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PRO-CW8-SM35 - Precision Rated Optics

1. 10 11 Internal Memory Statistics 11 Loss Test Set DESC HDT OM cnc riecedecenidescdncediedesanncmmnecscmeninedsadudanesecdadnunagntebuseoadsanesneneces Entering Loss test Set Mode Key Pad Opetation Loss Test Set Displays LTS Live Scan Mode LTS File View Mode 11 4 LTS Soft Key Operation Source Power Meter Mode 11 5 LTS Icon List Help Delete 12 Loss Test Set Operation 12 1 Power Meter Measurements Power Measurements Relative Measurements 12 2 Auto Test Mode 12 3 Light Source Operations 12 4 File View 12 5 File Transfer 13 Channel Analyzer Op eran ciccctscenaa wa ice na 13 1 Key Pad Operation 13 2 Channel Analyzer Display Displayed Scan Measurements 13 3 Enter Channel Analyzer function 13 4 Channel Analyzer Table 13 5 Unit of Measure 13 6 Quick Save Recall Table of Contents Lambda Wavelength Selection File Download Set Reference dBm dB Calibration CAL Exit Application PAGE Chapter Table of Contents PAGE 14 15 16 17 18 19 20 21 Continued Channel Analyzer File Management Li 44 14 1 File Management display 14 2 Viewing a stored Scan 14 3 File Management Soft Key Functions Exit File Management Copying Files to a Personal Computer Copying Files to Flash Drive Naming a File Renaming a File Deleting Files Marking Files Viewing Scans from a USB Flash Drive Video Scope OPE aio ii 47 15 1 Video Scope Display 15 2 Video Scope Operation 15 3
2. Do not use the charger without the batteries installed Do not expose the battery charger to rain or excessive moisture Do not use the AC adapter when there are signs of damage to the enclosure or cord Ensure that you are using the correct charger for the local line voltage Do not use any other charger than the one provided with this instrument VVVVV WV Failure to follow these caution statements may void the warranty of this equipment Note For maintenance batteries require a monthly recharge 17 2 Calibration and Verification Periodic verification of the PRO CW8 SM35 is recommended to ensure that your instrument remains within speci fication Although not imperative we recommend a calibration and verification once a year to make certain the instrument is functioning properly and performing to its rated specifications Consult the factory for service 17 3 Adapter Replacement The PRO CW8 SM35 is supplied with two easily interchangeable adapters per port SC FC To change an adapt er remove the two screws that hold the adapter in place pull the adapter straight up from ferrule It is suggested that you clean the exposed ferrule with appropriate cleanser and lint free wipe anytime you replace the ferrule Note In order to maintain a low loss fiber connection care should be taken to adequately clean the ferrule of any connector to be connected to the OSA In the event that the port needs to be cleaned first step is to be cert
3. Turn off all sources by cycling to the Off position Power Meter Enter the Menu mode and scroll to highlight the Power Meter soft key Press the Select button to cycle through the available wavelengths See Lambda wavelength icon information below Mode Enter the Menu mode and scroll to highlight the Mode soft key Press the Select button to toggle between the Live Scan mode and File View mode 11 5 Loss Test Set Icon List Help The Loss Test Set has an onboard help feature To access the help feature enter the Menu use the scroll wheel to highlight the Question Mark Icon and press the Select button Scroll to the desired topic and press the Select button Press the Menu button again to exit the help feature Delete Deleting a stored loss measurement is accomplished in the File Selector mode See LTS File Selector operation Section 11 4 To delete a measurement s from a single memory location while in the File Selector select the desired test to be deleted press menu scroll to the Delete icon and press select Note There is not warning or confirmation necessary to delete one memory location To delete the all the memory locations at one time follow the procedure above however do so on and empty location When the Delete icon is select on the empty location a Confirm dialog with Delete all files will be displayed and the option to Delete or Cancel the action Press the Select button with the desired action high
4. Use the thumb wheel to focus the image To zoom to 400X press the Zoom button Pressing the Zoom button again will revert back to 200x PRO CW8 SM35 Users Guide Revision A 3 2012 47 Pr wj 15 3 Video Scope Soft Keys To access the Soft Keys press the Menu button and use the scroll wheel to highlight the desired Key Home Used to return to the Home Screen Copy To copy or delete images Press the Menu button and scroll to the Copy soft key Pressing select on the soft key will display a dialog that offers the option of coping all of the images to the PC via the USB PC port or to a flash drive The dialog will also offer the option to delete all the stored video files or cancel the process Scroll to the desired action and press the Select button Note Do Not Remove USB Flash Drive While Accessing Save The Video image may be saved as a Bitmap by pressing the Menu button scrolling to the Save soft key and pressing the Select button This will attempt to save the image to the location displayed next to the Save soft key If that location is occupied by a stored image a dialog will appear with the choice to overwrite that location save to the next available location or cancel the process Scroll to the desired action and press the Select button Recall To view a stored image scroll to the Load soft key and press select to view the image at the indicated location Subsequent presses of the Select button will increment through the o
5. Internal Memory Statistics screen To view this screen while in file management press Menu scroll to the View tab and select Stats from the dropdown menu This will indicate the percentage of memory used and how many more traces of a specific range may be saved PRO CW8 SM35 Users Guide Revision A 3 2012 33 PR wj 11 0 Loss Test Set Description 11 1 Entering Loss Test Set Mode The LTS application is entered from the Home Menu Use the Scroll Wheel to highlight the LTS application Tab and press Select From the OTDR application press the Menu button scroll to the Exit Icon and press Select to return to the Home Menu When in the Scope application Press the Menu button scroll to highlight the Return soft key and press Select to return to the Home Menu 11 2 Key Pad Operation Power button turns the unit on and off Resets any temporarily memory values before they have been stored with the select button Auto Test Select Scan Minted Starts the Auto Test function The light source will be turned on and cycle through the wavelengths selected with the A icon Fig 11 1 ented Toggles between the Test mode and the Menu mode where the focus of the Scroll Wheel and the Select Button are on the soft keys and icons NE Cycles through the power meter wavelengths selected with the A Icon When in the File Selection Screen this key will toggle through save values for a particular storage position Changes the display to
6. Show Event soft key and press the Select button Use the Scroll Wheel to move through the events If the Select button is pressed while an event is highlighted The OTDR will revert to the Trace Screen with the active cursor positioned at the selected event An alternative method to return to the trace view is to press the Menu button scroll to the Show Trace soft key and press the Select button 9 2 Event Analysis Table Soft Keys Sense Hi Splice lt 150 ORL lt 60 Link lt 5 End gt 35 Show Trace t 8 PAF KM _ SPLICE aPoINT DEAKM TYPE eal Scroll Bar 2 s B 5452 1 315 0 027 0 182 Paget of Total a 7 Je 9116 Fe pes P nta 342 35 4 Pages Parameter Settings of TraceEvent Number End of Fiber Event 2 Point Event Location Loss Type Pass Event dB KM KF or Fail Loss MI Fig 9 1 PR A 28 PRO CW8 SM35 Users Guide Revision A 3 2012 9 3 Field Descriptions Event Number Indicates the events in sequence higher numbers are further distances from the OTDR E which is always displayed in the bottom row is the event determined to be the End of Fiber EOF P F Pass Fail Pass Fail if any one of the thresholds are not met for and event the P F column will display a red X The param eter that failed will also be displayed in red If all the parameters are met a green check mark will be dis played KM Event Location Event Location Km for Kilometer or KF for Kilo feet or Mi for Mile This is the
7. Status and Grid Values Battery Status Measurement Area Parameter Settings see fig 7 3 for more detail see fig 7 4 for more detail Fig 8 2 Trace Measurements A Cursor A to B dB Loss Splice Loss Distance Per Unit of Measure B Cursor A to B Index Of Refraction Splice Loss 2 Point Loss Fig 8 3 Trace Parameters FLJ Wavelength Setting A 2858 mote Pulse Width Setting Averaging Mode AWG Long Range Setting Fig 8 4 PRE 18 PRO CW8 SM35 Users Guide Revision A 3 2012 OTDR Display with Menu Open Soft Keys E B 1 9830 D i dee ANG Short UE 4km 1316 FU sons aC 8 3 OTDR Tools Menu Below is a list of the settings available through the Tools Menu in the OTDR mode Press the Menu button to open the Menu mode scroll to the Tools icon and press the Select button Scroll to the desired setting and press Select to open Resolution The resolution tool should be highlighted Use the Select button to toggle between Low and High This resolu tion feature affects the ranges of 4km and 16km At low resolution 4km range data points are meter apart and at high resolution the data points are 1 8 meter apart At 16km range the low resolution date points are 1 meter apart and at high resolution the data points are 1 8 meter apart Unit of Measure The distance unit of measure may be either displayed in Kilometer Km Kilo feet Kf or Mile Mi Scroll to Unit of Measure icon and
8. Video Scope Soft Keys Home Copy Save Recall Adjust Position adjust contrast vidie Fatt Locator VEL elia e 49 16 1 VFL Description 16 2 VFL Operation By ANRC AN CS ce as ara eeeeu a asad E A E E E R ai a 50 17 1 Battery Replacement 17 2 Calibration 17 3 Adapter replacement Specifications Warranty and repair 19 1 Warranty Information 19 2 Repair Information Trouble Shooting Guide Version Control This Manual contains information for the PRO CW8 SM35 which is an OTDR CWDM Channel Analyzer Broad Band Power Meter Stable Light Source Visual Fault Locator and Video Scope contained in one unit The beginning of the manual contains general information pertaining to the physical features of the equipment Please refer to the appropriate chapters for information on the operation of each individual function There are warnings cautions and notes annotated through this manual Warning A warning alerts to situations that could cause personal injury Caution A caution alerts to situations that may cause damage to the equipment or produce poor testing conditions resulting in inaccurate test results Note A special annotation that will assist the user with operational features PRO CW8 SM35 Users Guide Revision A 3 2012 1 Pe w Chapter 3 of this manual is a quick start guide Prior to using the quick start guide or operating the equipment in any way it is highly suggested the user reads all safety information This
9. display to indicate the Auto Test Mode PRO 5 3 Inspection Before shipment this instrument was inspected and found to be in perfect working order and free of defects The shipping carton contains the following 1 Hand Held OTDR OSA with protective boot and 8 AA NiMH batteries installed 2 Universal AC DC charger with interchangeable mains 3 USB cable 4 Manual on CD with Windows compatible software and user s manual 5 Set of interchangeable adapters SC and FC for each OSA port 5 2 Identification and Configuration The instrument s Model Part Number Serial Number and Date of Manu 2 facture are indicated on a label located on the bottom plate of the unit ss Si The instrument s history is filed at the factory by model part number and serial number Fig 5 1 5 3 Power Requirements The PRO CW8 SM35 is equipped with a 100 240V 0 4A input and 13 6V 0 75A center positive output universal AC DC battery charger This charger is supplied with interchangeable mains for US Great Britain Europe and Australia The unit is shipped with 8 AA NiMH batteries 2700mA hours Depending on usage fully charged battery pack will typically enable approximately 8 hrs of use Fully discharged batteries require 6 8 hours of recharging PRE 8 PRO CW8 SM35 Users Guide Revision A 3 2012 5 3 Power Requirements continued Battery replacement is not recommended however if you must replace the batteries follow this procedu
10. event that meets this threshold will be identified as the end of fiber To return to trace view press the Menu button scroll to the Show Trace soft key and press the Select button BPR O 30 PRO CW8 SM35 Users Guide Revision A 3 2012 10 0 File Management 10 1 Display Context Sensitive File Management Tabs Help See Fig 9 2 Filename I Eng Pl Date L Admin HPE 19 1559 6dkm ius 69 21 69 18 File Name Range Time Stamp Wavelength Pulse Width Defualt Notes Sie gd Fig 10 1 Ne dt view Mar File Edit view Park Delete Exit 10 2 Entering Exiting File Management Press the Menu button scroll to highlight the TRC Disc icon and press the Select button For each test file saved an indication of wavelength range pulse width and a time stamp are stored The file name can have up to 16 characters using the following 0 9 A Z a z _ underscore or blank To close the File Management Sys tem press the Menu button scroll to highlight the File Tab scroll to Exit and press Select 10 3 Saving a Trace There are two methods to save traces The first is the Quick Save method described in section 8 10 The second method is to enter file management with a trace on the display press the Menu button scroll to the File Manage ment icon and press Select Press the Menu button to the shift the focus of the scroll wheel to the file manage ment tabs Highlight the File tab press Select and wit
11. in instrument and certification software Un install amp re install certification software and drivers Clean or use a new flash drive Turn power off wait 5 seconds turn back on 54 PRO CW8 SM35 Users Guide Revision A 3 2012 19 0 Version Control Through a program of continuous improvement the upgrade of the features and performance of this instrument are an ongoing process The version is displayed on Home Screen in the lower right hand corner of the display The version changes and approximate release dates are as follows V0 2 7 2012 Initial release date PRO CW8 SM35 Users Guide Revision A 3 2012 55 Pr w
12. instrument This warranty does not extend to any loss or damage consequent to the failure of the warranted product 19 2 Repair Information If repair is required simply call the factory for return instructions and a RMA number PRO CW8 SM35 Users Guide Revision A 3 2012 53 BER w Power not on LCD dark Batteries require recharging Batteries are missing in backwards or need replacement Press ON OFF key Recharge batteries Check polarity replace batteries or contact factory for servicing LCD white Power cycled too quickly Turn off wait 10 seconds turn on Instrument locked Up Unexpected Operational Mode Activity indicator does not change to standby or active mode Power cycled too quickly Defective cord or dirty connector Low or no power being dis played Fiber Output port requires cleaning Angle polish mated with UPC polish USB baud rate not set properly or USB hookup to PC not func too quick for computer tioning properly PC drivers not set properly USB flash drive full USB Flash Driver not func tioning properly USB flash driver cycled too quickly PRC Turn off hold ON OFF button in for 1 abd wait 10 seconds then depress On Off again button to turn the unit on Turn off wait 10 seconds turn on Replace or clean cord Clean and inspect port Examine connector ends for damage Use UPC Connectors ONLY Set port baud rate properly or de crease Baud rate
13. mark a file Files may be skipped by shuPROng off the marking feature scrolling ahead and turning the feature back on To do this once the last trace of a section has been marked press the Menu button scroll to the next file to be marked press Menu again press Select or scroll to continue marking the files Once all the desired traces are marked they may be deleted or copied as necessary BPR O 32 PRO CW8 SM35 Users Guide Revision A 3 2012 10 8 Copying Traces NOTE Limit flash drives to 4 gigabytes It is suggested that new flash drive sticks be tested prior to use Save traces to the flash drive from the OTDR and test them on the computer with the supplied software to ensure they operate properly NOTE Do Not Remove USB Flash Device While The OTDR Attempts To Read Or Write To That Port Traces may be copied to the USB flash drive or to a PC for use with the certification software The Certification Software is required to copy trace files to a computer through the USB PC Port With a trace highlighted or a group of traces marked press the Menu button and scroll to the Edit tab press Select chose either Copy PC or Copy USB from the dropdown menu and press select 10 9 Deleting Traces Traces may be deleted from the internal memory or USB flash drive With a trace highlighted or group of trace marked press the Menu button scroll to the file tab choose Delete from the dropdown menu with the scroll wheel and press Select Use the
14. product has been designed and tested in accordance with the Manufacturer s safety standards and has been supplied in a safe condition This document contains information and warnings that must be followed by the user to ensure safe operation and to maintain the product in a safe condition Failure to follow these safety warnings can result in damage to the instrument or harm to the user Warning Personnel should always be aware when working with fiber optic test equipment that active fibers may be present and therefore infrared optical energy may be present Warning Never look directly into the end of a connected fiber optic cable or fiber optic adapter of test equipment to do so could expose the user to laser radiation and could result in sever personal injury Warning To Prevent Fire or Shock Hazard Do not install battery types other than those specified by the manufacturer Do not use the charger without the batteries installed Do not expose the battery charger to rain or excessive moisture Do not use the AC adapter when there are signs of damage to the enclosure or cord Ensure that you are using the correct charger for the local line voltage VV VV V Y Do not use any other charger than the one provided with this instrument FREE SI 2 PRO CW8 SM35 Users Guide Revision A 3 2012 Failure to follow these cautions statements may void the warranty of this equipment Caution Fiber optic connectors are easily contami
15. the Back Light press the Menu button to enter the menu mode scroll to the Tool Box icon press Select and use the scroll wheel to highlight the Backlight icon press the Select button to toggle the back light to Bright or Dim The status is displayed at the top of the display Press the Menu button to exit the Tools Box sound To toggle the speaker on or off press the Menu button to enter the menu mode scroll to the Tool Box icon press Select and scroll to the Speaker icon press the Select button to toggle the speaker on and off The status is dis played at the top of the display Press the Menu button to exit the Tools Box Baud Rate The Baud rate is set to auto detect for use with the software If it is necessary to make an adjustment to the Baud rate press the Menu button to enter the menu mode scroll to the Tool Box icon press Select and use the scroll wheel to highlight the Baud Rate icon Press Select use the scroll wheel to make a selection press Select again and the unit will exit to the menu mode and return to the main screen Home Highlight the Home icon and press Select to return to the home page PRE 16 PRO CW8 SM35 Users Guide Revision A 3 2012 8 0 OTDR Operation 8 1 Key Pad Power button turns the unit On and Off Hold for 1 second Auto Test Select This key will start a scan or stop the current scan Scan Fig 8 1 This key starts autotest range finder and construction mode scans The range finder ch
16. the power meter end Once the source and power meter have cycled through the wavelengths to be tested press the Select button on power meter to store the measurements Note Areference measurement is not used in the Auto Test Mode The Source is modulated and has power level of 3dBm 6dBm 1625 This method of measurement does not take into account the launch condition thus the manual method of testing should be used when highly accurate measurements are required such as when testing the loss of an individual connector The Auto Test annunciator will be displayed during Auto Test loss measurements Two or more loss measurements are best viewed in the Zoom mode where all the selected wavelengths will be display at one time on the display BPR O 38 PRO CW8 SM35 Users Guide Revision A 3 2012 12 3 Light Source Operation The lasers are initially in the off state when the LTS is launched Enter the Menu mode and use the Scroll Wheel to highlight the Source soft key Pressing Select will energize the available wavelengths in sequence 12 4 File View Enter the File View by pressing the Menu button scrolling to the Mode soft key and pressing Select Press Menu to exit the Menu mode Use the scroll wheel to scroll through the stored traces The Store location in the bottom left of the screen will be changed to VIEW location The value shown is the data stored in the displayed file loca tion To exit the File View press the Menu button scroll to
17. 0 208 30dB lt 1 2 Second 0 01dB gt 40dB Universal UPC FC SC Bar Graph and Table View 1000 scans Rechargeable NiMH 8 hours operating time 20 to 60 C 10 to 50 C 7 75 Lx 4 5 W x 2 25 H 197mm L x 114mm W x 57mm H 2 Ibs Operation 10 C to 50 C USB and USB Flash Drive Ports Universal Power Adapter w US UK Continental Europe and Australian Plugs Interchangeable FC ST and SC Adapters Windows Telcordia SR4731 Software Rubber Boot and Manual on CD PRO CW8 SM35 Users Guide Revision A 3 2012 51 Specifications are subject to change without notice PRE 0 18 dB under reference conditions 0 25 dB from 0 to 65 dBm Power Measurement Uncertainty 0 35 dB from 0 to 5 dBm and from 65 to 77 dBm Auto Test Range 0 to 40dB Specifications are subject to change without notice PR A 52 PRO CW8 SM35 Users Guide Revision A 3 2012 19 1 Warranty Information This product including all mechanical electrical and optical parts and assemblies are unconditionally warranted to be free of defects in workmanship and material for a period of one 1 year from the date of delivery This warranty does not apply to expendable parts such as batteries or optical panel connectors nor to any instrument or component which has been subjected to misuse alteration or fiber connector damage It is the customer s responsibility to understand all the instructions and specifications prior to operating this
18. 2 VFL Operation Visible Fault Locator Operation This feature is accessed from the Home screen From startup scroll to highlight the VFL icon and press select to cycle through VFL through CW constant wave mode or MOD modulated mode and Off If the instrument is in OTDR or LTS mode press the Menu button scroll to the Exit icon and press Select to return to the Home screen When in the Video Probe mode scroll to the Exit soft key and press Select to return to the home screen Note When in the OTDR application and the VFL is required the active trace will not be lost by exiting to the home menu PRO CW8 SM35 Users Guide Revision A 3 2012 49 PR w 17 0 Maintenance 17 1 Battery Replacement Battery replacement is not recommended however if you must replace the batteries follow this procedure Unplug external power supply and ensure the unit is turned off Carefully remove unit from protective boot and remove the two screws from top plate and bottom plates that retain the back cover Carefully remove back cover and remove the two screws that hold the battery covers in place Replace only with 8 high quality AA NiMH bat teries Do not use batteries that are rated at less the 2500mAh If you install NiMH batteries that are dead or less than 1 volt each charge these batteries for one 1 hour before using this unit Warning To Prevent Fire or Shock Hazard Do not install battery types other than those specified by the manufacturer
19. Event soft key and press the button to change to the event analysis mode PRO CW8 SM35 Users Guide Revision A 3 2012 5 PR wj 4 2 CWDM Channel Analyzer Quick Start Guide Press to turn on the PRO CW8 SM35 Using UPC finish connectors only connect the fiber to be tested to the CWDM Optical Port and press the button 40i to start a scan Note There is an activity indicator in the bottom left of the display see figure 8 3 When the indicator is red the unit is ready to scan to start scanning press the Scan button When the Channel Analyzer is scan ning the activity indicator will be green The number of channels displayed may be limited by using the Span Start bl Span End or Span Zoom lhi features These features are fully described in section 8 4 of this manual Note Scale Minimum Power and Span Minimum power are not applicable on the PRO CW8 SM35 CWDM Channel Analyzer BPR O 6 PRO CW8 SM35 Users Guide Revision A 3 2012 4 3 Loss Test Set Quick Start Guide Press to turn on the OTDR Use the Scroll Wheel to highlight the LTS function icon and press Connect a properly prepared reference cord to the power meter port and the light source port If the unit is a quad wavelength unit ensure the proper port is connected Press and use the Scroll Wheel to highlight the Source soft key at the top left of the display Press O to energize the first wavelength Once stabilized use the Scroll Wheel to high
20. M35 Users Guide Revision A 3 2012 4 0 Quick Start Guides 4 1 OTDR Quick Start Guide Press to turn on the OTDR The OTDR function will be highlighted Press to initiate the OTDR application Connect the fiber to the appropriate port Select Multi Mode or Single Mode if OTDR is a quad wavelength unit Menu Press to enter the Menu mode Use the Scroll Wheel to highlight the Pu in the icon list Press to cycle to the desired wavelength The OTDR will start a scan at the parameters displayed If approximate fiber length is not known Press the button after selecting the wavelength Press on Range Finder the Auto Test feature will start and set an appropriate pulse width and range automatically If approximate fiber length is known Menu Press and scroll to AUG Press gt to cycle through the averaging times of R T for real time Short for a 10 second average time or Long for a 5 minute averaging time Di Press to cycle through the pulse width select 2m for fibers up to 4 kilometers 10m f or fiber up to 16 kilometers 100m for fibers up to 64 kilometers or 1k for fibers up to 2 40 kilometers RNG Press to toggle between to available range settings Press M to exit the menu mode To manually start a scan Press Mi while the unit is idle To stop a scan Press Mill while the unit is scanning To view the Event table Press WS to enter Menu mode and use the Scroll Wheel to highlight the Show
21. PRO PRO CW8 SM35 OTDR CWDM Channel Analyzer Revision A 7 2012 Information contained in this manual is believed to be accurate and reliable However no responsibility is assumed by Preci sion Rated Optics for its use nor for any infringements of patents or other rights of third parties that may result from its use No license is granted by implication or otherwise under any patent rights of Precision Rated Optics The information contained in the publications is subject to change without notice Copyright 2012 PRO Chapter Table of Contents 1 Using This MANA pinna ora i 2 S 3 BIBLE OCC HOU siriani 4 PRO CW8 SM35 Quick Start US apostate rappr iaia lagen 5 4 1 OTDR Quick Start Guide 4 2 CWDM Channel Analyzer Quick Start Guide 4 3 LTS Quick Start Guide 5 Prepar ton TO USG arrien igei EE EEEE n E EE AEE EE 8 5 1 Inspection 5 2 Identification and Configuration 5 3 Power Requirements 6 ES CO OU nase sta toi RT AR RIN Et 10 6 1 Instrument Description Instrument Enclosure Display Key Pad Scroll Wheel 6 2 Physical Front Panel Top Plate Bottom Plate 6 3 Home Screen 6 4 Icon Definitions Setup Icons OTDR Icons OTDR Toolbox Icons Channel Analyzer Icons LTS Icons T General Features and Separa 7 1 General Features Battery Level Power Indicator USB Flash Drive USB PC 7 2 Setup Menu Set Date and Time Brightness Sound Baud Ratet Home 8 OT FF DS OM iaia Tn 17 8 1 Key Pad Operation 8 2 OTDR Display Trace D
22. USB Flash drive Insert the USB Flash drive into the proper port and enter the menu mode Scroll to highlight the USB soft key and press the Select button The PRO CW8 SM835 will read any OSA files in the root directory of the flash drive Highlight the file to be viewed and press the Select but ton To exit the flash drive directory press the Select button a second time while the USB soft key is highlighted and the focus will revert back to the on board file management system BPR 46 PRO CW8 SM35 Users Guide Revision A 3 2012 15 0 Video Scope The PRO CW8 SM35 can accommodate PRO Video Probe Located on the bottom panel is a an 8pin DIN con nector labeled Vid Probe The PRO CW8 SM35 can view a connector end face center the image and zoom from 200X to 400X This feature is accessed from the Home screen 15 1 Video Scope Display Soft Keys Return to Home Menu Help Icon Note Only the Soft Keys and the Help Icon are acces sible on the Video Probe display 15 2 Video Scope Operation From startup scroll to highlight the Scope icon and press select If the instrument is in another application press the Menu button scroll to the Home or Exit icon and press Select to return to the Home screen Insert the probe and turn on the probe light by moving the switch on the probe to the right The LED will illuminate indicating the probe light is on Insert a connector to the probe or insert the probe into a fiber adapters and focus
23. ain the instrument is off We suggest the use of isopropyl alcohol and foam swabs specifically designed for cleaning connectors accepting 2 5mm ferrules Note When replacing the adapter with one that does not have a chained protective cap use the small screw in place of the larger screw that retains the end of the chain to the adapter base BPR O 50 PRO CW8 SM35 Users Guide Revision A 3 2012 Specifications Wavelength Dynamic Range Pulse Width Units of Measurement Event Dead zone Attenuation Dead Zone Resolution Distance Uncertainty Full Scale Distance Range Typical Real time Refresh Rate Group Index of Refraction GIR Linearity Connector Styles Memory Capacity Display Memory Type Battery Storage Temperature Operating Temperature Range Dimensions w out rubber boot Weight Environmental Communications ports Accessories Provided 1310 1550 nm 36 34dB SM 5 20 000 ns km kf mi 1m 4m 125 32m 0 75m 0 005 x distance sampling CWDM Channel Analyzer Wavelength Range Channel Spacing Channel Pass Band Channel Power Range Absolute Accuracy Max Composite Power PDL Adjacent Channel Isolation resolution 1 240km SM Measurement Time 2 Hz Readout Resolution 1 024 2 048 Return Loss 05 dB dB Optical Interface oe Graphical Display 500 Memory Capacity General 4 in Color TFT Internal and Flash Drive 1471 1611nm 20nm 6 5nm 5dBm to 50dBm 1 dB 23dBm
24. as possible to the actual IOR of the fiber If this is unknown it is best to use the default setting on the OTDR To change the IOR highlight the IOR icon and press the Select button Use the Scroll wheel to change the IOR value When the desired value is reached press the select button again and the OTDR will prompt the user to save or cancel the changes Use the scroll Wheel to highlight desired action and press the Select button BPR O 22 PRO CW8 SM35 Users Guide Revision A 3 2012 8 5 Manual Scan Setting continued Wavelength Use the scroll wheel to highlight the Lambda key press select to cycle through the available wavelengths AVG Use the scroll wheel to highlight the Average AVG icon and use Select button to cycle through Real time averaging with a up to 2 pps refresh rate Short average 30 seconds or long average 10 minutes Changing this setting will also initiate a scan Pulse Width Use the scroll wheel to highlight the PW icon and use the Select button to cycle through the available pulse widths for the selected range The pulse widths are listed in the table below Range Use the scroll wheel to highlight the RNG icon and use the Select button to choose the desired range Available ranges are listed in the table below Pulse Width SG CN ll I _ _O_ Luo 1km km Range on MN NN E em __ 00 N I I I Fig 8 6 8 6 Viewinga Trace Zoom There are five zoom levels 1x 2x 4
25. bbbbb10 0SA The name would be adjusted to accommodate the two digit identifier With the storage capability of up to 1000 scans the identifier could possibly use up to three positions It is suggested that this be taken into consideration when creating the base file name Renaming a File To rename a file highlight the file to be renamed press the Menu button and scroll to the Name soft key Press select and the first character of the file name will be highlighted Continue to name the file as described earlier press menu when done to either save changes or discard changes Deleting Files To delete files Highlight the file or Mark files see Marking Files below to be deleted Press the Menu button and scroll to the Del soft key Press select and Cancel or Confirm delete will be displayed in the soft key bar Use the scroll wheel to highlight the desired action and press Select Marking Files Mass Copying and deleting can be accomplished with the Mark soft Key Highlight the first file to be copied or deleted press the Menu button scroll to the Mark soft key and press Select Use the scroll wheel to move through the files Moving clockwise marks any files that are passed and move counter clockwise un marks any files that are passed Marked files will be displayed in red Press the menu button again and select the desired soft key function to be completed Viewing Scans from a USB Flash Drive The PRO CW8 SM35 can view files from a
26. can Preview Map Fig 14 1 PRE 44 PRO CW8 SM35 Users Guide Revision A 3 2012 14 2 Viewing a Store Scan To view a scan that has been stored in the file management area press the select button while the desired file is highlighted and the file will open in the scan mode 14 3 File Management Soft Key Functions Exit File Management There are two methods to return to the scan screen from the file management area First is to enter the menu mode scroll to the Exit soft key and press select The second is to press select while a file is highlighted this will open the scan screen with the highlighted file displayed Copying Files to a Personal Computer With the use of the supplied certification software and USB cable the stored files may be copied directly to a PC Highlight or Mark see Marking Files on the next page the desired file s to be copied and scroll to the Copy PC soft key Press Select to move the files to the computer when directed to do so in the certification software Copying Files to Flash Drive To Copy files to a flash drive insert a flash drive not to exceed 4Gbits in capacity into the flash drive port High light or Mark see Marking Files on the next page the desired file s to be copied and scroll to the Copy USB soft key Press Select to copy the files to the root directory of the flash drive Naming a File The Name soft key may be used to name a file for a new scan to be saved or to rename a currently stor
27. ccupied storage locations Adjust Position Adjust Contrast This soft key is a toggle between adjust Positon and Adjust Contrast With Adjust Position soft key is shown the image may be centered by use of the scroll wheel when in the 400X zoom setting For positioning use the scroll wheel as a left right up down feature by pressing those areas of the wheel With Adjust Contrast soft displayed the scroll wheel will change the contrast of the image FREE SI 48 PRO CW8 SM35 Users Guide Revision A 3 2012 16 0 Visible Fault Locator VFL WARNING Never clean or look directly into the fiber optic connector or the end of fiber attached to the OTDR or VFL unit while they are energized to do so will expose the user to laser radiation and could result in personal injury or instrument damage 16 1 VFL Description Visible Fault Locator Description The Visible Fault Locator VFL is a stabilized fiber optic laser source that emits visible red light at 650nm lts intended function is to allow an operator to identify fibers or find the exact location of a break micro bend or other discontinuity in a fiber optic cable As the radiation is visible light emanating from a break or micro bend enables the user to locate the exact position of a fault even at very short distances that would not be detectable by other means It is also useful for identifying a particular fiber in a cable by exciting the fiber to be located with visible radiation 16
28. distance location that the event occurs in the respective unit of measure Field Descriptions Continued SPLICE Event Loss Event Loss where a positive number is the amount of loss and a negative number would be indicating a gain This is a settable threshold for the Pass Fail feature 2POINT 2 Point Loss Point Loss which is measured from the end of the dead zone of the previous event to the beginning of current event DB KM_ dB Loss Per Km Kf dB per Kilometer if in KM unit of measure and DB KF if in Kilo Feet unit of measure This is the calculated loss per Km or Kf from the end of the dead zone of the previous event to the beginning of the current event TYPE Event Type ORL Event Type is the type of event or the ORL measurement If the event is no reflection splc will be displayed and if the event contains a reflection the ORL value will be displayed This is a settable threshold for the Pass Fail feature E End Event The bottom row of the table is the loss and distance information as it pertains to the entire fiber link KM column is the end of fiber distance measurement Splice column is not used 2 Point is the measurement from the origin OTDR to the determined end of fiber in the KM column The dB km column is that measurement for the entire link and in the Type column Link will be displayed PRO CW8 SM35 Users Guide Revision A 3 2012 29 PR wj 9 4 Event Sensitivity Level There are three levels of sensit
29. ecks test condi AutoTest MR tions and starts a scan at the wavelength selected by the user but allows the OTDR to determine the pulse width and range parameters The AutoTest button is also used operate the construction mode The first time this button is selected in a user session a dialog box will be displayed asking the user to choose between range finger and construction mode If during a user session it is desired to change the value of this button holding it down for greater than one second will recall the selection dialog back to the screen allowing the user to change the function of the button Toggles between the Trace Mode where the focus of the Scroll Wheel and the Select Button are on the active cursor and the Menu mode where the Scroll Wheel moves through the Soft Key Menu and the Side Icon Bar Menu Toggles between A and B as the active cursors Selects the Zoom level each press increments through the levels of 1x 2x 4x 8x 16x and 32x Zoom While in Trace Mode the Select button will move the Active cursor to the next event While in Menu Mode the Select button actuates highlighted item While in Trace Graph Mode the capacitive scroll wheel moves the A and B cursors While in Menu Mode it highlights soft keys and icons and while in Table Mode it highlights files and events PRO CW8 SM35 Users Guide Revision A 3 2012 17 PRE 8 2 OTDR Display Trace display B 9 7260 i Ourscr B cursor Zoom
30. ed file Files stored with the Save soft key will take the base name of the last named file To start a new set of scans with a new base file name enter the menu mode while the first scan is displayed Scroll to the desired storage location for the first scan of the project Press the Menu button scroll to the Name soft key and press Select The storage location will display a black box with a OSA extension Use the Scroll Wheel to cycle through the avail able characters The available characters are space 0 9 A Z and a z Press Select to enter the character and move to the next character Once the desire file name is in place press the Menu button and Save Changes or Discard Changes will be displayed in the soft key bar Scroll to highlight Save Changes and press the Select button to complete the action PRO CW8 SM35 Users Guide Revision A 3 2012 45 PR wj Note The file name is formatted as xxxxxxxx OSA 8 3 style The file storage system uses the eighth sev enth then the sixth position to make the file name unique with an identifier digit Therefore depending on how many files need to be saved for the group of test it may be best to only use 5 6 or 7 characters for the file name For example If a file name of bbbbbbb OSA was give to the first scan when the following scans are saved they will be named bbbbbbb0 0SA bbbbbbb1 0SA bbbbbbb2 OSA and so on In this case if there were more then eleven scans the next name would be b
31. es the difference in vertical height between where the A and B cursors cross the trace to determine the amount of loss in that section of fiber dB Km The dB Km dB Kf loss method takes the 2 Point loss in dB and divides by the distance between the cursors in Kilometers Kilo feet For accurate dB Km dB Kf loss measurements the two cursors must be on level back scatter points at least 100m apart NA will be shown for distances that are too short Splice Loss Splice Loss method is meant to be used in noisy environments when it is difficult to attain an LSA area that lays flat on the back scatter before and after the cursor See section 7 8 Setting Splice Loss Measurement Areas This method takes an average of the selected points before and after the active cursor and uses this average to make a good estimation of the event loss This is an estimation but this method may be more accurate than LSA Splice Loss method in noisy environments Least Squares Approximation LSA Least Squares Approximation LSA Splice loss method gives the user a visual aid in setting splice loss areas The splice loss lines must be set to overlay the backscatter of a trace without over lapping any other events The LSA areas are set properly when the LSA visualization lines overlay the back scatter sections of the trace before and after the event This method can be more accurate by affording the ability to see the slope of the splice loss areas however it can als
32. for factory use I Indicates the charge status of the batteries When operating on AC power an AC Battery Icons aci plug will be displayed next to the battery PRO CW8 SM35 Users Guide Revision A 3 2012 13 PRE 6 3 Icon Definitions continued LTS Icons Help Feature Accesses the help files TS poste di JE dBm dB Used to set measurement unit to dBm or dB Calibration This is reserved for factory use Returns the user to the Home Menu Indicates the charge status of the batteries When operating on AC power an AC Battery Icons i plug will be displayed next to the battery PRE 14 PRO CW8 SM35 Users Guide Revision A 3 2012 7 0 General Features and Setup 7 1 General Features Battery Level Power Indicator The bottom right hand corner of the screen shows the battery level indicator In the final hour of operation the battery will change to red A warning indicator will sound a few minutes before the instrument automatically turns off An AC plug will be displayed next to the indicator bar if the unit is operating with the AC power supply charger There is also a red charge light in the top right corner of the front panel This will glow red when the unit is charging Caution Ensure the unit is turned off before plugging or unplugging the AC power supply charger USB Flash Drive Located on the bottom panel is the USB Flash Drive port Scan file and Scope files may be downloaded the external memory device Scree
33. h Save highlighted in the dropdown menu press select again Use the scroll wheel to change the highlighted character With the desired character displayed press Select to enter that character and the next character will be highlighted Continue until the desired file name is entered and press the Menu button Use the scroll wheel to highlight Cancel Redo or Save and press Select PRO CW8 SM35 Users Guide Revision A 3 2012 31 PRE 10 4 Renaming a Trace Highlight the file to be renamed using the scroll wheel Press the Menu button and scroll to highlight the Edit tab Press Select and with Rename highlighted in the dropdown menu press select again To leave a character unchanged simply press Select on the highlighted character To change a character use the scroll wheel to make the change and press select with the desired character displayed Continue until the name is entered press the Menu button scroll to select Save Changes or Discard Changes and press Select 10 5 Viewing Saved Trace To view a saved trace from internal memory use the scroll wheel to highlight the desired trace and press the Se lect button The OTDR will revert to the trace view with the selected trace displayed and directly below the trace will be the trace name Load located in the File dropdown menu may also be used to load a trace to the trace screen With the desired trace highlighted press menu scroll to the File tab press select use the scroll wheel to h
34. ighlight Load and press Select 10 6 Dual Trace Note To compare two traces they must have the same range and resolution settings With a trace on the display enter the file management highlight the trace to be placed in the background press the Menu button scroll to the File tab highlighted press Select scroll to Dual on the dropdown menu and press select again Both traces will now be displayed The primary or first trace loaded is the black trace and the sec ondary trace is the green trace All values displayed are the values associated with the primary trace If the trace for the background does not have the same range or resolution as the main trace a range mismatch message will be displayed Press the Select button to clear the message To exit the Dual Trace mode start a new scan or open a new main trace from file management 10 7 Marking Traces for Mass Coping and Deleting Scroll to highlight the first trace to be copied or deleted Press the Menu button scroll to the Mark tab and press Select To mark 1 or 2 files for mass copying press the Select button and the highlighted trace will be displayed in red font Pressing select again will mark the highlighted trace and the next trace will be highlighted The highlighted file is not marked Only those files in displayed in red are marked To mark a large number of files use the scroll wheel Scrolling down clockwise will mark a file and scrolling up counter clockwise will un
35. inants around the fragile optical and electrical connectors and the glass display Use a mild cleaning agent and damp soft cloth to clean up the panels and the outside case See the maintenance section to clean the optical connector NEVER open the instrument for cleaning Return to the factory for servicing if necessary Display This units is equipped with a 4 color TFT display Key Pad The FTE7800 is equipped with a 7 button key pad For a full description of functions please see the section of the manual that is dedicated to function being operated Scroll Wheel The scroll wheel is used to navigate through menus move cursors and make adjustments to settings 6 2 Physical Front Panel Charge Indicator PS TT Scroll Wheel Fig 6 1 PRE 10 PRO CW8 SM35 Users Guide Revision A 3 2012 Top Plate CWDM PORT Power Meter PORT Power Meter Visible gt Fault Locator ulti Mode agle Mode fe VFL PORT Tol Teil OTDR Port Bottom Plate Power Jack USB Flash USB Flash a 13 6 VDC E Vid Probe Video Probe Port USB PC Port Fig 6 3 6 3 Home Screen Visual Fault Locator Button Optical Spectrum Analyzer Button Loss Test Set Button Video Scope Button Optical Time Domain Reflectometer Button Battery Level Indicator Version Number PRO CW8 SM35 Users Guide Revision A 3 2012 11 PRE 6 3 Icon Definitions The list below and on the next page contain the icons fo
36. ion Continued selecting of recall will cycle through any stored scans and when the last stored scan is reached continued selection will start back at the first occupied storage location Press the Menu button to return to the scan mode PRO CW8 SM35 Users Guide Revision A 3 2012 43 PR w 14 0 File Management The OSA has the capability to store up to 1000 scans Once stored these files may be copied to a PC via a USB cable or copied to a USB flash drive To enter file management press the Menu button scroll to the File Manage ment icon and press the select button The files are listed in order of file storage position with an xxxxxxxx OSA 8 3 naming convention Use the Scroll Wheel to move from one stored scan to another As a file is highlighted the time and date stamp are displayed with total and peak power information and the number of channels mea sured There is also a preview map of the scan displayed 14 1 File Management Display Copy Files w Name Rename Mark USB PC Port Copy Files File File Exit File w USB Delete Access Management Flash Port File USB Flash _ Fett Cony FC copy USE flame pel ffark USE Defaulti OSAallDate June Fth 2012 Pete Time 2 54 PI 5 Total Pow r 65 46 dem Due aa a a Da Os EN fe i D i mi J SS E ee SSS Pa EET ae ECE aol CE GE CE Gre E Cie ES e airh Al CO 1 File Storage File Highlighted Scan Highlighted Position Name Information S
37. isplay Trace Measurements Trace Parameters OTDR Display with Menu Open Chapter 8 3 8 4 8 5 8 6 8 8 8 8 9 8 10 9 Event Analysis 9 1 9 2 9 3 Table of Contents Continued OTDR Tools Menu Resolution Unit of Measure Cursor Lock Loss Mode Splice Loss Least Squares Approximation LSA Enter Calibration Auto Test Range Finder Construction Mode Set Wavelengths Set Tests Parameters Set File Name Set Default Notes Conduct Test Manual Scan Settings Resolution Index of Refractions IOR Wavelengths Average AVG Pulse Width Range Viewing a Trace Zoom Zoom Bar Cursor Movement Cursor Lock Unit of Measure Loss Measurements 2 Point Average dB Km Splice Loss Least Squares Approximation Setting Splice Loss Measurement Areas Quick Save Recall Quick Save Quick Recall Enter Event Analysis Mode Event Analysis table Event Table Field Descriptions Event Number Pass Field P F Event Location KM Event Loss SPLICE 2 Point Loss 2POINT dB Loss per KM KF or MI DB KM Event Type ORL TYPE End Event E 9 4 Event Sensitivity Level 9 5 Pass Fail Settings PAGE Chapter Continued 10 FINORA SMERE ira ici RE ii ii ara 10 1 File Management Display 10 2 Entering Exiting File Magement 10 3 Saving a Trace 10 4 Renaming a Trace 10 5 Viewing a Saved Trace 10 6 Dual Trace 10 7 Marking Traces for Mass Copy and Deleting 10 8 Copying Traces 10 9 Deleting Traces 10 10 Accessing Flash Drive
38. ity of network distance and loss measurements Also this instrument includes the standard capabilities of the stabilized singlemode light source with autowave capability the match ing autowave broadband power meter to complete the Loss Test Set LTS function a visible fault locator VFL source for nearby fault isolation and fiber identification and the video scope option for end face analysis New to the PRO 8CW SM35 is the inclusion of the 8 channel ITU grid multi spectrum OSA power analyzer for simultaneous measurement of the upper 8 CWDM wavelengths utilized in the latest high bandwidth networks The multi tasker provides a startup menu to select from the OTDR VFL LTS SCOPE and OSA function immediately upon energizing This feature is coupled to each instrument for immediate analysis of impor tant features of your link Before connecting the instrument to your fiber under test it is good practice to examine the optical patch connectors with the optional high resolution 200x or 400x video scope probe and collect an image to attach to your link documentation For basic link analysis the OTDR can then be connected and an autotest can immediately provide link loss and distance results on single mode fiber at the popular 1310nm and 1550nm wavelengths The construction mode can be selected to automatically collect and file both fiber signatures The on board Loss Test Set completes the standard package of documented results necessary to com mis
39. ivity while in the event table The sensitivity is set via the Sense soft key Press the Menu button and Scroll Wheel to highlight the Sense key Press the Select button to cycle through Lo Low for event with loss as low as approximately 0 5dB Me Medium with events with loss down to approximately 0 2dB and Hi for events with loss as low as approximately 0 1dB Medium and High sensitivity settings should be used for high signal level low noise long pulse averaged traces 9 5 Pass Fail Settings Splice ORL and Link are all settable thresholds for Pass Fail purposes To set the thresholds press the Menu button scroll to highlight the desired soft key press the Select button and use the Scroll Wheel to reach the de sired value Press Select button again to lock in the settings If the trace fails any of the three thresholds a red X will be displayed in the P F column and the suspect threshold value will be displayed in red Examples Splice If a splice needs to be less then 1dB set the threshold to lt 1 0 If 1 0 would be accepted set threshold to 1 01db ORL Ifan ORL needs to be less then 50dB set the threshold to lt 50 If 50dB is acceptable set the threshold to lt 49 Link If the link loss needs to be less then 20dB set the threshold to lt 20 If 20db link loss is acceptable set the threshold to lt 21 End This threshold setting is the first test to determine the end of fiber If set to 3dB the first
40. ize the light source Enter the Menu mode scroll to Ref icon and press the Select button The reference is now stored in nonvolatile memory and displayed at the bottom right of the display The units of the display will now change to dB Subsequent readings will now be displayed in terms of dB relative to the stored reference value A reference memory location is available for each selected wavelength A reference reading is required to change to dB measurement from dBm measurements Remove the connector from the power meter port and place the fiber under test inline between the reference cord and the power meter port The reading displayed will be the loss of the fiber under test relative to the reference Ensure the unit is not in Menu mode and press the Select button to store the measurement Stored power measurements may be recalled by moving the Scroll Wheel and the File Selector Screen will be dis played If no buttons are press for 5 seconds after entering the File Selector mode the unit will revert to the test mode The Scan button may also be pressed to re enter test mode 12 2 Autotest Mode To use the Auto Test feature connect the fiber to be tested to a compatible test set The unit being used as the source should be set to Autotest If Two Quad OTDRs are being used only the wavelengths to be tested should be selected as sources by entering the Wavelength Lambda selection menu Only the wavelengths that are energized will be displayed on
41. lated during the length of a scan BPR O 42 PRO CW8 SM35 Users Guide Revision A 3 2012 13 5 Unit of Measure The units of measure are wavelength or frequency The Lambda icon is used to change the unit of measure between nanometers or terahertz This will change the A B span measurement to the left of the A icon and the measurements displayed for each cursor To change the unit of measure enter the menu mode by pressing the Menu button and scrolling to the Lambda icon Once highlighted pressing the Select button will toggle between nanometers or terahertz Press the Menu button again to return to the Scan Mode 13 6 Quick Save Recall A scan may easily be stored to memory by using the Save soft key To do this enter the menu mode scroll to the Save soft key and press the Select button The scan will be saved to the location indicated If that storage posi tion is full a dialog will be displayed with the options of overwriting the file storing to the next available location or canceling the command Use the scroll wheel to highlight the desired action and press Select The action will be complete and the display will return to the scan mode Any file saved with this method will use the base file name of the last manually entered file and increments the suffix by one To use the quick Recall feature enter the menu mode and scroll to the Recall soft key Pressing the Select button will recall the scan stored in the indicated storage locat
42. light the REF icon on the right side of the display Press step to set the reference Menu Press to exit the Menu mode To conduct a Manual Test If using the OTDR as the light source perform reference procedure as above and place fiber under test in line between the reference cord and the power meter port Ensure you are in Menu mode and Scroll to Source soft key Press O to cycle through the wavelengths and choose the wavelength to be tested Menu Press to exit Menu mode Press to store the measurement to the location indicated in the bottom left of the display PRO CW8 SM35 Users Guide Revision A 3 2012 to set the reference for that wavelength If a second wave length is going to be tested scroll back to the Source soft key and press to cycle to the next desired wavelength and repeat the To conduct an Auto Test Note Setting a reference in Auto Test mode is not necessary The source is modulated and a Refer ence of 3dBm 6dBm 1625 is assumed Connect fiber to be tested press the button and the light source will cycle to test each wave length the power meter will read the signal and hold test in temporary memory until the button is pressed and the test is stored into the memory location indicated at the bottom left corner of the display Ensure that the unit has cycled through all the desired wavelengths prior to pressing the select button Auto Test will be displayed at the bottom of the
43. lighted Note A loss measurement of is not empty if there is a wavelength displayed to the right That would be a null measurement An empty location is with no wavelength displayed to the right Measurements may also be deleted in the Quick File Locator With the storage location selected press the Menu button scroll to the Delete icon and press Select There is a time out on the Quick File Select If the display reverts to the test mode before the delete button is selected the file will not be deleted FREE SI 36 PRO CW8 SM35 Users Guide Revision A 3 2012 Lambda Wavelength Selection Highlighting and selecting the A Icon will display the Wavelength Selection menu Use the scroll wheel to highlight the wavelengths to be select for use with the light source and power meter and press the Select button to toggle them off and on The selected wavelengths will be the only wavelengths tested auto test and the only ones avail able when cycling through the light source and power meter soft keys Highlight Save Selection at the bottom of the menu and press the Select button to save the setting and return to the Loss Lest Set mode File Download File Download is used to send the save Loss Test to a PC Once the PRO CW8 SM35A is connected to a com puter with the certification software running enter the menu mode and highlight the File Download icon When directed to do so press the Select button to immediately start a do
44. n Shots are downloaded directly to the USB flash drive Note Flash drives of 4 GB or less are supported USB PC Located on the bottom panel is the USB PC port which may be used to connect the Optical Spectrum Analyzer to a computer to download stored data for analysis with the supplied Windows compatible software 7 2 Setup Menu The following features are accessed from the setup menu To access the setup menu press the Menu button while on the Home Screen To exit the setup menu at any time press the Menu button again set Date and time The PRO CW8 SM35 applies a time date stamp to the saved Scans The date is configured MM DD YY and the time is a 24 hour format set in the eastern time zone To change the data and time Press the Menu button to enter the menu mode scroll to the Clock icon and press the Select button The dialog box with the settings will be displayed Use the scroll wheel to change each segment use the Select button to move between segments and to Save Redo Cancel Use the scroll wheel to select Save Redo or Cancel then press the Select button again to complete setting the date and time This setting has a memory of approximately one month of no instrument activity To recharge the memory turn the instrument on for 5 minutes per month or during the monthly battery charge if the unit is not used for a long period PRO CW8 SM35 Users Guide Revision A 3 2012 15 PRE 7 2 Setup Menu Continued Brightness To set
45. nated or damaged The connection to the PRO CW8 SM35 is a physical contact type of connection and dirty or damaged connectors may impair the instruments capabilities at minimum and at worst result in the need to return this unit to the factory for expensive repairs Prior to making any connection to the unit ensure that all proper cleaning procedures have been followed Use UPC Finish Connectors Only Caution The PRO CW8 SM35 CWDM maximum power per channel is 5dBm and the Maximum Composite power is 23dBm Attempting to test greater power levels will cause damage to this instrument PRO CW8 SM35 Users Guide Revision A 3 2012 3 Pr w Thank you for purchasing the PRO 8CW SM35 multi tasker the world s first handheld test and measure ment product dedicated to assist you with installation commissioning and maintenance of the next gen fiber optic networks If you re working with upgrading an overburdened network with additional optical channels or installing the latest generation of multichannel high bandwidth fiber links the multi tasker will assist with meeting your test and measurement needs quickly and efficiently The PRO 8CW SM35 includes the latest extended dynamic range high resolution Optical Time Domain Reflectometer OTDR technologies as the base platform As with all of PRO s newest developments we have incorporated the standard features including Instant on autotest and immediate event analysis for fast and trouble free visibil
46. o be tested by pressing the Menu button scrolling to the Tools icon and pressing Select Scroll to the Set Wavelength Filter tool and press Select Grayed out wavelengths are turned off The wave lengths in black text are active To select wavelengths scroll to highlight the wavelength and press the Select But ton To complete the process scroll to Save and press select Press Menu again to close the Tools dialogue box set Test Parameters Check the Average Time Pulse Width and Range to ensure they are set properly Refer to section 8 5 for instruc tions on setting these parameters Note Real Time is not recommended as an averaging time for Construction mode Set File Name It is necessary to set the base file name prior to starting the test To establish the file name press the Menu button and scroll to the File Management icon and press Select Scroll to an empty file location and press Se lect Name the file by using the scroll wheel to display the desired letter or number and press Select to move to the next Character Do not press select to enter the last character Once it is displayed press the Menu button and Save Changes soft key will be highlight press Select or use the Scroll Wheel to select Discard Changes and press Select All future files will use the new base file name until it is change The file that was just created may be deleted if desire by following the procedures in section 10 9 Set Default Notes To enter defaul
47. o supply a reading with greater error if not used properly Please see section 8 9 for examples of setting LSA areas In Noisy environments the LSA Lines will have an exaggerated movement making the Basic Splice Loss Measurement potentially more accurate PRO CW8 SM35 Users Guide Revision A 3 2012 25 PR wj 8 9 Setting Splice Loss Measurement Areas The splice loss measurement areas around the cursors are adjustable This feature is used for both Basic Splice Loss and LSA Splice Loss To access this feature press the Menu button and scroll to the SPL icon An arrow will be displayed above the point of the measurement area to be adjusted with the Scroll Wheel There are three points that may be adjusted The left hand most point of the measurement area before the cursor and the left or right hand point of the area after the cursor LSA Set Too Early The LSA area and cursor are set too early The right most green LSA indicator line is not over lay ing the back scatter of the trace properly LSA Set Too Late The LSA area and cursor are set too late The left most green LSA indicator line is not over laying the back scatter of the trace Proper LSA Setting The LSA area and cursor are set properly The green LSA indicator line is over laying the back scatter of the trace properly Fig 8 9 BR O 26 PRO CW8 SM35 Users Guide Revision A 3 2012 8 10 Quick Save Recall Quick Save To use quick save press the Menu button
48. olution Enter the Menu mode scroll to highlight Tools icon and press Select The resolution tool should be highlighted Use the Select button to toggle between Low and High This resolution feature affects the ranges of 4km and 16km At low resolution 4km range data points are meter apart and at high resolution the data points are 1 8 meter apart At 16km range the low resolution date points are 1 meter apart and at high resolution the data point are1 8 meter apart Note The resolution setting does affect speed and internal storage capability At the 16km range high resolu tion vs low resolution the trace could take up to 8 times longer to complete and trace file sizes could be up to 8 times larger decreasing file storage capability High resolution mode at the 4km range could cause the trace time to double as well as the file size To determine the amount of trace memory avail able enter file management scroll to the view tab and select Stats from the drop down menu This will show the number of traces saved and the number of traces that can still be saved in the internal memory Note To determine the amount of trace memory available enter file management scroll to the view tab and select Stats from the drop down menu This will show the number of traces saved and the number of traces that can still be saved in the internal memory Index of refraction IOR It is necessary to have the Index of Refraction set as close
49. re Unplug external power supply and ensure the unit is turned off Carefully remove unit from protective boot and remove the two screws from top plate and bottom plates that retain the back cover Carefully remove back cover and remove the two screws that hold the battery covers in place Replace only with 8 high quality AA NiMH bat teries Do not use batteries that are rated at less the 2500mAh If you install NiMH batteries that are dead or less than 1 volt each charge these batteries for one 1 hour before using the unit For maintenance batteries require a monthly periodic recharge Warning To Prevent Fire or Shock Hazard Do not install battery types other than those specified by the manufacturer Do not use the charger without the batteries installed Do not expose the battery charger to rain or excessive moisture Do not use the AC adapter when there are signs of damage to the enclosure or cord Ensure that you are using the correct charger for the local line voltage VV VV V WV Do not use any other charger than the one provided with this instrument Failure to follow these caution statements may void the warranty of this equipment PRO CW8 SM35 Users Guide Revision A 3 2012 9 PR w 6 1 Instrument Description Insrument Enclosure The FTE7800 is packaged in a rugged aluminum housing which is further protected with a rubberized boot Although the front panel is weather resistant care must be taken to avoid liquids and contam
50. s the user a visual aid in setting splice loss areas The splice loss lines must be set to overlay the backscatter of a trace without over lapping any other events The LSA areas are set properly when the LSA visualization lines overlay the back scatter sections of the trace before and after the event This method can be more accurate by affording the ability to see the slope of the splice loss areas however it can also supply a reading with greater error if not used properly Please see Fig 8 7 8 8 and 8 9 for examples of LSA settings In Noisy environments the LSA Lines will have an exaggerated movement making the Basic Splice Loss Measure ment potentially more accurate The Splice loss measurement may also be disabled if these measurements are not require for testing Enter Calibration This tool is for factory use 8 4 Auto Test Warning Before connecting to a patch cord or fiber under test be certain the fiber has no active optical sources or instruments connected to the other end Skin or eye damage could result from other high power sources e g EDFAs or instrument damage could occur voiding the warranty Warning Clean connector thoroughly prior to connection to the appropriate port of the OTDR Failure to ensure the connectors used with the OTDR are properly cleaned can result in poor launch conditions at the mini mum or damage that requires the unit be returned to the factory for repair Note The first time Autotest is press
51. scroll to the Save soft key and press the Select button The trace will be saved to the storage location shown The file will be stored with the same base file name as the last save stored trace If the storage location indicated already contains a file the user will be prompted to either Over write the location Save to the Next available location or Cancel the action Scroll to the desired action and press Select The storage location will increment accordingly Note There are sample traces stored on the OTDR at the factory These traces are saved in the with the base file name of default uick Recall To quickly recall a trace press Menu scroll to the Recall soft key and press the Select button to display the trace that is saved in the memory location indicated and the next memory location with a trace will be displayed PRO CW8 SM35 Users Guide Revision A 3 2012 27 BER w 9 0 Event Analysis NOTE When using the event table it is necessary to keep in mind that event analysis provides approximate loss and distance measurements to quickly assist in network evaluation Automatic detection results are not guaranteed and have their limits possibly causing erroneous readings or detection failure User inter action by interfacing with the trace display is recommended for final qualitative and quantitative analysis 9 1 Enter Event Analysis Mode To open the event analysis table press the Menu button scroll to highlight
52. scroll wheel to highlight Cancel or Confirm Delete and press Select 9 10 Adding Default Notes A note may be saved with a trace With a file highlighted entering a note will save that note for that one trace With an empty file storage position highlighted enter a note and this note will be stored with all traces until the note is changed or deleted To enter notes while in the file management screen press the Menu button scroll to the Edit tab and press Select Use the scroll wheel to choose Notes from the dropdown menu and press Select The first character of the notes field will be highlighted Use the scroll wheel to choose a character and press Select To erase a character or enter a space scroll back to the blank which is the first character available If a mistake is made it may be best to exit the Note field by pressing the Menu button and reenter the notes field from the Edit dropdown Once you have completed the note press Menu to exit 10 10 Accessing Flash Drive To access the flash drive while in file management press the Menu Button and scroll to the View tab press Se lect and choose USB Stick from the dropdown menu To return to the internal memory press the Menu button return to the View dropdown and choose Internal All of the Tab functions available for the internal memory are also available for the Flash drive 10 11 Internal Memory Statistics The amount of storage available in the onboard memory is found in the
53. sion a system or can be utilized for pass fail analysis of network power throughput The advanced autowave feature is a must to improve the efficiency and reliability of measuring at both 1310nm and 1550nm radiation but as a broadband power meter it is calibrated for system end to end loss analysis at all popular fiber optic wavelengths with your sources For commissioning or troubleshooting a multi wavelength system the 8 channel CWDM can be utilized at various points to detect proper power levels from each source and appropriate add drop connectivity set tings at each adjustable node on the network The channel analyzer provides immediate real time power measurement results of all 8 channels from 1471nm to 1611nm simultaneously and also analyzes and displays statistical measurements at each ITU grid channel Of course documentation of all these results is accomplished at the push of a button PRO has many advanced measuring instruments for use with multiple wavelength multimode and single mode systems from CWDM wavelength OTDR analyzers DWDM MiniOSA devices DWDM Tunable Laser sources Variable Optical Attenuators Loss Test Sets Video Scopes as well as PON OTDRs with 1625nm active out of band coverage Please enjoy the use of your new PRO 8CW SM35 multi tasker and again thank you for considering PRO Please follow the next section s simple startup instruction to get right to work with your PRO test and measurement equipment PRE 4 PRO CW8 S
54. t notes for trace files enter the File management as above and scroll to any empty location Press the Menu button scroll to the Notes soft key and press Select The first Character of the note box is highlighted Use the Scroll Wheel to select the desired character and press select Continue on until the note is complete To erase the characters and move forward use the blank To quickly return to the beginning of a note press the Menu button and then the Select button on the Notes soft key To exit the Notes box press the Menu button This note will now be the default note for all traces until it is change PRO CW8 SM35 Users Guide Revision A 3 2012 21 PRE 8 4 Auto Test Continued Conduct Tests Connect a fiber to the proper test port and press the Autotest button The OTDR will conduct the test at the first wavelength and store the trace in temporary memory using the base file name given with default notes attached The second wavelength is then started and once complete the traces stored to memory and then both traces are displayed for review Disconnect the fiber connect the next fiber and press Autotest The two tests will be completed stored and displayed Continue on until all fibers are tested 8 5 Manual Scan Settings After powering on the OTDR Enter the menu mode by pressing the Menu button and scroll to the parameter keys to set all the necessary parameters to the appropriate values These parameters include Res
55. the Mode soft key and press select 12 5 File Transfer To transfer files from the Loss Test Set to the computer start the certification software Connect the OTDR to the computer with the supplied USB cable Select Loss Test Set from the applications tabs To start the memory download enter Menu mode on the OTDR highlight the File Download Icon and press Select The download progress will be indicated by the UPLOAD counter in the bottom left corner of the LTS display and in the top right corner of the software screen PRO CW8 SM35 Users Guide Revision A 3 2012 39 Pr w 13 0 Channel Analyzer Operation 13 1 Key Pad Operation Power button turns the unit On and Off Hold for 1 second Auto Test Scan button starts or stop a scan and resets the table of data Scan Select Maize This button is disabled for 8 Channel CWDM Channel Ana lyzer Fig 13 1 ented Menu toggles the focus of the Scroll Wheel between the Scan Mode and the Menu Mode In Scan mode the focus of the Scroll Wheel and the Select Button are on the active cursor In Menu Mode the Scroll Wheel moves through the Soft Key Menu and the Side Icon Bar Toggles between A and B as the active cursors zati This button is disabled for 8 Channel CWDM Channel Analyzer The Select button actuates the highlighted item While in Scan Mode the scroll wheel moves the cursors While in Menu Mode the scroll wheel is used to move through the soft ke
56. the PRO CW8 SM35 to the factory for expensive repairs Prior to making any connection to the unit ensure that all proper cleaning procedures have been followed Use UPC Finish Connectors Only Start a Scan Ensure the connector to be inserted into the optical port of the channel analyzer is clean and not damaged Insert the connector and press the Scan button to start a scan The wavelength frequency and power are shown at the top right corner of the display in blue for the A cursor and red for the B cursor Just below the power reading for the cursors is the deviation between the power levels of the channels selected by the cursors and below that is the total power measurement Refer to Figure 13 3 Total power is the power that is present on the fiber The total power measurement is displayed in dBm 13 4 Channel AnalyzerTable The table located in the bottom right of the display indicates power levels for the 8 CWDM channels listed 1 8 with 1471nm being number one and 1611nm being number eight The power level displayed is controlled by the Power soft key at the top right of the display There are four options when displaying power Show Power indicates the real time power of each channel There are also Show Min Show Max and Show Avg options To select the desired power level to be show press the Menu button scroll to the Show XXX soft key and press Select to cycle through the four choices These measurements are real time and accumu
57. the zoom screen where all stored test for a memory location are display There can be up to 4 test stored per location Zoom The Select Button will store all measurements in the temporary memory to the storage position shown the lower left corner of the display while in the Test Mode and while in the Menu mode it will activate an icon item or soft key The scroll wheel is only used when in menu mode while in Live Scan mode When in File View mode it is used to move through soft keys and icons in Menu mode and scrolls though the stored file when not in menu mode PR w 34 PRO CW8 SM35 Users Guide Revision A 3 2012 11 3 LTS Displays LTS Live Scan Mode Soft Key Source Power Meter Light Source Wavelength Power Meter Wavelength Loss Value Power Next Storage Location Auto Test Indicator Fig 11 2 LTS File View Screen SOUTCE Power Meter i i TE ii e Pe i J Hanm Stored Wavelength of Displayed Test Stored Value a F F Fa STORE Storage Location Fig 11 3 PRO CW8 SM35 Users Guide Revision A 3 2012 35 Mod Out Exit to Main Menu Stored Reference of Displayed PM Wavelength Pod Out FILE VIEW Stored Reference of Displayed test PRO 11 4 LTS Soft Key Operation source Enter the Menu mode and scroll to highlight the Source soft key Press the Select button to cycle through the available wavelengths See Lambda wavelength icon information below The displayed source wavelength is the active source
58. und on the PRO CW8 SM35 units They control features and functions and allow the user to set testing parameters This table gives the name and a brief explanation of each More detailed explanations will be found in later sections of this chapter and in chapters to follow Setup Icons BI ein fwar E I STE OTDR Icons DE Help Feature Accesses the help files LSA Adjustments Used to adjust the LSA splice loss areas H File Management Used to enter the File Management G The Tool Box contains equipment features and operational parameters that are Tool Box seldom changed OTDR Toolbox Icons Used to set the OTDR to Low or High Resolution FS Unit of Measure Use to set the Unit of Measure to Kilometers Kilofeet or Miles Used to Lock the A and B cursors movement BB Loss Mode Used to Select Splice or LSA loss modes or to disable the loss mode Calibration This is reserved for factory use PRE 12 PRO CW8 SM35 Users Guide Revision A 3 2012 6 3 Icon Definitions continued OTDR Icons continued E ET TT E Indicates the charge status of the batteries When operating on AC power an AC T Battery Icons plug will be displayed next to the battery Channel Analyzer Icons Help Feature Accesses the help files File Management Used to enter the File Management Used to change channel measurements to wavelength or frequency N Returns the user to the Home Menu CAL Calibration This is reserved
59. upon power up a dialog box will be display to set the function of the but ton Use the scroll wheel to move between the Range Finder and Construction Mode Press the Select button once the desired function is highlighted To change the function once set in a user session press and hold the Autotest button and the dialogue box will be displayed again FREE SI 20 PRO CW8 SM35 Users Guide Revision A 3 2012 Range Finder This is a useful feature when the approximate length of the fiber to be tested is unknown The Range Finder feature tests at the wavelength selected by the user To set the wavelength press the Menu button scroll to the Lambda icon and use the Select button to cycle to the desired wavelength Press the Autotest button the unit will set the average time to short starts a scan and flashes Auto in the pulse width and range parameters When Auto stops flashing the unit has set the pulse width and range then completes the test and displays the trace Construction Mode This is useful when a large number of fibers need to be tested with the same settings at multiple wavelengths To operate in Construction mode set the Autotest button to construction mode in the manner described above The Construction Mode tests up to two wavelengths at one time displays the two traces and saves the traces to the next two available storage locations Follow these procedures to test in Construction mode set Wavelengths Set the wavelengths t
60. ursor movement The active cursor is shown as a solid line while the inactive cursor is a dashed line When in the Menu mode an A or B will be displayed next to the Cursor soft key as in indication Press the A B button to toggle between the cursors When in the Menu mode pressing select while the Cursor soft key is highlighted will also toggle the active cursor Cursor Lock The cursors may be lock for accurate measurements To lock the cursors press the Menu button scroll to the Tools icon and press the Select button Scroll to the Cursor Lock icon and press Select to toggle the lock cursor mode on and off In the lock cursor mode with the A cursor as the active cursor both A and B cursors move and with the B cursor as the active cursor the B cursor will move independently in order to set the distance between the two cursors Note To quickly move the active cursor to the next event press the Select button while the unit is in the trace view mode BPR O 24 PRO CW8 SM35 Users Guide Revision A 3 2012 8 7 Unit of Measure The distance unit of measure may be either displayed in Kilometer Km Kilo feet Kf or Mile Mi To change the setting enter the menu mode scroll to highlight the Tools icon and press the Select button Scroll to Unit of Measure icon and use the Select button to toggle between Km Kf or Mi Press the Menu button to return to the trace display 8 8 Loss Measurements 2 Point loss 2 Point loss method tak
61. use the Select button to toggle between Km Kf or Mi Press the Menu button to return to the trace display Cursor Lock The cursors may be lock for accurate measurements To lock the cursors press the Menu button scroll to the Tools icon and press the Select button Scroll to the Cursor Lock icon and press Select to toggle the lock cursor mode on and off In the lock cursor mode with the A cursor as the active cursor both A and B cursors move and with the B cursor as the active cursor the B cursor will move independently in order to set the distance between the two cursors PRO CW8 SM35 Users Guide Revision A 3 2012 19 PRE 8 3 OTDR Tools Menu continued Loss Mode Loss Mode setting allows the user to set the splice loss measurement to be displayed to either simple splice loss LSA least squared averaged or shut off this measurement to limit the amount of information on the display Splice Loss Splice Loss method is meant to be used in noisy environments when it is difficult to attain an LSA area that lays flat on the back scatter before and after the cursor See section 8 9 Setting Splice Loss Measurement Areas This method takes an average of the selected points before and after the active cursor and uses this average to make a good estimation of the event loss This is an estimation but this method may be more accurate than LSA Splice Loss method in noisy environments Least Squares Approximation LSA LSA Splice loss method give
62. wnload to the computer via the USB cable Press the Menu button to return to the test mode Set Reference This icon is used to set the reference for relative loss measurements dBm dB This icon is used to toggle the power meter from absolute power referenced by dBm and relative power refer enced by dB Calibration CAL This tool is for factory use only Exiting Applications Press the Menu button scroll to the Home icon and press Select PRO CW8 SM35 Users Guide Revision A 3 2012 37 PR w 12 0 Loss Test Set Operation 12 1 Power Meter Measurements Power Measurements With the PRO CW8 SM35 in Live Scan connect the fiber carrying the optical power to be measured to the Power Meter detector utilizing the appropriate adaptor Select the power meter wavelength that matches the wavelength of the light being measured The power reading will now indicate the optical power in units of dBm The power will display an out of range condition indicated by a series of four dashes on the display if the signal is greater than 5 or less than 77 dBm CATV versions are available upon request To save the power measurement to the storage location indicated below the STORE label press the Select button The memory location will auto increment to the next available memory location Relative Measurements To make a relative power measurement you must first save the reference power level To store a reference level attach reference cord s and energ
63. x 8x 16x and 32x The current level is indicated in the bottom right corner of the display with the values per division Press the Zoom button to cycle through the zoom levels When in the Menu mode pressing select while the Zoom soft key is highlighted will also cycle through the zoom levels PRO CW8 SM35 Users Guide Revision A 3 2012 23 BER w 8 6 Viewing a Trace continued Note The values per division change with each change of the zoom level and are indicated in the lower right corner of the display Zoom Bar The bottom most portion of the trace is a Zoom Bar This represents the entire range of the trace being viewed The green bar within the area represents the amount of the trace that is being viewed whiled the zoom func tion While in Zoom level 1x the green bar will fill the Zoom bar area meaning the entire range of the trace can be viewed and in Zoom level 2 the green bar will fill only half of the zoom bar area meaning half of the entire range of the trace can be viewed As the zoom levels increase the green zoom bar will decrease in size to indicate the amount of the trace that can be views at one time As a cursor is moved with the Scroll Wheel the green zoom bar moves to indicate what portion of the trace is being seen For example if the green bar is to the left of the zoom Area the beginning portion of the trace is being viewed and if the green bar is to the right of the zoom Area the end of the trace is being viewed C
64. ys and icons PR w 40 PRO CW8 SM35 Users Guide Revision A 3 2012 13 2 Channel Analyzer Display Displayed Power Indicator and Selector Active Cursor Quick Save Quick Recall Indicator and ft K Saeco Soft Key Soft Key Soft Keys Cursor A Save BBG Recall Gal Show Power Icon Bar Scan Measurements See Fig 8 3 A B Cursors dB Scale Channel Table Scan Status Indicator Channel Grid Numbers Values Fig 13 2 Displayed Scan Measurements foom Tx Cursor B Save 079 Recall 016 show Table A Cursor Wavelength Frequency and Power B Cursor Wavelength Frequency and Power A to B Deviation in dB Total Power PRO CW8 SM35 Users Guide Revision A 3 2012 41 PRE 13 3 Enter Channel Analyzer Function Enter the CWDM Channel Analyzer operation from the home screen by using the scroll wheel to highlight the OSA icon and press Select Warning Care should be taken as skin or eye damage could result from high power devices such as transmitters or EDFAs Caution The PRO CW8 SM35 Channel Analyzer is designed to test a total power of 23dBm Attempting to test a total power above 23dBm will cause damage to this instrument Caution Fiber optic connectors are easily contaminated or damaged The connection to the PRO CW8 SM35 is a physical contact type of connection and dirty or damaged connectors may impair the instruments capabilities at minimum and at worst result in the need to return

PRO-CW8-SM35 - Precision Rated Optics

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