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MBR5 User Manual

MBR5 Rev 007

29

3.

The   user   must   also   select   1200bps   transmission   rate   to   enable
communication   between   existing   RX3   software   and   the   MBR5   over
RS-‐232   interface.

4.

Ensure the correct GPIB address is selected when using the GPIB
interface.

5.

Refer to the JDSU RX3 user’s manual for command details.

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Summary of Contents for MBR5

Page 1: ... Multi Output Backreflection Meter User Manual All information contained herein is believed to be accurate and is subject to change without notice No responsibility is assumed for its use JGR Optics Inc 2015 ...

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Page 3: ...ORMATION 7 SAFETY SYMBOLS 7 CLASSIFICATION 8 LASER SPECIFICATIONS 8 SAFETY INSTRUCTIONS 9 Electrical Shock Hazards 9 Fuse Replacement 9 Disconnecting from Line Power 9 Environmental Hazards 10 Laser Hazards 10 Other Hazards 10 GETTING STARTED 11 INITIAL INSPECTION 11 OPERATIONAL REQUIREMENTS 12 PRODUCT OVERVIEW 12 Front Panel and Key Description 12 Rear Panel 13 OPERATION 15 POWERING UP THE METER ...

Page 4: ...232 USB OR GPIB COMMUNICATION 32 Accessing the User Menu mode 32 JDSU Compatibility 32 Programming over GPIB 32 Programming Over RS 232 32 Programming Over USB 33 MAINTENANCE AND TROUBLESHOOTING 34 MAINTENANCE 34 Cleaning the Unit 34 Cleaning the Connector Ends 34 Cleaning Jumper Connectors 36 TROUBLESHOOTING 37 Connector Issues 37 MBR5 Calibration Issues 37 Loss and Reflection issues 38 Long Cabl...

Page 5: ...e 49 DESCRIPTION OF ERROR NUMBERS 49 IEEE 488 2 COMMON COMMANDS AND THE SCPI COMMAND TREE 50 IEEE 488 2 Common Commands 50 SCPI Command Tree 51 DESCRIPTION OF INDIVIDUAL COMMANDS 52 IEEE 488 2 Common Commands 52 SCPI Commands 56 JGR Legacy Device Specific Commands 63 JGR Legacy Device Specific Command Description 63 ...

Page 6: ......

Page 7: ...ion The particular category is defined as local level appliances portable equipment etc with smaller transient overvoltages than Installation Category Overvoltage Category III The unit falls in the Pollution Degree 2 category under IEC 1010 1 and CAN CSA C22 2 No 1010 1 The IEC standard on Safety Requirements for Electrical Equipment for Measurement Control and Laboratory Use relates to insulation...

Page 8: ...s subject to the EMC Directive in the European Union The EN61326 standard prescribes both emission and immunity requirements for laboratory measurement and control equipment This unit has undergone extensive testing according to the European Union Directive and Standards ...

Page 9: ...nd 1310 nm for multimode meters and 1310 1490 1550 1625 and or 1650 nm for single mode meters A variety of detector adapters are available to enable the measurement of power i e IL from different connector types Figure 1 MBR5 Backreflection Meter An important feature of the MBR5 meter is the FC APC ultra low backreflection connector at its output port To test different connector types the user nee...

Page 10: ...h and coupler of the MBR5 meter enable it to automatically reference out the variations of the internal light source the signal offset with no light dark current and the total signal level from internal and external backreflection BRtot The backreflection in dB from a device under test BRDUT is calculated using the following equation where BR0 is the stored value of the total backreflection in dB ...

Page 11: ...easurement jumpers this end is user selected to be compatible with the input connector of the DUT for example SC UPC or APC or LC APC or UPC The calibrated jumper has an APC connector at the input end and a UPC connector at the output end Remember to use the measurement jumper for measurement purposes only and to use the calibrated jumper for calibration verification purposes only The calibrated j...

Page 12: ... GPIB parallel interfaces Direct display of measured backreflection power or insertion loss Dual display mode for simultaneous BR and IL display Applications Connector backreflection and loss testing Component testing Installation verification Quality assurance QA acceptance testing Accessories AC power cord FC APC FC UPC hybrid measurement jumper FC APC FC UPC hybrid calibrated jumper FC type det...

Page 13: ...erve all safety instructions that are associated with a symbol Table 1 Safety Symbols Laser radiation may be present Refer to the User Manual for instructions on handling and operating the unit safely Avoid looking into any ports near which this symbol appears Frame or chassis terminal for electrical grounding within the unit Protective conductor terminal for electrical grounding to the earth WARN...

Page 14: ... laser classification of the US Food and Drug Administration FDA Center for Devices and Radiological Health CDRH Laser specifications are provided in Table 2 below Table 2 Specifications Parameter Single mode SM Multimode MM Wavelength 1310 1490 1550 1625 or 1650 10 nm 850 or 1310 20 nm Class 1 1 Fiber Type 9 125 µm SM 50 125 µm MM 62 5 125 µm MM Maximum Accessible Emission Level 15 dBm 23 dBm 25 ...

Page 15: ...s and avoid any situations that can short circuit the fuse Do not operate the unit when its cover or panels have been removed Fuse Replacement The MBR5 is protected with a fuse which is located at the back of the unit near the power inlet The fuse type used is 5 x 20 mm 1 A 250 V slow blow time delay To avoid electrical fire or damaging the unit only replace the fuse with one of the same size and ...

Page 16: ...Laser radiation is invisible and direct exposure can severely injure the human eye Other Hazards Warning If the equipment is used in a manner not specified by the manufacturer the protection provided by the equipment may be impaired Repairs are to be carried out only by a JGR Optics authorized technician In addition to voiding the warranty opening the unit can expose the user to potential shock ha...

Page 17: ...on document envelope included with the instrument Initial Inspection þ Inspect the package and contents for signs of damage þ Ensure all contents are included MBR5 Series Backreflection Meter 1 AC power cord 1 FC APC FC UPC hybrid measurement jumper 1 FC APC FC UPC hybrid calibrated jumper 1 FC type detector adapter 1 Detector cap User Manual NIST traceable Calibration Certificate þ Read the User ...

Page 18: ...ng environment must meet the following conditions for altitude temperature humidity and voltage Table 3 Environmental Requirements Parameter Specification Altitude Up to 2000 m Temperature Range of 0 to 40 C Humidity Up to 95 humidity 0 to 40 C Voltage Main supply voltage fluctuations must not exceed 10 of the nominal voltage NOTE The MBR5 meter may be equipped with up to four internal laser sourc...

Page 19: ...tures are described in Table 4 Figure 3 Back of the Meter Table 4 Rear Panel Components Component Function RS 232C RS 232C serial interface port IEEE 488 GPIB GPIB IEEE 488 1 interface port LINE Power Input also contains the user replaceable fuse MENU LOCAL BR BRO POWER REF DARK I O 1310 1490 1550 1625 DETECTOR CHANNEL MBR5 Backreflection Meter 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21...

Page 20: ...asure and store the backreflection value as BR0 The key LED will light up to indicate that the function is on To restore the factory set BR0 value press the BR0 key again The key LED will turn off POWER Used to switch to Optical Power Measurement mode and toggle between absolute power and relative power display when pressed again REF Sets the reference power for relative power measurements and adj...

Page 21: ...ements with the MBR5 require terminating the fiber at two different points The difference in the backreflection between the two termination points is then calculated and displayed By choosing the termination points before and after a DUT the backreflection of the DUT can be measured To perform BR measurements two terminations must be made Before the DUT for example on the BR5 meter side for measur...

Page 22: ...umper to the detector adapter on the front of the meter 9 Press the REF key the offset value equal to twice the measured loss is briefly displayed A small dot on the bottom right of the LCD display is displayed to indicate that the meter is using the measured offset value to calculate the backreflection 10 To have the meter perform the setup for all wavelengths press and hold the REF key for two s...

Page 23: ...f the measurement jumper and the input connector of the DUT and mate the two Refer to the CLEANING CONNECTORS section for more information on page 36 2 Press the λ key to select the wavelength at which the measurement is to be made 3 Terminate the measurement jumper immediately after the DUT see Figure 5 and Figure 6 and hold the termination point steady 4 The meter displays the backreflection tha...

Page 24: ...DUT Mandrel Wrap Measurement Jumper FC APC 850 1310 1550 DETECTOR CHANNEL 1 MENU LOCAL BR BR O POWER REF DARK MBR5 Backreflection Meter 61 0dB 1310 1 BACKREFLECTION I O Mandrel Wrap DUT Measurement Jumper FC APC 850 1310 1550 DETECTOR CHANNEL 1 MENU LOCAL BR BR O POWER REF DARK MBR5 Backreflection Meter 58 0dB 1310 1 BACKREFLECTION I O ...

Page 25: ... for every measurement to reference out the connector i e the user must do a BR0 for every DUT Refer to the MEASURING BR Including Connector section and redo the BR0 measurements for each wavelength but this time when terminating between the DUT s connector and the DUT Note that if a BR0 value has already been stored it is required to press the BR0 button first to erase it and then press it again ...

Page 26: ...reflections can cause interference effects that can make the reflections very sensitive to temperature NOTE To ensure accurate backreflection measurements below 65 dB 25 dB for multimode perform the BR0 measurement at least once per shift The measured backreflection is also affected by losses that can occur between the meter and the DUT To compensate for these losses measure the total amount of lo...

Page 27: ...ich is labeled as such 5 Attach the appropriate detector adapter to the detector on the front of the meter 6 Connect the output connector of the measurement jumper to the detector adapter This end of the measurement jumper is user selected and must be compatible with the input connector of the DUT 7 Press the λ key to select the desired wavelength 8 Press the POWER key to set the meter to Power mo...

Page 28: ...lue is not stored prior to a measurement the last value stored is used Measuring Power In Power mode absolute power measurements are displayed in dBm To perform power measurement of a DUT make sure to perform the set up steps in the SET UP FOR LOSS AND POWER MEASUREMENTS section on page 21 and then follow these steps 1 Press the Power key to set the meter to Power mode 2 Press the or key to select...

Page 29: ...on on page 21 and then follow these steps 1 Press the Power key to set the meter to Relative Power mode In Relative Power mode the meter displays RELATIVE POWER on the lower part of the LCD and the reading i e 0 15 dB is displayed on the top of the display 2 Press the or key to select the required output port 3 Press the λ key to select the wavelength at which the measurement is to be made 4 Clean...

Page 30: ... CURRENT MEASUREMENT section on page 22 for the procedure NOTE The value of ID can change with temperature variations Dual Display Mode The MBR5 Meter is capable of displaying both the backreflection and the power measurement insertion loss simultaneously To enable Dual Display Mode press the BR a first time to go to Backrefelction mode and then press and hold the BR button again for 2 seconds The...

Page 31: ...be used on single mode fiber if expected BR is not lower than 65dB UPC connectors and multimode fiber but since it is less effective than mandrel wrapping it is usually used on multimode fiber only Remember that an index matching medium cannot be used on single mode fiber with APC connectors since expected BR of such connectors is below 65dB Termination of the fiber is critical Stable and repeatab...

Page 32: ... of turn after your DUT for best BR accuracy 2 To minimize any memory of the bends in the jumper jacket do not pull on the jumper while winding and occasionally wind it in the opposite direction Figure 13 Mandrel Wrap Termination Technique Single Mode Remember also that index matching technique described below can also be use on single mode fiber with UPC connectors when expected BR is greater tha...

Page 33: ...dicator will light User Menu options are detailed in Table 6 Navigating the User Menu Access each option by pressing the corresponding softkey to the right of the display Return to the main user menu at any time by pressing the MENU button For the Transmission RATE and GPIB ADDR options begin by selecting the option with the softkey and use the up down arrows to scroll through the numbers Press th...

Page 34: ... for internal source drift SETUPviaLOSS ON OFF Default ON Adjusts the BR measurement by compensating for loss at the connector The measurement is taken during IL reference and offsets BR by twice this value MULTIDISPLAY ON OFF Default OFF Enables Multidisplay mode to show 4 channels on the display at the same time Save Quit Once changes are made the meter returns to the measurement mode Compatibil...

Page 35: ...select 1200bps transmission rate to enable communication between existing RX3 software and the MBR5 over RS 232 interface 4 Ensure the correct GPIB address is selected when using the GPIB interface 5 Refer to the JDSU RX3 user s manual for command details ...

Page 36: ...X Displayed momentarily when the BR value XX XdB is being stored as BR0 Warning BR0 higher than normal Once changes are made the meter returns to the measurement mode All SetupViaLoss Displayed momentarily after a reference has been taken for all wavelengths by holding the reference button down for 2 seconds in BR mode to indicate the SetupViaLoss function is being applied to all wavelengths X XX ...

Page 37: ...high SOURCE UNSTABLE Displayed momentarily when the laser power is unstable Calibration Caution Devices with malfunctioning lasers must be returned to the manufacturer for repair Calibration should be performed by a qualified Calibration Laboratory Power and Backreflection values of the MBR5 Meter are factory set and must be periodically adjusted to maintain performance Calibration Period JGR Opti...

Page 38: ...erly The different options for the communication are contained in the User Menu Refer to the USER MENU OPERATION section on page 27 for further details JDSU Compatibility Refer to JDSU user manual programming guide section of the backreflection meter when a JDSU emulation mode is chosen Programming over GPIB The MBR5 supports the IEEE 488 1 1987 interface standard It also supports the mandated com...

Page 39: ... meter via USB by using a USB to DB9 adapter cable The same RS 232 commands are used for USB communication Table 8 Serial Communication Settings Transmission Rate Selectable in the User Menu Available options are 300 1200 2400 9600 19200 and 38400 Baud Data bit 8 Parity N Stop bits 1 Flow Control None ...

Page 40: ...it from the line power 2 Clean the enclosure with a damp cloth 3 Do not plug the unit back until it is completely dry Cleaning the Connector Ends 1 Clean all connector ends with a lint free tissue and alcohol before every mating See the CLEANING CONNECTORS section on page 36 2 Loosen the retaining screws of the connector panel and remove the panel carefully to access the internal connectors 3 Figu...

Page 41: ...n the connector end faces and mating sleeve in accordance with the CLEANING CONNECTORS Section on page 36 6 Reinstall the connector onto the panel 7 Reinstall the connector panel To avoid damaging the input and output port fibers make one or two large loops in the fibers when reinstalling the panel ...

Page 42: ...red for cleaning the connector Filtered compressed air or dusting gas Lint free swab and lint free towels Optical grade isopropyl alcohol or optical grade 200 ethanol do not use rubbing alcohol which contains 30 water To clean the connectors 1 Inspect the endface of the connector using a fiber microscope to assess the contamination 2 Clean with a dry lint free wipe or cassette cleaner 3 If still c...

Page 43: ...flection Ensure that the insertion loss and backreflection of all the connectors are low and stable complying with the connector specifications MBR5 Calibration Issues To verify MBR5 calibration follow the procedure below If results are different than those indicated please contact JGR Optics to have your unit calibrated 1 Make sure to clean front panel connector Refer to the CLEANING CONNECTOR EN...

Page 44: ...er and returns it goes through the connectors twice so the effect of the losses is doubled If the insertion loss is close to 0 15 dB its effect is compensated automatically by the meter If the insertion loss differs substantially from 0 15 dB follow the measurement procedures described at the end of the LOSS AND POWER MEASUREMENTS section on page 21 Reflections before the DUT When a device is conn...

Page 45: ...ser Stability If the message Source Unstable or LASER POWER LOW is displayed remove the front connector panel clean the front panel connectors connect the internal FC APC connector to the detector adapter and press the Power key to set the meter to Power mode The reading must be steady and higher than 10 dBm If not perform the procedure recommended in Table 9 when this message is displayed ...

Page 46: ...p and measurement techniques described in the SETTING UP THE METER FOR BACKREFLECTION MEASUREMENTS section BR range is very limited Follow the setup and measurement techniques described in the SETTING UP THE METER FOR BACKREFLECTION MEASUREMENTS section TOO MUCH LIGHT Dark current ID value is too high Attach the detector cap to the detector and press the ID key LASER POWER LOW Laser power is too l...

Page 47: ... the original shipping box and packing material If these are not available follow the guidelines below 1 Contact JGR Optics to obtain a RMA number 2 Cover the front panel with foam to prevent damage 3 Wrap the unit in anti static packaging Use anti static connector covers 4 Pack the unit in a strong enough shipping box considering the unit s weight 5 Use enough shock absorbing material 10 to 15 cm...

Page 48: ...MBR5 User Manual MBR5 Rev 007 42 Contact Information JGR Optics Inc 160 Michael Cowpland Drive Ottawa Ontario Canada K2M 1P6 Phone 613 599 1000 Fax 613 599 1099 sales jgroptics com www jgroptics com ...

Page 49: ...5 User Manual MBR5 Rev 007 43 A SPECIFICATIONS Specifications are provided here as a reference only and may be changed without notice Please refer to JGR Optics s website for the most recent specifications ...

Page 50: ... semicolon for example CLS ESE 10 Terminating a Program Message The command terminator should be a linefeed LF plus EOI for GPIB and a carriage return CR plus a linefeed LF for RS 232 No command processing occurs until a command terminator is received Command Header Variations Each command header in the command tree has a long form and a short form Both forms are acceptable and each form gives an ...

Page 51: ...following program messages are valid SOUR WAV 1310 WAV SOUR WAV 1310 SOUR WAV STAT OPER ENAB 5 ENAB The following program messages are NOT valid SOUR WAV 1310 SOUR WAV no colon before second command CHAN NEXT CHAN CHAN command at different level than NEXT Default Commands Default commands are commands that do not need to be explicitly included in the command path If a default command for a path ex...

Page 52: ...Refer to IEEE488 2 and SCPI1999 documents for further details Status Byte Register The status byte register contains the summary bits for each of the structures implemented in the meter the master summary bit MSB and the request for service bit RQS Bit 0 to Bit 3 are not used Bit 4 message available is set to 1 when a response message is available in the output queue Bit 5 event summary bit is the...

Page 53: ...service request is not generated for this condition unless the bit in the status register or the bit in the service request enable register is cleared and the condition reoccurs Standard Event Status Register Bit 0 operation complete is set in response to the OPC common command This bit is set when all operations are complete Bit 1 request control is always set to 0 Service Request Enable Register...

Page 54: ...ways set to 0 Bit 7 power on is set when an off to on transition occurs in the power supply of the meter Standard Event Status Enable Register The contents of the standard event status enable register determine which events in the standard event status register are reflected in the event summary bit ESB of the status byte register Queues Input Queue The input queue in the meter is a first in first...

Page 55: ...B the EOI signal is set to true when the last character in a response is sent If an attempt is made to read the output queue when it is empty and the current program message does not contain a query a query error bit is set Error Queue The error queue is where errors are placed and it can contain up to 10 error messages Because it is a FIFO queue the error returned when the error queue is read is ...

Page 56: ...eue overflow The error queue has overflowed and an error has occurred that cannot be recorded 400 Query error A query error was detected but the parser cannot be more specific IEEE 488 2 Common Commands and the SCPI Command Tree IEEE 488 2 Common Commands Command Parameter Response Minimum Maximum CLS N A N A N A N A ESE Integer N A 0 255 ESE N A Integer 0 255 ESR N A Integer 0 255 IDN N A String ...

Page 57: ...isted in the following table Command Parameters Response SOURce WAVlength Num Val MIN MAX DEF WAVlength None MIN MAX DEF Num Val NEXT CHANnel Num Val MIN MAX CHANnel None MIN MAX Num Val NEXT POWer MODe ABS REL BRM DUL MODe ABS REL BRM DUL READ Num Val FULL Num Val String DETector Num Val MIN MAX DETector None MIN MAX Num Val NEXT DARK BR0 READ Num Val STORe CLEar ALL SVL READ Num Val CLEar ALL ...

Page 58: ...cription of Individual Commands IEEE 488 2 Common Commands Clear Status Command Syntax CLS Function Clears the following queues and registers Error queue Standard event status register Status byte register Operation event register Questionable event register If CLS is sent immediately after a message terminating sequence both the output queue and the MAV bit in the status byte register are cleared...

Page 59: ...e Register Query Syntax ESE Function Returns the contents of the standard event status enable register as an integer that when converted to a binary number represents the bit values of the register Example ESE returns 97 if the standard event status enable register is set to 01100001 Standard Event Status Register Query Syntax ESR Function Returns the contents of the standard event status register...

Page 60: ...e meter to set the OPC bit in the standard event status register when all pending operations have been completed Example OPC Operation Complete Query Syntax OPC Function Places a 1 in the output queue of the meter when all pending operations have been completed Because the 1 is not always placed in the output queue immediately the status byte register should be polled and the MAV bit checked to de...

Page 61: ...ice request enable register as an integer that when converted to a binary number represents the bit values of the register Example SRE returns 154 if the service request enable register is set to 10011010 Read Status Byte Query Syntax STB Function Returns the contents of the status byte register as an integer that when converted to a binary number represents the bit values of the register The bit ...

Page 62: ...AX DEF OR SOURce WAVlength NEXT Function Switches to a specified or next available wavelength no parameter or NEXT switches to the next available wavelength wavelength switches to the specified wavelength in nm Other units can be specified MIN MAX or DEF switches to the first last or default wavelength respectively Example WAV 1 55 um switches the meter s output to 1550 nm SOURce WAVlength Syntax ...

Page 63: ... Example CHAN 3 switches the meter to channel 3 SOURce CHANnel Syntax SOURce CHANnel space MIN MAX Function Returns the current or specified channel number No parameter returns the current channel number MIN or MAX returns the first or last configured channel number Example CHAN returns 3 POWER MODe Syntax POWER MODe space ABS REL BRM DUL Function Switches the meter between the following operation...

Page 64: ...or BR of the meter the current channel number detector number and output wavelength Example READ FULL returns 55 2 5 0 1310 the unit is in BR mode POWER DETector NEXT Syntax POWER DETector space detector_number MIN MAX OR POWER DETector NEXT Function Switches to the specified detector number no parameter or NEXT switches to the next detector number detector_number switches to the specified by the ...

Page 65: ...all available detectors Example DET DARK takes the dark current measurement for all detectors POWER BR0 READ Syntax POWER BR0 READ Function Returns the current BR0 value custom or factory stored Example BR0 READ returns 65 5 POWER BR0 STORe Syntax POWER BR0 STORe Function Measures and stores the custom BR0 measurement for the current source wavelength and output channel Example BR0 STOR measures a...

Page 66: ...R SVL CLEAR Syntax POWER SVL CLEAR Function Clears the setup via loss value for the current source wavelength and output channel Example SVL CLEAR clears the setup via loss value POWER SVL CLEAR ALL Syntax POWER SVL CLEAR ALL Function Clears the setup via loss values for all source wavelengths and all output channels Example SVL CLEAR ALL clears all setup via loss values POWER REFerence Syntax POW...

Page 67: ...REFerence SAVe Syntax POWER REFerence SAVe Function Saves Insertion loss BR0 and Setup via loss reference values to flash These values can be restored on the power on if the meter is factory set for this function Example REF SAV saves all reference values to flash POWER REFerence REStore Syntax POWER REFerence REStore Function Restores Insertion loss BR0 and Setup via loss reference values from fl...

Page 68: ...atted numeric value the of the SCPI version number Example SYST VERS returns 1999 0 SYSTem CAPability Syntax SYSTem CAPability Function Returns the string specifying the capability of the device Example SYSTem CAPability returns OPTICAL INSTRUMENT SYSTem COMMunicate GPIB SELF ADDRess Syntax SYSTem COMMunicate GPIB SELF ADDRess space numeric_val ue Function Sets the GPIB address The factory set GPI...

Page 69: ...to Dual display Mode 5 MODE Query the current operation MODE 6 SWL Switch Wavelength 7 SSC Switch Wavelength by Sequence 8 SCH Switch Channel 9 DET Switch Detector 10 BRZS Store BR0 BR Zero Store 11 BRZC Clear BR0 BR Zero Clear 12 DARK Store Dark Current 13 TREF Take relative power Reference 14 TMF Transmit a Measurement in Full format 15 TDO Transmit Data Only 16 LCL Return to Local control JGR L...

Page 70: ...232 USB Syntax DUL CR Returned Format None MODE The MODE command queries the current operation mode query return ABS REL BRM or DUL for the four different operating modes Interface GPIB and RS 232 USB Syntax MODE CR Returned Format Mode NL where Mode ABS REL BRM or DUL SWL The SWL command switches the meter to the next wavelength or to a specific wavelength using the wavelength um as reference Int...

Page 71: ...ber sequence as reference The position of a laser in a particular meter will depend on the number of lasers in the meter Interface GPIB and RS 232 USB Syntax SSC CR switches to next wavelength SSC x CR where x 1 2 3 or 4 Example SSC 2 switches to the second wavelength ie on a 2 wavelength MBR5 1310 1550 SSC 2 would switch to 1550nm however on a 1310 1480 1550 1625 SSC 2 would switch to 1480nm Retu...

Page 72: ...tax SCH CR Returned Format xx NL where xx 01 02 48 DET The DET command can switch the meter to the next detector or to a specific detector Interface GPIB and RS 232 Syntax DET CR switches to next detector DET xx CR where xx 00 02 03 4 Example DET 1 switches to detector 1 Returned Format None DET Query returns the current detector number in xx format Valid returns are 00 01 02 Interface GPIB and RS...

Page 73: ...ucceed Interface GPIB and RS 232 USB Syntax DARK CR Returned Format None TREF The TREF command will take relative power reference The meter needs to be in relative power mode for the command to succeed Interface GPIB and RS 232 USB Syntax TREF CR Returned Format None TMF The TMF command will initiate a measurement transmission in full display format addition with current wavelength Interface GPIB ...

Page 74: ...nd in Dual Display mode the data is both the BR and IL Interface GPIB and RS 232 USB Syntax TDO CR Returned Format xx x for BR mode xx xx for power mode xx x xx xx for dual mode LCL The LCL command is used to return the remote control status to local front panel control Same function as with the Local key on front panel Interface GPIB and RS 232 USB Syntax LCL CR Returned Format None ...

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