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- Page 1 MW9077A/A1 OTDR Module Operation Manual 17th Edition For safety and warning information, please read this manual before attempting to use the equipment. Keep this manual with the equipment. ANRITSU CORPORATION Document No.: M-W2254AE-17.0...
- Page 2 Ensure that you clearly understand the meanings of the symbols BEFORE using the equipment. Some or all of the following symbols may be used on all Anritsu equipment. In addition, there may be other labels attached to products that are not shown in the diagrams in this manual.
- Page 3 Calibration ● The performance-guarantee seal verifies the integrity of the equipment. To ensure the continued integrity of the equipment, only Anritsu service personnel, or service personnel of an Anritsu sales representative, should break this seal to repair or calibrate the equipment. Be careful not to break the seal by opening the equipment or unit covers.
- Page 4 For Safety WARNING Falling Over ● This equipment should always be positioned in the correct manner. If the cabinet is turned on its side, etc., it will be unstable and may be damaged if it falls over as a result of receiving a slight mechanical shock.
- Page 5 For Safety Class 1 indicates the danger degree of the laser radiation specified below according to IEC 60825-1: 2007. Class 1: Lasers that are safe under reasonably foreseeable conditions of operation, including the use of optical instruments for intrabeam viewing. Class I indicates the degree of danger of the laser radiation outlined below as defined by 21 CFR 1040.10.
- Page 6 Output Wavelength Divergence Specification Repetition Aperture Power (nm) (deg) (refer to Rate Table 2) 20 × 10 –6 Figure 1, MW9077A 0.10 1310 11.5 0.019 20 × 10 –6 Figure 1 MW9077A1 0.10 1550 11.5 0.019 20 × 10 –6...
- Page 7 For Safety Laser Radiation Markings [Front View] [Top View] Figure 1 Locations of Laser Beam Apertures and Affixed Labels...
- Page 8 Software: Software reported as faulty within a period of 6 months from the date of delivery will be corrected or replaced by Anritsu Corporation at no cost to the user. Following correction or replacement the software will remain under warranty for either the remainder of 6 months from the date of initial delivery, or for a period of 30 days, whichever is shorter.
- Page 9 In addition, this warranty is valid only for the original equipment purchaser. It is not transferable if the equipment is resold. Anritsu Corporation shall assume no liability for damage or financial loss of the customer due to the use of or a failure to use this equipment, unless the damage or loss is caused due to Anritsu Corporation’s intentional or gross...
- Page 10 Notes On Export Management This product and its manuals may require an Export License/Approval by the Government of the product's country of origin for re-export from your country. Before re-exporting the product or manuals, please contact us to confirm whether they are export-controlled items or not. When you dispose of export-controlled items, the products/manuals need to be broken/shredded so as not to be unlawfully used for military purpose.
- Page 11 2012/19/EU (the “WEEE Directive”) in European Union. For Products placed on the EU market after August 13, 2005, please contact your local Anritsu representative at the end of the product's useful life to arrange disposal in accordance with your initial contract and the local law.
- Page 12 Cautions Against Computer Virus Infection ● Copying files and data Only files that have been provided directly from Anritsu or generated using Anritsu equipment should be copied to the instrument. All other required files should be transferred by means of USB flash drive or CompactFlash media after undergoing a thorough virus check.
- Page 13 CE Conformity Marking Anritsu affixes the CE conformity marking on the following product(s) in accordance with the Decision 768/2008/EC to indicate that they conform to the EMC, LVD, and RoHS directive of the European Union (EU). CE marking 1. Product Model...
- Page 14 Directive 2011/65/EU. (Pb,Cd,Cr6+,Hg,PBB,PBDE) Third digit Serial number example 4. Contact Name: Anritsu GmbH Address, city: Nemetschek Haus, Konrad-Zuse-Platz 1 81829 München, Country: Germany Name: ANRITSU EMEA Ltd. Address, city: 200 Capability Green, Luton Bedfordshire, LU1 3LU Country: United Kingdom...
- Page 15 RoHS Compliance The following notices are applicable to China RoHS Requirements only. 1. 产品中有害物质的名称及含量 (The names and contents of the toxic or hazardous substances contained in this product) 有害物质 部件名称 铅 汞 镉 六价铬 多溴联苯 多溴二苯醚 (Pb) (Hg) (Cd) [Cr(Ⅵ)] (PBB) (PBDE) 印刷线路板...
- Page 16 RCM Conformity Marking Anritsu affixes the RCM mark on the following product(s) in accordance with the regulation to indicate that they conform to the EMC framework of Australia/New Zealand. RCM marking 1. Product Model Model: MW9077A OTDR Module MW9077A1 OTDR Module...
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Page 17: About This Manual
About This Manual This operation manual explains the interface for remote control of the MW9077A/A1 OTDR Module using a connected controller such as a controller board. The features of the OTDR Module are described in Chapter 1 “Outline.” Refer to the Chapter 3 “Interface” and Chapter 4 “Commands” for information on the type of interface and commands to be used for connecting this equipment. -
Page 18: Table Of Contents
Table of Contents For Safety .............. iii About This Manual..........I Chapter 1 Outline ..........1-1 Overview of MW9077A/A1 OTDR Module ....1-2 Features ................ 1-3 Loss, Splice, Return Loss and Total Return Loss Measurements .............. 1-4 Linear Approximation Methods LSA/2PA ..... 1-6 Chapter 2 Before Use ........ - Page 19 Chapter 6 Performance Test and Calibration .. 6-1 Performance Test ............6-2 Calibration ..............6-11 Performance Test Result Record Form ...... 6-12 Chapter 7 Maintenance ........7-1 Optical Connector & Optical Adapter Cleaning .... 7-2 Suggestions for Storage ..........7-4 Method of Transportation ..........
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Page 21: Chapter 1 Outline
Chapter 1 Outline This section explains the features of the MW9077A/A1 OTDR (Optical Time Domain Reflectometer) Module and the measurement principle. For the performance and function specifications, refer to Appendix A “Specifications.” Overview of MW9077A/A1 OTDR Module ....1-2 1.1.1 Measuring cable loss and distance ....1-2 Features ................ -
Page 22: Overview Of Mw9077A/A1 Otdr Module
Chapter 1 Outline 1.1 Overview of MW9077A/A1 OTDR Module The MW9077A/A1 OTDR Module can be used as an OTDR for supporting measurements at various wavelengths by combining with a interface board and by sending various types of remote commands. The MW9077A/A1 OTDR Module has been developed for the detection of faults in optical fibers during the maintenance of optical fiber systems. -
Page 23: Features
Features 1.2 Features 1.2.1 Automatic search of faults This function is convenient for use when the user does not know the locations of the faults or the length of the fiber. Set the measurement conditions to Auto (Ex. “Distance range” and “Pulse width”). -
Page 24: Loss, Splice, Return Loss And Total Return Loss Measurements
Chapter 1 Outline 1.3 Loss, Splice, Return Loss and Total Return Loss Measurements (1) Loss measurement Using the remote command LOS2?, the loss between X1 and X2 location can be measured. × (2) Splice and return loss measurement Using the remote commands EVN2?, SPLICE? and REFLCT?, the loss at a connection can be measured. - Page 25 Loss, Splice, Return Loss and Total Return Loss Measurements (3) Total return loss measurement Using the remote command AUT?, the total return loss from 0 km to the far end of the fiber cable is measured. The backscattered level used as reference is in the location shown in the following figure. The standard backscattered level of Total Return Loss 0 km Refer to “Appendix E”...
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Page 26: Linear Approximation Methods Lsa/2Pa
Chapter 1 Outline 1.4 Linear Approximation Methods LSA/2PA In the measurement, the loss is calculated by drawing an imaginary line between the two set markers. There are two methods for drawing the line. LSA (Least Square Approximation) Method In this method, the line is drawn by computing the least square of the distances from all the measured data between the two markers. - Page 27 Linear Approximation Methods LSA/2PA When 2PA is selected There is a probability of the occurrence of a large error when the noise is large. An example is shown below. Mis-measurement Correct measurement...
- Page 28 Chapter 1 Outline 1-8.
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Page 29: Chapter 2 Before Use
Chapter 2 Before Use This section provides information that should be thoroughly understood before actually using the OTDR Module. In particular, it explains about the dimensional requirement for controller board. Refer to Section 3 “Interface” for setup parameters about the RS-232C and the Ethernet connections. -
Page 30: Equipment Composition
M-W2254AE 2.1.2 Options The following optional parts can be selected for the OTDR Module. Note that all the options need to be installed in an Anritsu factory. For the specifications, refer to Appendix A “Specifications.” 1550 nm filter (MW9077A-01) This option adds the function of preventing 1500 to 1625 nm optical signals from entering into the OTDR Module. -
Page 31: Names Of Parts
Optical connector Screw hole Optical connector OTDR input/output optical connector Maintenance port Connector for maintenance. It is only for Anritsu’s engineer. Status display LED Power Illuminates when power is supplied to the OTDR Module. Illuminates when LD is emitting light. - Page 32 Chapter 2 Before Use LINK/ACT Illuminates when the OTDR Module is operated by Ethernet control. Link: LED is lighting. ACT: LED is blinking. Interface connector Connector to link-up with a controller board. Refer to 2.3 “Installing the OTDR Module” for a pin assignment.
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Page 33: Installing The Otdr Module
Installing the OTDR Module 2.3 Installing the OTDR Module This section explains the requirements and setup to install the OTDR Module on the controller board. 2.3.1 Mechanical dimensions The figure below shows the model with option 33 (LC) connector. Figure 2.3.1-1 OTDR Module 22.86 ±0.1 2.54 ±0.08 ϕ... -
Page 34: Pin Assignment
Chapter 2 Before Use 2.3.2 Pin assignment Table 2.3.2-1 Interface connector pin assignment Sign Description Sign Description 1.5 A 1.5 A Tolerance: ±1 V Tolerance: ±1 V Chassis and four mounting holes are connected to GND. TPIP Ethernet TPIN Ethernet RS-232C RS-232C TTL level... -
Page 35: Connecting The Optical Fiber Cable
Connecting the Optical Fiber Cable 2.4 Connecting the Optical Fiber Cable Connect the optical fiber cable as shown in the figure below. The figure below shows the model with option 37 (FC) connector. WARNING NEVER look into the cable connecting end of the optical connector of the OTDR or the end of the cable connected to the OTDR. -
Page 36: Replacing The Optical Connector
This section describes only for the OTDR Module with the user-replacable connector type. To replace the optical connector, pull the adapter lever towards you until the latch is released. Then, remove the connector by lifting it. Connector types are shown below for reference. interior of the MW9077A/A1 HMS-10/A... - Page 37 Replacing the Optical Connector CAUTION When replacing the optical connector, take care not to damage the connector and the connecting surface of the connector. WARNING NEVER look directory into the laser radiation emitted from the OUTPUT connector or the end of the cable connected to the OTDR.
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Page 38: Precautions
Chapter 2 Before Use 2.6 Precautions Disconnect from communication equipments The OTDR Module outputs high-power optical pulses. Disconnect the communication equipments from the optical fibers before a measurement, or the optical sensor of the equipment may be broken. Limit to the interface The OTDR Module provides two interfaces such as RS-232C (serial) and Ethernet. -
Page 39: Chapter 3 Interface
Chapter 3 Interface This section explains the RS-232C and Ethernet interfaces of OTDR Module (hereafter “OTDR”), and the transmission sequence between an external PC (controller) and the OTDR. RS-232C ............... 3-2 3.1.1 Port configuration ..........3-2 Ethernet ................ 3-2 3.2.1 Port configuration ..........3-2 Data Format .............. -
Page 40: Rs-232C
Chapter 3 Interface 3.1 RS-232C 3.1.1 Port configuration Table 3.1.1-1 Port specification of RS-232C Parameter Value Baud rate 115200 Data length 8 (bits) Parity None Stop bit 1 (bit) Flow control Hardware flow 3.2 Ethernet 3.2.1 Port configuration Table 3.2.1-1 Port specification of Ethernet Port Characteristics Ethernet... -
Page 41: Data Format
Data Format 3.3 Data Format 3.3.1 Text data All text messages such as Command, Query, and Response messages have a terminator code in the last two bytes. The terminator code is 0x0D0A. Text message Terminato (ex. “LD 1”, “ANS0”) 0x0D0A Figure 3.3.1-1 Text data format 3.3.2 Binary data Binary data do not have a terminator code. -
Page 42: Transmission Sequence
Chapter 3 Interface 3.4 Transmission Sequence 3.4.1 Command If the sending command is received by OTDR successfully, a response message “ANS0” is sent from OTDR. However, OTDR does not send any response message when OTDR receives “RST” command. OTDR (Controller) Command except “RST”... -
Page 43: Query
Transmission Sequence 3.4.2 Query If the sending query command is received by OTDR successfully, the response message described in Section 4.2.2 is sent from OTDR. 4.2.2 Commands OTDR (Controller) Query Command (ex. “APR?”) Command is received and executed successfully. Response (ex. “APR 1”) Figure 3.4.2-1 Query sequence (Normal) 3.4.3 Error sequence The “ANS*”... - Page 44 Chapter 3 Interface 3-6.
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Page 45: Chapter 4 Commands
Chapter 4 Commands This section explains the command usage of the MW9077A/A1 OTDR Module (hereafter “OTDR”). Command Type ............4-3 Command Details ............4-6 4.2.1 Notations ............4-6 4.2.2 Commands ............. 4-10 ALA ..............4-11 APR ..............4-13 ATA ..............4-14 ATT .............. - Page 46 Chapter 4 Commands THS..............4-59 TLOS? ............4-60 WAV? ............. 4-61 WLS ..............4-62...
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Page 47: Command Type
Command Type 4.1 Command Type The remote commands are classified as follows. Table 4.1-1 Measurement operation Comman Function Query Start sweep (measurement) Table 4.1-2 Measurement settings Comman Function Query Wavelength WLS? Average limit ALA? Averaging mode AVG? Measurement parameters (Distance range, pulse width,... - Page 48 Anritsu’s commands require these Anritsu original parameters. If the SR-4731 data do not contain the Anritsu original parameters, Anritsu’s commands can not handle the data. If the SR-4731 data including Anritsu original parameters are modified by user (ex.: edited by binary editor or another system), Anritsu commands can not support the data any more.
- Page 49 Command Type Table 4.1-6 Status readout Comman Function Query Status ⎯ STATUS? Error code ERR? ⎯ Waveform data existence ⎯ WAV? Table 4.1-7 Other settings Comman Function Query Initialize ⎯ Reset ⎯ Selftest SLFTST? ⎯ DLMOD DLMOD Change Mode Download the software DWNLD DWNLD?
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Page 50: Command Details
Chapter 4 Commands 4.2 Command Details This section explains the details of each command in alphabetical order. 4.2.1 Notations This document uses the following notations: A hexadecimal value is preceded by “0x.” ex.: “0x0100” means “256” in decimal. A character “ ” is a space. That is 0x20 in ASCII code. ex.: “A B”... - Page 51 Command Details Command or Query name Start measurement (sweep). Description Command Command LD { 0 | 1 } Stop measurement (sweep) Start measurement (sweep) Query Query Response message Response LD { 0 | 1 } Idling Status Measuring Status Dependency Mode OTDR mode Download mode...
- Page 52 Chapter 4 Commands Table 4.2.1-1 OTDR mode and status Mode Status Description OTDR is measuring. Most query commands except for retrieving result are available. Measurin contrast, most setting commands are not available in this status in order to avoid the OTDR mode incoherence conditions during the measurement.
- Page 53 Command Details Measuring Stops the measurement (“LD 0”), Starts the measurement. (“LD 1”) or finishes the measurement. Idling Figure 4.2.1-3 State transition diagram between status...
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Page 54: Commands
Chapter 4 Commands 4.2.2 Commands 4-10... -
Page 55: Ala
Command Details Description Set averaging limit. Command ALA <Mode>,<Setting> <Mode> Number of times Elapsed time Auto setting <Setting> If Averaging mode is Auto, this variable is ignored. 1 to 9999: times (when Mode is Number of times) 1 to 9999: sec (when Mode is Elapsed time) Query ALA? Response... - Page 56 Chapter 4 Commands Example >ALA 0,1 <ANS0 >ALA? <ALA 0,1,2 >ALA 2,1 <ANS0 >ALA? <ALA 1,***,*** 4-12...
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Page 57: Apr
Command Details Description Set linear approximation method. This setting value is used for “LOS2?” and “SPRICE?” commands. Command APR { 0 | 1 } 2PA (Two Point Approximation) LSA (Least Square linear Approximation) Query APR? Response APR { 0 | 1 } Dependency Mode OTDR mode... -
Page 58: Ata
Chapter 4 Commands Sets the attenuator in auto setting. Description When the pulse width setting is auto, the attenuator setting mode is set in the automatic setting mode. Command Query ATA? Response ATA { 0 | 1 } 0: Manual attenuation mode 1: Automatic attenuation mode Dependency Mode... -
Page 59: Att
Command Details Description Sets attenuation with attenuator. Command ATT <Attenuation> Sets by the number of 3 decimal places in 1=1 dB unit. The set attenuation value can be obtained with the attenuator value selected in the “ AVT? “ command. When the pulse width setting is auto, the attenuation setting mode is also set to the automatic setting mode. -
Page 60: Atv
Chapter 4 Commands ATV? Obtains the valid attenuation value for the specified pulse width. Description Query ATV? <Pulse Width> <Pulse Width> is one of the values that can be set with the OTDR unit, shown in 1= 1ns unit. ex.: The one of the following values is selected. (10, 30, 100, 300, 1000, 3000, 10000, 20000 ns ) Response ATV <Attenuation>{,<Attenuation>}... -
Page 61: Aut
Command Details AUT? Description Read auto-measurement results. Query AUT? Response AUT <Total number of the events>,<Fiber length>,<Total loss>,<Total return loss> <Total number of the events> 0 to 99 <Fiber length> Distance unit, IOR correction distance data. The numeric value in meters is rounded to the three decimal point. “***”... -
Page 62: Ave
Chapter 4 Commands AVE? Read current averaging count and time. Description Query AVE? Response AVE <Averaging mode>,<Count value (Count)>,<Count value (Time)> <Averaging mode> Manual (“Number of times” or “Elapsed time”) Auto setting <Count value (Count)> Current averaging count in the number of times unit <Count value (Time)>... -
Page 63: Avg
Command Details Description Sets the Averaging mode (ON/OFF). When Averaging mode is ON, the value set with the ALA command is valid. Command AVG {0|1} 0: Averaging OFF (Real time trace). 1: Averaging ON. Query AVG? Response AVG {0|1} Dependency Mode OTDR mode Download mode... -
Page 64: Bsl2
Chapter 4 Commands BSL2 Set Backscatter coefficient value. Description Command BSL2 <Backscatter coefficient> <Backscatter coefficient> dB unit. The setting range is –40.00 to –90.00 dB (0.01 dB step) The setting value should be the value at a 1 ns pulse width. It is not necessary to set the value for each pulse width. -
Page 65: Conntm
Command Details CONNTM Description Set time to keep alive Ethernet connection with controller. This setting is effective when there is no response from the TCP connection of the controller. Command CONNTM <Timeout set value> <Timeout set value> The setting range is 1 to 7200 (1sec. step) Query CONNTM? Response... -
Page 66: Dat
Chapter 4 Commands DAT? Read waveform data. Description Query DAT? [<Data start distance>,<Data distance>[,<Read skipping interval>]] <Data start distance> Specify the distance value where the first data to be sent is. The numeric value in meters is rounded to the three decimal point. <Data end distance>... - Page 67 Command Details Dependency Mode OTDR mode Download mode Status Measuring Idling ⎯ Command DAT? √ √ − √: Command is available −: Command is not available Example >DAT? <00011234 (Binary data) 4-23...
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Page 68: Date2
Chapter 4 Commands DATE2 Set local date and time, then assign the time difference from UTC Description (Universal Coordinated Time) to local time. Command DATE2 <Year>,<Month>,<Day>,<Hour>,<Minute>,<Second>,<Time difference> <Year> 2000 to 2098 <Month> 1 to 12 <Day> 1 to 31 <Hour> 0 to 23 <Minute>... - Page 69 Command Details Example >DATE2 2003,3,31,12,34,56,-9 <ANS0 Location:Tokyo Time difference: -9hours Local time: Mar.31,2003 12:34:56 >DATE2? <DATE2 2003,3,31,12,34,58,-9 >DATE2 2003,1,23,1,23,45,-8 <ANS0 Location: Beijing Time difference: -8hours Local time: Jan.23,2003 1:23:45 >DATE2? <DATE2 2003,1,23,1,23,47,-8 >DATE2 2005,11,22,10,20,30,5 <ANS0 Location: New York Time difference: 5hours Local time: Nov.22,2005 10:20:30 >DATE2? <DATE2 2005,11,22,10,20,32,5...
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Page 70: Dlmode
Chapter 4 Commands DLMODE Change the OTDR mode to Download mode for downloading the software. Description The setting is effective after the reset. Command DLMODE { 0 | 1 } OTDR mode Download mode Query DLMODE? Response DLMODE { 0 | 1 } Dependency Mode OTDR mode... -
Page 71: Dwnld
Command Details DWNLD Description Download the software. The downloaded software is effective after the reset. Command DWNLD <Data> <Data> Specify the binary data of the file to be sent. First four-bytes data indicate the file size. ex.: When 256 (0x00000100) byte file data is sent: byte 2 byte 3 byte 4... - Page 72 Chapter 4 Commands >DWNLD 00000001FF (Binary data) <ANS0 >DWNLD? <DWNLD 2 4-28...
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Page 73: Err
Command Details ERR? Description Read Error code of the last Command or Query. Query ERR? Response ERR <Error code> <Error code> No error 1 to 255: Error code (See Table 4.2.2-1 Error list, below.) Dependency Mode OTDR mode Download mode Status Measuring Idling... - Page 74 Chapter 4 Commands Table 4.2.2-1 Error list Type Contents Error code Probability Query does not match measurement ⎯ conditions “GETFILE?”,“AUT Query errors ?”,“DAT?”,“EVN2?”, (Error codes: 1 to 19) Received non-executable query when no “SPLICE?”, waveform “REFLCT?”,“LOS2 ?”,“TLOS?”,“MKDR ?” Received command or query in illegal Command errors All input format...
- Page 75 Command Details Sequence errors Message timeout (Remote command is All input (Error codes: 140 to interrupted over 30 seconds.) 159) File errors “SETFILE”, File type incorrect “DWNLD” (Error codes: 160 to 179) The unit can’t support the file. “SETFILE” Reserved (Error codes: 180 to (Reserved for future use) for future...
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Page 76: Evn2
Chapter 4 Commands EVN2? Read event results. Description Query EVN2? <Event number> Response EVN2 <Event number>,<Location>,<Splice loss>, <Reflectance>,<Total loss>,<Event type> <Event number> Event number 1 to 99 <Location> Event location m (meter) unit The numeric value in meters is rounded to the three decimal point. <Splice loss>... - Page 77 Command Details Dependency Mode OTDR mode Download mode Status Measuring Idling ⎯ Command EVN2? − √ − √: Command is available −: Command is not available Example >EVN2? 1 <EVN2 1,1009.11,END, -18.714,0.227,E 4-33...
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Page 78: Getfile
Chapter 4 Commands GETFILE? Get SR-4731 data from OTDR. Description Query GETFILE? Response <Data> <Data> Binary data of the file specified to be received. First four bytes data indicate the file size. ex.: When 56000 (0x0000DAC0) byte file data is received: byte 2 byte 3 byte 4... -
Page 79: Hdfg
Command Details HDFG Description Input the data flag of the header. This value is corresponded to CDF (Current Data Flag) in SR-4731. Command HDFG { 0 | 1 | 2 } BC (Installation) RC (Repair) OT (Other) Query HDFG? Response HDFG { 0 | 1 | 2 } Dependency Mode... -
Page 80: Ini
Chapter 4 Commands Description Recall the parameter information, and set OTDR condition to the power-on. The network parameters (ie. IP, port, netmask and gateway) are not initialized. Command Dependency Mode OTDR mode Download mode Status Measuring Idling ⎯ Command √ √... -
Page 81: Ior
Command Details Description Set IOR (Index of Refraction) limit. Command IOR <IOR value> <IOR value> Valid up to six decimal places from 1.400000 to 1.699999 Query IOR? Response IOR <IOR value> Dependency Mode OTDR mode Download mode Status Measuring Idling ⎯... - Page 82 Chapter 4 Commands Start measurement (sweep). Description Command LD { 0 | 1 } Stop measurement (sweep) Start measurement (sweep) Query Response LD { 0 | 1 } Idling Status Measuring Status Dependency Mode OTDR mode Download mode Status Measuring Idling ⎯...
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Page 83: Los2
Command Details LOS2? Description Calculate the loss between X1 and X2. Query LOS2? <X1 location>,<X2 location> <X1 location> m (meter) unit Location of the X1 marker. This value is rounded off to the sampling location internally. <X2 location> m (meter) unit Location of the X2 marker. -
Page 84: Minf
MAC address ex.: “00-00-91-12-34-56” <Software version> Software version ex.: “1.0” Dependency Mode OTDR mode Download mode Status Measuring Idling ⎯ Command MINF? √ √ − √: Command is available −: Command is not available Example >MINF? <MINF Anritsu,MW9077A,41(dB)1310(nm),SN6200000001, 00-00-91-00-00-01,1.0 4-40... -
Page 85: Mkdr
Command Details MKDR? Description Read the point position of start and end that are for calculating the loss. Query MKDR? Response MKDR <Start point position>,<End point position> <Start point position> 0 to 5000, 6250, 20000 or 25000 “***” is output if measurement is impossible. <End point position>... -
Page 86: Net
Chapter 4 Commands Set network parameters. The setting parameters are effective after the Description reset. Command NET <IP address>,<Port number>,<Netmask>,<Gateway> <IP address> 0.0.0.0 to 255.255.255.255 (except 0.0.0.0 and 255.255.255.255) <Port number> 1024 to 65535 <Netmask> 0.0.0.0 to 255.255.255.255 (except 0.0.0.0 and 255.255.255.255) <Gateway>... -
Page 87: Ofs
Command Details Description Set the relative distance. This value is corresponded to UOD (User Offset Distance) in SR-4731. Command OFS <Relative distance> <Relative distance> Relative distance This value is rounded off to the third decimal point in m (meter) unit. Query OFS? Response... -
Page 88: Reflct
Chapter 4 Commands REFLCT? Calculate the reflectance. Description Query REFLCT? <Event location>,<Peak location> <Event location> m (meter) unit Event location is corresponded to EPT (Event Propagation Time) in SR-4731. This value is rounded off to the sampling location internally. <Peak location> m (meter) unit Location of the Peak marker. - Page 89 Command Details Dependency Mode OTDR mode Download mode Status Measuring Idling ⎯ Command REFLCT? √ √ − √: Command is available −: Command is not available Example >REFLCT? 800.05,849.95 <REFLCT 800.00,850.00,-19.585 Sampling resolution: 1.00 (m) 4-45...
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Page 90: Rst
Chapter 4 Commands Hardware reset (restart) of the OTDR Module. After the reset, OTDR Description Module does not send “ANS0” message. TCP/IP connection is dis-connected, if TCP/IP port is in use. After rebooting (it takes more than 15 seconds), re-connection is required for TCP/IP port. -
Page 91: Setfile
Command Details SETFILE Description Set SR-4731 data to OTDR. The waveform and setting parameters in the SR-4731 data are set to the OTDR. Command SETFILE <Data> <Data> Binary data of the file specified to be sent. First four-byte data indicate the file size. The maximum data size accepted by OTDR is 200 KBytes. -
Page 92: Slftst
Chapter 4 Commands SLFTST? Get the selftest results. Description The OTDR always checks itself. If the OTDR detects any troubles in itself, the OTDR notifies it by sending the error message “Ans 255” to the response of the 1st command just after the trouble detected. -
Page 93: Smpinf
Command Details SMPINF? Description Get the sampling information (Sampling points and Sampling resolution). Query SMPINF? Response SMPINF <Sampling points>,<Sampling resolution> <Sampling points> 5001: 5001 (points) 6251: 6251 (points) 20001: 20001 (points) 25001: 25001 (points) The response is “***” when the Sampling points is invalid (not decided). <Sampling resolution>... -
Page 94: Splice
Chapter 4 Commands SPLICE? Calculate the splice loss. Description Query SPLICE? <Event location>,<X1 location>,<X2 location>,<X3 location>,<X4 location> <Event location> m (meter) unit Event location corresponds to EPT (Event Propagation Time) in SR-4731. This value is rounded off to the sampling location internally. <X1 location>... - Page 95 Command Details Response SPLICE <Sampled Event location>,<Sampled X1 location>,<Sampled X2 location>,<Sampled X3 location>,<Sampled X4 location>,<Splice loss> <Sampled Event location> m (meter) unit Event location of the nearest sampling position <Sampled X1 location> m (meter) unit X1 location of the nearest sampling position <Sampled X2 location>...
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Page 96: Srlv
Chapter 4 Commands SRLV Set the SR-4731 level. Description Command SRLV { 1 | 2 | 3 } Level I ..Only key event data block is stored. Level II ... Only trace data is stored in the data point block. Level III .. -
Page 97: Status
Command Details STATUS? Description Read the status of OTDR Module. Query STATUS? Response STATUS { 0 | 1 } Idling (Not measuring) Measuring Dependency Mode OTDR mode Download mode Status Measuring Idling ⎯ Command STATUS? √ √ − √: Command is available −: Command is not available Example >STATUS? -
Page 98: Stp
Chapter 4 Commands Set measurement parameters. (Distance range, pulse width and Description sampling mode parameters) Command STP <Distance range mode>,<Distance range>,<Pulse width mode>,<Pul-se width>,<Sampling mode> <Distance range mode> Manual setting Auto setting <Distance range> If Distance range mode is Auto setting, this variable should be any following value or zero: 5000: 5 (km) - Page 99 Command Details 10000: 10 (us) 20000: 20 (us) 4-55...
- Page 100 Chapter 4 Commands The response is “***” when the Pulse width mode is Auto setting and Pulse width is invalid. <Sampling mode> Normal Fine Query STP? Response STP <Distance range mode>,<Distance range>,<Pulse width mode>,<Pul-se width>,<Sampling mode> Dependency Mode OTDR mode Download mode Status Measuring...
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Page 101: Thf
Command Details Description Set Fiber-end threshold value. Command THF <Threshold> <Threshold> dB unit The setting range is 1 to 99 dB. (1 dB step) Query THF? Response THF <Threshold> Dependency Mode OTDR mode Download mode Status Measuring Idling ⎯ Command −... -
Page 102: Thr2
Chapter 4 Commands THR2 Set Reflectance threshold value. Description Command THR2 <Threshold> <Threshold> dB unit The setting range is −14.0 to −70.0 dB. (0.1 dB step) Query THR2? Response THR2 <Threshold> Dependency Mode OTDR mode Download mode Status Measuring Idling ⎯... -
Page 103: Ths
Command Details Description Set Splice loss threshold value. Command THS <Threshold> <Threshold> dB unit The setting range is 0.01 to 9.99 dB. (0.01 dB step) Query THS? Response THS <Threshold> Dependency Mode OTDR mode Download mode Status Measuring Idling ⎯ Command −... -
Page 104: Tlos
Chapter 4 Commands TLOS? Calculate the Total loss. Description Command TLOS? <X1 location>,<X2 location> <X1 location> m (meter) unit Location of the X1 marker. This location is used as the reference level location for calculating the total loss. <X2 location> m (meter) unit Location of the X2 marker. -
Page 105: Wav
Command Details WAV? Description Read existence of waveform data during OTDR measurement. Query WAV? Response WAV { 0 | 1 } No waveform data Waveform data exists. Dependency Mode OTDR mode Download mode Status Measuring Idling ⎯ Command WAV? √ √... -
Page 106: Wls
Chapter 4 Commands Select wavelength. Description Command WLS <Wavelength> <Wavelength> um unit (Numeric value rounded to three decimal points.) Query WLS? Response WLS <Wavelength> Dependency Mode OTDR mode Download mode Status Measuring Idling ⎯ Command − √ − WLS? √ √... - Page 107 Chapter 5 Sample Sequences This section shows sample sequences about using commands and queries of the OTDR Module (hereafter “OTDR”). Sample Sequences ............5-2 5.1.1 Sequence overview .......... 5-2 5.1.2 Measurement ............ 5-3 5.1.3 Change the network parameters ...... 5-4 5.1.4 Software download ...........
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Page 108: Sample Sequences
Chapter 5 Sample Sequences 5.1 Sample Sequences 5.1.1 Sequence overview Turn ON the OTDR. Wait a moment. Check the Mode . DLMODE? No (Download mode) Respons e = “DLMODE 0”? (OTDR mode) OTDR mode MINF? Get OTDR’s information. MNET? Set date and time . DATE2 OTDR operations as follows: Measurement (Figure 5.1.2-1) -
Page 109: Chapter 5 Sample Sequences
Sample Sequences 5.1.2 Measurement OTDR mode ALA Set measurement parameters. THR2 Set threshold parameters. LD 1 Start the measurement. Operator wants to interrupt the Averaging (Measurement) ? STATUS? Check the status. LD 0 Stop the measurement. Response = “STATUS 1”? (Finish the measurement.) HDFG SRLV... -
Page 110: Sample Sequences
Chapter 5 Sample Sequences 5.1.3 Change the network parameters OTDR mode Set network parameters. Reset the OTDR. Wait a moment. Changed parameters are available. (Figure 5.1.1-1) : Command or Query : Procedure Figure 5.1.3-1 Sample sequence of changing the network parameters... -
Page 111: Software Download
Sample Sequences 5.1.4 Software download When operator want to download the software to OTDR, the following two steps are needed, if the current mode is OTDR mode. If the current mode is Download mode, only Step 2 is needed. Step 1. Change to Download mode (Figure 5.1.4-1). Step 2. - Page 112 Chapter 5 Sample Sequences Download mode Software download Operator wants to change to OTDR mode? DWNLD? Check download status. Response = “DWNLD 0”? DWNLD Download the software. Reset the OTDR. Wait a moment. DWNLD? Check download status. Quit Download mode. Response = “DWNLD 1”? (Figure 5.1.1-1) Response = “DWNLD 2”?
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Page 113: Chapter 6 Performance Test And Calibration
(1) Model name, and instrument serial number affixed at the bottom of the machine. (2) Failure details (3) Name and telephone number of the person in charge whom Anritsu can contact for the detail of the failure or report the completion of repair. -
Page 114: Performance Test
3. Dynamic range 4. Distance measurement accuracy 5. Loss measurement accuracy (Linearity) Specification values of test items The following specification values are guaranteed at a temperature of 25±5°C. 1. MW9077A Item Specification value Remarks Wavelength 1310 ±25 nm Pulse width: 1 µs... - Page 115 Performance Test 2. MW9077A1 Item Specification value Remarks Pulse width 10 ns ±30% 30 ns ±25% 100 ns ±10% 300 ns ±10% 1 µs ±10% 3 µs ±10% 10 µs ±10% 20 µs ±10% Dynamic range 10 ns 30 ns 100 ns 300 ns 1 µs 3 µs...
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Page 116: Wavelength
Chapter 6 Performance Test and Calibration 6.1.1 Wavelength This test measures the center wavelength of the laser output light and checks that it meets the specification. Setup Connect the OTDR Module as shown in the figure below. OTDR Optical spectrum Controller Module analyzer... -
Page 117: Pulse Width
Performance Test 6.1.2 Pulse width This test measures the pulse width of the OTDR output pulse and checks that it meets the specification. Setup Connect the OTDR Module as shown in the figure below. OTDR Variable optical Waveform Oscilloscope Controller Module attenuator monitor... -
Page 118: Dynamic Range (One-Way Back-Scattered Light Dynamic Range)
(a) When MW9077A-01 (Opt 01) is “not” installed. Optical fiber (75 km) OTDR Controller Module Matching oil (b) When MW9077A-01 (Opt 01, 1550 nm filter) is installed and measuring pulse width is 20 µs. Optical fiber (50 km) Optical fiber (25 km) Matching oil OTDR... - Page 119 Performance Test (5) When MW9077A-01 is installed and measuring with pulse width 20 µs, input 1550 nm CW-light by use of the optical fiber coupler (see figure above) and check the level difference conforms to the specification. Adjust the input power of the LD light source to be −20 dBm.
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Page 120: Distance Measurement Accuracy
Chapter 6 Performance Test and Calibration 6.1.4 Distance measurement accuracy This test checks the accuracy of the measured distance, by making a measurement on an optical fiber whose fiber length and IOR are known. This test needs to be performed only at one distance range. Setup Connect the OTDR Module as shown in the figure below. -
Page 121: Loss Measurement Accuracy (Linearity)
Performance Test 6.1.5 Loss measurement accuracy (Linearity) This test checks the accuracy of the loss measurement. There are 2 procedures for test. Setup 1. Connect the OTDR Module as shown in the figure below. This case is for users who cannot prepare the fibers which are calibrated for the linearity. - Page 122 Chapter 6 Performance Test and Calibration Setup 2. Connect the OTDR Module as shown in the figure below. This case is for users who can prepare the fibers which are calibrated for the linearity. Optical fiber (40 km) OTDR Controller Module Test procedure (1) Set the pulse width to 100 ns and the wavelength to 1.31 µm.
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Page 123: Calibration
Calibration 6.2 Calibration Only the back-scattered level can be calibrated using the OTDR. This calibration is needed only when user wants to fit the return loss to the known value. Setup Prepare an optical connector with a known return loss R dB and connect the OTDR as shown in the figure below. -
Page 124: Performance Test Result Record Form
Chapter 6 Performance Test and Calibration 6.3 Performance Test Result Record Form Test location: Report No.: Date: Tested by: Unit name: Serial No.: Ambient temperature: °C Relative humidity: Remarks: 6-12... -
Page 125: Performance Test Result Record Form
Performance Test Result Record Form MW9077A/A1 OTDR Module Test item Specification Result Remarks Wavelength 1310 nm ±25 nm Pulse width: 1 µs 1550 nm ±25 nm Pulse width: 1 µs Pulse width 10 ns 10 ns ±30% 30 ns 30 ns ±25% 100 ns 100 ns ±10%... - Page 126 Chapter 6 Performance Test and Calibration 6-14.
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Page 127: Chapter 7 Maintenance
Chapter 7 Maintenance This section explains how to clean the OTDR Module to maintain its performance, as well as the suggestions for storage and transportation. Optical Connector & Optical Adapter Cleaning .... 7-2 Suggestions for Storage ..........7-4 Method of Transportation ..........7-5 Disposal ................ -
Page 128: Optical Connector & Optical Adapter Cleaning
Chapter 7 Maintenance 7.1 Optical Connector & Optical Adapter Cleaning Cleaning built-in ferrule end-face Use adapter cleaner supplied for this module to clean the built-in optical I/O connector ferrule. Clean the ferrule periodically. Cleaning optical adapter Use adapter cleaner supplied for this module to clean the optical adapter for connection to the fiber-optic cable. -
Page 129: Optical Connector & Optical Adapter Cleaning
Optical Connector & Optical Adapter Cleaning Cleaning the ferrule end-face of the fiber-optic cable Use ferrule cleaner supplied for this module to clean the ferrule of the cable end. An example of the FC connector is described below. Follow similar methods and steps for cleaning other connectors. (1) Lift the ferrule cleaner lever to access the cleaning face. -
Page 130: Suggestions For Storage
Chapter 7 Maintenance 7.2 Suggestions for Storage The following points should be kept in mind if the module is not to be used for a long period of time. (1) Store the module after removing the dust on it. (2) Do not store the module at a place where the temperature in greater than 60°C or less than –20°C, or where the humidity is greater than 85%. -
Page 131: Method Of Transportation
Method of Transportation 7.3 Method of Transportation To transport this module, repack it using the packing materials used at the time of purchasing. If the packing materials have not been kept, repack it as indicated in step (3) and (4) below. The repackaging procedure is as follows. -
Page 132: Disposal
Chapter 7 Maintenance 7.4 Disposal Follow the instructions of your local waste disposal office when disposing of theOTDR Module. 7-6. -
Page 133: Appendix A Specifications
Appendix A Specifications (1) OTDR Module (MW9077A/A1) Items Specifications Remarks Model name/Unit name MW9077A/A1 OTDR Module Wavelength 1310 ±25 nm (MW9077A) at 25°C 1550 ±25 nm (MW9077A1) Pulse width: 1 µs Fiber under test 10/125 µm SMF (ITU-T G.652) Optical connector... - Page 134 Appendix A Specifications Items Specifications Remarks Dynamic range MW9077A ≥41 dB at 25°C, 20 µs ≥39 dB at −5 to +55°C (SNR=1) MW9077A1 ≥40 dB at 25°C, 20 µs ≥38 dB at −5 to +55°C (SNR=1) Deadzone ≤20 m Pulse width: 10...
- Page 135 While automatic measurement is a supporting function which enables to operate easier, it doesn’t assure the measured results. As there is a case of miss detection, check the waveform as well. Sweeping times in OTDR. Limitted by the interface with a controller and a software to read out.
- Page 136 Appendix A Specifications (2) 1550 nm filter (MW9077A-01) Item Specifications Remarks Filter characteristics Insersion loss ≥55 dB (1500 to 1650 nm) ≤0.8 dB (1310 ±25 nm) Return loss ≥50 dB (3) Peripherals and parts Item Specifications Model name MW9077A/A1/B W2254AE...
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Page 137: Appendix B Least Square Linear Approximation Method
Appendix B Least Square Linear Approximation Method When splice loss is measured, assume two lines, L1 and L2, from the measurement data and obtain the loss as shown in the figure below. There are two methods for determining these lines: the LSA and 2PA methods. - Page 138 Appendix B Least Square Linear Approximation Method When this equation is solved, the variables a and b can be found as shown below. ∑ ∑ ∑ − xiyi xiyi − ∑ − ∑ − ∑ ∑ where, B-2.
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Page 139: Appendix C Splice Loss Measurement Principle
Appendix C Splice Loss Measurement Principle The trace waveform at the splice point should be displayed as indicated by the dotted line in the figure below, but is actually displayed as indicated by the solid line. The reason why section L is generated is because the waveform inputted to the OTDR shows a sharp falling edge at the splice point so that the circuit cannot respond correctly. - Page 140 Appendix C Splice Loss Measurement Principle C-2.
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Page 141: Appendix D Return Loss Measurement Principle
Appendix D Return Loss Measurement Principle The return loss R is found from the following equation. − − α ⋅ ⋅ ⋅ − ⋅ W (sec): Currently set pulse width Difference of levels between * and ∇ markers BSL = 10 log bsl: Back-scattered light level Back-scattered coefficient Rayleigh scattering loss (Np/m) - Page 142 Appendix D Return Loss Measurement Principle D-2.
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Page 143: Appendix E Total Return Loss Measurement Principle
Appendix E Total Return Loss Measurement Principle Use the following equation to obtain the total return loss, or TRL, in dB. − ∞ ∫ − ∞ ∫ − where ∞ ∫ − − Reflected light energy Ein: Incident light energy P (t): OTDR measurement power Incident light pulse peak power at t = 0... - Page 144 Appendix E Total Return Loss Measurement Principle E-2.
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Page 145: Appendix F Pulse Width, Distance Range And Resolution
Appendix F Pulse width, Distance range and Resolution Auto Distance Range Manual Distance Range Selectable Selectable Resolution Resolution Pulse Width (ns) Measure Range Measure Range Fine Normal Fine Normal (km) (km) 0.05 0.05 0.05 0.05 0.05 0.05... - Page 146 Appendix F Pulse width, Distance range and Resolution Auto Distance Range Manual Distance Range Selectable Selectable Resolution Resolution Pulse Width (ns) Measure Range Measure Range Fine Normal Fine Normal (km) (km) 1000 3000 10000 20000 F-2.
- Page 147 Index 1.4, Appendix B 1.4, Appendix B average limit net mask 3.2.1, 4.1 averaging 4.1, Appendix A parity 3.1.1 backscatter coefficient pin assignment 2.3.2 backscatter level 6.2, Appendix E pulse 4.1, 6.1, 6.1.2, 6.3, baud rate 3.1.1 Appendix D, 3.1.1 Appendix E cleaning reflectance...
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Page 148: Index
Index Index-2.
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