1Micro OTDR Module

Micro OTDR Modulefor the MTT

MAN-22422-US001 Rev. C00

302 Enzo Drive San Jose, CA 95138

Tel: 1-408-363-8000 Fax: 1-408-363-8313

User’s ManualSSMTT-35E/M

2 SSMTT-35

Warning!Using the supplied equipment in a manner not specified by Sunrise Telecom may impair the protection provided by the equipment.

LASER Cautions• Thisisaclass1laserproduct.Avoidlookingdirectlyatthe

transmitter source.• Useofcontrolsandproceduresotherthanthosespecifiedin

this manual may result in exposure to hazardous laser radia-tion.

• Unterminatedopticalconnectorsmayemitlaserradiation.Donot view with optical instruments.

End of Life Recycling and Disposal InformationDO NOT dispose of Waste Electrical and Electronic Equipment (WEEE) as unsorted municipal waste. For proper disposal return the product to Sunrise Telecom. Please contact our local offices or service centers for information on how to arrange the return and recycling of any of our products.

EC Directive on Waste Electrical and Electronic Equipment (WEEE) The Waste Electrical and Electronic Equipment Directive aims to minimize the impact of the disposal of elec trical

and electronic equipment on the environment. It encourages and sets criteria for the collection, treatment, recycling, recovery, and disposal of waste electrical and electronic equipment.

Disclaimer: Contents subject to change without notice and are not guaranteed for accuracy.

© 2010 Sunrise Telecom Incorporated. All rights reserved.

3Micro OTDR Module

Micro OTDR Module

1 Micro OTDR Module ..........................................51.1 Module Panel .....................................................................5

1.2 Test Set LEDs ....................................................................5

2 Menus .................................................................72.1 OTDR ................................................................................82.1.1 Configuration ..................................................................82.1.2 Measurement ................................................................122.1.2.1 MMC Card .................................................................152.1.3 Calibration ....................................................................15

2.2 Light Source ....................................................................16

2.3 Optical Power Meter ........................................................17

2.4 VFL ..................................................................................19

2.5 View Test Result ..............................................................202.5.1 Saving a Test ................................................................212.5.2 Viewing a Stored Test ...................................................212.5.3 Printing a Stored Test ...................................................212.5.4 Deleting a Stored Test ..................................................212.5.5Locking&UnlockingaStoredTest ...............................212.5.6 Renaming a Stored Test ...............................................22

2.6 R-Viewer OTDR PC Software Viewer (SSMTT-35 PC) ....23

3 Applications .....................................................35

4 Reference .........................................................374.1 Handling of Optical Fiber .................................................374.1.1 Fiber Optic Patch Cord Basics......................................374.1.2 Fiber Optic Connectors .................................................384.1.3 Cleaning Optical Fiber ..................................................394.1.4 Eye Safety ....................................................................394.1.5 Summary ......................................................................39

5 General Information ........................................415.1 Testing and Calibration Statement ...................................41

5.2 Express Limited Warranty ................................................41

Index ......................................................................43

4 SSMTT-35

5Micro OTDR Module

1 Micro OTDR Module

The OTDR module finds “events” (or “obstacles”) on a fiber and calculates the distance to each event. It then displays a trace and produces an event table for the events that can be saved for future reference.

To get the best use from this equipment and ensure its safe opera-tion, please spend a few minutes to read this manual.

1.1 Module Panel

SSMTT-35A, -35C, and -35D

ON

SSMTT-35E

OTDRSourcePower MeterVFL

OTDR1550 nm1310 nm

ONON

Figure 1 SSMTT-35 Connector Panels

The SSMTT-35A, -35C, and -35D modules each have one optical port that is used for all OTDR measurements. They also have an LED to the left of the Input port. When it is on (RED), this indicates that the laser is on. The SSMTT-35E has three optical ports. The left port is used for the VFL (Visual Fault Locator), and has a universal connector which allows mating to most fiber adapters. The center port is used for the OPM (Optical Power Meter). The right port is used for OTDR measurements and for the LS (Light Source).

Note:Alwayskeepopticalconnectorscleantoensuremeasure-ment accuracy.

1.2 Test Set LEDs

The module does not use any test set LEDs. It does however indicate its use by an illuminated MODULE or xDSL LED.

6 SSMTT-35

7Micro OTDR Module

2 Menus

PressPOWERandthechassis/modulewillperformaselfcheck.Ifthesystemcheckisok,an“OTDRselfcheckok”messagewillflash, and the module main menu will be displayed.

If in the chassis menu, press MODULE to access the module main menu.

If there is a FW (firmware) mismatch, the test set will display the FW upgrade screen. Press ENTER to upgrade FW, or press ESC to stop the procedure.

The menu presented is dependent on the module options. These are shown in Figure 2:

OPTICAL TEST TOOLKIT MAIN MENU

2.2 LIGHT SOURCE

2.1 OTDR

2.3 OPTICAL POWER METER

2.4 VFL

2.5 VIEW/STORE/PRINT

2.1.1 CONFIGURATION

2.1.2 MEASUREMENT

2.5 VIEW TEST RESULT

2.1.3 CALIBRATION

OTDR MAIN MENU

OPTICAL TEST TOOLKIT MAIN MENU

MODULEKey

SSMTT-35A, -35C, and -35D

SSMTT-35E

2.1.1 CONFIGURATION

2.1.2 MEASUREMENT

2.5 VIEW TEST RESULT

2.1.3 CALIBRATION

OTDR MAIN MENUMODULEKey

2.1 OTDR

2.5 VIEW/STORE/PRINT

Figure 2 Module Menu Trees

As shown in Figure 3:

• TheUp,Down,Select,andprevF-keysthatappearinmostscreens can be used in place of the , , ENTER, and ESC keypadkeys.

• TheseF-keyscanbeindifferentpositions.

8 SSMTT-35

2.1 OTDR

If the test set is set up, press AUTO to start testing in the following screen. Refer to Section 2.1.2 for an explanation of the measure-ments. If the test set needs to be setup, select CONFIGURATION and refer to Section 2.1.1. If operating the module for the first time, perform the calibration described in Section 2.1.3.

Testing Wavelength12:03:4312:03:43 1310

OTDR MAIN MENU

CONFIGURATION MEASUREMENT VIEW TEST RESULT CALIBRATION

Press AUTO to start measurement

Up Down Select prev Use these F-keys or the associated keypad keysto navigate, make selections, or escape from a screen.

ENTER ESC

Figure 3 Main Menu Screen

2.1.1 Configuration

11:50:45 1550

CONFIGURATION

ANALYSIS THRESHOLD LOSS :0.02 dB DUAL TRACES DISPLAY 1. CURRENT 2. NONE MEASUREMENT DISPLAY DISPLAY GRID: ON RECORD ID JOB ID:Job0001 CABLE ID:Cbl0001 FIBER ID:Fbr0001

AUTO MANUAL

11:50:45 1550

CONFIGURATION

MODE : AUTO DISTANCE UNIT : KM MEASUREMENT SETUP WAVELENGTH : 1550 nm AVERAGE : N/A DISTANCE : N/A km PULSE WIDTH : N/A ns FIBER CHARACTERISTIC REFRACTIVE INDEX :1.4682 BACKSCATTER COEFF:-81.0 dB

prev

Figure 4 Configuration Screens

Configure the following items in the first screen shown on the left in Figure 4:

MODEOptions: AUTO (F1), MANUAL (F2)• AUTO:Ifselected,AVERAGE,DISTANCEandPULSEWIDTH

are automatically configured. Auto analysis will be performed in this mode and an Event table will be provided.

To optimize the resolution and distance range of OTDR mea-

9Micro OTDR Module

surement, the test set performs auto-mode analysis by using the 10 µs pulse to find the end of fiber, and then sets the proper pulsewidth (basedon thedistance) froma lookup table. IfDUAL TRACES are selected, the pulse width is the same for both wavelengths and is selected based on the wavelength with the higher insertion loss.

The measurement time is dependent on the length of the opti-cal fiber and should not be longer than 3 minutes.

• MANUAL:Ifselected,configureAVERAGE,DISTANCEandPULSE WIDTH. An Event Table is provided in this mode.

DISTANCE UNITOptions: KM (F1), MILE (F2), KFT (F4)Determinetheunitofmeasurement,kilometer,mile,or1000feet.

The following items are under MEASUREMENT SETUP:

WAVELENGTHOptions: 1310 (F1), 1550 (F2), BOTH (F4)

Select the testing wavelength of the laser or use both. If BOTH is selected, see Section 2.1.2-TRACE for more information.

AVERAGEOptions: 30 (F1), 60 (F2), 120 (more, F1), 180 (more, F2), 240 (more F1), 600 (more, F2)

Select the number of trace averages in seconds. This item can be automatically configured, see MODE.

DISTANCEOptions if DISTANCE UNIT is set for KM: 10 (F1), 20 (F2), 40 (more, F1), 80 (more, F2), 120 (more, F1)

Options if DISTANCE UNIT is set for MILE: 6.25 (F1), 12.5 (F2), 25 (more, F1), 50 (more, F2), 75 (more, F1)

Options if DISTANCE UNIT is set for KFT: 33 (F1), 66 (F2), 132 (more, F1), 264 (more, F2), 394 (more, F1)

Select the maximum measurement distance. The value chosen must exceed the distance of the fiber under test. This item can be automatically configured, see MODE.

PULSE WIDTHOptions: 10 (F1), 30 (F2), 100 (more, F1), 300 (more, F2), 1000 (more, F1), 3000 (more, F2), 10000 (more, F1)

Select the width of the laser pulse in ns. This item can be auto-matically configured, see MODE.

10 SSMTT-35

The following is under FIBER CHARACTERISTIC:

REFRACTIVE INDEXOptions: 1 through 2.0000, default 1.4682 at 1550 nm

RefractiveisalsoknownasIOR(IndexOfRefraction).Thispa-rameter is provided by the fiber manufacturer for each type of fiber. Improper setting of this parameter can affect the distance measurement accuracy. Typical values are 1.4682 at 1550 nm and 1.4677at1310nm.PressSHIFTandusethenumerickeypadto enter a value.

BACKSCATTER COEFFOptions: Fixed at -81.0 dB

Configure the following items in the second screen shown on the right in Figure 4:

The following item is under ANALYSIS THRESHOLD:

LOSSOptions: 0.05 through 1.00

AdjustbypressingSHIFTandusingthenumerickeypad.

Set this to the lowest value when the noise level is low. Increase this value if the Event Table contains too many false events due to a noisy trace.

The following allows for comparisons of stored traces with a cur-rent trace or the comparison of two stored traces depending on how the following two items are configured under DUAL TRACES DISPLAY:

1.Options: RECALL (F1), CURRENT (F2)

Select whether to display the current trace or a stored trace. If RECALL is selected, select a stored trace from the VIEW/STORE/PRINT selection screen and press F1 to load the trace. The test set will display the following message “RECORD IS LOADED”, press ESC to return to the CONFIGURATION screen. The test set will indicate that the stored trace is displayed by indicating its filenameinthetimeofdayclockscreenposition.

2.Options: RECALL (F1), NONE (F2)

Select whether to display no trace or a stored trace. If RECALL is selected, follow the procedure in “1.”. If NONE is selected, the Dual trace feature is disabled.

11Micro OTDR Module

The following is found under MEASUREMENT DISPLAY:

DISPLAY GRIDOptions: OFF (F1), ON (F2)

Choose whether or not to view the result graphic with the grid background.

Use the items under RECORD ID to record information for each measurement by pressing EDIT to display a character entry screen. Use the procedure found in Section 2.5.6 to create a new ID label for JOB ID, CABLE ID, and FIBER ID.

When finished, connect the test set to fiber and press AUTO to start the measurement.

12 SSMTT-35

2.1.2 Measurement

EVENT prev more

SUMMARY ZOOM prev more

MARKER 4PT-LSA prev more

SAVE PRINT prev more

START SETUP prev more

meas01_1550 10km 100ns 1310 AUTO34

27

20

13

6

2 4 6 8 km DIST.A ATTN dB A-B km A-B 3.2744 -8.493 -2.222 0.262

Cursor

prev

meas01_1550 10km 100ns 1310 AUTONo Location Loss Reflect 4.124 Km 1.31 dB 6.623 Km 0.71 dB -40.5 dB 10.000 Km 7.38 dB -14.1 dB

See Figure 6 Not available

See Figure 7

See Figure 8Figure 5 Measurement Screens

ThefollowingF-keysshowninFigure5areavailable:

START/STOP (F1): After connecting the fiber to the OTDR, press F1 to start the measurement. The following can happen:

• Ifthereisnofiberconnectedorthefiberhasabadconnector,the screen will display: “No fiber connected”.

• Iftheconnectedfiberhasalivesignal,thescreenwilldisplay;“Warning: Live fiber connected to OTDR. Disconnect immedi-ately”. The OTDR cannot function properly if the fiber has live signal and it can be damaged if optical power is >10 dBm.

If conditions for measurement are correct:

The elapsed time will appear underneath the trace. The OTDR LED will be on (red) and in the upper right corner of the screen, AUTO or MAN, depending upon select mode, will flash. The trace will refresh itself several times during the measurement, depend-ing upon the selected measurement time.

When the measurement is finished, the screen will display a trace of the results as shown in the right screen in Figure 5. In that screen, the top line to the right of the filename indicates the selectedmeasurementlength(10km),pulsewidth(100nS)andthe laser wavelength (1310).

Below the trace, the screen shows the position of the ‘A’ and ‘B’ markers,theinsertionlossbetween‘A’and‘B’,andthedistance

13Micro OTDR Module

betweenmarkers,‘B’-‘A’.Ifeventsotherthantheendoffiberaredetected,themarkerswillautomaticallybelocatedonthefirsttwoevents. Otherwise, they will be at the left side of the trace.

At any time during the measurement, press F1 to stop.

SETUP (F2): Press to display the CONFIGURATION screens shown in Figure 4.

TRACE(more,F1):ThisF-keyisavailableifintheCONFIGURA-TION screen, WAVELENGTH is set for BOTH. During measure-ment, the test set will then perform two traces, one at 1310 and the other at 1550. When finished the test set will display the 1310 trace in green, the 1550 in red. The two traces are then put over eachotherforcomparison.Theonscreeninformationandmark-ersisforthetoptrace.Toviewinformationandmarkersforthebottom trace, press TRACE to place it on the top.

EVENT(more,F2):PressthisF-keytodisplaytheleftEventscreenshown in Figure 5. This screen will list all events or faults for the displayed trace. If the BOTH option as mentioned in TRACE is used, TRACE (F1) is available, press it to show the events from the other trace. When finished, press F3 to return to the right screen shown in Figure 5.

SUMMARY (more F1): This function will be activated in a future software release.

ZOOM(more,F2):PressZOOMtodisplaythefollowingF-keysshown in Figure 6; MARKER (F1) and ZOOM+ (F2). PressMARKERtoactivateeitherthe‘DIST.A’orthe‘DIST.B’marker.Press to move the active marker. Initially, ZOOM+ F-keyisdisplayed.PressZOOM+tozoomthetracebetweenthetwomarkers.ZOOM-(F4) isnowdisplayedanwillsend thezoomscalebacktothepreviouszoomlevel.Whenfinished,pressF3to return to the right screen shown in Figure 5.

MARKER prev

meas01_1550 10km 100ns 1310 AUTO34

27

20

13

6

0.0 0.1 0.1 0.1 km DIST.A ATTN dB A-B km A-B 0.0329 592.880 23.085 0.039

ZOOM-MARKER ZOOM+ prev

meas01_1550 10km 100ns 1310 AUTO34

27

20

13

6

2 4 6 8 km DIST.A ATTN dB A-B km A-B 3.2744 -8.493 -2.222 0.262

Figure 6 Measurement Zoom Screens

14 SSMTT-35

MARKER(more,F1):PressMARKERtomakeeitherthe‘A’or‘B’markeractive.Use tomovetheactivemarker.If4PT-LSAisused,pressingMARKERcyclesthrough‘b’,‘B’,‘A’,and‘a’mark-ers.ThemarkersintheleftscreeninFigure7indicate:• DIST.B:Distancefromthetestsettothesecondevent.• ATTN:AttenuationlossindB/kmbetweenthetwomarkers.• dBA-B:Lossindbbetweenthetwomarkers.• kmA-B:Distanceinkmbetweenthetwomarkers. Note:Thiscandisplaykmforkilometer,Miformile,orkftfor

kilofeet,dependingonthesettingforDISTANCEUNITintheCONFIGURATION screen.

Active marker (B) in red.

Inactive marker (A) in blue.

MARKER 4PT-LSA prev

meas01_1550 10km 100ns 1310 AUTO34

27

20

13

6

2 4 6 8 km DIST.B ATTN dB A-B km A-B 3.245 -1.647 2.408 -1.462

more

2 Point View

MARKER 2 PT prev

meas01_1550 10km 100ns 1310 AUTO34

27

20

13

6

2 4 6 8 km DIST.a 4-pt Loss 3.6809 1.003

more

4 Point View

Active marker (a) in red.Inactive markers (A,B, and b) in blue.

Figure 7 Measurement Screen with Markers

4PT LSA/2PT (more, F2): The 4 Point Least Squares Analysis shown in the right screen of Figure 7 , is used to measure the insertionlossacrossanevent.Usethe‘a’and‘A’markerstoselectthe portion of the trace right before the event, being careful not toincludeanyotherevents.Usethe‘B’and‘b’markerstoselectthe portion of the trace right after the event, being careful not to include any other events. A straight line is approximated using leastsquaresforboththe‘a’and‘A’markersandthe‘B’and‘b’markers.Thedifferenceinthepowerleveldeterminestheinser-tion loss for the event. This is illustrated in Figure 8. Press 2 PT to the left screen in Figure 7.

Event Loss ‘b’

‘a’‘B’‘A’

Markers: ‘a’, ‘A’, ‘B’, and ‘b’

Figure 8 4 Point Least Squares Analysis Detail

15Micro OTDR Module

SAVE (more, F1): Press to store results. Use the right screen in Figure 9 to change the USER ID, CABLE ID, or FIBER ID. Once set, press SAVE (F4), then ENTER in the left screen of Figure 9 to save. These IDs can also be set in the CONFIGURATION screen. If the same IDs are used for multiple tests, the data is saved with an additional xxx number and automatically incremented.

INSERT DELETE INPUT

12:27:47

EDIT XXX ID

Xxx0001

A a B b C c D d E e F f G g H h I i J j K k L l M m N n O o P p Q q R r S s T t U u V v W w X x Y y Z z 0 1 2 3 4 5 6 7 8 9 - _ @ ! # $ % &

SAVE

SAVE THIS MEASUREMENT? JOB ID:Job0001 CABLE ID:Cbl0001 FIBER ID:Fbr0001

PRESS ENTER TO SAVE ESC TO CANCEL F1 TO EDIT JOB ID F2 TO EDIT CABLE ID F3 TO EDIT FIBER ID

In the left screen, press F1, F2 or F3 to Edit the ID and access a character entry screen similar to the right screen. See Section 2.5 for entry procedures.

Figure 9 SAVE Option Screen with ENTRY Screen

PRINT (more, F2): Press to send the trace information, event table, and trace to the test sets serial port for printing.

2.1.2.1 MMC Card

The traces are stored on the MMC card in the Results/SOR folder. Transfer these files to a PC using any commercially available MMC card reader and use the Sunrise PC OTDR application to further analyze the test results using a PC. See Section 2.6.

2.1.3 Calibration

The module is normally calibrated at the factory, and does not need to be recalibrated until the recommended calibration sched-ule (1 year). To calibrate:

1. Select from the main menu > OTDR > CALIBRATION and follow these on screen prompts:

A. “PLEASE CLOSE OPTICAL CONNECTOR!”-Use the sup-plied optical OTDR port cap to cover the port.

B. Press ENTER to start the calibration process, or press ESC to not proceed with the process.

2. “Please Wait” is displayed for a few moments after ENTER is pressed and then the OTDR main menu is displayed indicating that the procedure is completed.

16 SSMTT-35

2.2 Light Source

Use this optional screen shown in Figure 10 to setup the OTDR to be used as a light source.

11:50:45> <>ET:000:00:00 ST:00:00:00<

LIGHT SOURCE

WAVELENGTH : 1550 nm MODULATION FREQ: CW AUTO SHUT-OFF : OFF min

1310 1550 START

Figure 10 Light Source Setup Screen

Configure the following:

WAVELENGTHOptions: 1310 (F1), 1550 (F3)

Choose a wavelength.

MODULATION FREQOptions: 2000 (F1), CW (F2)

Choose a Modulation Frequency

• 2000:SetthelaserModulationFrequencyto2000Hz.• CW:SetthelasertoContinuousWave.

AUTO SHUT-OFFOptions: DEC (F1), INC (F4)

Choose whether to use the auto shut off timer. If used, press F4 to increment the time or press F1 to decrement the time, both in minutes. Setting the time to 0 shuts off the timer.

When finished, press F3 or F4 to start, press it again to stop. When the laser is active ST displays the start time, if the auto shut off feature is used ET shows the elapsed time.

17Micro OTDR Module

2.3 Optical Power Meter

The optional Optical Power Meter shown in Figure 11 can measure 850, 1310, 1550, and 1625 nm wavelengths.

LED LED.TXT

11:50:45

THRESHOLD

MODE : LED.TXT MAX POWER: 5.00 dBm MIN POWER: -50.00 dBm TOLERANCE: 0.50 dBm

SETOFF STARTON SET

11:50:45>ET 000:00:00 ST --:--:--<> < OPTICAL POWER METER MEASUREMENT MODE: BASIC WAVELENGTH : 1550 nm MAX / MIN : ON THRESHOLD : ON UNIT : dB R REFERENCE: 0.00 dBm

0.16 dB R MAX:0.16 MIN:0.16

Figure 11 Optical Power Meter and Threshold Screens

Configure the following:

MEASUREMENT MODEOptions: DARK C (F1), BASIC (F2)Select the measurement mode.• DARKC:Usetocalibratethemodulebycoveringthemodule

Power Meter port with the supplied cover and pressing F1. This must be performed each time that the test set is powered up for an accurate optical power measurement.

• BASIC:Standardpowermeasurementmode.

WAVELENGTHOptions: 850, 1310, 1550, or 1625Choose the expected wavelength to be measured by pressing NEXT (F2) or PREV (F1).

MAX/MINOptions: ON (F1), OFF (F2)If on, the test set will display the MAX: xxx and MIN xxx for the received power.

THRESHOLDOptions: ON (F1), OFF (F2), SET (F3)Select whether to use a set of threshold by pressing ON. To set the threshold parameters, press SET (F3) and set the following parameters shown in the right screen of Figure 11.

MODEOptions: LED (F1), LED.TXT (F2)Determine how the threshold violation is reported.

18 SSMTT-35

• LED:Athresholdviolation is indicatedbythetestsetsER-RORS LED.

• LED.TXT:Athresholdviolation is indicatedbythetestsetsERRORS LED and an on-screen message displayed near the top left of the screen under ET. This message would read FAIL, if the signal is outside the set parameters. If the signal is within the set parameters, the message will read PASS.

MAX POWER, MIN POWER and TOLERANCEUse DEC (F2), INC (F3) to adjust these settings, press F1 to changethevaluesign(+/-).MAXPOWERhasamaximumsettingof 5.00 dBm. MIN POWER has a minimum setting of -0.05 dBm. TOLERANCE has a maximum setting of 2.00.

When finished setting these parameters, press SET (F4) to return to the left screen shown in Figure 11 and continue setting up the measurement with:

UNITOptions: dBm (F1), µW (F2), dB RSelect a unit for the measurement.• dBm:Decibelsreferencedtoonemilliwatt.• µW:Powerinmicrowatt.• dBR:Decibels relative tonoise. If this isselected,entera

value at the REFERENCE line.

REFERENCEIf dB R in UNIT was selected, enter a value for the noise level usingSHIFTandthenumerickeypad.

When finished, connect the module Power Meter port to the fiber and press START to begin the measurement. At this point, ET shows the Elapsed Time and ST shows the Start Time. Press STOP to end the measurement.

19Micro OTDR Module

2.4 VFL

The optional Visual Fault Locator is a visible red light used to locate anomalies in fiber. The connector adapter is a universal adapter which fits most fiber connectors.

11:50:45> <> < VISUAL FAULT LOCATOR

MODULATION FREQ

CONTINUOUS WAVE

CW START2 HZ

Figure 12 Visual Fault Locator Setup Screen

Configure the following:

MODULATION FREQOptions: 2 Hz (F1), CW (F2)

Choose a Modulation Frequency

• 2Hz:Setthelasertoa2Hzpulsewave.• CW:SetthelasertoContinuousWave.

When finished, press F4 to start, press again to stop.

20 SSMTT-35

2.5 View Test Result

Use this feature to store test results to view or print at a later time. To store results, use the procedure in Section 2.5.1.

RENAME UN/LOCK DELETE more

VIEW PRINT more

11:50:45

VIEW/STORE/PRINT Free space: 94015 kbyte NAME TYPE LOCK 1.Cbl0001Fbr00001 MOTDR 2.Cbl0001Fbr00001 MOTDR 3. 4. 5. 6. 7. 8. 9.10.

Figure 13 View/Store/Print Screen

ThefollowingF-keysareavailableinthisscreen.

VIEW (F1): Allows viewing of a selected file, see Section 2.5.2.

PRINT (F3): Allows printing of a selected file, see Section 2.5.3.

RENAME (more, F1): Allows renaming a selected file, see Sec-tion 2.5.6.

UN/LOCK (more,F2):Allows lockingandunlockingafile,seeSection 2.5.5.

DELETE (more,F3):Allowsdeletinganunlockedfile,seeSec-tion 2.5.4.

21Micro OTDR Module

2.5.1 Saving a Test

1. From any screen with a STORE F-key, press it and yourresults are saved with a generic filename that is setup in the CONFIGURATION screen.

2.5.2 Viewing a Stored Test

1. From the module’s main menu, select VIEW TEST RESULT.2. Select the desired file with .3. Press VIEW (F1) and the stored result will appear.4. Useanyoftheavailablekeystoviewyourstoredresults.5. When finished, press ESC to return to the VIEW/STORE/

PRINT screen.

2.5.3 Printing a Stored Test

1. Connect a SunSet printer to the serial port of the test set.• Forothertypesofprintersorformoreinformation,refertothe

Storing and Printing chapter in the test set user’s manual.

2. From module’s main menu, select VIEW TEST RESULT.3. Select the desired file with .4. Press PRINT (F3) and the file will begin printing.5. When finished, press ESC to return to the VIEW/STORE/

PRINT screen.

2.5.4 Deleting a Stored Test

1. From the module’s main menu, select VIEW TEST RESULT.2. Select the desired file with .3. Press DELETE (more, F3) and the file is deleted if the file is

unlocked.

2.5.5 Locking & Unlocking a Stored Test

1. From the module’s main menu, select VIEW TEST RESULT.2. Select the desired file with .3. PressUN/LOCK(more,F2)andthefileislockedorunlocked

asindicatedtotherightofthefilename.Refertothelockiconshown in Figure 13.

22 SSMTT-35

2.5.6 Renaming a Stored Test

1. From the module’s main menu, select VIEW TEST RESULT.2. Select the desired file with .• PressUN/LOCK(more,F2)ifthefileislockedasindicatedby

thelockiconasinFigure13.

3. PressRENAME(more,F2)andacharacterscreenliketheone shown in Figure 14 is displayed.

VIEW/STORE/PRINT

11:50:45

INSERT INPUT SAVE

FILENAME: SOR 040528_13:33

A a B b C c D d E e F f Gg H h I i J j K k L l M mN n O o P p Q q R r S s Tt U u V v W w X x Y y Z z- / 0 1 2 3 4 5 6 7 8 9 *# @ _ . ! ? $ % & +

DELETE

Figure 14 Filename Character Entry Screen

4. Press INPUT (F3). Note that the ‘A’ character is highlighted andtheINPUTF-keyhaschangedtoSTOP.

5. Use to move the cursor a desired character.6. Press ENTER to place the desired character in the FILENAME

line. Continue this process until the name is complete. Enter up to 15 characters.

• Ifamistakeismadeintheentry:A. Press STOP (F3).B. Move the FILENAME cursor to the incorrect character.C. Press DELETE (F2) to delete the character or, press IN-

SERT (F1) to insert a character. D. Press INPUT (F3) to select a character. Press ENTER to

insert the new character to the left of the cursor.

7. Press SAVE (F4) to save and return to the VIEW/STORE/PRINT screen shown in Figure 13.

23Micro OTDR Module

2.6 R-Viewer OTDR PC Software Viewer (SSMTT-35 PC)

Use this optional feature to analyze stored OTDR measurements. To retrieve these files, use the following procedure:

1. Shut down the test set and remove the MMC card.2. Use any MMC card reader and insert the MMC card into it.3. Connect the reader to the PC that contains the OTDR software

and copy the SOR folder to the hard drive. These files can be found in the test sets MMC software card within RESULT > SOR folders. The files have a .SOR name.

4. Launch the R-Viewer software and use File > Open window to select one of the just saved files. See Figure 16 for a sample screen and the following for details on its use.

Menu Shortcut Bar

Displays an on-screen keyboard.

No function in viewer mode.

Displays the Save as window.

See Figure 17.

No function in viewer mode.

See Figure 18.

See Figure 24.

See Figure 25.

Figure 15 Menu Shortcut Bar

The OTDR window contains a menu short cut bar shown in detail in Figure 15 with the associated toolbars. It contains many of the functions found within the Menu Bar.

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Men

uS

hort

cut

Bar

Men

u B

ar

Mar

ker

Info

rmat

ion

Dis

pla

yed

Tra

ce

Full

Trac

e V

iew

Grid

Sca

ling

Mea

sure

men

t P

aram

eter

s

Trac

e

Mar

kers

Figure 16 OTDR Main Screen

25Micro OTDR Module

Zoom Toolbar

Horizontal Zoom In

Horizontal Zoom Out

Vertical Zoom In

Vertical Zoom Out

Restore Scales

Figure 17 Zoom Toolbar

TheZoomtoolbarisshowninFigure17.Clickingonanyofthebuttons will change the view of the trace.

In addition to using the Zoom toolbar and the Zoom menu in the Menu bar, zooming can be accomplished by using the PC’s cursor. To do this go to the Menu Bar and select Setup > Preferences. In thePreferencewindow,clickontheGeneraltab.At“Useclickformarkerjump”uncheckit.ClickOKwhenfinished.Onthetrace,usethecursorandholdtheclicktodragarectanglearoundtheareaofinterest.Whentheclickisreleased,theviewwillzoomtothe just drawn rectangle. When finished viewing, use the Restore icon in the Zoom toolbar to return to the unzoomed view.

Mode Toolbar

2 Point Attenuation

LSI Attenuation

Splice Loss Measurem

ent

Reflectance

ORLRefractive Index Change

Trace Info, see Figure 20.

Insert Marks

Delete Marks Between the M

arkers

Table of Marks, Event Table, see Figures 21-23.

Automatic Trace Analysis

Filter

Figure 18 Mode Toolbar

The Mode toolbar allows for selection of the following:

2 Point Attenuation: Displays the distance, attenuation, and at-tenuationslopebetweentwomarkers.Themeasureddatapointthatthemarkerliesonisused.

26 SSMTT-35

LSI Attenuation:Displays thedistancebetween twomarkers.Displays the attenuation and attenuation slope based on a least squaresfitofthedatabetweenthetwomarkers.

Splice Loss Measurement: Use a four point least squares method to calculate the loss across an event, e.g. splice, connector. Use thetwoleftmarkerstodefinethelinearregiontotheleftoftheevent,andthetworightmarkerstodefinethelinearregiontotherightoftheevent.Themiddlemarkerisusedtoidentifythestartof the event. The splice loss is displayed.

Reflectance: To measure a reflection coefficient from two opti-calfiberconnectionsorfromfiberend,placetherightmarkeratthereflectionpulsepeak,andtheleftmarkerdirectlybeforethepeak.

ORL:TotakeanOpticalReturnLossmeasurementofanopticalfibersectionoranentireline,establishmarkersontheendsofthe sections to be measured.

Refractive Index Change: Use this window to determine the refractiveindexofafiberlinkwithaknownlength.

Figure 19 Refractive Index Window

Trace Info: Displays and allows entry of information under the following four tabs shown in Figure 20:

27Micro OTDR Module

Figure 20 Trace Info Tabs

Continuing with Figure 18:

Insert Marks:Insertmarksatleftandrightmarkerlocations.

Delete Marks Between the Markers:Deleteallmarksbetweentheleftandrightmarkers.

28 SSMTT-35

Table of Marks, Event Table: In the Event Tab window shown in Figure 21 contains two tabs, Event and Sections:

Event Tab

Figure 21 Event Table-Event Tab

TheEventtabpresentsalistofmarks,correspondingtoobstaclesin the optical fiber, ordered by type and by location on a trace. Select an event and the corresponding event is highlighted on the trace.

The Event tab allows viewing the number of each event in order and the type of event. The following is reported for each event:

R: Event with reflection.

S: Event without reflection.

km: Distance from the start of the optical fiber to the current event.

dB: Reflection coefficient in event (if applicable).

dB: Attenuation in event (if applicable).

dB/km: Attenuation coefficient of a uniform section of the event.

dB: Total attenuation of the optical fiber section from its start up to the current event.

Comment Field: Use the Comment field to enter notes about the line.

The following buttons are available:

Delete:Usetoremoveaselectedmarkfromthetable.Notethatmarksatthebeginningorendofalinecannotbedeleted.

Markers: Use to show the least squares fitting for the event.

Move: Displays the Event Move window shown in Figure 22:

29Micro OTDR Module

Figure 22 Event Move Window

In the Event Move window, trace data is shown, including the markers’locationsandtheobstacle,withtheparametersmea-surements. Use the inthewindowtomovethemark’slocation.This allows for correcting the parameters of the obstacle. So that theopticalfiberendcanbemarkedinanEventMovewindow,norightsidebasicorsubsidiarymarksareplaced.ClickOKwhenfinished.

Sections Tab

Figure 23 Event Table-Section Tab

TheSectionstabpresentsalistofsectionsmarkedatthetraceanalysis. The following is reported for each item:

km: Distances from the start of the optical fiber up to the start of markedsection.

km:Distancesfromthestarttotheendofthemarkedsection.

dB:Completeattenuationofthemarkedsection.

dB/km:Attenuationcoefficientofthemarkedsection.

30 SSMTT-35

dB: Reflection coefficients (if entered) and attenuation in het-erogeneity, without the dimension; horizontal legends aboveheterogeneity.

Comment Field: Use the Comment field to enter notes about the line.

The following buttons are available:

Delete:Usetoremoveaselectedmarkfromthetable.Notethatmarksatthebeginningorendofalinecannotbedeleted.

Markers: Use to show the least squares fitting for the event.

Move: Displays the Event Move window shown in Figure 22.

Continuing with Figure 18:

Automatic Trace Analysis:Clicktogenerateaneweventtableoverwriting the old event table. To change threshold values before doing an automatic analysis, see Figure 25.

Filter:Clicktorunthenoisereducingfilter.Clicktwicetodisplaythe unfiltered trace.

Compare ToolbarThe next item in the Menu Shortcut bar is the Compare toolbar. Use it to compare stored traces with each other.

Copy Trace

Paste Trace

Delete Trace

Keep Template

Apply Template

Figure 24 Compare Toolbar

The Compare toolbar contains the following:

Copy Trace:Clicktocopyadisplayedtrace.

Paste Trace:Clicktopasteacopiedtrace.

Delete Trace:Clicktodeleteadisplayedtrace.

Keep Template:Clicktosaveatraceasatemplate,touseforresults comparison.

Apply Template:ClicktoOverly(paste)atemplateontoanothertrace to get comparison measurements.

Use this procedure to compare traces:1. Open a trace to be compared.

31Micro OTDR Module

2. ClickCopyTraceandclosethetrace.4. Open the other trace that the first will be compared with.5. ClickPastetrace,thepastedtraceisnowdisplayedalongwith

the just opened trace.

Markers ToolbarThenextitemintheMenuShortcutbaristheMarkerstoolbar.Usethesetoolbarstosetandadjustmarkersonthedisplayedtrace.There are two versions of this toolbar shown in Figure 25, the bot-tom one is available only in the Splice Loss Measurement.

Click to make a Marker Active.Move activemarker left.

Select allmarkers.

Move activemarker right.

Figure 25 Markers Toolbars

Onscreentherecanbeuptofourverticalmarkers;activemarkersare indicated by a toolbar button in the pushed position, as in the top toolbar in Figure 25, the red L is active.

Usethemarkerstohighlighttheeventpeaks,andtogetspecificson a particular event.

The top section of the Info Panel (as in Figure 16) to the left of thetracewindowpresentsdatarelatingtothemarkers,showingtheir location and dB measurement.

The following items are only available in the Menu Bar:

Backscatter Coefficient: In the following window, enter a new valueforthebackscattercoefficient.

32 SSMTT-35

Figure 26 Backscatter Coefficient Window

Thresholds: This item is in the Mode menu. Use it to adjust the threshold settings for a new analysis.

Figure 27 Thresholds Window

Preferences: This item is in the Setup menu. Use this to set vari-ouspreferences.ClickingResetforcesallPreferencestofactorydefault settings. The window tabs are shown in Figure 28:

33Micro OTDR Module

Figure 28 Preferences Tabs

34 SSMTT-35

Colors: This item is in the Setup menu. Use it to set various color preferences for the trace display.

Figure 29 Colors Setup Window

About: This item is in the Help menu. Use it to view the software version of the OTDR viewer.

Figure 30 About Window

35Micro OTDR Module

3 Applications

Use the OTDR module for installation and maintenance of fiber opticlinks.InOTDRterms,faultsarereferredtoas‘events’.Theoptical fiber can be any length up to the dynamic range of the OTDR.

Testing involves setting up and connecting the test set to the fiber and following the procedures and suggestions outlined in Sections 2.1 and 2.2 and as required by the fiber optic line you wish to test.

Use the OTDR to:

• Locateanyfaultsorconnectoronafiber.• Verify linkcharacteristicssuchasfiber length,fibersection

loss and attenuation.• Conductbackreflectiontesting.

36 SSMTT-35

37Micro OTDR Module

4 Reference

This section contains material to help you better understand the technologyyouareworkingwith.

4.1 Handling of Optical Fiber

Proper handling of optical fiber cables, connectors, and equipment is important in obtaining accurate measurements and prevent-ing potential transmission problems. This section reviews proper handling procedures for optical fiber.

Figure 31 Optical Connectors and Adapters

4.1.1 Fiber Optic Patch Cord Basics

Fiber optic patch cords come in two categories: Single-mode, which are yellow and Multi-mode, which are orange. The terms ‘single-mode’ and ‘multi-mode’ describe physical transmission mechanisms of the fiber and do not refer to the quality of the fiber. Single-mode and multi-mode transmission equipment are not usu-ally interconnected. Multi-mode is used for shorter transmission distance and in general is less expensive than single-mode.

Considering the fact that an optical fiber is a strand of glass about the same diameter as a human hair, fiber optic patch cords and connectorsareremarkablydurable.However,carefulhandlingwillensure continued high performance and long life. Do not pull or kinkpatchcords,astheglassstrandinthemiddlemightbecomedamagedorbroken.

Even if the fiber is not permanently damaged, a sharp bend will causeexcessivesignalloss.Fiberopticcablesworkbybendingthe light signal as it travels. But, the light can only tolerate so much bending. Keep patch cord bend radii no less than an inch. Use specialized optical cable raceways and plenums whenever avail-able. Never use tie wraps as you would with electrical cables.

38 SSMTT-35

4.1.2 Fiber Optic Connectors

Figure 32 Cross-Sectional View of Connectors

In the electrical world, female connectors are mated to male connectors. In the optical world, the connection mechanism is altogether different. Fiber optic connector systems are designed to aligntwofiberendssothatthelightsignalwillpassbetweenthem;imagine trying to align two hairs end to end. Modern fiber optic connectorsystemssolvethisnearly impossibletask.Thereareseveral types of optical connectors in use today. Figure 31 shows the two most popular, SC and FC. In this example, an SC to FC bulkheadadapterisusedtoconnectthetwofiberstogether.In Figure 32, a schematic of the connector cross section demon-strates the details of the connection mechanism. Ceramic ferrules ontheconnectorendsarekeptinalignmentbyasleeveintheconnectorbulkheadadapter.Thefiber itself ismounted in theexact center of the ferrule. When the ferrules are aligned by the sleeve, so are the fibers. Springs in the connector bodies provide consistent pressure so that the two connector end faces are as-sured to be in contact with each other. Since all tolerances must bekeptextremelytight,itisamazingthatthetypicalconnectorsignal loss is usually less than a couple tenths of a dB.When using optical connectors, insert or remove the ferrule straight into the sleeve. Try to minimize wiggling the connector as this may loosen the tight fit between the ferrule and sleeve. For SCconnectors,orienttheprominentkeyontheconnectorbody(Figure31)withtheslotinbulkheadadapter.Pushtheconnectoruntilitclicks.Toremove,pinchtheconnectorbodybetweenyourthumb and finger, and gently pull straight out.FCconnectorsrequiremorecare.Findthesmallkeyandorientitwiththeequallysmallslotinthethreadedsectionofthebulkheadadapter.EveninFigure31,thiskeyisnotveryvisible.Threadtheouter barrel only lightly finger tight. Never use pliers! Over tight-ening the barrel will not improve signal transmission and could

39Micro OTDR Module

cause permanent damage. To remove, unscrew the barrel, and gently pull straight out.MostproblemswithFCconnectorsareduetokeymisalignment.Thisisdifficulttodetectsinceevenwhenthekeyismisaligned,thebarrelcanbethreaded,whichthenhidesthemisalignedkey.Ahintis when the barrel only catches the first one or two threads. Also, the connectorwillnotbecompletelyseatedinthebulkheadadapter.

4.1.3 Cleaning Optical FiberFiberopticconnectorsmustbekeptcleantoensurelonglifeandto minimize transmission loss at the connection point. When not in use, always replace dust covers and caps to prevent deposits and films from airborne particles. A single dust particle caught between two connectors will cause significant signal loss. Even worse, dust particles can scratch the polished fiber end, resulting in permanent damage. Do not touch the connector end or the ferrules, since this willleaveanoilydepositfromyourfingers.Likewise,donotallowuncapped connectors to drop on the floor. Should a fiber connector become dirty or exhibit high loss, care-fully clean the entire ferrule and end face. Special lint-free pads should be used with isopropyl alcohol. Even though not very ac-cessible,theendfaceinabulkheadadapterontestequipmentcanbe cleaned by using a special lint-free swab, again with isopropyl alcohol. In extreme cases, a test unit may require more thorough cleaning at the factory.Cotton, paper, or solvents should never be used for cleaning since they may leave behind particles or residues. Use a fiber optic cleaningkitespeciallymadeforcleaningopticalconnectors,andfollowthedirections.Somekitscomewithcannedairtoblowanydustoutofthebulkheadadapters.Becautious,ascannedaircando more harm than good if not used properly. Again, follow the directionsthatcomewiththekit.

4.1.4 Eye SafetyIt isgoodsafetypracticetonever lookdirectly intotheendofafiberorbulkheadadapter.Youmaybeworkingwithequipmentthattransmits at high power and are not eye-safe. For added safety, turn the laser off when not in use. In any case, the wavelengths used in telecommunications are not visible, so the presence of an optical signalcannotbedeterminedbylookingintothefiberend.

4.1.5 SummaryTakecareofyourfiber.Alwaysreplacedustcovers.Keepopticalcon-nectorscleanandmakeapracticeofnotlookingintofiberends.

40 SSMTT-35

41Micro OTDR Module

5 General Information

5.1 Testing and Calibration Statement

Sunrise Telecom certifies that this product was manufactured, tested, and verified according to the applicable Sunrise Telecom Incorporated manufacturing and test procedure(s). These formal procedures are designed to assure that the product meets its required specifications.

This product has no user-adjustable settings. During normal usage, periodic calibration is not a requirement. However, if the product fails during the self-verification test, during power up, the product can be returned to the manufacturer for evaluation and repair.

5.2 Express Limited Warranty

This Sunrise Telecom product is warranted against defects in materialsandworkmanshipduringitswarrantyperiod.Thewar-ranty period for this product is contained in the warranty page on http://www.sunrisetelecom.com.

Sunrise Telecom agrees to repair or replace any assembly or compo nent found to be defective under normal use during this period. The obligation under this warranty is limited solely to re-pairing or replacing the product that proves to be defective within the scope of the warranty when returned to the factory. This war-ranty does not apply under certain conditions, as set forth on the warranty page on http:/ www.sunrisetelecom.com. Please refer to the website for specific details.

THIS IS A LIMITED WARRANTY AND THE ONLY WARRANTY MADE BY SUNRISE TELECOM. SUNRISE TELECOM MAKES NO OTHER WARRANTY, REPRESENTATION OR CONDITION, EXPRESS OR IMPLIED, AND EXPRESSLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY RIGHTS.

42 SSMTT-35

43Micro OTDR Module

Index

CCalibration;15CalibrationStatement;41Configuration Screens

1.RECALLorCURRENT;10

2.RECALLorNONE;10

AVERAGE;9BACKSCATTERCOEFF;10DISPLAYGRID;11DISTANCE;9DISTANCEUNIT;9LOSS;10MODE

AUTOorMANUAL;8PULSEWIDTH;9REFRACTIVEINDEX;10WAVELENGTH;9

FFigures

01SSMTT-35ConnectorPanels;502ModuleMenuTrees;703MainMenuScreen;804ConfigurationScreens;805MeasurementScreens;1206MeasurementZoomScreens;1307MeasurementScreenwithMarkers;14084PointLeastSquaresAnalysisDetail;1409SAVEOptionScreenwithENTRYScreen;1510LightSourceSetupScreen;1611OpticalPowerMeterandThresholdScreens;1712VisualFaultLocatorSetupScreen;1913View/Store/PrintScreen;2014FilenameCharacterEntryScreen;2215MenuShortcutBar;2316OTDRMainScreen;2417ZoomToolbar;2518ModeToolbar;2519RefractiveIndexWindow;2620TraceInfoTabs;2721EventTable-EventTab;2822EventMoveWindow;29

44 SSMTT-35

23EventTable-SectionTab;2924CompareToolbar;3025MarkersToolbars;3126BackscatterCoefficientWindow;3227ThresholdsWindow;3228PreferencesTabs;3329ColorsSetupWindow;3430AboutWindow;3431OpticalConnectorsandAdapters;3732Cross-SectionalViewofConnectors;38

HHandlingofOpticalFiber;37

LLEDs

Module;5TestSet;5

Light Source Setup ScreenAUTOSHUT-OFF;16MODULATION FREQ

CWor;16WAVELENGTH

1310or1550;16

MMeasurementScreens;12MMCCard;15

OOptical Fiber

Cleaning;39Connectors;38EyeSafety;39Handlingof;37

Optical Power Meter ScreenMAX/MIN;17MEASUREMENT MODE

BASICor;17REFERENCE;18THRESHOLD;17UNIT

dBm,µW,ordBR;18WAVELENGTH

850,1310,1550,or1625;17

45Micro OTDR Module

RR-Viewer

2PointAttenuation;25About;34AutomaticTraceAnalysis;30BackscatterCoefficient;32Colors;34CompareToolBar;30DeleteMarksBetweentheMarkers;27Filter;30InsertMarks;27LSIAttenuation;26MarkersToolbar;31ORL;26Preferences;32Reflectance;26RefractiveIndexChange;26SpliceLossMeasurement;26TableofMarks,EventTable;28Thresholds;32TraceInfo;26ZoomToolbar;25

R-Viewer(SSMTT-35PC);23

TThreshold Screen

MAXPOWER,MINPOWERandTOLERANCE;18MODE

LEDorLED.TXT;17

VView/Store/Print Screen

DeletingaStoredTest;21Locking&UnlockingaStoredTest;21PrintingaStoredTest;21RenamingaStoredTest;22SavingaTest;21ViewingaStoredTest;21

Visual Fault Locator Setup ScreenMODULATION FREQ

CWor2Hz;19

WWarnings;2Warranty;41

46 SSMTT-35