XtendLan OTDR User Manual

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User’s Manual for OTDR

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OTDR

(Optical time-domain reflectometer)

User’s Manual

User’s Manual for OTDR

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Safety Instructions

During each stage of operation of this instrument, please always observe the following safety instructions. Not taking any safety precautions or following the instructions will violate the safety standards of design, manufacturing and application of these instruments. In no case will XtendLan bear the responsibilities forconsequences incurred by violation of the following instructions.

GENERAL

This product is a Safety Class 3 instrument. The protective features of this product may be impaired if it is used in a manner not specified in the operation instrument.

Environmental conditions

It is designed to operate at a maximum relative humidity of 95% and at altitudes of up to 2000 meters. Refer to the specifications tables.

Before applying power

Verify that the product is set to match the available line voltage, the correct fuse is installed, and all safety precautions are taken. Note the instrument’s external markings described under Symbols.

Do not operate in an explosive atmosphere

Do not operate the instrument in the presence of flammable gases or fumes.

Do not remove the instrument cover

Operating personnel must not remove instrument covers. Component replacement and internal adjustments must be made only by qualified service personnel. Instrument that appears damaged or defective should be made inoperative and secured against unintended operation until they can be repaired by qualified service personnel.

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Safety Terms Used in This Manual

The WARNING sign denotes a hazard. It calls attention to a

procedure, practice, or the like, which, if not correctly performed or adhered to, could result in personnel injury. Do not proceed beyond a WARNING sign until the indicated conditions are fully understood and met.

The CAUTION sign denotes a hazard. It calls attention to an

operating procedure, or the like, which, if not correctly performed or adhered to, could result in damage to or destruction of part or all of the product. Do not proceed beyond a CAUTION sign until the indicated conditions are fully understood and met.

The NOTE sign information that may be beneficial during the use and maintenance of the instrument.

 OTDR is a laser instrument. Users should avoid looking directly into the optic

output. And the use of microscope or magnifier should also be avoided, for the use of such devices can focus a highly intense beam onto the retina, which may result in permanent eye damage

 Make sure that the optical fiber or cable is not in use and there is no laser beam

in the fiber before testing via OTDR. Otherwise, it may result in imprecise test trace, even permanent damage for the OTDR

Battery: Battery for this instrument is rechargeable NiMH battery. If unused for a long time, battery should be recharged before being used. If the instrument is left idle for more than two months, it should be recharged to maintain adequate battery volume. Do not recharge

User’s Manual for OTDR

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batteries for more than 8 hours. Do not take batteries out without technical staff’s help. Do not expose batteries to fire or intense heat. Do not open or mutilate batteries. Avoid touching the electrolyte in the batteries, which is corrosive and may cause injuries to eyes, skin or damage to clothes.

External Power: OTDR from XtendLan support external power. Power requirements: DC

13.8V/1.2A.

Laser Radiation:To avoid serious eye injury, never look directly into the optical outputs of fiber optic network equipment, test equipment, patch cords, or test jumpers.

 Always avoid looking directly into the optical output port, when the instrument

is working

 Always replace protective dust cap on the detector port when the instrument is

not being used

 Always avoid looking directly at unconnected end of optic fiber in testing and

make the unconnected end pointing at a non-reflective object, if possible

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Table of Contents

1.General Information.........................................................................................................1

1.1 Scope of this Manual....................................................................................................1

1.2 Unpacking and Inspection............................................................................................1

1.3 Introduction..................................................................................................................1

2. Basic Operation................................................................................................................4

2.1 Foreword......................................................................................................................4

2.2 Instrument Interfaces Instructions................................................................................4

2.3 Use of Batteries............................................................................................................5

2.4 Keypad Functions.........................................................................................................7

3.Basic Information ofOTDR.............................................................................................8

3.1 Principle of OTDR.......................................................................................................8

3.2 Basic Definition and Classification of Events..............................................................8

3.2.1 Events...................................................................................................................8

3.2.1.1 Reflection Events............................................................................................9

3.2.1.2 Non-reflection Events.....................................................................................9

3.2.1.3 Inspection Events............................................................................................9

3.3 Measurement Application of OTDR ..........................................................................10

3.3.1 Measurement Contents of OTDR....................................................................10

3.3.2 Trace Analysis of OTDR...................................................................................10

3.4 Trace Display Screen ofOTDR..................................................................................11

3.4.1 Trace Display of OTDR....................................................................................11

3.4.2 Information Window of OTDR .......................................................................11

3.4.2.1 Measurement Trace Parameters....................................................................11

3.4.2.2 Events List....................................................................................................12

3.4.2.3 Information of Marker A/B...........................................................................13

3.4.2.4 Information of Fiber .....................................................................................14

3.4.3 Menu Bar and Window of OTDR....................................................................14

3.4.3.1 Menu Bar and Icons of OTDR......................................................................14

3.4.3.2 Parameter Configuration on OTDR Menu Bar.............................................15

3.4.3.2.1 Definitions of Measurement Parameters.................................................16

3.4.3.2.2 Range Configuration...............................................................................16

3.4.3.2.3 Pulse Width Configuration......................................................................17

3.4.3.2.4 Average Time Configuration...................................................................18

3.4.3.2.5 Wavelength Configuration......................................................................18

3.4.3.2.6 Measurement Mode Configuration.........................................................19

3.4.3.2.7 VFL Configuration(For OTDR-S20C only)............................................19

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3.4.3.2.8 Length Units Configuration....................................................................20

3.4.3.2.9 IOR Configuration..................................................................................20

3.4.3.2.10 Scatter Coefficient Configuration.........................................................21

3.4.3.2.11 Non Reflection Threshold Configuration..............................................21

3.4.3.2.12 Reflection Threshold Configuration.....................................................22

3.4.3.2.13 End Threshold Configuration................................................................23

3.4.3.2.14 Delete File.............................................................................................23

3.4.3.2.15 Time Configuration...............................................................................24

3.4.3.2.16 Auto off Configuration..........................................................................24

3.4.3.2.17 Language Configuration.......................................................................25

3.4.3.2.18 Contrast Adjustment of LCD Display...................................................25

3.4.3.2.19 Color Mode Setting...............................................................................26

3.4.3.2.20 Default Set............................................................................................26

3.4.3.2.21 Help.......................................................................................................27

3.5 Battery Recharge Status.............................................................................................29

4. Trace Measurement and Processing of Existing Traces..............................................30

4.1 Instructions on GUI....................................................................................................30

4.2 Trace Measurement of OTDR....................................................................................31

4.2.1 Trace Measurement- Connect Optical Fiber..................................................31

4.2.2 Trace Measurement - Parameter Configuration............................................31

4.2.3 Trace Measurement- Auto................................................................................31

4.2.4 Trace Measurement - Manual..........................................................................33

4.2.5 Trace Measurement -Reasons of Measurement Failures...............................33

4.3 Information Window..................................................................................................33

4.3.1 Switch between Information Window Items ..................................................34

4.3.2 Review Event List.............................................................................................34

4.3.3 Review Marker A/B Information.....................................................................34

4.3.3.1 Switching between Marker A/B....................................................................34

4.3.3.2 Information between Marker A/B................................................................34

4.4 Zoom in Trace Horizontally.......................................................................................34

4.5 Zoom out Trace Horizontally.....................................................................................35

4.6 Zoom in Trace Vertically............................................................................................35

4.7 Zoom out Trace Vertically..........................................................................................35

4.8 Re-analyze the trace...................................................................................................35

4.9 Save Trace..................................................................................................................36

4.10 Browse Saved Traces ...............................................................................................36

4.11 Upload Saved Traces................................................................................................37

4.12 Alter Measurement in Realtime Testing (For OTDR-S20C only)............................38

5. Maintenance and Calibration .......................................................................................39

Maintenance and Replacing of Batteries..........................................................................39

Cleaning of Interfaces......................................................................................................40

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 Effects of Cleaning Interfaces and Connectors............................................40

 Safety instructions to be followed before cleaning......................................40

 Tools for Cleaning Interfaces and Connectors.............................................40

 Preferred Procedure for Cleaning Interfaces and Connectors......................41

Calibration Requirements.................................................................................................41

6. Specifications..................................................................................................................42

7. Warranty Information...................................................................................................46

Terms of Warranty............................................................................................................46

Exclusions........................................................................................................................46

Warranty Registration ......................................................................................................46

Returning Instruments......................................................................................................46

Contacting Customer Service...........................................................................................47

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Table of Figure

Figure 2-1. Coping of OTDR-S13A/S15A /S20A/M20A.......................................................4

Figure 2-2. Coping of OTDR-S20C........................................................................................5

Figure 2-3. Operation Interface of OTDR...............................................................................7

Figure 3-1. Reflection Event...................................................................................................9

Figure 3-2. Non-reflection Event............................................................................................9

Figure 3-3. Trace Display Screen..........................................................................................11

Figure 3-4. Traces and Coordinates.......................................................................................11

Figure 3-5.(a) Measurement Trace Parameters.....................................................................12

Figure 3-5.(b) Analysis Trace Parameters.............................................................................12

Figure 3-6. Events List..........................................................................................................13

Figure 3-7. Information of Marker A/B.................................................................................13

Figure 3-8. Information of Fiber...........................................................................................14

Figure 3-9. (a) Parameter Configuration...............................................................................15

Figure 3-9. (b) Parameter Configuration...............................................................................16

Figure 3-10. Set Range..........................................................................................................17

Figure 3-11. Pulse Width Configuration ...............................................................................17

Figure 3-12. Average Time Configuration ............................................................................18

Figure 3-13. Wavelength Configuration................................................................................19

Figure 3-14. Measurement Mode Configuration...................................................................19

Figure 3-15. VFL Configuration ...........................................................................................20

Figure 3-16. Length Units Configuration..............................................................................20

Figure 3-17. IOR Configuration............................................................................................21

Figure 3-18. Scatter Coefficient Configuration.....................................................................21

Figure 3-19. Non Reflection Threshold Configuration.........................................................22

Figure 3-20. Reflection Threshold Configuration.................................................................22

Figure 3-21. End Threshold Configuration...........................................................................23

Figure 3-22. Delete File ........................................................................................................24

Figure 3-23. Time Configuration ..........................................................................................24

Figure 3-24. Auto Off Configuration ....................................................................................25

Figure 3-25. Language Configuration...................................................................................25

Figure 3-26. Contrast Adjustment of LCD Display...............................................................26

Figure 3-27. Color Mode Setting..........................................................................................26

Figure 3-28. Load Default.....................................................................................................27

Figure 3-29. (a) Help.............................................................................................................27

Figure 3-29. (b) Help.............................................................................................................27

Figure 3-29. (c) Help.............................................................................................................28

Figure 4-1. Power on Interface..............................................................................................30

Figure 4-2. Quick Reference.................................................................................................30

Figure 4-3.(a) Measuring.......................................................................................................32

Figure 4-3.(b) Measuring......................................................................................................32

Figure 4-4. Trace Measurement of OTDR ............................................................................33

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Figure 4-5. Save Trace ..........................................................................................................36

Figure 4-6. Browse Saved Traces..........................................................................................37

Figure 4-7. Upload Saved Traces..........................................................................................37

Figure 4-8. Realtime Testing.................................................................................................38

Figure 5-1. Replacing Battery ...............................................................................................39

Figure 5-2. Structure of Flange.............................................................................................41

Figure 6-1. Model Illumination 1..........................................................................................43

Figure 6-2. Model Illumination 2..........................................................................................45

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1.General Information

1.1 Scope of this Manual

Thank you for purchasing XtendLan instruments. Please read this manual carefully before using any of XtendLan series fiber-optic instruments. Always observe the warnings and cautions appearing throughout this manual.

This manual contains the information necessary for proper operation and maintenance of XtendLan OTDR, troubleshooting instructions as well as information regarding obtaining services.

All XtendLan OTDR are carefully assembled and undergo a rigorous mechanical, electrical, and optical inspection prior to shipment. Beside the instrument, the package should also include a data transfer cable, a power adapter, a PC Analysis software installation disk and this users’ manual etc. For detailed information, refer to the packing list

Upon receiving the instrument, please check for any obvious signs of physical damage that may have occurred during shipment. Report any damage to the shipping agent or the representative of XtendLan Inc. immediately. Retain the original packing materials in case reshipment becomes necessary.

1.2 Unpacking and Inspection

This instrument has been carefully packed in accordance with standard shipping procedures. Examine the instrument for damage that may have occurred during shipment. If you find any damage or the instrument is not working, or if any of the following items are not included, please contact your representative of XtendLan, Inc.

If necessary, you may contact XtendLan, Inc via this email: sales@xtendlan.com.

1.3 Introduction

XtendLan OTDR are the preferred choice for the measurement of optical fiber’s specifications. With OTDR, you can make assessment of one single optical fiber or a whole optical fiber chain. Especially, you can directly observe loss and events distribution of optical fiber chain.

XtendLan OTDR check the transmission quality of optic fiber through measurement of backward scattered lights. Standard organizations like International Telecom Union (ITU) define backward scattered lights as effective analysis means of measurement of optical fiber loss. Backward scattering is also the only effective way of connector inspection, which can

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be applied to measure the length of optical fiber, too. Therefore, OTDR is a useful tool for optical fiber manufacturing, installation and maintenance.

OTDR works through reviewing “events” in optical fiber (for example, irregularities and connectors), which is quite helpful for quality control for those who are in charge of optical fiber manufacturing, installation and maintenance. OTDR can help identify the irregularities in optical fiber, locate them, and measure their attenuation, relevant loss and their homogeneity.

OTDR is more helpful for field operation. It can help to check the qualification of optical fiber chain circuit on a regular basis. For the purpose of future maintenance, transmission quality and condition of optical fiber need to be recorded and stored, which includes measurement of optical path, total loss, and loss of all tie-ins and connectors.

Besides, OTDR are easy to use, small and compact. According to the ergonomics, they are designed to fully embody the user's convenience with its large LCD display and graphical interface. They can save and transfer the measurement curves data to a PC by the provided software for further analyzing, reporting and printing.

OTDR features by:

 Basic applications:

a) Measure the length of optical fiber and cable b) Measure the distance between two points on optical fiber and cable c) Locate faults and ruptures of optical fiber and cable d) Display distribution curve of optical fiber and cable loss e) Measure attenuation coefficient of optical fiber and cable f) Measure loss between two points on optical fiber and cable g) Measure loss of tie-ins h) Measure reflection of reflection events of optical fiber and cable

For a specific event ( transmission quality changed due to faults caused by welding, connector, bending etc.）, the following measurements can be carried out with OTDR:

a) For each event: distance, loss and reflection b) For each section of optical fiber: length and loss of dB or dB/Km c) For the whole optical fiber chain: length and loss of dB

 Large Colorful LCD display with auto or manual adjustment of contrast  Backlight LCD display supports night operation  Easy operation with trace graphic display  Trace storage function  RS232/USB Data upload port  PC analysis software for analyzing and reporting previously stored data  Auto off function conserving battery life

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 DC/AC power supply  Auto recharging, over 8 hours operation for one charge.

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2. Basic Operation

2.1 Foreword

This part introduces the basic operation on the OTDR. Specific operations of each type instrument are elaborated in Chapter 3 of this manual. Please read this manual carefully for optimal operation. Should you encounter any problems during operation, you are welcome to contact the technical staff of our company or representatives.

2.2 Instrument Interfaces Instructions

USB

RS- 232

13. 8V/ 1. 2A

POWERCHARGE

AC Power Jack

RS232 Port

Indicator of Power

Warning

USB Port

Indicator of Charge

Optic Connector

Figure 2-1. Coping of OTDR-S13A/S15A /S20A/M20A

 Fiber Optic Output

A FC/PC connector is used for optic interface.

 AC Power Jack

Power adapter jack requirements: 13.8V DC@1.2A

 Data Transfer Port

For all types, there are USB interface and RS232 interface. This interface is used to transfer saved traces in the instrument to a PC for further analysis by associated trace manager.

 Power/Charge Indicator

When measurement power on or charging, therelevant indicator will be lightened.

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USB

RS- 232

POWERCHARGE

OTDR VLS

Indicator of Charge

Indicator of Power

AC Power Jack

USB Port

RS232 Port

Warning

Figure 2-2. Coping of OTDR-S20C

 OTDR/VLS

Fiber optic output for OTDR and VLS, a FC/PC (interchangeable SC, ST)

connector is used for optic interface.

 AC Power Jack

Power adapter jack requirements: 13.8V DC@1.2A.

 Data Transfer Port

For all types, there are USB interface and RS232 interface. This interface is used to transfer saved traces in the instrument to a PC for further analysis by associated trace manager.

 Power/Charge Indicator

When measurement power on or charging, therelevant indicator will be lightened.

告Invisible laser radiation

Please always avoid looking directly at the optical output or stare at laser beam.

2.3 Use of Batteries

Battery for XtendLan OTDR is NiMH battery.

 Cautions during Operation:

The following may bring auto power off of the instrument:

— The instrument will be auto power off when there is insufficient power during

operation and low power will be shown on the LCD.

— If unused for a long time and cause insufficient power, the instrument will be

power off several seconds after powering on so as to protect the batteries in case of excessive discharging. The inside batteries should be recharged immediately through adapter.

 Cautions in Recharge:

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— Quick charge is needed first and then switch to trickle charge after the voltage

reaches a predefined Figure. Quick charge temperature is +5~+45℃, and trickle charge temperature is 0~+55℃, suitable for indoors. Battery will not be full or

be damaged if the charging temperature is beyond the above range, which may shorten batter life.

— 3 hours for quick charge; — Do not charge for over 8 hours

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2.4 Keypad Functions

ShinewayTech

pal mOTDR-15

ˇ ůˇ ůˇ ůˇ ůˇ ůˇ ůˇ ůˇ ůˇ ůˇ ůˇ ůˇ ůˇ ůˇ ůˇ ůˇ ůˇ ůˇ ůˇ ůˇů ˇů ˇů

ˇů ˇů ˇů ˇů ˇů ˇů ˇů ˇů ˇů ˇů ˇů ˇ ůˇ ůˇ ůˇ ůˇ ůˇ ůˇ ůˇ ůˇ ůˇ ůˇ ůˇ ůˇ ůˇ ůˇ ůˇ ůˇ ůˇ ůˇ ůˇů

ˇů ˇů ˇů ˇů ˇů ˇů ˇů ˇů ˇů ˇů ˇů ˇů ˇů

>>>>>>>>>>>>>>>>>>>>>

ShinewayTech

pal mOTDR-XXXX

--- Ver si on X. X ---

ShinewayTech

On/Off

pa lm OTDR

EnterShift

Run/Stop

Figure 2-3. Operation Interface of OTDR

[On/Off]

Power on or off

[ ]

Under GUI, Press to start measurement. While testing, press this key to stop measurement

[Enter]

 Under GUI, press this key to confirm

the current operation

 Together with [Shift/ ], can browse

the event list downwards

[ ] [ ]

Main functions:

 Move menu bar in menu operation  Highlight the icon to be operated  Adjust parameter in parameter configuration

 Together with [Shift/ ], can zoom out or

zoom in trace vertically

[ ][ ]

Main functions:  Select parameter to be adjusted in parameter configuration  Move marker leftwards or rightwards in Trace operation

 Turn page while in Help sub-menu  Together with [Shift/ ], can zoom out or

zoom in trace horizontally

[ ]

Main functions：

 Read help when power on  Cancel the current operation  Exit menu configuration  Switch between information Windows

 Together with [Shift/ ], can review

the event list upwards

[Shift/ ]

This is the hot key to active the integration function by being pressed together with other keys. Besides, by pressing this key singly under the GUI of displaying trace, the trace can be resumed to the original size without any zoom

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3.Basic Information of OTDR

3.1 Principle of OTDR

OTDR (Optical Time Domain Reflectometer) is a measurement instrument for identifying optic fiber transmission features. The instrument is mainly used to measure attenuation of a whole optic fiber chain and provide attenuation details relating to length, namely detect, locate and measure any event in optic fiber chain (events refer to faults caused by welding, connectors, and bending whose transmission change can be measured). Its non-destructive, one-end connection, and rapid measurement has made the OTDR an indispensable tool for manufacture, construction, and maintenance of optic fiber.

The faults and heterogeneity of optic fiber itself cause Rayleigh scattering of light pulse transmitted in optic fiber. Part of light pulse is scattered in the reverse direction, and this is called Rayleigh backward scattering, which actually provides attenuation details relating to length.

Information relating to distance is obtained through time information (that’s the reason why there is “time Domain” in the name of OTDR). Fresnel reflection occurs at the boundary between two media of different IOR (for example, connections of faults, connectors, or optic fiber end). This reflection is used to locate the discontinuous points on optic fiber. The magnitude of reflection depends on the difference between IOR and the smoothness of boundary.

OTDR sends out a light pulse into connected optic fiber, and receive reflections of events and backward scattering power of pulse in time. Locus will be displayed on LCD. The y-axis is dB value of backward scattering power, and the x-axis is the distance.

3.2 Basic Definition and Classification of Events

3.2.1 Events

Events refer to any abnormal points causing attenuation or sudden change of scattering power besides the normal scattering of optic fiber, which include all kinds of losses like bending, connections and ruptures.

Events points displayed on LCD are abnormal points that cause traces to deviate from straight line. Events can be classified as reflection events and non-reflection events.

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3.2.1.1 Reflection Events

When some pulse energy is scattered, reflection events happen. When reflection event occurs, peak shows on trace, as shown in Figure 3-1.

Figure 3-1. Reflection Event

3.2.1.2 Non-reflection Events

Non-reflection events happen at certain points where there is some optic loss but no light scattering. When non-reflection event occurs, a power decline shows on trace, as in Figure 3-2.

Figure 3-2. Non-reflection Event

3.2.1.3 Inspection Events

OTDR sends off a light pulse into the optic fiber to be inspected, and then receive returning light signals, and starts calculating the “event” distance. The farther the distance is, the longer time need for scattered light to be received by the instrument. Event distance can be calculated according to the time of receiving events signals.

Through inspection of scattered signals, properties of optic fiber, connectors, tie-ins can be identified.

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3.3 MeasurementApplication of OTDR

OTDR displays power relating to distance of returning signals. This information can be used to identify the main properties of an optic fiber chain.

3.3.1 Measurement Contents of OTDR

 Event location(distance),end or rupture of optic fiber chain  Attenuation coefficient of fiber  Loss of a single event (for example, one optic tie-in), or total loss from upper end to end  Range of a single event like reflection of connectors (or grade of reflection)  Auto measurement of cumulative loss of a single event

3.3.2 Trace Analysis of OTDR

The trace analysis of OTDR is fully automatic. The trace locates:

 Reflection events of connections and mechanic tie-ins  Non-reflection events (usually at welding tie-ins)  End of optic fiber

Through scanning the first loss event that is larger than end threshold, end of optic fiber can be identified.

 Events list：event type, loss, reflection and distance.

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3.4 Trace Display Screen of OTDR

Trace displays on OTDR screen, as in Figure 3-3.

8Km/Di v 5. 00dB/Di v t r ace1

No. : 2/ 4

At t n. : 0. 220

Locat i on : 25. 308km

Ref l . : -38. 12dB

I ns. l : 0. 85dB Cum. l : 5. 57dB

Bar

Trace

Display

Window

Information

Window

Event

Figure 3-3. Trace Display Screen

3.4.1 Trace Display of OTDR

This window displays the trace after one measurement. Definition of Trace：After one measurement, reflection power diagram will be displayed as

distance function. This diagram is referred to as trace. Trace of OTDR displays measurement result in a graphic form. The y-axis stands for power,

and the x-axis stands for distance, as shown in Figure 3-4.

Reflection

Attenuation

Distance

Figure 3-4. Traces and Coordinates

3.4.2 Information Window of OTDR

Contents of this window: measurement parameters, events list, marker A/B and analysis parameters.

3.4.2.1 Measurement Trace Parameters

Important measurement and analysis parameters always display in the information window. as shown in Figure 3-5.(a), (b):

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30s

80km

1.4666

2.5us 1550nm

Avg.Time: Range:

IOR :

Pul seWidth: Wavelengt h:

8Km /Div

5.00dB/Di v tra ce1

Para-1

Samp.Di st.: 5.11 m

Figure 3-5.(a) Measurement Trace Parameters

D a t e :

27- May-2005 09 :15

NRe fl .T hre.:

-52.00

Refl .Thre.:

3.00

End Thre .:

-51 .50

0.20 Scat.Coe f.:

8Km /Div 5.00 dB/Div trace1 Para-2

Figure 3-5.(b) Analysis Trace Parameters

For definitions and configurations of items in Figure 3-5.(a) (Avg. time, sample distance, Range, IOR, wave length and pulse width) showed in the interface, please refer to parameter configuration.

For definitions of items in Figure 3-5.(b) (date, reflection threshold, non-reflection threshold, end threshold, scattering coefficient), please refer to parameter configuration.

3.4.2.2 Events List

To indicate the location of events inspected. Any defined posts will be displayed in event list, for example, non-reflection event like welding points and reflection event like connectors, as shown in Figure 3-6.

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No.: 2/4

Attn.: 0. 220

Location: 25.308km

Refl .: -38.12dB Ins .L.: 0.85dB

Cum .L.: 5. 57dB

8Km /Div 5.00dB /Div trace1 Event

Figure 3-6. Events List

No： Event sequence No; Four types of events:

Begin end; Reflection event； Fiber end; Attenuation event; Loc.：Distance from beginning point to event; Refl.：Magnitude of reflection; Insl.：Loss of Inserted event; Attn.：Attenuation characteristic from one event point to the current event. Cuml.：Cumulative loss, calculating from beginning point to the current event.

3.4.2.3 Information of Marker A/B

Marker is used to mark and analyze a single event, trace section and distance. Distance, attenuation, loss at marker or between markers will be displayed in information of markers, as shown in Figure 3-7.

A-B : 9.274km

1.710 dB

0.180dB/ km

2Pt.Loss :

2Pt.Atte n:

8Km/Div 5.00dB/ Div tra c e1 Marker

Figure 3-7. Information of Marker A/B

The following parameters are measured between marker A and B. When you change either

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marker, record will change accordingly.

 “A-B”：Distance between two markers  “2 points loss”: Loss between two markers; power difference between two

markers

 “2 points attenuation”: 2 points loss of unit length

The specific operations of the above are to be elaborated afterwards.

3.4.2.4 Information of Fiber

Information of fiber includes total attenuation, length and loss of the tested fiber. As shown in figure 3-8.

File: t ra c e1

14. 920dB

0.240dB/km

Total Attn.:

Lengt h:

8Km/Div 5.00dB/ Div tra c e1

Fiber

62.180km Loss:

Figure 3-8. Information of Fiber

3.4.3 Menu Bar and Window of OTDR

3.4.3.1 Menu Bar and Icons of OTDR

No.

Icons

Meanings

Parameter configuration

Save file

Open file

Re-analyze the trace

Zoom in trace horizontally

Zoom out trace horizontally

Zoom in trace vertically

Zoom out trace vertically

Switching between markers

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No.

Icons

Meanings

Review events list upwards

Review events list downwards

Battery power indicator

 Under Help Menu, only No.1 and 3 are operational  In the process of measurement, all function on menu bar will be disabled  No.3, 4, 5, 6, 7, 8 and 9 are tools for trace analysis; No.10 and 11 are tools for

reviewing events list

 No.1 is elaborated in Figure 3.4.3.2

3.4.3.2 Parameter Configuration on OTDR Menu Bar

Correct parameter configuration is a necessity for accurate measurement; therefore, necessary configuration must be performed before using the instrument. The following are examples of OTDR-S20C.

Use [ ] and [ ] to highlight , i.e. parameter configuration, then press [Enter], as shown in Figure 3-9; Press [ ] to exit.

Ave.T i m e: Range:

IOR :

8Km /Div

3.50dB/Di v tra ce1.trc 15:20

1.4666 1550nmWavelengt h:

30s

80km 2500ns

R a n g e

W a v e l e n g t h 1550nm

P u l se W i d t h

Aut o

A v g . T i m e 30s

I O R

1.4666

N r e f l .T h r e . 0.20dB R e f l. T h r e.

-52 .00dB

E n d T h r e. 3.00 dB

S c a t . C o e f . -52 .1dB

A v e r a g i n g

M e a s . M o d e

Aut o

V F L O f f L e n g t h U n i t s M e t e r [m ]

Figure 3-9. (a) Parameter Configuration

1.4666 1550nm

Ave.T i m e: Range:

IOR : Wavelengt h:

8Km/Div

3.50dB/Div t rac e1.trc 15:20

30s

80 km

2500ns

Pul sewidt h:

L o a d D e f a u l t

H e l p

L a n g . / Ó ďŃÔ L C D C o n t r a s t

A u t o O f f

O f f E n g l i s h

N R e f l . T h r e . 0. 20dB R e f l . T h r e.

-52 .00 dB

E n d T h r e. 3.00dB

S c a t . C o e f . -52.1dB

D e l e t e F i l e T i m e ( y- m - d)

2005-05-27 10 :30 :20

C o l o r M o d e C o l o r 2

User’s Manual for OTDR

- 16 -

Figure 3-9. (b) Parameter Configuration

3.4.3.2.1 Definitions of Measurement Parameters

Parameter

Definition of Parameter

Range

Length of optic fiber relevant to the trace

Pulse Width

Width of laser pulse sending out from OTDR to optic fiber

Average Time

To select suitable testing time.

Wave length

To select laser wave length for measurement

Measurement Mode

To select mode for measurement

VFL

Power on or off visible laser(For OTDR-S20C only)

Length Units

To select length units

IOR

IOR of optic fiber which affects the transmission speed of laser

Scatter Coefficient

Which affects backward scatter power of laser in fiber

Non reflection threshold

Events whose insertion loss is greater than the thresholddisplays here

Reflection threshold

Reflection events GE the threshold will be displayed.

End threshold

The first event with insertion loss GE the threshold is considered the

end of fiber, and all following events will be ignored

Delete Files

Delete stored trace data in the instrument

Time

Show current system time

Auto Off

On or off of Auto off function

Lang./语言

Choose the language

LCD contrast

Adjust the contrast of LCD to select

Color mode setting

Select suitable displaying color setting

Load Default

Set all parameters to factory setting

Help

Show help files (Quick Reference)

3.4.3.2.2 Range Configuration

Generally, range will be set according to actual length of optic fiber, so as to insure the accuracy of measurement.

Under the menu of parameter configuration, use [ ] and [ ] to highlight “Range”; Press [Enter] to enter, as shown in Figure 3-10; press [ ] to exit.

3.00dB

30s

80km

1.4666

2500ns

1550nm

Ave.Ti m e: Range:

IOR :

Pul sewi dt h: Wavelengt h:

8Km /Div

3.50dB/Div t rac e1.trc 15:20

A u t o

1.3 km

2.5 km

5.0 km 10km 20km 40km 80km

120 km

30s

80km 2500ns

R a n g e

W a v e l e n g t h 1550nm

P u l s e W i d t h

Auto

A v g . T i m e 30s

I O R

1.4659

N r e f l . T h r e .

0.20dB

R e f l . T h r e.

-52 .00dB

E n d T h r e.

3.00dB

S c a t . C o e f .

-51 .50dB

A v e r a g i n g

M e a s . M o d e

Auto

A u t o

1.3km

2.5km 5km

10km

20km 40km

80km

240 km

300m

160 km

V F L L e n g t h U n i t s

User’s Manual for OTDR

- 17 -

Figure 3-10. Set Range

Use [ ] and [ ] to select adequate range; Press [Enter] to confirm.

 “Auto” means the automatic measurement. When this function is selected, the

instrument will automatically make an intelligentized selection of adequate range and pulse width for measurement. The whole process of measurement does not need any intervetion of the operator

 “Auto” means the default setting

3.4.3.2.3 PulseWidth Configuration

The selection of pulse width affects the dynamic range and resolution of measurement trace. With narrow pulse width, there will be higher resolution and smaller dead zone, however, the dynamic range will be decreased. On the contrary, wide pulse width can bring higher dynamic range and measure comparatively long distance, but resolution and dead zone will be affected. Therefore, users should make choice between dynamic range and dead zone.

There will be different pulse width options for reference according to different range of distance being chosen.

Under menu of parameter configuration, use [ ] and [ ] to highlight “PulseWidth”; Press [Enter] to select as shown in Figure 3-11. Press [ ] to exit.

30s

80km

1.4666

2500ns

1550nm

Ave.Ti m e: Range:

IOR :

Pul sewidt h: Wavelengt h:

8Km/Div

3.50dB/Di v tra c e1.trc 15:20

3 0 n s

100 ns 275 ns

1.0us

2.5us

30s

80km 2500ns

R a n g e

W a v e l e n g t h 1550nm

P u l se W i d t h

Aut o

A v g . T i m e 30s

I O R 1.4666 N r e f l .T h r e .

0.20dB

R e f l. T h r e.

-52 .00dB

E n d T h r e.

3.00dB

S c a t . C o e f .

-52 .1dB

A v e r a g i n g

M e a s . M o d e

Aut o

3 0 n s

100ns 300ns

1.0us

2.5us

V F L L e n g t h U n i t s M e t e r [ m ]

Figure 3-11. Pulse Width Configuration

Use [ ] and [ ] to highlight pulse width; Press [Enter] to confirm.

User’s Manual for OTDR

- 18 -

 “Auto” means the default setting  When Range is set to “Auto”, pulse width will automatically become “Auto”

3.4.3.2.4 Average Time Configuration

Average time will affect the SNR directly. The longer the average time is, the higher SNR is, as well as dynamic range. Therefore, in case of measurement of long-distance optic fiber, long average time should be selected in order to review events at long-distance end.

Under parameter configuration, use [ ] and [ ] to highlight “Average time”; press [Enter]to confirm, as shown in Figure 3-12. Press [ ] to exit.

30s

80km

1.4666

2500ns

1550nm

Ave.Ti m e: Range:

IOR :

Pul sewi dt h: Wavelengt h:

8K m /Div

3.50dB/Div t race1.trc 15:20

30s

80km 2500 ns

R a n g e

W a v e l e n g t h 1550 nm

P u l se W i d t h

Aut o

A v g. T i m e 30s

I O R

1.4659

N r e f l. T h r e.

0.20dB

R e f l. T h r e.

-52.00dB

E n d T h r e.

3.00dB

S c a t . C o e f .

-52.1dB

A v e r a g i n g

M e a s . M o d e

Aut o

1 5 s

30s 1m i n 2m i n 3m i n

V F L L e n g t h U n i t s

1.4666

Figure 3-12. Average Time Configuration

Use [ ] and [ ] to highlight the desired time; and press [Enter] to confirm.

 There are 5 levels of predefined average time: 15s, 30s, 1min, 2min and 3min  The default setting is 30s

3.4.3.2.5 Wavelength Configuration

Under parameter configuration, use [ ] and [ ] to highlight”wavelength”; press [Enter] to change wavelength, as shown in Figure 3-13.

User’s Manual for OTDR

- 19 -

1.4666

1550nm

Ave.Ti m e: Range:

IOR : Wavelengt h:

8Km/Div 3.50dB/Div t ra c e1.trc 15:20

30s

80 km 2500 ns

R a n g e

W a v e l e n g t h 1550nm

P u l s e W i d t h Auto A v g . T i m e 30s

I O R

1.4666

N r e f l . T h r e . 0.20dB R e f l . T h r e. -52.00dB E n d T h r e. 3.00 dB

S c a t . C o e f . -52 .1dB

A v e r a g i n g

M e a s . M o d e

Aut o

1 5 5 0 n m

1310nm

V F L

O f f

L e n g t h U n i t s M e t e r [ m ]

Figure 3-13. Wavelength Configuration

3.4.3.2.6 Measurement Mode Configuration

There are two kinds of measurement mode: Averaging and Real time mode. Under Real time Mode, OTDR will undertake realtime measurement for the connector of exterior fiber and

refurbish the measure trace. While under Real time Mode, press key “ ” to stop, otherwise it will measure all along. Under Averaging Mode, OTDR will average the data within the measure time which is set by user. While exceeding the set time, it will stop automatically and display the result. Generally, we suggest Averaging Mode. Under menu of parameter configuration, use [ ] and [ ] to highlight “Measurement Mode”; Press [Enter] to choose Averaging mode or Realtime mode, as shown in Figure

3-14. Press [ ] to exit.

30s

80km

1.4666

2500ns

1550nm

Ave.T i m e: Range:

IOR :

Pul sewidt h: Wavelengt h:

8Km /Div

3.50dB/Di v tra ce1.trc 15:20

30s

80km

2500ns

R a n g e

W a v e l e n g t h 1550nm

P u l se W i d t h

Aut o

A v g . T i m e

30s

I O R 1.4666 N r e f l . T h r e .

0.20dB

R e f l . T h r e .

-52 .00dB

E n d T h r e.

3.00dB

S c a t . C o e f .

-52 .1dB

A v e r a g i n gM e a s . M o d e

Aut o

V F L

O f f

L e n g t h U n i t s M e t e r [m ]

Figure 3-14. Measurement Mode Configuration

3.4.3.2.7 VFL Configuration(ForOTDR-S20C only)

Under parameter configuration, use [ ] and [ ] to highlight “VFL”; according to different demand, press [Enter] to select CW, 1Hz or off, Press [ ] to exit When VFL is

on, icon will be displayed under

icon, which is in the right menu bar. as in

Figure 3-15.

User’s Manual for OTDR

- 20 -

1.4666 1550nm

Ave.Ti m e: Range:

IOR : Wavelength:

8Km /Div

3.50dB/Di v tra c e1.t rc 15:20

1.46594

30 s

80km 2500 ns

R a n g e

W a v e l e n g t h 1550 nm

P u l s e W i d t h

Aut o

A v g. T i m e 30 s

V F L

N r e f l. T h r e. 0.20dB R e f l . T h r e.

-52.00dB

E n d T h r e.

3.00dB

S c a t . C o e f .

-52.1 dB

A v e r a g i n gM e a s . M o d e

Aut o

I O R

1.4666

L e n g t h U n i t s M e t e r [ m ]

Figure 3-15. VFL Configuration

3.4.3.2.8 Length Units Configuration

Under the parameter configuration menu use [ ] and [ ] to highlight “Length Units”; press [Enter] to select the desired units of measurement, as in Figure 3-16. Press [ ] to

exit

Ave.T i m e: Range:

IOR :

8Km /Div

3.50dB/Di v tra ce1.trc 15:20

1.4666 1550nmWavelengt h:

30s

80km 2500ns

R a n g e

W a v e l e n g t h 1550nm

P u l se W i d t h

Aut o

A v g . T i m e 30s

I O R

1.4666

N r e f l .T h r e . 0.20dB R e f l. T h r e.

-52 .00dB

E n d T h r e. 3.00 dB

S c a t . C o e f . -52 .1dB

A v e r a g i n g

M e a s . M o d e

Aut o

V F L O f f

L e n g t h U n i t s M e t e r [m ]

Feet[ft]

Miles[mi]

Meter[m]

Figure 3-16. Length Units Configuration

3.4.3.2.9 IOR Configuration

IOR is a key factor to affect the speed of laser transmission in optic fiber; and in this case, IOR configuration has direct impact on the accuracy of measurement. Generally speaking, the IOR parameter is provided by optic fiber manufacturer, and it can be set to the accuracy of four digits after decimal point between 1.0-2.0.

Under parameter configuration, use [ ] and [ ] to highlight “IOR”; and press [Enter] to enter, as in Figure 3-17. Press [ ] to exit.

User’s Manual for OTDR

- 21 -

1.4666 1550nm

Ave.Ti m e: Range:

IOR : Wavelength:

8Km/Di v

3.50dB/Di v tra c e1.t rc 15:20

1.46594

30s

80km 2500ns

R a n g e

W a v e l e n g t h 1550nm

P u l se W i d t h

Aut o

A v g . T i m e 30 s

I O R

N r e f l . T h r e .

0.20dB

R e f l. T h r e.

-52 .00 dB

E n d T h r e.

3.00dB

S c a t . C o e f .

-52 .1dB

A v e r a g i n gM e a s . M o d e

Aut o

1. 6664

V F L Of f L e n g t h U n i t s M e t e r [ m ]

Figure 3-17. IOR Configuration

Use [ ] and [ ] to adjust the position of highlights; use [ ] and [ ] to change the digits. After setting, press [Enter] to confirm.

3.4.3.2.10 Scatter Coefficient Configuration

Scatter coefficient determines the value of backward scatter power. The configuration affects the calculation of reflection value.

Under parameter configuration, use [ ] and [ ] to highlight “Scatter coefficient”; press [Enter] to enter, as shown in Figure 3-18. Press [ ] to exit.

30s

80km

1.4666

2500ns

1550nm

Ave.T i m e: Range:

IOR :

Pul sewidt h: Wavelengt h:

8Km/Div

3.50dB/Di v tra ce1.trc 15:20

-51 .50dB5

30s

80km 2500ns

R a n g e

W a v e l e n g t h 1550nm

P u l se W i d t h

Aut o

A v g . T i m e 30s

I O R 1.4666

N r e f l .T h r e . 0.20dB R e f l. T h r e. -52.00dB E n d T h r e. 3.00 dB

S c a t . C o e f .

A v e r a g i n g

M e a s . M o d e

Aut o

-52.1 dB5

V F L

O f f

L e n g t h U n i t s M e t e r [ m ]

Figure 3-18. Scatter Coefficient Configuration

Use [ ] and [ ] to adjust the position of highlights; use [ ] and [ ] to change the digits. After setting, press [Enter] to confirm.

3.4.3.2.11 Non Reflection Threshold Configuration

This configuration has direct impact on the listing of insertion loss events. Only events GE this threshold will be listed.

Under parameter configuration, use [ ] and [ ] to highlight “Non reflection threshold”; press [Enter] to enter, as shown in Figure 3-19. Press [ ] to exit.

User’s Manual for OTDR

- 22 -

1.4666 1550nm

Ave.T i m e: Range:

IOR : Wavelengt h:

8Km /Div

3.50dB/Di v tra ce1.trc 15:20

0.20dB0

30s

80km

2500ns

R a n g e

W a v e l e n g t h

1550nm

P u l se W i d t h

Aut o

A v g. T i m e

30s

I O R 1.4666

N r e f l. T h r e.

R e f l. T h r e.

-52.00dB

E n d T h r e. 3.00dB

S c a t . C o e f .

-52.1 dB

A v e r a g i n gM e a s . M o d e

Aut o

0.20dB0

V F L

O f f

L e n g t h U n i t s M e t e r [m ]

Figure 3-19. Non Reflection Threshold Configuration

Use [ ] and [ ] to adjust the position of highlights; use [ ] and [ ] to change the digits. After setting, press [Enter] to confirm.

The default setting is 0.2dB

3.4.3.2.12 ReflectionThreshold Configuration

This configuration has direct impact on reflection events listing. Only reflection events GE this threshold will be displayed in events list.

Under parameter configuration, use [ ] and [ ] to highlight “reflection threshold”; press [Enter] to enter, as shown in Figure 3-20. Press [ ] to exit.

30s

80km

1.4666

2500ns

1550nm

Ave.T i m e: Range:

IOR :

Pul sewidt h: Wavelengt h:

8Km /Div

3.50dB/Di v tra ce1.trc 15:20

-52 .00dB5

30s

80km

2500ns

R a n g e

W a v e l e n g t h 1550 nm

P u l se W i d t h

Aut o

A v g. T i m e

30s

I O R

1.4666

N r e f l. T h r e.

0.20dB

R e f l. T h r e.

E n d T h r e. 3.00 dB

S c a t . C o e f .

-52 .1dB

A v e r a g i n gM e a s . M o d e

Aut o

-52 .00 dB5

V F L O f f L e n g t h U n i t s M e t e r [ m ]

Figure 3-20. Reflection Threshold Configuration

Use [ ] and [ ] to adjust the position of highlights; use [ ] and [ ] to change the digits. After setting, press [Enter] to confirm.

User’s Manual for OTDR

- 23 -

The default setting is -52.00dB

3.4.3.2.13 EndThreshold Configuration

This threshold is the end threshold of optic fiber. If the end threshold equals 3.0dB, then the first event with insertion loss GE 3dB will be considered as the end of the optic fiber. If the value is set to 0dB, there will be no end threshold.

Under parameter configuration, use [ ] and [ ] to highlight”End threshold”; press [Enter] to enter, as shown in Figure 3-21. Press [ ] to exit.

30s

80km

1.4666

2500ns

1550nm

Ave.T i m e: Range:

IOR :

Pul sewidt h: Wavelengt h:

8Km/Div

3.50dB/Di v tra ce1.trc 15:20

3.00dB0

30s

80km 2500ns

R a n g e

W a v e l e n g t h

1550nm

P u l se W i d t h

Aut o

A v g . T i m e

30s

I O R

1.4666

N r e f l .T h r e .

0.20dB

R e f l. T h r e.

-52 .00dB

E n d T h r e.

S c a t . C o e f .

-52 .1dB

A v e r a g i n gM e a s . M o d e

Aut o

3 .00 dB0

V F L

O f f

L e n g t h U n i t s M e t e r [ m ]

Figure 3-21. End Threshold Configuration

Use [ ] and [ ] to adjust the position of highlights; use [ ] and [ ] to change the digits. After setting, press [Enter] to confirm.

The default setting is 3.00dB

3.4.3.2.14 Delete File

This function is designed to delete saved traces. Under parameter configuration, use [ ] and [ ] to highlight “Delete file” ; press [Enter]

to enter, as shown in Figure 3-22. Press [ ] to exit.

User’s Manual for OTDR

- 24 -

30s

80km

1.4666

2.5us 1550nm

Avg .Time:

Range:

IOR :

Pul seWidth: Wavelengt h:

8Km /Div

3.50dB/Di v tra c e1.trc

15:20

S e l e c t f i l e : 1 1 8 / 3 0 0

Trace001

Trace002 Trace003 Trace004 Trace005

C a n c e lO p e n

Trace006 Trace007

Trace008

27-Ma y-2005 10 :30 Range: 80 km Pwidt h: 2.5us

Wavelen.:

1550nm

Figure 3-22. Delete File

Press [ ] and [ ] to choose the files to be deleted, then press [Enter] to confirm. Users can delete one or several files by one time. Press [ ] and [ ] to choose [Delete]. Press

[Enter], according to the instruction, choose “Yes” to delete; choose “No” to not delete. If choose [Cancel], it will exit the file delete menu.

3.4.3.2.15 Time Configuration

Time configuration is used to change system time. Under parameter configuration, use [ ] and [ ] to highlight”Time”; press [Enter] to

change, as shown in Figure 3-23. Press [ ] to exit.

30s

80km

1.4666

2500ns

1550nm

Ave.T i m e: Range:

IOR :

Pul sewidt h: Wavelengt h:

8Km /Div

3.50dB/Di v tra ce1.trc 15:20

20 -12-10 10:30:2003

30s

80km 2500ns

W a v e l e n g t h 1550nm

A v g . T i m e 30 s

I O R 1. 4666

N r e f l . T h r e . 0.20dB R e f l . T h r e .

-52 .00 dB

E n d T h r e.

3.00dB

S c a t . C o e f .

-52 .1dB

A v e r a g i n gM e a s . M o d e

D e l e t e F i l e

T i m e ( y - m - d )

20 -05-27 10: 30:2005

V F L O f f L e n g t h U n i t s M e t e r [ m ]

Figure 3-23. Time Configuration

Use [ ] and [ ] to adjust the position of highlights; use [ ] and [ ] to change the digits. After setting, press [Enter] to confirm.

3.4.3.2.16 Auto off Configuration

This function is designed for conserving battery power. If auto off is on, the instrument will

User’s Manual for OTDR

- 25 -

auto power off within 5 minutes of idleness. Under parameter configuration, use [ ] and [ ] to highlight”Auto off”; press [Enter] to

switch, as shown in Figure 3-24. Press [ ] to exit.

1.4666 1550nm

Ave.T i m e: Range:

IOR : Wavelengt h:

8Km /Div

3.50dB/Di v tra ce1.trc 15:20

2500ns

W a v e l e n g t h

1550nm

I O R 1.4666

N r e f l. T h r e. 0.20dB R e f l. T h r e.

-52.00dB

E n d T h r e. 3.00 dB

S c a t . C o e f .

-52.1dB

A v e r a g i n gM e a s . M o d e

D e l e t e F i l e T i m e ( y - m - d )

2005-05-27 10 :30 :20

A u t o O f f

O f f

V F L O f f L e n g t h U n i t s M e t e r [ m ]

Figure 3-24. Auto Off Configuration

The default setting is “auto off” on

3.4.3.2.17 Language Configuration

There are two language options: English and Chinese. Under parameter configuration, use [ ] and [ ] to highlight “Lang./ ”; press [Enter] to switch, as shown in Figure 3-25. Press [ ] to exit.

1.4666 1550nm

Ave.T i m e: Range:

IOR : Wavelengt h:

8Km /Div

3.50dB/Di v tra ce1.trc 15:20

2500ns

I O R 1.4666 N r e f l. T h r e.

0.20dB

R e f l. T h r e.

-52.00dB

E n d T h r e.

3.00dB

S c a t . C o e f .

-52.1dB

A v e r a g i n gM e a s . M o d e

D e l e t e F i l e T i m e ( y - m - d )

2005-05-27 10 :30 :20

A u t o O f f

O f f

L a n g. / Ó ďŃÔ E n g l i s h

V F L O f f L e n g t h U n i t s M e t e r [ m ]

Figure 3-25. Language Configuration

3.4.3.2.18 ContrastAdjustment of LCD Display

The contrast of LCD has been adjusted. And users can adjust the contrast according to personal visual habits.

Under parameter configuration, use [ ] and [ ] to highlight “LCD Contrast”; press

User’s Manual for OTDR

- 26 -

[Enter] to adjust, as shown in Figure 3-26. Press [ ] to exit.

1.4666 1550nm

Ave.T i m e: Range:

IOR :

8Km /Div

3.50dB/Div t rac e1.trc 15:20

Wavelengt h:

2500ns

I O R

1.4666

N r e f l . T h r e . 0. 20dB R e f l . T h r e .

-52 .00 dB

E n d T h r e.

3.00dB

S c a t . C o e f . -52 .1dB

D e l e t e F i l e T i m e ( y - m - d ) 2005 -05-27 10 :30:20

A u t o O f f

O f f

L a n g . / Ó ďŃÔ

E n g l i s h

L C D C o n t r as t

Low H i gh

V F L O f f L e n g t h U n i t s M e t e r [ m ]

Figure 3-26. Contrast Adjustment of LCD Display

Use [ ] and [ ] to adjust contrast, and press [Enter] to confirm.

3.4.3.2.19 Color Mode Setting

Choose the different displaying color scheme according to the user’s fancy. Under parameter configuration, use [ ] and [ ] to highlight “Color mode”, press

[Enter] to choose different mode. Press [ ] to exit, as shown in Figure 3-27.

1.4666 1550nm

Ave.T i m e: Range:

IOR : Wavelengt h:

8Km /Div

3.50dB/Div t rac e1.trc 15:20

2500ns

I O R 1.4666

N r e f l. T h r e.

0.20dB R e f l . T h r e. -52.00dB E n d T h r e. 3.00dB

S c a t . C o e f .

-52.1 dB

D e l e t e F i l e T i m e (y - m - d )

2005-05-27 10 :30 :20 A u t o O f f Of f L a n g . / Ó ďŃÔ E n g l i s h

L C D C o n t r as t

C o l o r Mo d e

Color2

Color3

Color1

Black/White

L e n g t h U n i t s M e t e r [ m ]

Figure 3-27. Color Mode Setting

Use [ ] and [ ] to highlight suitable color mode setting; press [Enter] to confirm the

selection.

3.4.3.2.20 Default Set

This function is used to set OTDR parameters to factory settings. Those parameters include： range, pulse width, average time, IOR, non reflection threshold, reflection threshold, end

threshold, and scatter coefficient. Under parameter configuration, use [ ] and [ ] to highlight “Load default”; press [Enter] to enter, as shown in Figure 3-28. Press [ ] to

exit.

User’s Manual for OTDR

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1.4666 1550nm

Ave.T i m e: Range:

IOR : Wavelengt h:

8Km/Div

3.50dB/Div t rac e1.trc 15:20

2500ns

I O R 1.4666 N r e f l. T h r e.

0.20dB

R e f l . T h r e.

-52.00dB

E n d T h r e.

3.00dB

S c a t . C o e f .

-52.1 dB

D e l e t e F i l e T i m e (y - m - d ) 2005 -05-27 10 :30 :20

A u t o O f f

O f f

L a n g . / Ó ďŃÔ E n g l i s h

L C D C o n t r as t

L o a d D e f au l t

Yes

C o l o r M o d e

Figure 3-28. Load Default

Use [ ] and [ ] to highlight “yes” or “no”; press [Enter] to confirm.

3.4.3.2.21 Help

Users can get the quick reference via Help menu. Under parameter configuration, Use [ ] and [ ] to highlight “Help”; Press [Enter] to

enter, as shown in 3-29.(a)、(b)、(c). Press [ ] to exit.

1.4666 1550nm

Ave.T i m e: Range:

IOR : Wavelengt h:

8Km/Div

3.50dB/Di v tra ce1.trc 15:20

N r e f l .T h r e .

0.20dB

R e f l. T h r e.

-52.00dB

E n d T h r e. 3.00 dB

S c a t . C o e f .

-52.1dB

D e l e t e F i l e T i m e ( y - m - d)

2005 -05- 27 10 : 30:20 A u t o O f f Of f L a n g. / Ó ďŃÔ E n g l i s h

L C D C o n t r a s t

L o a d D e f a u l t

He l p

C o l o r M o d e C o l o r 2

Figure 3-29. (a) Help

Qui ck r ef er ence

( Page Up P a ge Down Qui t )

1. Connect t he f i ber and pal mOTDR .

2. Pr ess or t o sel ect i con , Pr ess ˇ® Enter ˇŻ t o act i vat e f unct i on .

3. Sel ect t o set par amet er s : I OR,

Scat . Coef . , pul sewi dt h , r ange , avg. Ti me , Ref l . Thre. , NonRef l . Thre

and End Thr e et c .

4. Pr ess ˇ® Run/St opˇŻ t o st ar t . . .

5. Pr ess t o vi ew measur e r esul t s .

Figure 3-29. (b) Help

User’s Manual for OTDR

- 28 -

Qui ck r ef erence

War ni ng:

Al ways Avoi d Naked Eyes Exposed t o Laser !

( Page Up P a ge Down Qui t )

7. Sel ect or t o zoom t r ace

t o zoom tr ace ver t i cal l y .

hor i zont al l y , and s el ect or

6. Pr ess or t o move act i ve marker

8. Sel ect t o swi t ch mar ker s .

9. Sel ect or t o browse event .

10. Sel ect t o save f i l es .

11. Sel ect t o open saved f i l es .

Figure 3-29. (c) Help

User’s Manual for OTDR

- 29 -

3.5 Battery Recharge Status

When the instrument is power off and powered through AC/DC adapter, the “CHARGE” indicator on the coping (Figure 1.) will turn on. When batteries are fully recharged, the indicator will turn off. When the instrument is power on and powered through AC/DC adapter, the inside batteries are automatically recharged. The meanings of signals are as follows:

The batteries are being recharged；

The batteries are fully recharged.

When the instrument is powered by inside rechargeable batteries, power volume of batteries is shown on the LCD:

No power;

Low power;

Half power;

More than half power;

Full power.

User’s Manual for OTDR

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4. Trace Measurement and Processing of Existing

Traces

4.1 Instructions on GUI

After power on, power on interface displays on the LCD, as shown in Figure 4-1:

ShinewayTech

pal mOTDR-XXXX

--- Ver si on X.X ---

>>>>>>>>>>>>>>>>>>>>>

Figure 4-1. Power on Interface

Logo of XtendLan, Inc. OTDR-XXXX： Model

---Version X.X---： Software Version.

Three seconds after power on, the interface will be automatically directed to quickreference:

1. Connect f i ber t o opt i cal por t

2. Pr ess ˇ® Run/St opˇŻ t o st ar t . . .

Avoi d Eyes E xpos ed t o L a s e r !

--s

--km

-. ---- ----nm

Ave. Ti me : Range : I OR : Wavel ength :

--Km/Di v --dB/ Di v Par a-1

3. or t o browse event t abl e t o vi ew t r ace par amet ers

---Pul seWi dt h :

Samp. Di st . : --

Figure 4-2. Quick Reference

User’s Manual for OTDR

- 31 -

4.2 Trace Measurement of OTDR

One complete trace can be obtained for each measurement. Also, OTDR can load a saved trace.

 Before each measurement, if the operator is not familiar with the cautions,

please do follow instructions in this manual for personal safety

 Make sure that the optical fiber or cable is not in use and there is no laser

beam in the fiber before testing via OTDR. Otherwise, it may result in imprecise test trace, even permanent damage for the OTDR

4.2.1 Trace Measurement- Connect Optical Fiber

Connect optic fiber to OTDR optic output directly, no tools needed.

 Clean connectors,for details please refer to chapterA  Clean tie-ins and check whether they are FC/PC tie-ins or not  Connect optic fiber to the instrument

4.2.2 Trace Measurement - Parameter Configuration

For details relating to parameter configuration, please refer to 3.4.3.2, Parameter Configuration on OTDR Menu Bar. If the parameters are unclear, please use the default parameters of the instrument, however, this may cause an increase of measurements errors.

Range is set to “Auto”, when auto measurement is on.

4.2.3 Trace Measurement- Auto

Auto measurement can be applied in case that the length of optic fiber is unidentifiable. OTDR auto select adequate range for measurement.

Steps for Auto measurement:

 Parameter configuration： for detailed operations,please refer to 3.4.3.2,Parameter

Configuration on OTDR Menu Bar. Set range to “AUTO”

 Measure: press [ ] to start measurement, and the interface is as in Figure 4-3.

(a), (b)

User’s Manual for OTDR

- 32 -

00: 30 00: 16

Ave. Ti me : Ti me Passed :

8Km/Di v

5. 00dB/Di v

Figure 4-3.(a) Measuring

©~

8Km/Di v 5. 00dB/Di v

00: 30 00: 30

Anal yzi ng ˇ

Ave. Ti me : Ti me Passed :

Figure 4-3.(b) Measuring

 Interface:

“Total: 00:30” ------------ Measure time which is set by user is 30 seconds “Passed: 00:16” ------------ Total measurement time has passed 16 seconds

“ “ ----------- Flickering of this sign means laser is active

 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 to users in real time. But at the end of measurement, the trace will be final, as shown in Figure 4-4.

User’s Manual for OTDR

- 33 -

No.: 2/4

Attn.: 0. 220

Location: 25.308km

Refl .: -38.12dB Ins .L.: 0.85dB

Cum .L.: 5. 57dB

8Km /Div 5.00dB /Div trace1 Event

Figure 4-4. Trace Measurement of OTDR

4.2.4 Trace Measurement - Manual

If the operators have full knowledge of measured optic fiber, they can set accurate parameters, and achieve optimal measurement results.

 Change “range”: Refer to 3.4.3.2.2 range configuration to select adequate range  Measure：Press [ ] to start measurement. The process is the same with Auto

measurement

4.2.5 Trace Measurement -Reasons of Measurement Failures

If measurement failures occur, reasons may be one of the following:

 Events may be too close to each other

Shorten the pulse width, and make another try. If failure still occurs, please try to measure at the other end of the optic fiber

 Low SNR

Try to use wider pulse or increase average time, and make another try

 Incorrect parameter configuration

Check parameter configuration, and make another try

4.3 Information Window

Items of information window: measurement parameters, analysis parameters, and

information regarding markerA/B. For details regarding information window, please refer to 3.4.2 OTDR information window.

User’s Manual for OTDR

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4.3.1 Switch between Information Window Items

Under GUI of Figure 4-4., press [ ] and the items of information window will display in circulation: measurement parameter→ analysis information→ Event list→ information of markerA/B →fiber →measurement parameter.

4.3.2 Review Event List

Under GUI of Figure 4-4, press [ ], items in information window will switch to event list information.

Use [ ] and [ ] too highlight or , then press [Enter] to review events list, is to browse upwards and downwards; or to browse events list upwards and downwards by the combining hot key [Shift/ ]+[ ] and [Shift/ ]+[Enter] in the

keyboard

4.3.3 Review MarkerA/B Information

4.3.3.1 Switching between MarkerA/B

Under GUI of Figure 4-4., use [ ] and [ ] to highlight

, then press [Enter] to switch

between marker A/B. Use [ ] and [ ] to move marker A or B.

4.3.3.2 Information between MarkerA/B

Under GUI of Figure 4-4., press [ ] switch information window to marker A/B. Press[ ]or[ ] to change the position of marker A or B,and information of marker A/B will

change accordingly in information window.

4.4 Zoom in Trace Horizontally

This function is designed for users to review details of every event more carefully.

 Under GUI of Figure 4-4.,use [ ] and [ ] to highlight ,then press [Enter]

to zoom in trace horizontally; or to zoom in trace horizontally by the combining hot key [Shift/ ]+[ ] in the keyboard

User’s Manual for OTDR

- 35 -

 Press [ ] or [ ] to move marker to the event point to be observed  To examine information of event point ,please according to”4.3.3.1 Switching

between Marker A/B”

4.5 Zoom out Trace Horizontally

This function is to zoomout trace horizontally. Under GUI of Figure 4-4., use [ ] and [ ] to highlight , and press [Enter] to zoom

out trace. or to zoom out trace horizontally by the combining hot key [Shift/ ]+[ ] in the keyboard.

4.6 Zoom in Trace Vertically

This function is designed for users to review event points more carefully.

 Under GUI of 4-4, press [ ] and [ ] to highlight , then press [Enter] to

zoom in vertically; or to zoom in trace vertically by the combining hot key [Shift/ ]+[ ] in the keyboard

 Use [ ] and [ ] to mover marker to event point to be observed  For details, please refer to 6.3.3.1switching between MarkerA/B

4.7 Zoom out Trace Vertically

This function is designed to zoom out trace vertically.

 Under GUI of Figure 4-4, press [ ] and [ ] to highlight , then press [Enter]

to zoom out trace vertically. or to zoom out trace vertically by the combining hot key [Shift/ ]+ [ ] in the keyboard.

4.8 Re-analyze the trace

While the test result at a certain threshold is not good enough, it can be re-analyzed by this function (to change the threshold). Please note that this function can be effective while the OTDR is disconnected from the fiber.

 Under parameter configuration menu, edit the threshold value you want, press

[ ] to exit parameter configuration menu, then press [ ] to re-analyze the

User’s Manual for OTDR

- 36 -

trace.

4.9 Save Trace

When auto or manual measurement is finished, the measurement trace can be saved. Contents of trace saved include: Trace curve, related information of trace.

 Under GUI of Figure 4-4., use [ ] and [ ] to highlight , then press [Enter]

to enter, as shown in Figure 4-5.

Figure 4-5. Save Trace

 Input filename: use [ ],[ ],[ ] and [ ] to choose the alphabet or Arabic

numerals one by one, and press [Enter] to confirm. The length of filename will not exceed 8 characters of alphabet or Arabic numerals

 Save file: use [ ],[ ],[ ] and [ ] to highlight “OK”, press [Enter] to save  Cancel saving file: use[ ],[ ],[ ] and [ ] to highlight “cancel”, press [Enter]

to cancel the operation of “save file”

 Delete alphabet/Arabic numerals: use [ ],[ ],[ ] and [ ] to highlight

“Delete”, press [Enter] to delete the alphabet/Arabic numerals

 Memory space: 118/300 means that total memory space is 300 files; it has already

saved 118 files so far

4.10 Browse Saved Traces

Under GUI of Figure 4-4, use [ ] and [ ] to highlight , press [Enter] to confirm, as shown in Figure 4-6.

30s

80km

1.4666

2.5us 1550nm

Avg.Time: Range:

IOR :

Pul seWidth: Wavelengt h:

8Km/Div

3.50dB/Di v tra ce1.trc Pa ra-1

C a n c e l

ABCDEFGHIJKLM

NOPQRSTUVWXYZ

0123456789 _

S p a c e U se d : 1 1 8 / 3 0 0

S a v e D e l e t e

RACE0

Samp. Di st.: 5.11m

User’s Manual for OTDR

- 37 -

Figure 4-6. Browse Saved Traces

 Use [ ] and [ ] to highlight the certain trace, then use [ ] and [ ] to choose

[Open] or [Cancel]; Press [Enter] to confirm

 Memory space: 118/300 means that total memory space is 300 files; it has already

saved 118 files so far

4.11 Upload Saved Traces

Saved traces can be uploaded to PC through the associated software of trace manager, with which traces can be further processed on PC.

 Install the software, and run  Power off OTDR  Connect OTDR to PC through RS232(or USB) interface cable  Power on OTDR, and upload data with the software. The whole process is as in

Figure 4-7.

30s

80km

1.4666

2.5us 1550nm

Avg.Time: Range:

IOR :

Pul seWidth: Wavelengt h:

8Km/Div

5.00dB/Di v tra c e1

Para-1

Upl oa d files Waiting! (4 /8)

Samp.Di st.:

5.11m

Figure 4-7. Upload Saved Traces

30s

80km

1.4666

2.5 us 1550 nm

Avg. T ime:

Range:

IOR :

PulseWidth: Wavelength:

8Km/Div 3 .50dB /Div trace1. trc 15:20

S e l e c t f i l e : 1 1 8 / 3 0 0

Trace001

Trace002 Trace003 Trace004 Trace005

C a n c e lOp e n

Trace006 Trace007 Trace008

27- May-2005 10 :30

Range: 80km Pwidt h: 2.5us Wavelen.:

1550nm

User’s Manual for OTDR

- 38 -

 Make sure the instrument is power off when connecting to PC through RS232(or

USB) data cable; Make sure it’s fastened, then power off.

 USB sustains the electrification hot plug. However USB operation rules must be

obeyed while connecting to PC. To install USB driver correctly is necessary before uploading the data; Make sure USB is pulled out safely. Otherwise it will result in losing data.

 This operation cannot be applied under GUI of parameter configuration, save trace,

browse saved traces, and measuring in progress.

4.12 Alter Measurement in Realtime Testing (For OTDR-S20C only)

To alter measurement in realtime testing, follow these steps:

 Use [ ] and [ ] to highlight “ ”, and the press [Enter]. A parameter will

appear at the bottom of the screen.

 use [ ] and [ ] to move the parameter to be changed(Figure 4-8), and the press

[Enter].

 Use [ ] and [ ] to change the Ref value. Select “Averaging” to select

averaging testing.

 Press “OK” to exit the parameter configuration menu.

©~

8Km/Div 5.00dB/ D i v

Range: Wavelengt h: 1550nm

Event

80 km Pul seWidth: 2.5us

IOR: 1.4677

< Averagi ng>

<OK>

Figure 4-8. Realtime Testing

User’s Manual for OTDR

- 39 -

5. Maintenance and Calibration

Maintenance and Replacing of Batteries

Battery for this instrument is rechargeable NiMH battery.

Notes for maintenance of batteries in the instrument:

 In order for the OTDR (including the batteries) to meet specifications, the storage

temperature should be within 15 ℃to 30℃. And the instruments should be stored in low humidity environments

 If the instrument is left unused for a long time (idle for over 2 months), it is

recommended to recharge the battery every other month

 As in figure 5-1, procedure of replacing battery is as follows.

a) Take off cover of the battery chamber b) Remove the battery and drow out socket from the jack of chargeable battery,

then change the battery if necessary

c) Remove the RTC clock battery, then change it if necessary

RTC Clock

Battery

Chargeable

Battery

Jack for

Chargeable

Battery

Figure 5-1. Replacing Battery

User’s Manual for OTDR

- 40 -

Cleaning of Interfaces

Interfaces must be kept clean. Special alcohol may be used to clean optic output. Always replace protective dust caps when the unit is not being used, and keep the protective dust caps clean. In addition, flanges must be kept clean periodically,

 Effects of Cleaning Interfaces and Connectors

The diameter of optic core is 9um, and diameter of dust and other particulates ranges from 1/100 to 1/1/10 um. Comparatively speaking, the size of dust and other particulates can cover part of optic end and therefore degrade the performance of the instrument.

In addition, power density may burn dust into optic fiver and induce further damage(for example, 0dBm optic power may produce about16000000W/m*m power density in single mode fiber). In this case, measurement will be inaccurate and irreversible.

 Safety instructions to be followed before cleaning

a) Make sure the instrument is power off when cleaning b) Any operations contradict to the instructions may result in dangerous laser

injuries c) Make sure laser source is off, when clean any optic connectors d) When the instrument is in operation, please always avoid looking directly

into optic output. Although laser radiation is invisible, it may do serious

injury to eyesight e) Be cautious of electric shock and make sure AC power isdisconnected with

the instrument before cleaning. Always use dry or moistest soft cloth to clean

the outside of the instrument, and never clean the inside f) Please do not add any accessory to optic instrument or adjust the instrument

at discretion g) For maintenance, always go to qualified or certified professionals

 Tools for Cleaning Interfaces and Connectors

a) Optic fiber cleaner (for cleaning of optic connectors) b) Optic fiber cleaning rod (for cleaning of optic outputs) c) Optic fiber cleaning tissue (for cleaning optic interfaces) d) Isopropyl alcohol e) Cotton ball

User’s Manual for OTDR

- 41 -

f) Paper tissue g) Cleaning brush h) Condensed air

 Preferred Procedure for Cleaning Interfaces and Connectors

As in Figure 5-2. Preferred Procedure is as follows:

a) Screw off the cap of flange b) Clean the laser head carefully c) Screw on the cap of flange

Figure 5-2. Structure of Flange

Calibration Requirements

Calibration of the instrument is recommended every two years. Please contact our representatives or nearby customer service centers for proper calibration.

User’s Manual for OTDR

- 42 -

6. Specifications

Optical Specifications

（1）

OTDR-S13A

OTDR-S15A

Dynamic Range (dB)

（2）

Wavelength (± 20nm)

1310

1550

Display Type

Colorful

Fiber Type

Single mode

Selectable Ranges (km)

0.3/1.3/2.5/5/10/20/40/80/120

Pulse Widths (ns)

12/30/100/275/1000/2500

Average Time (s)

15/30/60/120/180

Attenuation Dead Zone (m)

（3）

Event Dead Zone (m)

（3）

Sampling Range (m)

1~10

Sampling Points

16000 Points (Maximum)

Distance Measure Accuracy

±(1 m + 5×10-5×Distance (m)+ sampling space)

Attenuation Measure Accuracy

0.05dB/dB

Reflection MeasureAccuracy

±4dB

Measurement Data Storage

300 test curves

Connector Type

FC/PC (interchangeable SC,ST)

Data Transmission

RS-232/USB port

The definition of XtendLan OTDR series models is shown as follows:

a) The two digits represent different wavelength: “S13” for 1330nm, “S15” for

1550nm.

b) The alphabet of A followed the one digit, stands for different dynamic range.

Please find the model rule as below.

User’s Manual for OTDR

- 43 -

palmOTDR-XXX

Wavelength: S13:1310nm S15:1550nm

Dynamic Range: A:24dB

Figure 6-1. Model Illumination 1

Other Parameters

Power Supply

NiMH chargeable battery/AC adapter, auto recharging

Battery Capacity

Support over 8 hours operating on one charge or >20 hours standby

Operating Temp.

0℃ to 50℃

Storage Temp.

-20℃ to 70℃

Relative Humidity

10 to 90% (non-condensing)

Weight

0.87kg

Dimension (H x W x T)

7.7×3.9×2.4 inch (196×100×60mm)

User’s Manual for OTDR

- 44 -

Optical Specifications

(1)

OTDR-S20A

OTDR-S20C

OTDR-M20A

Dynamic Range (dB)

(2)

24/24

32/32

18/22

Wavelength (± 20nm)

1310/1550

850/1300

Display Type

Colorful

Fiber Type

Single mode

Multiple mode

Selectable Ranges (km)

0.3/1.3/2.5/5/10/20/40/80/120/160/240

(3)

0.1/0.3/0.5/1.3/2.5/5/10@ 850nm

0.1/0.3/0.5/1.3/2.5/5/10/ 20/40/80@1300nm

Pulse Widths (ns)

5/10/12/30/100/275/300/1000/

2500/10000/20000

(4)

12, 30, 100, 275,

1000@850nm

30, 100, 275,

1000/2500@1300nm

Average Time (s)

15/30/60/120/180

Event Dead Zone (m)

(5)3(5)

(6)

Attenuation Dead Zone (m)

(5)15(5)

(6)

Sampling Range (m)

1~10

0.1~15

1~10

Sampling Points

16000 Points (Maximum)

Distance Measure Accuracy

±(1 m + 5×10-5×Distance (m)+ sampling space)

Attenuation Measure Accuracy

0.05dB/dB

Reflection MeasureAccuracy

±4dB

Measurement Data Storage

300 test curves

Connector Type

FC/PC (interchangeable SC,ST)

Data Transmission

RS-232/USB port

Visible Laser Source(For OTDR-S20C only)

Output Power(dBm)

≥-3

Max. Meas. Range(km)

Note: (1)Specifications describe the instrument’s warranted performance, measured with typical PC-type connectors. Uncertainties due to the refractive index of fiber are not considered; (2)The dynamic range is measured at maximum pulse width within average time of 3 minutes; (3)Among the selectable ranges, 160km and 240km only for type C; 120 km only for typeA; (4)Among the pulse widths, 5ns,10ns,300ns, 10us and 20us only available for type C; 12ns and 275ns only available for type A; (5)Conditions for blind Measurement: Reflection events are within a range of 4km; reflection intensity is less than -35dB; and the blind zone is measured at the minimum pulse width; (6)Conditions for blind Measurement: Reflection events are within a range of 1km; reflection intensity is less than -32dB; and the blind zone is measured at the minimum pulse width.

User’s Manual for OTDR

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The definition of XtendLan OTDR series models is shown as follows:

a) The three digits represent different mode and wavelength: “S20” for single mode

and 1310/1550nm, “M20” for multiple mode and 850/1300nm. b) The alphabet of A and C followed the two digits, stands for different dynamic range.

Please find the model rule as below.

palmOTDR-XXX X

WavelengthŁş S20(single mode):1310/1550nm

M20(multiple mode):850/1300nm

Dynamic Range: A:24dB for single mode and 18/22dB for multiple mode

C:32dB for single mode

Figure 6-2. Model Illumination 2

Other Parameters

Power Supply

NiMH chargeable battery/AC adapter

Battery Capacity

Support over 8 hours operating on one charge or >20 hours standby

Operating Temp.

0℃ to 50℃

Storage Temp.

-20℃ to 70℃

Relative Humidity

10 to 90% (non-condensing)

Weight

0.87kg

Dimension (H x W x T)

7.7×3.9×2.4 inch (196×100×60mm)

7. Warranty Information

Terms of Warranty

All XtendLan products are warranted against defective material and workmanship for a period of one (1) year from the date of shipment to the original customer. Any product found to be defective within the warranty period would be repaired or replaced by XtendLan Inc. free of charge.

In no case will XtendLan, Inc. liabilities exceed the original purchase price of the product.

Exclusions

The warranty on your equipment shall not apply to defects resulting from the following:

 Unauthorized repair or modification  Misuse, negligence, or accident

XtendLan, Inc. reserves the right to make changes to any of its products at any time without having to replace or change previously purchased units.

Warranty Registration

A warranty registration card is included with the original shipment of equipment. Please take a few moments to fill out the card and mail or fax it to the local Customer Service Center of XtendLan, Inc. to ensure proper initiation of your warranty term and scope of your warranty.

Returning Instruments

To return instrument for reasons of yearly calibration or other, please contact the local Customer Service Center of XtendLan, Inc. to obtain additional information and a RMA# (Return Materials Authorization number). And describe briefly reasons for the return of the equipment, to allow us offer you more efficient service.

To return the instrument in the case of repair, calibration or other maintenance, please note the following:

 Be sure to pack the instrument with soft cushion like Polyethylene, so as to protect the

shell of the instrument.

 Please use the original hard packing box. If use other packing material, please ensure at

least 3 cm soft material around the instrument.

 Be sure to correctly fill out and return the warranty registration card, which should

include the following information: company name, postal address, contact, phone number, email address and problem description.

 Be sure to seal the packing box with exclusive tape.  Be sure to ship to your representative or the agent of the Company in a reliable way.

Contacting Customer Service

Please check our web site (www.xtendlan.com) for updates to this manual and additional application information. If you need technical or sales support, please contact localXtendLan Customer Service.

XtendLan OTDR User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual