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THORLABS ERM100 Operation Manual Download Page 58

© 2018 Thorlabs

56

ERM100

6.8

List of Acronyms

The following acronyms and abbreviations are used in this manual:

ASE

Amplified Spontaneous Emission

DC

Direct Current

DFB

Distributed Feedback (laser)

DFU

Device Firmware Update

DOP

Degree Of Polarization

DUT

Device Under Test

ER

Extinction Ration

PM

Polarization-Maintaining

PMF

Polarization-Maintaining Fiber

SLED

Super-Luminescent Emitting Diode

USB

Universal Serial Bus

Summary of Contents for ERM100

Page 1: ...Extinction Ratio Meter ERM100 Operation Manual 2018 ...

Page 2: ...Copyright 2018 Thorlabs Version Date Item No 1 2 10 Jul 2018 M0009 510 309 ...

Page 3: ...rsion 11 3 2 3 Remote Mode 11 3 2 4 Error Messages 12 3 3 Measurement Procedure 12 3 4 Measurement Principle 12 3 5 Coupling of linear polarized light into a main axis of a PM fiber 13 3 6 Alignment of a Laser Diode to a PM Fiber 14 3 7 Alignment of a PMF Patchcord 14 3 8 Aligning the connectors key to a main axis of a PM fiber 15 3 9 Measurement consideration 4 Remote Operation 16 16 4 1 Installi...

Page 4: ...nce 41 6 2 1 Common IEEE488 2 Commands 44 6 2 2 Measurement Commands 45 6 2 3 Device Setup Commands 46 6 2 4 Device Status Commands 47 6 2 5 General System Commands 48 6 3 Status Reporting 48 6 3 1 Status Structure 49 6 3 2 Register Description 52 6 4 Certifications and Compliances 53 6 5 Warranty 54 6 6 Copyright and Exclusion of Reliability 55 6 7 Thorlabs End of Life Policy WEEE 56 6 8 List of ...

Page 5: ...international partners are looking forward to hearing from you Thorlabs GmbH Warning Sections marked by this symbol explain dangers that might result in personal injury or death Always read the associated information carefully before performing the indicated procedure Please read this advice carefully This manual also contains NOTES and HINTS written in this form Attention Paragraphs preceded by t...

Page 6: ...per grounding can cause electric shock with damages to your health or even death All modules must only be operated with proper shielded connection cables Only with written consent from Thorlabs may changes to single components be carried out or components not supplied by Thorlabs be used Do not obstruct the air ventilation slots in housing Do not remove covers Refer servicing to qualified personal...

Page 7: ... disc with at least 100 MB free storage space Free USB2 0 port USB cable according the USB 2 0 specification 1 3 2 Software Requirements The ERM100 software CD1 1 is compatible with Windows XP 32 bit SP3 operating sys tem A NI VISA engine V4 2 or higher must be installed This NI VISA engines comes with the Thorlabs ERM100 installation CD In order to operate the ERM100 under Windows Vista 32 bit 64...

Page 8: ... country 3 2 Replacement mains fuses 4 1 operation manual 5 1 CD Rom 6 1 USB Cable 2 2 Getting Started Connect the ERM100 to the power outlet Turn the unit on by pressing the power switch at the front After switching on the unit the display will show the device version and then jump to the opera tion screen The ERM100 is immediately ready to use after turning on The rated accuracy is reached how e...

Page 9: ... 2018 Thorlabs 3 Operating Instruction 7 3 Operating Instruction 3 1 Operating Elements Front Panel Rear Panel ...

Page 10: ...en these displays The ER display presents the current ER measurement value in dB as well as the current mis alignment angle in degree The ERmin display shows the minimum ER in dB since the last ERmin Monitor reset and the corresponding misalignment angle in degree Pressing the button CLR Clear while in Main Display Mode resets the minimum ER mon itor and the minimum ER value measured from that mom...

Page 11: ...r left corner of the Display Pressing the SET button enters the edit mode of the selected menu entry If a menu point is in edit mode the UP and DOWN buttons are used to modify the value and the SET button is used to save the new value If a menu entry is in edit mode a cursor flashes at the position the value will be ed ited The following menu functions are accessible 3 2 2 1 Averaging The ERM100 g...

Page 12: ...ERM100 to LOCAL state The display changes to the local state display and the REMOTE LED goes off Remote with Local Lockout The ERM100 is operated by the remote interface The REMOTE LED on the ERM100 front is on The front panel can not change settings The Go to Local function of this menu entry is locked by a remote command Therefore this remote state is not editable The front panel can only regain...

Page 13: ...et ting for 3 seconds a remote message display is shown If the CLR Clear button is pressed within these 3 seconds the instrument is set to local mode If the ERM100 is in remote control state with local lockout and you try to change any setting for 3 seconds a remote with local lockout message display is shown In Remote with Local Lockout mode the Go to Local function is disabled by a remote com ma...

Page 14: ... polarized light is coupled to one of the main axis slow or fast of a PM fiber the linear polarization will be maintained in the fiber Light with an elliptical polarization or linear polarized light which is not parallel to one of the main axis will not preserve its polarization state along the fiber The output polarization state is not predictable It depends on the current conditions like bends a...

Page 15: ...rum of the broadband source will be different This leads to a depolarization of the complete light In this case the ERM100 will detect a low Extinction ratio 3 6 Alignment of a Laser Diode to a PM Fiber The alignment of a laser diode to a PM fiber can be done in the following way 1 The output of the fiber is entered to the input of the ERM100 and the unit is switched on 2 Toggle to the ER display ...

Page 16: ...the SLED to the input of the fiber bench with the polarizer 3 Connect the input of the PM fiber to the output of the fiber bench 4 Toggle to the ER display by pressing the button SET 5 Rotate the input of the PM fiber in respect to the fiber bench until a maximum ER value is displayed Typically values between 20dB and 30dB are desired 6 The shown ER value in the ER display represents the minimum E...

Page 17: ...zation but with a DOP less than 100 enters the rotating polarizer the calculated ER value depends strongly on the DOP The following table shows the measured ER value in relation to the DOP assuming a ideal linear polarization DOP 90 0 98 0 99 0 99 8 99 9 99 94 99 98 99 99 99 998 ER dB 12 8 20 0 23 0 30 0 33 0 35 0 40 0 43 0 50 0 If the DOP is a problem for the ER measurement a more complex measure...

Page 18: ...the desired configuration Query commands that get data from the ERM100 These commands are always terminated by a question mark These commands are described in chapter Command Reference of this document Additionally the ERM100 USB driver comes with a VISA Instrument Driver DLL Details please see in section Write Your Own Application Attention Prior to connect the ERM100 first time to a PC please in...

Page 19: ...t to operate the ERM100 from a Windows Vista or Windows 7 operating system you need to install a NI VISA Runtime version 5 0 2 or higher You can download it from Na tional Instruments web site www ni com visa If you have installed already an appropriate NI VISA version the software installation descrip tion continues in section Install Remote Control Application 4 1 1 Install NI Visa 4 2 The insta...

Page 20: ... 2018 Thorlabs 18 ERM100 ...

Page 21: ...click Next Note You may choose Restart later and continue with the installation of Remote Control Applica tion however you need to restart the computer prior to connect the ERM100 first time for a proper operation Otherwise the ERM100 won t be recognized in a correct way ...

Page 22: ... 2018 Thorlabs 20 ERM100 4 1 2 Install Remote Control Application Click I accept if you do so then click Next ...

Page 23: ... 2018 Thorlabs 4 Remote Operation 21 Click Finish to complete the installation Note If the computer has not been restarted after NI VISA installation please reboot now ...

Page 24: ... 2018 Thorlabs 22 ERM100 4 1 3 Install Instrument Communicator Click I accept if you do so then click Next ...

Page 25: ... 2018 Thorlabs 4 Remote Operation 23 Click Next to finish the installation 4 1 4 Install Firmware Upgrade Wizard This wizard is an easy to use tool for uploading a new firmware version ...

Page 26: ... 2018 Thorlabs 24 ERM100 Click I accept if you do so then click Next ...

Page 27: ... 2018 Thorlabs 4 Remote Operation 25 Click Next to finish the installation ...

Page 28: ... 2018 Thorlabs 26 ERM100 4 1 5 Install NI Instrument Drivers This topic installs ERM100 instrument drivers for different programming interfaces For details please see section Write Your Own Application ...

Page 29: ...A runtime on your computer prior to connect the ERM100 first time Switch on the ERM100 Connect the ERM100 to the PC using the provided USB 2 0 cable A to B The Found New Hardware Wizard comes up It will recognize the ERM100 twice as a USBTMC USB Test and Measurement Class and as a DFU Device Firmware Upload cap able device Below are the screen shots in case of a Windows XP operating system ...

Page 30: ... 2018 Thorlabs 28 ERM100 Check the box No not this time then Next to continue ...

Page 31: ...9 Check the box No not this time then Next to continue Under Windows 7 operating system the device recognition and driver install is more simple after connect a single screen appears during driver installation after completion it states ...

Page 32: ...be remotely operated 4 3 Remote Control Application The Remote Control Application is an easy to use simple data logger Make sure the ERM100 is connected and recognized Start the application from the Start but ton Click Connect a dialog screen comes up Select the instrument and click Select ...

Page 33: ... 2018 Thorlabs 4 Remote Operation 31 The logged data can be saved in csv file format ...

Page 34: ...M100_Drv hlp C Program Files IVI Foundation VISA WinNT Thorlabs ERM100 manual ERM100_Drv txt C Program Files IVI Foundation VISA WinNT Thorlabs ERM100 manual ERM100_Drv_VB txt Matlab LabVIEW programming Function Panel C Program Files IVI Foundation VISA WinNT Thorlabs ERM100 ERM100_Drv fp Driver C Program Files IVI Foundation VISA WinNT Bin ERM100_Drv_32 dll LabVIEW container file C Program Files ...

Page 35: ...e contact Thorlabs for return instructions Do not remove covers In order to ensure the specified measurement accuracy the recommended factory recalibration interval is 12 months 5 1 Firmware Upgrade Prior to start the firmware upgrade please download the new version from our website unzip it and save it to a convenient to remember location on your PC Firmware upgrades can be done by the user via t...

Page 36: ... 2018 Thorlabs 34 ERM100 Select the ERM100 firmware file click Next ...

Page 37: ...vice driver has been installed yet As for this reason the wizard cannot find a DFU device and an Error message comes up Don t click nor to Yes nor to No Please note that at the same time in the background a Found New Hardware Wizard came up please bring it in front and proceed as shown in the screen shots below ...

Page 38: ... 2018 Thorlabs 36 ERM100 After finishing the DFU driver installation the above screen closes this way getting you back to Error screen now click Yes to continue ...

Page 39: ...he ERM100 menu provides the information on serial number firmware version bootloader version from the display Prior to contact Thorlabs please retrieve this information and keep it ready 5 3 Troubleshooting In case that your ERM100 shows malfunction please check the following items Unit does not work at all no display at the front Ø ERM100 connected properly to the mains ...

Page 40: ... source laser diode SLED ASE switched on Check Switch the light source on Display shows System ERROR Motor speed low Ø The motor speed is low for more than 10 seconds The motor is defective Please contact Thorlabs If you don t find the error source by means of the trouble shooting list please first contact Thorlabs prior to return the ERM100 for checkup and repair 5 4 Replacing Mains Fuses The ERM...

Page 41: ...ners with the aid of a small screw driver The retainers are located on the right and left side of the holder and must be pressed towards the center 3 Replace the defective or wrong fuses and press in the fuse holder until locked on both sides Fuse type T0 8A 250V 800 mA time lag 250V Note The fuses must meet IEC specification 60127 2 III time characteristic time lag T 250V AC size 5 x 20 mm ...

Page 42: ... consumption max 20 VA Supply mains over voltage Category II Cat II General Operating Temperature Range 4 5C 40 C Storage Temperature Range 40 to 70 C Relative Humidity Max 80 up to 31 C decreasing to 50 at 40 C Pollution Degree indoor use only 2 Operation altitude 2000 m Warm up time for rated accuracy 10 min Dimensions W x H x D without operating elements with operating elements 146 x 66 x 290 m...

Page 43: ...ry IEEE488 2 1992 10 36 ESE Standard Event Status Enable command IEEE488 2 1992 10 10 ESE Standard Event Status Enable query IEEE488 2 1992 10 11 ESR Standard Event Status Register query IEEE488 2 1992 10 12 CLS Clear Status command IEEE488 2 1992 10 3 Descriptions Identification Query Command syntax IDN Response syntax ARBITRARY ASCII RESPONSE DATA Description Identification query see also IEEE48...

Page 44: ... syntax WAI Description This command is required for IEEE488 compatibility and has no effect see also IEEE488 2 1992 10 39 Reset Command Command syntax RST Description This command resets the device see also IEEE488 2 1992 10 32 Service Request Enable Command Command syntax SRE DECIMAL NUMERIC PROGRAM DATA Description Sets the device s Service Request Enable Register see also IEEE488 2 1992 10 34 ...

Page 45: ...ter see also IEEE488 2 1992 10 10 and chapter Status Reporting in this document Standard Event Status Enable Query Command syntax ESE Response syntax NR1 NUMERIC RESPONSE DATA Description Queries the device s Standard Event Status Enable Register see also IEEE488 2 1992 10 11 and chapter Status Reporting in this document Standard Event Status Register Query Command syntax ESR Response syntax NR1 N...

Page 46: ...io minimum value dB NR3 NUMERIC RESPONSE DATA Key angle maximum value NR3 NUMERIC RESPONSE DATA Description Queries the extreme values of the measurement results If there was no new measurement since last monitor reset the values Inf for the ER and 0 0 for the angle are returned and an error is in sert into the error queue Extreme Value Query With Reset Command syntax MEAS EXR Response syntax Exti...

Page 47: ...s the wavelength nm to use for calculating the sensor sensit ivity Query Wavelength Command syntax WAVEL VAL Response syntax currently used wavelength NR3 NUMERIC RESPONSE DATA Description Queries the currently used wavelength nm Query Wavelength Range Command syntax WAVEL RNG Response syntax minimum settable wavelength nm NR3 NUMERIC RESPONSE DATA maximum settable wavelength nm NR3 NUMERIC RESPON...

Page 48: ...er see also chapter Status Reporting in this document Query Device Error Event Register Command syntax STAT ERR EVT Response syntax NR1 NUMERIC RESPONSE DATA Description Queries the device s Error Event Register see also chapter Status Reporting in this document Set Device Error Event Enable Register Command syntax STAT ERR ENA DECIMAL NUMERIC PROGRAM DATA Description Sets the device s Error Event...

Page 49: ... STAT OPER ENA Response syntax NR1 NUMERIC RESPONSE DATA Description Queries the device s Operation Event Enable Register see also chapter Status Reporting in this document 6 2 5 General System Commands Command List Command Description SYST ERR Query the device s error queue SYST INFO Query descriptive device information Description Error Query Command syntax SYST ERR Response syntax Error number ...

Page 50: ... 2018 Thorlabs 48 ERM100 6 3 Status Reporting 6 3 1 Status Structure The device uses a status reporting structure like it is defined in IEEE488 2 1992 11 The fig ure below shows the complete structure ...

Page 51: ...peration Status Structure Summary Bit 0 Reserved Standard Event Status Structure The Standard Event Status Structure is described in IEEE488 2 1992 11 5 Device Error Status Structure The Device Error Status Structure reflects asynchronous device errors Bits in the according event register are rising and falling edge triggered Bit Mnemonic Description 15 4 reserved 3 OPL Optical input power low 2 O...

Page 52: ...eading EEPROM 42 Attempt to read from unknown EEPROM 43 EEPROM out of space 50 Response message buffer overflow 60 Error queue overflow 61 Command message buffer overflow 62 Unknown command 63 Invalid number of command parameters 64 Erroneous decimal command parameter 65 Erroneous nondecimal command parameter 66 Erroneous char string command parameter 67 Invalid character program data value 70 Adj...

Page 53: ...ion 126 Erroneous key offset checksum 130 I C Illegal START STOP condition 131 I C Slave adress not acknowledged Not a valid bus adress 132 I C Incomplete write operation Slave rejected to receive all data in the buffer 133 I C Arbitration lost ...

Page 54: ...ations Immunity Performance Criterion A C 4 IEC 61000 3 2 AC Power Line Harmonic Emissions IEC 61000 3 3 Voltage Fluctuations and Flicker FCC EMC Compli ance Emissions comply with the Class B Limits of FCC Code of Federal Regulations 47 Part 15 Subpart B 2 3 EC Declaration of Conformity Low Voltage Compliance was demonstrated to the following specification as listed in the Official Journal of the ...

Page 55: ... software determined by Thorlabs for this unit to operate fault free provided that they are handled according to our requirements However Thorlabs does not warrant a fault free and uninterrupted operation of the unit of the software or firmware for special applications nor this instruction manual to be error free Thorlabs is not liable for consequential damages Restriction of Warranty The warranty...

Page 56: ...se of this product In no event shall any liability exceed the purchase price of the product Please note that the content of this document is neither part of any previous or existing agree ment promise representation or legal relationship nor an alteration or amendment thereof All obligations of Thorlabs result from the respective contract of sale which also includes the com plete and exclusively a...

Page 57: ...ice does not refer to other Thorlabs products such as pure OEM products that means assemblies to be built into a unit by the user e g OEM laser driver cards components mechanics and optics left over parts of units disassembled by the user PCB s housings etc Waste treatment on your own responsibility If you do not return an end of life unit to Thorlabs you must hand it to a company specialized in w...

Page 58: ...al ASE Amplified Spontaneous Emission DC Direct Current DFB Distributed Feedback laser DFU Device Firmware Update DOP Degree Of Polarization DUT Device Under Test ER Extinction Ration PM Polarization Maintaining PMF Polarization Maintaining Fiber SLED Super Luminescent Emitting Diode USB Universal Serial Bus ...

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