 6. Specifications Optical Specifications 920XC-20C 920XC-20M 920XC-30F 920XC-30P Dynamic Range (db) 18/22 38/37/37 Wavelength (±20 nm) 1310/1550 850/1300 1310/1550/1625 1310/1490/1550 Display Type Color Fiber Type Single-mode Multi-mode Single-mode Selectable Ranges (km) 0.3/1.3/2.5/5/10/20/40/ @ 850 nm: 0.3/1.3/2.5/5/10/20/40/ 80/160/240 0.1/0.3/0.5/1.3/2.5/5/10; 80/160/240 @ 1300 nm: 0.1/0.3/0.5/ 1.3/2.5/5/10/20/40/80 Pulse Widths (ns)
Page 44 Greenlee / A Textron Company...
Page 45 Section 7. Trace Viewer Software Trace Viewer software is an application developed for the 920XC OTDR. It allows the previously stored measurement records in the instrument to be uploaded to a PC and to be displayed, saved, or printed. This software provides a convenient data management function, which includes: editing, browsing, saving, backup, printing, and ASCII format output.
Page 46 3. Trace display window (spectral line) 4. Events list window (Events Table) 5. Measurement and analysis parameter window (Parameter Sheet) 6. Fiber information window (fiber section information) 7. Fiber chain information window (fiber chain information) 8. Status bar Greenlee / A Textron Company...
Page 47 Trace Viewer Software Menu, Tool Bar, and Status Bar The main GUI of the 920XC Trace Viewer software is shown in Figure 7-1. The menu bar includes: file, edit, view, window, and help. The tool bar is right below the menu bar. Use the mouse pointer to highlight a tool, and the operation reference will pop up.
Page 48 Figure 7-1. Other submenus take the selected window as the current active window. Figure 7-5. Window Menu Help (H) The “Help” menu (Figure 7-6) displays the version of the software. Figure 7-6. Help Menu Greenlee / A Textron Company...
Page 49 Trace Viewer Software Information Subwindows Trace Display Window Click “Open…” under the “File” menu to open a trace file, and a trace curve will display in the trace display window (Figure 7-7). The x-axis displays the distance (km); the y-axis represents the backscatter power (dB).
Page 50 Measurement parameters include: range, pulse width, average time, and wavelength. Analysis parameters include: IOR, scattering coefficient, end threshold, non-reflection threshold, reflection threshold, and samp. dist. For definitions of these parameters, refer to “Parameter Configuration” in Section 3 of this manual. Figure 7-9. Parameters Greenlee / A Textron Company...
Page 51 Trace Viewer Software Fiber Section Information Window This window (Figure 7-10) displays the distance between marker A and B, attenuation coefficient, and loss information. The two point loss is the difference of vertical power between marker A and B. Two point attenuation is the two point loss of marker A and B divided by the horizontal distance between marker A and B.
Page 52 Zoom out trace horizontally Zoom in trace horizontally Zoom out trace vertically Zoom in trace vertically Full screen Analyze insertion loss (the five-point measurement to test the insertion loss) Analyze reflectance Lock marker A and B Display version Greenlee / A Textron Company...
Page 53 Trace Viewer Software Open Trace File Select “Open trace file…” under the “File” menu, and choose the trace file to be reviewed (Figure 7-13). Select “Tile” under the “Window” menu to automatically rearrange the subwindows as shown in the figure below. Figure 7-13.
Page 54 The distance between marker A and B should be considered as one section of optical fiber (Figure 7-15). Figure 7-15. Fiber Section Information Fiber Chain Information The distance from beginning to end should be considered as a fiber chain (Figure 7-16). Figure 7-16. Fiber Chain Information Greenlee / A Textron Company...
Page 55 Trace Viewer Software Review Events List The trace curve decreases at a fixed slope. Any sudden peak or drop should be considered an event. The 920XC acquires measured data automatically and creates the events list (Figure 7-17). Figure 7-17. Review Events List For details relating to the events list, refer to “Events List Window”...
Page 56 (due to inaccuracies caused by poor SNR or inadequate parameter configuration). Highlight the event to be deleted, and then select “Delete event” under the “Editing” menu. Events can also be deleted by clicking on the event to access a pop-up menu. Greenlee / A Textron Company...
Page 57 Trace Viewer Software Printing Printing Options Select “Printing options…” under the “File” menu (Figure 7-22), to select the contents to be printed. Figure 7-22. Printing Options Printing Setup Select “Printing setup” under the “File” menu (Figure 7-23) to select the printer, paper size, and printing orientation.
Page 58 Section 7 Printing Preview To preview the page before printing, select “Printing preview” under the “File” menu or click on the tool bar (Figure 7-24). Figure 7-24. Printing Preview Greenlee / A Textron Company...
Page 59 Trace Viewer Software Printing Select “Printing” under the “File” menu, or click on the tool bar (Figure 7-25). Figure 7-25. Printing Batch Edit The 920XC Trace Viewer software has a batch-edit function that allows users to edit the trace information of several trace files in the same folder at one time. Select “Batch Edit” under the “File”...
Page 60 The 920XC Trace Viewer software has a batch-print function that allows users to print several trace files in the same folder at one time. Select “Batch Print” under the “File” menu (Figure 7-27). Figure 7-27. Batch Print Greenlee / A Textron Company...
Page 61 Trace Viewer Software Batch Print Preview To preview before batch printing, select “batch print preview” under the “File” menu (Figure 7-28). Figure 7-28. Batch Print Preview 920XC-20C • 920XC-20M • 920XC-30F • 920XC-30P Instruction Manual...
Page 62 Section 7 Exit Software Press “Exit” under the “File” menu (Figure 7-29) to exit the Trace Viewer software. Figure 7-29. Exit Software Greenlee / A Textron Company...
Page 63 Appendix A. Quick Reference Guide and Menu Shortcuts Press to turn on the 920XC. in the menu bar and press Enter. Use to highlight Select range (usually auto), wavelength, and measure mode (usually averaging). Refer to the Instruction Manual for additional parameters. Acquire and View Trace Press once to acquire a trace.
Page 65 Authorized Distribution Brand： Website： Welcome to visit www.ameya360.com Contact Us： Address： 401 Building No.5, JiuGe Business Center, Lane 2301, Yishan Rd Minhang District, Shanghai , China Sales： Direct +86 (21) 6401-6692 Email amall@ameya360.com 800077892 Skype ameyasales1 ameyasales2 Customer Service： Email service@ameya360.com Partnership：...

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