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OP940-SW

IL Settings

• IL Pass Threshold

• IL Precision

• IL Dwell Time

RL Settings

• RL Pass Threshold

• DUT Length

• Scan Offset

• RL Dwell Time

Miscellaneous Settings

• Temperature Units

• Startup Mode

Additionally, the Status Mode displays the revision numbers for key firmware on the unit.

OP940 System Infor m ation
Fir m ware Version

Main Fir m ware = 481

UI Fir m ware = 101

Display Fir m ware = 102
IL Settings

ILA Pass Threshold = 0.21

ILB Pass Threshold = 0.22

IL Precision = 3

IL Dwell Ti me = 771
RL Settings

RLA Pass Threshold = -55.0

RLB Pass Threshold = -55.0

DUT Length = 1 - 100 m

Scan Offset = 0.0

RL Dwell Ti me = 771
Misc Settings

Temperature Units = Celsius

Startup Mode = ILRL

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Front Panel Operation

Status Mode

The Status Mode is a troubleshooting tool which displays the state of the various user-

configurable settings on the OP940. It can also be used to quickly check the unit’s settings

before beginning to test. The settings, which are displayed on this screen, are as follows:

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Содержание OP940-SW

Страница 1: ...Multichannel Insertion Loss Return Loss Meter OP940 SW Instruction Manual www optotest com 1 805 987 1700...

Страница 2: ...ntained in strict confidence No element or detail of this manual is to be spuriously used or disclosed without the express written permission of OptoTest Corporation All rights are reserved No part of...

Страница 3: ...OPM Mode 14 IL Mode 16 RL Mode 17 ILRL Mode 18 Dual ILRL Mode 19 Scan Mode 20 Scan Mode with OP725 23 IL Ref 24 RL Ref 25 Settings Mode 26 Status Mode 29 Multichannel Units 30 Bidirectional Functional...

Страница 4: ...w the IL and RL for up to two wavelengths simultaneously The color display coupled with user configurable pass fail green red settings make it extremely easy to qualify fiber optic patchcords for tele...

Страница 5: ...with the original shipment contact OptoTest of their nearest distributor Please retain the shipping container in case re shipment is required for any reason Damaged In Shipment All instruments are shi...

Страница 6: ...ss measurements and minimizing the amount of connections made to the front panel will limit the possibility of scratching or contaminating the front panel connector Warming up the OP940 For the OP940...

Страница 7: ...ge has been reached Linearity Photodetectors are by nature very linear over a wide range of optical input powers but the power meter electronics can affect the overall system linearity The power meter...

Страница 8: ...o acclimate to a changing environment In order to calibrate the instrument or to perform stable measurements the instrument should be acclimated for 15 minutes for each 5 C of temperature differential...

Страница 9: ...a small area detector hence the absolute power reading will be less than actual Return Loss Range The lower end of the return loss low return loss high reflection defines the level where the instrume...

Страница 10: ...is the temperature range in which the instrument will conform to the specifications after the specified warm up time Storage Temperature This is the temperature range at which the instrument can be st...

Страница 11: ...or Display Removeable Feet Control Buttons Home Button Source Connectors Remote Head Port BNC Remote Head Detector Removable Source Panels REMOTE HEAD PORT IL RL Test System OP940 Power Button Keyed N...

Страница 12: ...ch as OPM IL RL ILRL Dual ILRL Scan and Settings Buttons 4 and 5 will navigate backward and forward respectively through the pages of mode screens Pressing the H button on the Mode Select screen will...

Страница 13: ...s and Return Loss measurements for one wavelength at a time Both measurement types can be referenced from this screen as well Displays Insertion Loss and Return Loss measurements for two wavelengths a...

Страница 14: ...reference cycles and wavelength channel switching Button 5 will cycle through the pages of these procedures and options before wrapping back to the first page Pressing the H Button in an operation sc...

Страница 15: ...lly depict the measured power in terms of the current gain stage of the detector and whether the unit is measuring on the high or low end of that gain stage The unit by default operates in Auto Range...

Страница 16: ...measurement of the current optical power and stores it The unit will then measure the optical power relative to the reference power A loss in power will be displayed as a negative value Prevents the u...

Страница 17: ...for example 1310nm and 1550nm and consecutive measuring of insertion loss on components at both wavelengths IL measurements will be displayed as positive values References perfomed in this mode will...

Страница 18: ...Moves to the next reflection position and begins taking measurements at that point once reference is complete Displays on screen pass fail results based on Settings defined by the user in the Settings...

Страница 19: ...procedure Displays on screen pass fail results based on Settings defined by the user in the Settings mode Advances to the next page of options Returns to the Home Screen Page 1 ILRL Mode Page 1 Page...

Страница 20: ...o the IL Reference screen Navigates to the RL Reference screen Displays on screen pass fail results based on Settings defined by the user in the Settings mode Advances to the next page of options Retu...

Страница 21: ...e vertical axis are two markers one to indicate the location of the front panel and another to indicate the location of the on screen cursor The front panel marker will always be at 0 0m and can be us...

Страница 22: ...ll saturate the meter Switches the return loss source from high power to low power As with the gain stage setting High will be useful for detecting small reflections but will saturate the meter if use...

Страница 23: ...elp for this mode screen Advances to the next page of options Returns to the Home Screen Moves the on screen marker forward by 0 1m Moves the on screen marker backward by 0 1m Sets the first position...

Страница 24: ...es the displayed range forward by 10m Moves the displayed range backward by 10m Performs a single scan of displayed range Advances to the next page of options Returns to the Home Screen Page 3 Page 2...

Страница 25: ...to go back to the measurement screen first Advances to the next page of options Returns to the Mode Screen Page 1 Toggles the OP725 between A B and B A directions and updates the screen to reflect th...

Страница 26: ...ppropriate direction only in Bidirectional Mode Calculates the difference between the RL reference value and 14 7dB for each wavelength This option calculates the return loss correction for an open fl...

Страница 27: ...ressing the H button in a settings screen will bring the unit back to the Settings screen Meanwhile pressing H while in a screen devoted to a wavelength specific setting will bring the unit back to th...

Страница 28: ...r switching from a different wavelength channel or different kinds of measurements RL Pass Threshold is a wavelength specific setting which controls the pass fail criteria for return loss measurements...

Страница 29: ...lts Page 3 Startup Mode is a global setting which allows the operator to specify which Operation Mode to load each time the unit is powered on Enabling the external 2x2 switch controls will put the OP...

Страница 30: ...2 IL Settings ILA Pass Threshold 0 21 ILB Pass Threshold 0 22 IL Precision 3 IL Dwell Time 771 RL Settings RLA Pass Threshold 55 0 RLB Pass Threshold 55 0 DUT Length 1 100 m Scan Offset 0 0 RL Dwell T...

Страница 31: ...s IL Ref and Scan Mode the channel changing screen takes precedence and the screen which would normally come second on the single channel units gets moved to the third page of options OPM Mode is comp...

Страница 32: ...er to reference return loss using an open angle polished connector Displays on screen context help for this mode screen Page 3 Multichannel Units Front Panel Operation Multichannel Units On the RL Ref...

Страница 33: ...ach direction and will use the appropriate parameters when switching directions For example after referencing insertion loss in the forward direction the user would want to select the function to swit...

Страница 34: ...nstrument Select the desired mode screen such as ILRL and then select the RL Ref option On the proceeding screen select the Start RL Ref option The instrument will begin scanning for the first large r...

Страница 35: ...a large reflection is present at the front panel the progress bar will turn blue If the RL reference fails or is stopped the progress bar will turn red After referencing return loss the unit will beg...

Страница 36: ...rement screen press the Pass Fail Button to display live test results based on the user configurable settings Additionally if insertion loss needs to be referenced simply select the IL Ref option from...

Страница 37: ...he front panel of the unit and the intended reference location Additionally it is possible that the reflection from some APC cables is small enough that the unit will have a hard time detecting it In...

Страница 38: ...ceeding screen select the Start IL Ref option The instrument will select each of the sources measure their absolute power and store the reference accordingly The process might take a few seconds After...

Страница 39: ...ement screen press the Pass Fail Button to display live test results based on the user configurable settings Additionally if return loss needs to be referenced simply select the RL Ref option from the...

Страница 40: ...ion of the OP725 Then repeat the RL reference for the B A direction To return to the measurement screen press the Home button Connect the two reference cables and reference Insertion Loss as in Exampl...

Страница 41: ...nsertion loss the unit will begin to display readings in real time To return to the measurement screen press the Home button To switch from A B to B A or from B A to A B while in a measurement screen...

Страница 42: ...farther than 5 meters from the front panel of the unit adjust the display window until the reflection is on the screen Adjust the pulse mode to the proper setting Low mode will give a good scan for r...

Страница 43: ...flat line where a problem is suspected If the scan is saturating while in High mode switch back to Low mode for a more accurate scan Conversely if no reflection is seen in Low mode try switching it ov...

Страница 44: ...ress Run and adjust the cable setup until the reflection is adequately corrected Pressing Run will disable all other buttons This can involve disconnecting mated cables to scope endfaces for damage an...

Страница 45: ...s damaged contact OptoTest for a replacement or guidance on the proper bulkhead to replace it with Hybrid bulkheads The problem generally arises because the ferrules do not properly align due to diffe...

Страница 46: ...ng the FC connector and reconnecting it with the proper key alignment should yield a more stable connection Further hybrid bulkheads especially SC LC often have issues with alignment If the cores of t...

Страница 47: ...nel connector in which case it will need to be repolished or replaced Dirt and damage Inspect all endfaces including any SAVer cables and the front panel connector on the instrument Clean or repolish...

Страница 48: ...e removed caution should be exercised to make sure that no undue strain or tension is put on the fiber during removal To remove the front panel first locate the four screws that fasten the source pane...

Страница 49: ...iceable reflection at the front panel After checking for reflections mate the FC APC connector back to the source panel bulkhead Next slowly replace the panel back on the front of the unit making sure...

Страница 50: ...ur Terms and Conditions at www optotest com for warranty information NOTE Do not send instruments for any reason without contacting OptoTest headquarters first To request an RMA contact OptoTest at 1...

Страница 51: ...For Application Notes more detailed Testing Instructions and the most up to date OptoTest News go to www optobuzz com...

Страница 52: ...www optotest com 1 805 987 1700...

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