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DVP322 User Manual

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1. AC DC adapter input AC90 240V 10 outputDC12V 0 C 40 20 battery EET Comparative humidity dimensions mm 200 126 62mm back 1 5 Power Source Use the following power gt AC adapter charger connected to a standard power socket gt Rechargeable lithium battery the battery supply power automatically when it disconnects the AC adapter charger gt Charge the battery automatically when it connects the AC adapter charger gt Lithium battery pack The fully chargeable battery can work for more than eight hours under normal circumstances Notes Be aware of using random charger of the instrument may cause damage to the battery pack 1 6 Precautions 1 1 In any case be aware of making the fiber optic connector or the end of fiber attached to the OTDR or VFL unit face the operator or other person s eyes Otherwise this damages the vision of the irradiated person even blindness 2 Apply clean connector to connect OTDR Prohibit strictly that the fiber connector with grease plugs connects with the instrument directly Otherwise the instrument loses efficacy 3 Donot under any circumstance allow the optical interface with the optical signal fiber connect the OTDR working otherwise the serious precious devices may be damaged to cause instrument failure so that the instrument has to return to the factory for repair 4 The OTDR is engineering instrument When used the dirt might
2. back 46 4 2 3 Date Format system Setup E i SG Fi CS soal ss iw etur watano Ub i tals 182 163077 023 RESULT Real time ri Ve Auto back 47 4 2 4 Date system Setup F Outdoor Mose 24 Dale g Bile 2A Gere Real time tr Ve Auto RESULT back 48 4 2 5 Time system Setup Large n Long ow Here Siye fate Formal MADONY Dal Tan Ame Naa 0105 2012 CE atip f APF F 1 aw 1 19400073 soo anai a item RESULT Real time tr Ve Auto back 49 4 2 6 Atuo Shut Down system Setup wauborey Dal N abo Shu Cow mos AAO x rtur n arem F 1 4 192 168 077 023 emma tb 5 ow e 1 RESULT Real time ri Ve Auto back 50 4 2 7 IP Setup system Setup af gn ID Tare 5 z de Fima 5 Outdoor Mose MN DOVYY wie M Ao Sh TS ERA mani IP Accipe Sure Mec Gateway Real time tr Ve Auto RESULT back 51 4 2 8 Distance Unit b Outdoor Mose wis a E X TER VENENUM 132 163 077 053 te e T O vie Real time ri A Ve Auto RESULT back 52 4 2 9 Factory Reset System Setup aT WG IS ut Dow 90010 prt 132 168 077 046 mme L J RESULT Real time tr A th Auto back 53 4 3 1 Threshold Setup Threshold Setup 03 25 Select Custom Setup Not Apply RESULT Threshold setup can be done in two ways which are manual setting and
3. be into the optical interface resulting in a poor connection and affecting the instrument to use so that the instrument has to return to the factory for repair 1 6 Precautions 2 The method of usage To avoid this situation that a bad connection is caused by the dirt into the optical interface the correct way to use clean the jumper especially the end face with anhydrous alcohol before inserting a fiber optic connectors jumper every time Then connect with the instrument until the alcohol has been evaporated you should cap it with the dust cover immediately to prevent dust or other dirt adhering to the the OTDR fiber output port after testing The OTDR is equipped with high power semiconductor laser the output power of fiber is enough high to damage people s eyes we should pay special attention to it when used The correct way to use is that the dust cover of the instrument optical interface can not be removed unless the unit is turned off The instrument can be used after the measurement pigtail is Installed The instrument should be closed after finishing the measuring then screw the dust cover instead of the pigtail spin immediately 1 7 Preparation 1 Make sure that the type of fiber connector is consistent with the instrumentjs optical connector The OTDR is equipped with FC PC fiber optic connectors jumper so the customer should prepare the matching measurement pigtail or adapter for the test in advan
4. downward sloping trace This type of events is usually caused by welding points macro or micro bend on the fiber 4 Ifthe threshold value has been set up when the loss of the event exceeds the threshold value the value will be displayed in the event list 3 3 Gain Event Gain Event 4 This type of events points to a welding point with obvious gain This is caused by having different backscatter characteristic at the welding point where the two fibers are connected 4 Event list gives the loss for this event but this value does not represent the actual loss for this point 4 The actual loss for this point can be obtained by performing bidirectional fiber measurement and analysis back 25 3 4 Reflection Event Reflection Event NM 4 The peaks on the trace represent the reflection events which are caused by the interruption in refraction index Reflection events cause the majority of energy emitted onto the fiber to be reflected back to the light source 4 When a reflection event has occurred it indicates that there might be connector or mechanical connection at the point Or it might even have a bad welding point or crack 26 3 5 Fiber End Fiber End 4 This symbol indicates that there is no continuous fiber after the event point 4 The location of the event point indicates the total length of entire fiber back 21 3 6 Continuous Fiber Continuous Fiber 4 This s
5. measured trace no trace Es 1630 Cause 1 Connection is not good connector is not aligned correctly 3 positioning bolt is not aligned correctly eee Solution D reconnect 2 replace with the new connector back 62 5 3 Measurement Alarm Glare Injection Question Cause Solution cignal detected on fiber Please avoid any external light injection and check A LE ssa rem WWW KN UU UD Connection T Event Edit coo TR SO ar 7 There is glare injection alarm after start of the measurement or in the measurement process exist the light signal in the fiber optic lines stop measuring start measuring after Closing the optical signal in the line The device will automatically record every glare alarm Once damaged because of this the equipment is without the warranty back 63 5 4 Measurement Alarm Strong Reflection Cursor L Zaam Connection problem detected Continue Press Enter key to continue direction key to choose Shift Table d Connection Good i Wg Event Edit Question Generate connecting alarm after start of the measurement Causes Exist seriously bad connection in the equipment ports or connector Solution Stop measuring check for damage eccentric smudges all connectors between the equipment and the patch panel if the connecting alarm is generated repeatedly please contact maintenance personnel Depot for R
6. properly and meet all the applicable standards all related costs will be charged to the user 5 8 Contact us Nanjing DVP Optical amp Electronical Tech Co Ltd Address 4 5 F Block B Building No 2 R amp D Zone No 1 Xu zhuang Software Park Xuanwu Ave No 699 8 Nanjing China 210042 Tel 86 25 8558 2828 Fax 86 25 8558 2345 Email dvo njdvp com cn htto www dvp cn
7. the upper orange highlighted tab back 3 4 1 3 Distance Range RESULT Note The user should set distance properly according to actual length of fiber or the length obtained from auto test mode before the measurement Setting up the distance too longer will cause extra long acquisition time and setting up the distance too short may cause the testing to fail maga o back 38 4 1 4 Pulse Wiath Test Setup je 01 47 Wavelength Note Pulse width is width of high power optical signal emitted onto the measured fiber The wider pulse width is the longer distance the OTDR can measure but wider pulse width will cause the dead zone to be larger too Therefore the choice of pulse width is related to distance of measured fiber Wider pulse is needed to measure longer This OTDR idth wi Kamu distance This O can set up its pulse width with test distance back 39 4 1 5 Acq Time Test Setup i 02 27 RESULT Tip Acquisition time will improve the signaljs signal to noise ratio and generate more accurate measurement result User should choose a reasonable acquisition time Acquisition time is proportional to measurement dynamic back back CC 40 4 1 6 Resolution RESULT Note Resolution here is indicated as OTDR sampling resolution It is the shortest distance between two sampling points and it is used to determine the locating ability of OTDR Again sampling resolution is affecte
8. 12 Menu Option RESULT The user can view much information about instrument such as system version user manual work time Contact us battery voltage and also use the instrument auto correction function distance correction function system upgrades the red light switch calibrate the touch screen and so on The function of the coefficient correction of measurement distance Is only available to designated users back 34 3 13 Automatic Correction RESULT If the customer realizes that it presences a relatively large deviation of the between current measurement results and the previous measurement result a period of time the user can correct the deviation through the function of jAutomatic Correction Correcting the internal measurement parameters can improve the dynamic performance and normalize the curve back 35 4 1 1 Test Mode RESULT Description In the test setup interface The current selected tab will be displayed in orange highlighted box in the test setup interface the tabs which appear dimmed are not modified in the automatic mode Press the wheel select the tab and detailed information on this tab will be displayed below Rotate spin wheel to select the parameters and press the ESC key to ____ end tab settings back 36 4 1 2 Wavelength RESULT Note The user can set the two wavelengths which are 1310nm and 1550nm The current selected measurement wavelength will be displayed in
9. All OTDR has measurement dead zone if the user is concerned in the near end dead zone you can to add the optical fiber with known length to jeliminate the dead zone Additional fiber length is determined based on the userjs experience When evaluating the test result the user should avoid this section of fiber 2 1 On Off SETUP RESULT After pressing the on off button once the on off indicator light turn red and the instrument starts booting When pressing the on off button again a dialog box about power off reminder will appear Choose joff to power off or jcancelj to maintain power on state 2 2 Automatic Measurement RESULT Description The test parameters will be configured automatically according to test environment Press TAB key to switch measurement results of different wavelength after the measurement While measurement is in process pressing the AUTO button will terminate the process 2 3 Manual Measurement RESULT Description While measurement is in process pressing the Test button will terminate the process 2 4 Save the Measurement RESULT Description Press the File button slightly enter the file interface Save path can be selected in folder list of the left side of the interface Turn the wheel to select the folder press it to choose the folder this folder contains files will be displayed in the middle of the file interface Press the F1 key to store and enter into the fi
10. DVP322 User Manual 0 8 0 09 Click to view DVP322 User Manual 9609979 Click to view DVP322 User Manual 0 8 0 09 Click to view DVP322 User Manual 0 8 0 09 Click to view DVP322 User Manual 9609979 Click to view DVP322 User Manual 0 8 0 09 Click to view DVP322 User Manual 0 8 0 09 Click to view 1 1 Introduction RESULT DVP322 optical time domain reflection is a dexterous Stable durable optimized OTDR for broadcast and TV network engineering installation of telecommunication network and maintenance testing 1 2 Main Features shock moisture Suitable for field operation Replaceable lithium battery Work more than 8 hours Standard VFL red light source back 1 3 Key Introduction iF1 F2 F3 FA F5 five keys are respectively correspond to the function of the left marked on the screen Power button turns the unit On and Off back 10 1 4 Specifications Technical Specifications distance range km 5m 160km pulse duration ns User defined Intelligent associated with real time Measurement time measurement function 1310nm 20nm 1550nmj 20nm event dead zone 2m attenuation dead zone 15m General Specifications LCD type 4 3 inch TFT 480 272 dot matrix 16 9 fiber adapter FC PC SC PC option USB RJ45 Rechargeable Li Ion Battery Inside Charging Time 4hours Working Time 8hours
11. ce Typically testers may face the following conditions 1 The measured fiber has been installed The measured side has been installed on the rack through some type of connector the user should select FC PC XX XX type jumper to connect FC PC side connectes to the OTDR XX XX is adapter type of the measured fiber terminal on the rack such as FC PC FC APC SC PC SC APC Therefore to determine the type of connection jumper before the first use of the OTDR 2 The measured fiber is bare fiber The user should use a bare fiber adapter of FC PC type or own weld a section of jumper Ensure that the type of measurement jumper is consistent with instrument otherwise the measurement will lose measurement accuracy back 1 7 Preparation 2 Make sure the fiber end face is clean Cleaning Method We recommend that the user prepare isopropyl alcohol cotton wool or fiber cleaner for cleaning If unclean fiber connector has been used the light solution can enhance Fresnel reflection in the fiber end face to exceed the instrument bearing range causing signal saturation and effecting dead zone index The heavy solution can make pollutant attach to the light of the OTDR interface causing instrument failure The anhydrous alcohol cotton with cleaning is one off avoid the secondary pollution wipe the special dirty fiber connector many times The user are suggested to apply additional optical fiber to reduce the dead zone
12. d by the selection of pulse width and test distance back 41 4 1 7 Index Test Setup x 03 54 ode avelenc E Tip Users can choose refraction index from 1 30000 to 1 70000 Changing refraction index will change the test result The test result will decrease when the refraction index increases Refraction index is provided by the optical or cable manufacturers It is suggested that users use group 4 refraction index of a length known fiber and remember it back 42 4 1 8 Loss Algorithm RESULT back 43 4 1 9 Scatter Coefficient RESULT Description Scattering coefficient is usually obtained from the optical cable manufacturers Changing scattering coefficient will lead to change in event loss and reflectance The value of the scattering coefficient is also be filled in with the numeric keypad The user can press jNumpadj F4 to open the numeric keypad after selecting the number of bits turns blue l back 4 4 2 1 Language system Setup 14 00 Engish Cutooor Most u OG i M lo fa Care me 182 165077 023 t Engish e v6 4T O Fradtaice e Espaitol SETUP RESULT Real time h Ve Auto back 45 4 2 2 Interface Style s 03 40 ENTER eram CTT TT E Dutanor Mod aa 4 EK i a T 20100 LAN Ya2 169 07 7 046 Outdocr Mock O rov Mode 1 O rox Mode mor Mode 3 I Gi Real time tr Ve Auto SETUP RESULT
13. default setting Manual setting allows the user to customize Splice Threshold Reflectance Threshold Slop Threshold and Fiber End Threshold Default setting will set up all four parameters into factory default values and cannot be changed by the user back 04 4 3 2 Distance Offset RESULT When Distance Offset is enabled Offset value and Negative event can be set Otherwise these two parameters cannot be changed back 55 4 3 3 Splice Threshold Threshold Setup RESULT Splice Threshold can be set as Auto setting and Manual setting The range of setting is from 0 01 to 5 99dB Also Splice Threshold must be set as Enable or it will not be functional back 56 4 3 4 Reflectance Threshold RESULT Reflectance threshold can be set as Auto setting and Manual setting Setup range is from 99 to 11dB Also Reflectance Threshold must be set as Enable or itis not as a reference of the event display If want to display all events please be sure that all threshold items are selected in Setup interface back 5 7 4 3 5 Fiber End Threshold RESULT Fiber end threshold can be set as Auto setting and Manual setting Setup range is from 3 to 15 dB back 58 4 3 6 Save Custom Setup RESULT When the user check any one of the custom setting files and hit OK system will save all current settings including Test Setup System Setup and Threshold Setup into this custom setting file I
14. epair if necessary back 64 5 5 Test Setup Problems Question 1 Causes Solution Question 2 Causes Solution Question 3 Causes Solution Question 4 Causes Solution The trace is too short and testing time is too long The distance range set up is too long Reset the distance range according to the actual length of fiber or the length measured obtained from auto measurement mode Trace is incomplete or measurement failed The distance set up is too short Reset distance longer than or equal to the actual length of fiber or select auto measurement mode instead Measured events are incomplete Pulse width is too large DSelect smaller pulse width increase test time Trace noise is too large Pulse width is too small or the measurement time is not enough Dincrease the test time increase the pulse width appropriately set smoothing function to high level 5 6 Warranty And Disclaimer General information DVP322 this product is unconditionally warranted to be free of defects for a period of one 1 year from the date of delivery but not including the following 1 This warranty does not apply to expendable parts such as batteries optical interface adapter The laser within machine APD are warranted for a period of one year from the date of shipment 3 The customer replace the optical connector of damage caused by the use of improper or harmful cleaning the customer are cha
15. le storage interface Fill in the file information then press the F1 key to save the file back 20 2 5 Fill in Information of the File Turn the wheel to Foe Nite re ve time RESULT Tip Press F2 file name and F3 file information to switch between file name of the left side of the interface and file Information of the right side of the file s interface After filling in information of the file press jF1 to save the file 21 2 6 Send to USB RESULT Description Press the File key slightly then press F3 to open the collapse folders Rotating wheel Browses folder then turn the rotary wheel to select the file storage path Afterwards press the TAB key to enter the folder Rotating wheel selects the file and press it to confirm Press F2 to copy the file finally press F4 send to U disk back 22 3 1 Trace Operation ime MENU F SETUP RESULT Trace and event list will be displayed after measurement is completed The events which are detailed in event list are noted by numbers along the displayed trace When there is an event on the trace and the wheel is pressed the corresponding cursor will switch to the event and display the parameters of this event back 23 3 2 Attenuation Event Attenuation Event EEE 4 This type of events is characterized by the sudden signal level reduction in the Rayleigh backscattered signal They are the discontinuous points on the
16. n order to reload conveniently these parameters when some settings be altered back 99 4 3 7 Select Custom Setup Threshold Setup Recover certain custom setting and apply it for further operation back 60 5 1 Instrument Problems Problem A blank screen or fail to boot gt Cause 1 battery has no or low power solution charge the battery with AC adapter charger provided gt Cause 2 improper use of charger Solution confirm that the charger output is 12 0V 1 2A gt Cause 3 damaged battery Solution replace the battery gt Cause 4 hardware faults solution depot for repair Tip The instrument will diagnose automatically the connection status in the measurement and display that the connection status is good or bad If there is light signal in the measured line the instrument will alarm automatically If the customer realizes that it presences a relatively large deviation of the between current measurement results and the previous measurement result the user can use the function of automatic correction to correct it 5 2 Connection Problems Question 1 Improper fiber connections cause error in measured trace j less dynamic Result Cause improper jumper interface is used connector is dirty 3 connector is worn out Solution 1 replace with the correct jumpers clean the connector 3 replace with the connector Question 2 Improper fiber connections cause error in
17. rged for the replacement Disclaimer 1 Any faults are caused by wrong operation due to the user does not comply with the Statute of this manual Example that the damage of APD and its subsidiary circuit is caused by improperly measuring the optical fiber with the light signal The warranty label have been removed any faults are caused by unauthorized repair or modification Any faults are caused by external mechanical force immersion burning hot severe cold flames The other devices have engendered any damage or failure of performance because of connecting to the product OTDR back 66 5 Service And Repair send the equipment for the technical service or maintenance 1 Please contact the customer service center technicians will determine whether your instrument is detected repair or calibration If possible please backup your data before sending the instrument for repair Please try to package the instrument with the original package materials Be sure to include an introduction or report about failure and the phenomenon in detail Please pay for returning the instrument as the address provided by the service personnel The instrument will be returned with a repair report after repair If the instrument is under warranty we will pay the return freight If the instrument is no longer under warranty you will be responsible for the cost listed on the repair report Note If the returned equipment is found to be working
18. ymbol indicates that the fiber optic area has not event 4 The sum of the of length the continuous fibers in the entire optical fiber is equal to the total length of fiber detected 4 Event table gives the loss value of the continuous fiber but not reflectance back 28 3 Create Folder Please refer to the use of the keypad Real Paba Dias bei rut ams Ir GE Auto RESULT back 29 3 8 Edit Folder RAM 66 4MO27 OM RESULT Description Rotating wheel selects the directory that you want to copy or cut a folder press the F2 key the directory is copied or cut to the target directory back 3 9 Edit File Wavelength 1550nm Pulse Wilh SOes Range Jem index 46700 RESULT Description If the user copy or cut the file press F2 jcopyj or jcutj operating area will automatically be switched to the left catalogue area press F2 paste key after selecting the target directory the file will be pasted in this directory and showed in the list of files on the right at the same time back ST 3 10 Save the File Save File File Name RESULT Real time Vi Auto back 32 3 11 The Keypad Save File RESULT Tip rotary the wheel to input Chinese characters when the user use 4 ifi to spell press F1 key to enter into Chinese characters selection rotary the wheel to scan the Chinese characters press it to confirm back 33 3

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