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90044527 - 1830-R User`s Manual

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1. Model 1830 R SERIES Optical Power Meters User s Manual AD Newport Experience Solutions Preface Preface iii EU Declaration of Conformity We declare that the accompanying product identified with the CE mark complies with requirements of the Electromagnetic Compatibility Directive 2004 108 EC and the Low Voltage Directive 2006 95 EC Model Numbers 1830 R and 1830 R GPIB Year CE mark affixed 2011 Type of Equipment Electrical equipment for measurement control and laboratory use in industrial locations Manufacturer Newport Corporation 1791 Deere Avenue Irvine CA 92606 Standards Applied Compliance was demonstrated to the following standards to the extent applicable BS EN61326 1 2006 Electrical equipment for measurement control and laboratory use EMC requirements This equipment meets the CISPR 11 2009 A1 2010 Class A Group 1 radiated and conducted emission limits BS EN 61010 1 2010 Safety requirements for electrical equipment for measurement control and laboratory use Lal Leet Mark Carroll Sr Director Instruments Business Newport Corporation 1791 Deere Ave Irvine CA92606 USA Preface Warranty Newport Corporation warrants that this product will be free from defects in material and workmanship and will comply with Newport s published specifications at the time of sale for a period of one year from date of shipment If found to be defective dur
2. NA Wnnnn Increments the calibration wavelength in use NV Wnnnn Decrements the calibration wavelength in use l O None Turns the meter on off ATTN A0 A1 Sets the responsivity value for either 1 detector alone or 2 detector and OD3 optical attenuator DISP KO K1 Turns the display ON OFF When the display is off a dot LED blinks to show that the unit is active but the display is off BEEP B0 B1 Turns the variable frequency beeper on off AUTO R0 R1 R8 Turns the automatic signal ranging on off RANGE A Rx Increments the signal range and disables the automatic signal ranging RANGE Y Rx Decrements the signal range and disables the automatic signal ranging Table 3 1830 R Key Functions and Associated Remote Commands A y 34 System Operation 4 3 1 4 3 2 4 3 3 LOCAL R S Local Mode Run Stop This key serves two purposes 1 When the meter receives a command through either USB RS 232C or the IEEE 488 GPIB interface the meter is automatically put into remote mode and the REM annunciator is displayed Now all front panel keys are disabled except this LOCAL key which when pressed puts the meter back into the local mode The meter can also be put in the local mode by sending the remote command LO 2 When the meter is in the local mode pressing this key will toggle between run stop acquisition modes The HOLD annunciator is displayed when the meter is in the stop acquisition mode ZERO Offset S
3. Saturation Over Range Message Availal Busy Service Reques Read Done RO Auto Range PM AUTO 1 RI Signal Range Highest signal PM RANge 0 range R2 Signal Range 2 PM RANge 1 R3 Signal Range 3 PM RANge 2 R4 Signal Range 4 PM RANge 3 R5 Signal Range 5 PM RANge 4 R6 Signal Range 6 PM RANge 5 R7 Signal Range 7 PM RANge 6 R8 Signal Range 8 Lowest signal PM RANge 7 range Remote Command Set 57 R Signal range query returns 1 8 er S Store reference PM REF STOre U1 Units W PM UNITS 2 U2 Units dB PM UNITS 9 U3 Units dBm PM UNITS 6 U4 Units REL PM UNITS 12 U Units query returns 1 2 3 4 PM UNITS Wnnnn Set wavelength to nnnn PM Lambda nnnn W Wavelength query returns PM Lambda nnnn ZO Zero off PM ZERO 0 Z1 Zero on PM ZERO 1 Z Zero query returns 0 1 PM ZERO Identification string query IDN Reset instrument RST GPIB Address query ADDRess Error string query ERRSTR 58 Remote Command Set 7 2 Detailed Description of Commands and Queries An or PM ATT n Attenuator On Off Function Syntax Parameter Type Related Commands Selects between the responsivity values associated with the photodetector alone or for the photodetector attenuator combination These values are stored within the calibration module An or PM ATT n n 0 Use the calibration module s responsivity values associated with the
4. s present measurement units The units can be either Watts dB dBm or REL U or PM UNITS None When U command is issued 1 Measurement unit is Watts 2 Measurement unit is dB 3 Measurement unit is dBm 4 Measurement unit is REL When PM UNITS command issued 2 Measurement unit is Watts 9 Measurement unit is dB 6 Measurement unit is dBm 12 Measurement unit is REL Send U Resp 1 Measurement units are Watts Send PM UNITS Remote Command Set 73 Related Commands Resp 2 Measurement units are Watts Un Set the power meter s measurement units S Set the reference signal power level Wnnnn Set the wavelength of measurement Wannn or PM Lambda nnnn Set Wavelength to nnnn Function Syntax Parameter Type Range Example Related Commands This command is used to set the wavelength of the input signal The 1830 R Series Optical Power Meter uses the responsivity value within the calibration module corresponding to the wavelength selected for its calculations Wannn or PM LAMBDA nnnn nnnn The wavelength of the input signal integer Depends on the detector used W280 Set the wavelength to 280nm W or PM Lambda Query the power meter s present wavelength setting W or PM Lambda Wavelength Query Function Syntax Parameter Returns Example This query informs the user about 1830 R Series Optical Power Meter s current wavelength setting W or PM L
5. significantly different from ambient With the detector covered a reading of the dark current may be made Next remove the material which is covering the detector and take another reading The difference is the ambient light level The effects of ambient light are greatly reduced when using a fiber connectorized signal input to the detector If free space beam measurements are desired using an attenuator will reduce stray light and often improve the source signal to ambient signal noise level Wavelength specific filters such as optical cutoff bandpass or spike filters can also be used if the signal wavelength spectrum permits Other techniques to reduce stray light include using apertures placing the detector in a box or other housing to shield the surface from light which is not coming from the source and turning off room and other lights Performing Measurements 41 5 3 5 4 NOTE Changes in ambient light levels can occur from such factors as turning room lights on or off or by moving people or equipment Remember if you can see your detector element then your detector can see the light bouncing off your shirt Setting the Wavelength In order to obtain accurate optical power measurements it is necessary to set the calibration wavelength to the wavelength of the light incident upon the photodetector This calibration wavelength is indicated in nanometers on the LCD display at power up and whenever the AV A4 keys are p
6. st acnk nent cctentusateaneniecs 25 Table2 1830 R Series Display Annunciators Messages ccsceeees 32 Table3 1830 R Key Functions and Associated Remote Commands 33 Table 4 1830 R Series Default Power Up Conditions ccceeeeeeeeee 38 Table 5 Common Measurement Errors ccecceeccceeeceeseeetceeeeceteeeeeeenaees 45 Table 6 Symptom Fault Troubleshooting Guide ce ceeceseeseeeeeeeeeeees 78 xii Preface This page is intentionally left blank 1 1 1 Safety Precautions Definitions and Symbols The following terms and symbols are used in this documentation and also appear on the Model 1830 R Series Optical Power Meter where safety related issues occur General Warning or Caution A Figure General Warning or Caution Symbol The Exclamation Symbol in the figure above appears on the product and in Warning and Caution tables throughout this document This symbol designates that documentation needs to be consulted to determine the nature of a potential hazard and any actions that have to be taken Electric Shock Figure 2 Electrical Shock Symbol The Electrical Shock Symbol in the figure above appears throughout this manual This symbol indicates a hazard arising from dangerous voltage Any mishandling could result in irreparable damage to the equipment and personal injury or death Figure 3 CE Mark European Union CE Mark The presence of the CE Mark on Newport Corporation equip
7. 6 3 General Guidelines for Using the GPIB Port 53 6 6 4 Procedure for Reading Only New Measurements 53 7 Remote Command Set 55 7 1 Summary of Command Query Set cceceesceesseeeteceteeeeeeeenees 55 7 2 Detailed Description of Commands and Queries eeee 58 8 Troubleshooting and Maintenance 77 Preface 10 8 1 Troubleshooting Guide csvecastiskauthtacds tianlian nos Rieneaeds 77 8 2 Cleaning Procedure lt g sn aucune hie tas as i alee ied 78 8 3 Re Calibration Schedule cccccccesscecsseceesseceesseeeesseeeesseeees 78 Factory Service 79 O Introductionis ana E Aes eed a hel ae ele 79 9 2 Obtaining SeTVi Essenin aa a aaia iannis aask 79 Ded Sev e POP n a age E E A RET ates 80 Appendix A Status Reporting System 81 11 10 1 Status Reporting System ss ssesessseeseeseesssessessresressessssresseesee 81 Appendix B Block Diagram 84 11 1 Simplified 1830 R Series Functional Block Diagram 84 Preface xi List of Figures Figure 1 General Warning or Caution Symbol ccccccsseeeseceeeeeeteeeees 13 Figure 2 Electrical Shock Symbol ccscssssssssssccctesesessoesarscrcesacesersesners 13 Prone 9 CE Markoni enen na laausavatiasiaarianseaeriacabansaatoansteandasnaasiewe 13 Figure 4 Alternating Voltage Symbol secucc inten seaetadnsuns 14 Big Ore IS VOL seeren a a ae ee eres 14 Fig re 6 OT SVMDOl ss fst cel ua ia ar a tees 14 Figur
8. Acquisition is on Run ZERO ZERO is off UNITS Watts STOREF 1mWw AVG Medium Averaging AA Lowest available or last set wavelength AVY Lowest available or last set wavelength ATTN ATTN is off Detector Alone DISP Display on BEEP BEEP is off AUTO Auto Ranging enabled Table 4 1830 R Series Default Power Up Conditions 5 Performing Measurements 5 1 Introduction This section contains detailed information on how to make various optical power measurements with the 1830 R Series instrument 5 2 Photodetector Considerations This section describes detector and attenuator characteristics optical and electrical considerations and environmental influences on optical measurements In general the accuracy of measurement with the 1830 R Series Optical Power Meter is limited by the calibration accuracy of the detector calibration Making accurate measurements of optical power is however also dependent upon properly setting up the 1830 R Series instrument controlling temperature and illumination conditions and understanding the factors that affect power measurement 5 2 1 Detector Calibration and Accuracy Newport Corporation calibrates its detectors using secondary standards directly traceable to the United States National Institute of Science and Technology NIST The details and uncertainty of the calibration procedure vary with each detector model but a detailed description of the calibration results is supplied with each i
9. When using RS 232C the service request lt SRQ gt and the serial poll features are not available However the state of the status byte register can be obtained by the query Q Below is a description of each bit of the Status Byte Register PARAMETER ERROR This bit goes high whenever a valid command is issued but the command s parameters are out of range e g U9 This bit is cleared by Q or by the C command COMMAND ERROR This bit goes high whenever a bad command is sent regardless of the parameters e g H1 When the meter is in the HOLD mode good commands which try to change the measurement parameters will set this bit high This bit is cleared after an Q or by the C command SATURATION This bit goes high whenever the photodetector is saturated i e further increase in the input signal level does not cause any change in the measurement readings This bit goes low when the input signal is below the photodetector s saturation level OVER RANGE This bit goes high whenever the input signal exceeds the maximum signal level for the present signal range This bit goes low when the signal level is within range Appendix A 83 MESSAGE AVAILABLE MAV This bit goes high when any message is ready to be transmitted over the interface This bit is set only when the 1830 R GPIB is ready to respond with data for an issued query This bit goes low after the 1830 R GPIB completes sending the message BUSY
10. and P is the reference measurement At power up the reference for the REL mode is a level equivalent to 1mW This can be changed by pressing STOREF which makes the most recent measurement the new P If a relative measurement is greater than 9 999 9 the unit displays the measurement in the following format X xx y The displayed value must be interpreted as x xx 10 Similarly if a relative measurement is less than 0 01 the unit displays the measurement in the following format X xx y The displayed value must be interpreted as x xx 10 STOREF Store Reference Value Pressing STOREF causes the most recent measurement P to be stored as P for subsequent use in relative measurement calculations When the units are dB and STOREF has been pressed the displayed value is the function 10 log P P When the units are REL and STOREF has been pressed the displayed value is the ratio P P Pis always a power reading stored in the units of Watts Pressing STOREF causes a new P to overwrite the existing P value AVG AVG Numerical Averaging Pressing AVG causes the numerical averaging feature to cycle through slow S medium M and fast F modes The slow mode takes the last 16 measurements that are within 9 counts of the oldest measurement and averages them for the displayed reading The medium mode averages the last 4 measurements and the fast mode does no averaging The averaging buffer is a sliding buffer that always mai
11. corrected for during normal operation The 1830 R Series instrument will automatically disconnect the input signal from the amplifier during the auto calibration mode To achieve stable readings at the specified accuracy auto calibration should be executed after a minimum 60 minute warm up period This can be done either by resetting the 1830 R Series instrument with the RESET button on the back of the meter 1830 R GPIB only switch is not present on the Model 1830 R or by sending the auto calibration remote command O 30 Initial Setup This page is intentionally left blank 4 4 1 4 2 System Operation Introduction This section contains the information needed to operate the 1830 R Series Optical Power Meter via the front panel key pad The meanings of the display annunciators and the operation of all keys are discussed later in this section Digital Display The 1830 R Series Optical Power Meter has a large 5 digit indicators LED display which can be seen at large angles of view Figure 16 illustrates the layout of the 1830 R Series meter s display Table 2 on the following page explains the meaning of the various annunciators and messages on the display Figure 16 The 1830 R Series Display Annunciator Message Comment SN This annunciator denotes serial number and is displayed at turn on when the detector s serial number is displayed dB This annunciator specifies that dB measure
12. disabled the AUTO annunciator is turned off and the signal range is left in its present state Signal ranging can be manually controlled by the RANGE and RANGE keys as described below NOTE The 1830 R Series Optical Power Meter has 8 signal ranges R1 R8 which are one decade apart The ranges available are detector dependent For example when using the instrument with Newport s 818 IR the lowest available range is R3 This is due to the fact that this germanium detector inherently has a large noise equivalent power NEP krad Manual Range Up This key enables the user to manually decrease the amplifier gain by one decade allowing the input of larger optical signals without saturating the amplifier If the meter is in the auto range mode just prior to pressing this key the meter will be forced into the manual range mode and the range will be incremented ANCE Manual Range Down This key enables the user to manually increase the amplifier gain by one decade If the meter is in the auto range mode just prior to pressing this key the meter will be forced into the manual range mode and the range will be decremented System Operation Default Meter Configuration Upon power up or pressing the RESET button on the back of the meter the 1830 R Series Optical Power Meter will configure itself as listed in Table 4 Keypad Function Default Power Up Condition LOCAL Local R S Signal
13. few picoamps at room temperatures With uncooled germanium detectors however this dark current is on the order of a nanoamp or typically 1 000 to 10 000 times greater than silicon These dark currents can be zeroed at any moment in time via the ZERO key on the 1830 R Series instruments Since dark currents drift with temperature the ZERO should be adjusted just prior to taking any measurements The noise or drift in the dark current sets a lower bound on the measurement resolution which can be achieved with any given detector If the detector temperature is constant sensitivity changes and dark current drifts are significantly reduced In addition if the detector is cooled the dark current and dark current noise will decrease For the most accurate measurements particularly with germanium detectors the user can cool the detector to approximately 0 C and control the temperature to within 1 C Ambient and Stray Light Ambient and stray light striking the detector will be measured by the 1830 R Series instruments and should be considered when making sensitive measurements Ambient light can be distinguished from dark current or the detector meter noise floor by turning off or blocking the source and covering the detector face with an opaque material such as a piece of black metal Using the human hand to cover the detector is not advised because it emits a significant amount of infrared radiation and because it radiates a temperature
14. has generated an SRQ an AND operation could be performed on the Status Byte IF serial poll AND 64 64 THEN device is requesting service where serial poll is the integer returned from a GPIB serial poll 48 Computer Interfacing 6 3 6 4 6 4 1 Whitespace Optional between commands and between parameters Whitespace is any character with a binary value less than or equal to an ASCII space character except the lt NL gt character Numerical types Numerical parameters are passed and returned as the actual ASCII characters in the string representation of the number The 1830 R Series instrument accepts numeric values in decimal format only Entering Remote Computer Interface Mode When a command or query is received by the computer interface ports the 1830 R Series Optical Power Meter automatically goes into the remote interface mode The REM annunciator on the 1830 R Series instrument s display will light up to indicate that the instrument is in remote interface mode When in remote mode the 1830 R Series instrument can be issued a L1 command The LLO annunciator on the 1830 R Series instrument s display will also light up to indicate that the 1830 R Series instrument is in the local lockout mode This mode disables the 1830 R Series instrument s front panel keypad s ability to affect system operation Locking out the front panel keys is useful in applications where the user does not wan
15. mode state the string termination character and the back panel baud rate switch settings Check the RS 232 cable connection and cable pinouts on Figure 18 Make sure that the device talking to the meter is setup for 8 data bits no parity and 1 stop bit RS 232 communication does not seem to work GPIB communication Check the GPIB address the GPIB cable connections and errors the string termination character National Instruments IBCONF file had some other device name for DEV4 or the IBCOMF file was not configured properly for the 1830 R GPIB The QBIB OB4 file was not compiled and linked with the QuickBASIC environment To accomplish this step follow the National Instruments manual commands A program does not compile in the QuickBASIC environment C QB45 gt link q qbib obj qbib qlb bqlb45 lib C QB45 gt qb I qbib qlb The pathname for the QBDECL BAS should be modified per the user s computer system Your IEEE application Use the National Instruments IBIC program to communicate software program does with the 1830 R GPIB not seem to be to communicate with the Typical communicating with the 1830 R GPIB sequence of 41830 R GPIB operation would be as follows C gt ibic IBFIND dev4 IBWRT d n IBRD 20 Table 6 Symptom Fault Troubleshooting Guide Cleaning Procedure When cleaning the body of this instrument use only a mild soap and water solution on a damp cloth CAUTION Do not use acetone or ot
16. photodetector alone n 1 Use the calibration module s responsivity values associated with the photodetector attenuator combination integer A or PM ATT Attenuator query A or PM ATT Attenuator Query Function Syntax Returns Related Commands Reports whether the 1830 R Series Optical Power Meter is using the responsivity associated with the photodetector alone or the photodetector attenuator combination A or PM ATT 0 photodetector alone responsivities are used 1 photodetector attenuator responsivities are used An or PM ATT n Selects the responsivity associated with the photodetector alone or photodetector attenuator combination Remote Command Set 59 Bn or BEEP n Beep On Off Function Syntax Parameter Type Related Commands This command is used to turn the audio output on off The audio output frequency is proportional to the intensity of the input power signal Bn or BEEP n n 0 Beeper is off n 1 Beeper is on integer B or BEEP Beeper query B or BEEP Beeper Query Function Syntax Returns Related Commands C or CLS Reports whether the 1830 R Series Optical Power Meter is using the responsivity associated with the photodetector alone or the photodetector attenuator combination B or BEEP 0 beeper is off 1 beeper is on Bn or BEEP n Turn the beeper on off Clear Status Byte Register Function This
17. 0 OoO0O 00 Figure 19 RS 232C Baud Rate Selector Switches RS 232C Command Termination Commands and queries sent to the 1830 R GPIB through the RS 232C port must be terminated by a lt LF gt line feed All responses sent by the 1830 R GPIB are terminated with a lt LF gt line feed Computer Interfacing 51 6 5 3 6 6 6 6 1 5 4 3 General Guidelines for Using the RS 232C Port e The RS 232C port can communicate with a dumb terminal or a personal computer running any one of the many communications programs available You may also control your 1830 R GPIB using a personal computer running high level programming languages such as C NET and lab automation software such as LabVIEW e When a dumb terminal type of device is used to communicate with the 1830 R GPIB via the RS 232C the echo mode is especially useful When the Echo Mode for the RS 232C port is enabled all characters sent to the 1830 R GPIB and error messages will be echoed The 1830 R GPIB will generate a gt prompt for every line As the user enters commands the line may be edited by using the backspace key sending an ASCII decimal 08 code or by using the DEL key sending an ASCII decimal 127 code e When the 1830 R GPIB is being controlled by a high level programming language the echo mode should be disabled When the Echo mode is disabled the 1830 R GPIB does not generate a prompt or echo characters back to the interface N
18. 1 n 0 Turn auto ranging off n 1 Turn auto ranging on Integer RO Turn auto ranging on PM AUTO 1 Turn auto ranging on PM AUTO 0 Turn auto ranging off R or PM AUTO Range query 70 Remote Command Set Rn or PM RANGE m Range Setting Function Syntax Parameter Type Related Commands This command is used to set the current signal range for the input signal R1 command selects the lowest signal range for the input signal R8 selects the highest signal range As each range is incremented by one the signal gain decreases by a decade NOTE The lowest range for the Germanium 818 IR and 918D IR detectors is R3 Rn or PM RANGE m n 1 or m 0 Lowest manual signal range highest amplifier gain n 8 or m 7 Highest manual signal range lowest amplifier gain Integer R or PM RANGE Range query R or PM RANGE Signal Range Query Function Syntax Parameter Returns This query informs the user about 1830 R Series Optical Power Meter s current signal range setting NOTE The lowest range for the Germanium 818 IR and 918D IR detectors is R3 R or PM RANGE None When R command is issued to query signal range the response from power meter can vary from 1 8 When PM RANGE command is issued to query signal Remote Command Set 71 Example Related Commands range the response from power meter can vary from 0 7 Send R Resp 1 Power meter is
19. OTE The 1830 R GPIB s default mode for RS 232C communication is with echo disabled e Since the 1830 R GPIB s output buffer size is limited to sixty four 64 bytes it is recommended that when a query is made the response to that query be read before other commands are issued e Only one command query may be sent to the 1830 R GPIB per bus transaction e 1830 R GPIB system errors can be identified by reading the 1830 R GPIB s Status Byte Register See Section 10 Appendix A GPIB Communication 1830 R GPIB only A variety of third party GPIB communication hardware and software such as plug in GPIB computer boards and LabVIEW software from National Instruments are available The 1830 R GPIB should work with any of these as long as they adhere to the IEEE 488 1 standard This manual assumes the user is familiar with one of these third party hardware software packages We refer to GPIB and IEEE 488 interchangeably Setting the GPIB Address The Model 1830 R GPIB s GPIB interface port can be connected to the GPIB bus via a standard IEEE 488 cable Before communicating with the instrument s GPIB port the 1830 R GPIB s GPIB address must be set 52 Computer Interfacing Choose the appropriate GPIB address by setting the rear panel system switches to the desired address as shown in Figure 20 NOTE Cycle the power off and on or press the RESET button located at the back of the meter whenever the GPIB address is
20. Programs and Related Materials These restrictions shall not apply to information 1 generally known to the public or obtainable from public sources 2 readily apparent from the keyboard operations visual display or output reports of the Programs 3 previously in the possession of Customer or subsequently developed or acquired without reliance on the Newport Programs or 4 approved by Newport for release without restriction Trademarks The Newport logo is a registered trademark of Newport Corporation in Austria Barbados Benelux Canada the People s Republic of China Denmark France Germany Great Britain Ireland Japan the Republic of Korea Spain Sweden and the United States Newport is a registered trademark of Newport Corporation in Austria Barbados Benelux the People s Republic of China Denmark France Germany Ireland Japan the Republic of Korea Spain and Sweden Service Information This section contains information regarding factory service for the source The user should not attempt any maintenance or service of the system or optional equipment beyond the procedures outlined in this manual Any problem that cannot be resolved should be referred to Newport Corporation vi Preface Technical Support Contacts North America Europe Newport Corporation Service Dept Newport MICRO CONTROLE S A 1791 Deere Ave Irvine CA 92606 Zone Industrielle Telephone 949 253 1694 45340 Beaune la Rolande FRANCE T
21. Reporting System for the GPIB Bus The Status Byte Register is used to record a summary of the 1830 R GPIB s current condition for the Status Reporting System The status of the 1830 R GPIB is returned to the controller when a serial poll is performed The register is bit mapped meaning that each condition is represented by a bit of different binary weight 8 4 2 1 When a bit is set high has a value of 1 the condition is true The bits are cleared set to zero based on the conditions described for each bit Additionally all the bits in the Status Byte Register except for the MAV bit can be cleared by using the Clear Status Byte Register command C 82 Appendix A The Service Request Enable Register is used to define the conditions of the Status Byte Register that will generate an IEEE 488 1 service request lt SRQ gt This register performs a bit wise AND ing operation with the Status Byte Register When an event occurs that causes a bit to be set high in the Status Byte Register and its corresponding bit is set high in the Service Request Enable Register an lt SRQ gt will be generated once for the given event When the lt SRQ gt is asserted and a serial poll of the 1830 R GPIB is performed bit 6 and the bit s that initiated the lt SRQ gt will be set high in the byte returned by the serial poll A serial poll will clear the lt SRQ gt until it is again asserted by a new event in the Status Byte Register NOTE
22. This bit goes high whenever the 1830 R GPIB is in auto ranging mode and ischanging ranges when the 1830 R GPIB is in power up initialization mode or when the meter is performing an auto calibration This bit goes low whenever the above three conditions do not exist SERVICE REQUEST When the status byte is read by means of a serial poll this bit is set when the 1830 R GPIB is requesting service When the status byte is read by means of the Q query this bit will be set if any bit in the status byte is set and its corresponding bit is set in the Service Request Enable Register When the SERVICE REQUEST bit changes state from low to high the 1830 R GPIB automatically asserts a service request lt SRQ gt READ DONE This bit goes high when a new reading has been taken by 1830 R GPIB that is not an over range or did not saturate the photodetector and was not taken while ranging This bit is cleared by D or by the C command 11 Appendix B Block Diagram 11 1 Simplified 1830 R Series Functional Block Diagram A simplified block diagram of the 1830 R is shown in Figure 22 The heart of the 1830 R is a current to voltage converter followed by an A D converter that translates the conditioned analog input signals into a form usable by the microcomputer The microcomputer performs all necessary system control and calculations required to display the correct reading Range Resistors Transimpedance ne Voltage Analog Cu
23. To make relative measurements with background correction proceed as follows Select the REL measurement mode auto range and a wavelength b Block the light to be measured c Select background correction by pressing the ZERO key Display should read approximately zero but will fluctuate depending upon the variations in the amount of light reaching the detector and the detector dark current fluctuations d Illuminate the detector with the optical signal to be used as the reference signal e Press the STOREF key f Illuminate the detector with the optical signal to be measured g Take the reading from the display 5 6 Common Measurement Errors The most common sources of optical power measurement errors are listed in 0 below Type of Error What should be done Radiometry Check that all of the light is actually hitting the detector Ambient Light Check that any ambient light was ZERO ed before the measurement was made Wavelength Calibration Check that the proper wavelength has been set Detector Saturation Check that the optical power density remains below the detector s saturation threshold Meter Configuration Check that the 1830 R Series Optical Power Meter was powered up with the calibration module properly connected Check that the optical attenuator mode ATTN annunciator is properly enabled disabled Table 5 Common Measurement Errors 46 Performing Meas
24. a detailed description of the Status Reporting System Remote Command Set 67 Syntax Parameter Returns Example Related Commands O M or SRE None 000 255 Send M Resp 000 An lt SRQ gt will not be asserted Send M Resp 016 Only the MAV bit will assert an lt SRQ gt Send M Resp 255 Any bit in the Status Byte Register will assert an lt SRQ gt Mn or SRE n Service Request Enable Register Q or STB Status Byte Register query Auto Calibration Function Syntax Parameter This command is used to calibrate the 1830 R Series Optical Power Meter for future measurements The auto calibration process involves measuring amplifier offset voltages which arise from aging and temperature effects These offsets are then appropriately corrected for during normal operation The 1830 R Series instrument will automatically disconnect the input signal from the amplifier during the auto calibration mode To achieve stable readings at the specified accuracy auto calibration should be executed after a minimum 60 minute warm up period The status byte register can be used to monitor the completion of the auto calibration process because during the auto calibration the BUSY bit remains high O None 68 Remote Command Set Related Commands Q or STB Status Byte Register query Q or STB Status Byte Register Query Function Syntax Parameter Returns Exa
25. ambda None nnnn Present wavelength in nm Send W 74 Remote Command Set Related Commands Resp 633 Present wavelength is set to 633nm Wnnnn or PM Lambda nnnn Set the wavelength for measurement Zn or PM ZEROn Zero On Off Function Syntax Parameter Type Related Commands Turn the zero function on off Zero function is used for subtracting any background power levels from future measurements When it is activated the 1830 R Series Optical Power Meter uses the next power reading as its background value and it subtracts this value from any future power readings Zn or PM ZERO n n O zero function is off n 1 zero function is on Integer Z or PM ZERO Zero function query Z or PM ZERO Zero Function Query Function Syntax Parameter Returns Related This query informs the user whether 1830 R Series Optical Power Meter s zero function is on off Zero function is used for subtracting the background power levels from any future measurements Z or PM ZERO None 0 zero function is off 1 zero function is on Zn or PM ZERO n Turn the zero function on off Remote Command Set 75 Commands IDN Identification String Query Function This query will cause the instrument to return an identification string Syntax IDN Parameter None Returns Model Firmware Firmware Controller Name Version Date Serial oa SM SN a NEWPORT XXXX vYYY mm dd y
26. ancapaneaxeeecanecienscareausetnceestecauatacenueninne 31 4 3 Front Panel Key Functions s ijax5isacnsavedecestincacieenncistatlnccwieahneths 32 LOCAL 4 3 1 R S Local Mode Rut Stops cissiesssvaccaccsensacsesevesacees 34 4 3 2 ZERO Offset Subtraction gic ccsssvedsanssetscrsntectanthocass 34 4 3 3 zainke Display Wits ssis sennoina iarain 34 4 3 4 E Store Reference Value ssciscssssosassaineariacens 35 AVG 4 3 5 Numerical Averaging seseseseesseeerssresseeee 35 4 3 6 Wavelength Increment ccecceeseeeeeeeeee 35 4 3 7 Wavelength Decrement cjccccsscccssitiensieessaredes 36 ol 4 3 8 oe P ORC LAEE A E 36 4 3 9 Optical Attenuator sissssivesveveansiteentawnsdsdeincisess 36 DISP l 4 3 10 Display ON OFF ssncciccsassrercssensaeansacnaesnetieads 36 4 3 11 BEEP Audible Beeper ssccsscscecsnsnccrdesevisnsarenenntensennness 37 AUTO a 4 3 12 Automatic Signal Ranging eee 37 RANGE 4 3 13 W ES Manual Range Up e scccccssccsstessssessssteeeeeee 37 Preface ix RANGE 4 3 14 y Manual Range Down ccccesseeeteeeteeesees 37 4 4 Default Meter Configuration sims icccissscexpvarndeseshigessetiteessehiaxwstands 38 5 Performing Measurements 39 SN Introduction essiri E R A EREA 39 5 2 Photodetector Considerations cceccceeseeeseeeeeeceteceeeeeeeeeeseees 39 5 2 1 Detector Calibration and Accuracy ccceseeeeeeeseeteee 39 5 2 2 Quantum Detector Temperature Effects 40 5 2 3 Ambient and Stray Ligh
27. and a serial poll of the 1830 R GPIB is performed bit 6 and the 66 Remote Command Set Syntax Parameter Type Example Related Commands bit s that initiated the lt SRQ gt will be set high in the byte returned by the serial poll A serial poll will clear the lt SRQ gt until it is again asserted by a new event in the Status Byte Register At power up the default is MO which means that the lt SRQ gt will not be asserted regardless of any bits that are set in the Status Byte Register See Appendix A Status Reporting System for a detailed description of the Status Reporting System Read Done Mask Not Used Busy Mask Message Available MAV Mask Parameter Error Mask Command Error Mask Saturation Mask Over Range Mask Mn or SREn n 0 255 Integer MO An lt SRQ gt will not be asserted M16 Only the MAV bit will assert an lt SRQ gt M255 Any bit in the Status Byte Register will assert an lt SRQ gt M or SRE Service Request Enable Register query Q or STB Status Byte Register query M or SRE Service Request Enable Register Query Function This query informs the user how the Service Request Enable Register is configured See the Mn command for a description of the Service Request Enable Register At power up the default is MO which means that the lt SRQ gt will not be asserted regardless of any bits that are set in the Status Byte Register See Appendix A for
28. carshocestussuaes coeaoeceesdaceeeeuoaceoates 16 1 2 2 Generale Aut Onset cwhotii it sane oui are eee 16 1 2 3 Summary of Warnings and Cautions ceceeeeseereees 17 1 3 Location of Labels and Warnings ccccecsceesseceteceseeeeeeensees 19 1 3 1 Rear Panel Model 1830 R oo cece ceeceeseeteeeteeeteeeees 19 1 3 2 Rear Panel Model 1830 R GPIB cecceceeeteeeeeeees 20 2 General Information 21 2A System Oyeryie W denria ind oda set Aa ak eae Aa ewe Aes 21 22 Scope or this Mangaliisce apici rentei i a n i a 21 2 3 Unpacking and Inspection ss seseseessesesseesseserssressessessressessessees 22 2 4 Preparation for WISE siner na En AEE A ARAE R 22 QDs Definitionsesnrenerer eea ae a Aa a 22 26 Specitications ese hahisps2icts ait EAR T als ine Pa Sera dee 23 viii Preface 2 7 Measurement Modes lt csseccescscesuxnesneudsnsannccendensetnacbsntentannnsentencctteats 25 Initial Setup 27 Del Tntrod ctio icccsacsrssesecunsesnssescesensunepeannescteessaveraineestanwescsuenesciuens 21 3 2 Setting the Line Voltage Selector SWitch hw eee eeeeeeeeteeneeees 27 3 3 Detector Connection and Setup sccissesscivesaiievanrevarevservosvenssvuerne tases 28 3 4 Configuring the Computer Interface 1830 R GPIB only 28 3 5 Power Up 7 Auto Calibration ss cscsnusssesiarscsciweissteenaeisesddincscuSoseunes 28 System Operation 31 41 Tatr dUCt n s snini eer Eaa EAT EE REEE A EAE i 31 4 2 Digital TNS ay cc sc
29. ce and the instrument s power up and auto calibration Setting the Line Voltage Selector Switch The 1830 R Series Optical Power Meter operates with line frequencies of both between 50 and 60 Hz It can be configured to operate with line voltages of 100 120 VAC or 220 240 VAC Before turning the meter on configure it to the local voltage by setting the voltage selection switch on the 1830 R Series instrument s back panel to match the nominal local voltage The 115 V position should be used for nominal line voltages between 100 and 120 VAC the 230V position should be used for nominal line voltages between 220 and 240 VAC See Figure 14 Plug the AC line power cord to the rear of the 1830 R Series instrument and then connect the cord to AC power 100 120 220 240V 50 60 Hz MAX POWER 40W Figure 14 Line Voltage Selection Switch 28 Initial Setup 3 3 3 4 3 5 WARNING This product is equipped with a 3 wire grounding type plug Any interruption of the grounding connection can create an electric shock hazard If you are unable to insert the plug into your wall plug receptacle contact your electrician to perform the necessary alterations to assure that the green green yellow wire is attached to earth ground Detector Connection and Setup Connect the detector to the DB15 connector on the front panel of the Model 1830 R Series Optical Power Meter The backshell of the detector s connector contains an EEPROM wi
30. changed RS232c Not GPIB Address Used GPIB Bus SW S5 Address 1 r4 0 0 1 0 0 Default GPIB Address 4 I E bi i i i j RR M M M OOO OO OO COCO CO COCO CO CO ClO m i i i OO CC COC OC Oe ee ee eS eS S OO OC Figure 20 GPIB Address Selector Switches Computer Interfacing 53 6 6 2 6 6 3 6 6 4 GPIB Command Termination Commands and queries sent to the 1830 R GPIB through the GPIB bus should be terminated by sending an lt NL gt lt EOI gt lt NL gt is equivalent to an lt LF gt All responses sent by the 1830 R GPIB are terminated with the concurrent transmission of a lt NL gt lt EOP General Guidelines for Using the GPIB Port The GPIB port can communicate with computers and other devices that have GPIB ports that follow the IEEE 488 1 standards Third party add on boards and software can be used to allow a personal computer to communicate with the 1830 R GPIB through the IEEE 488 port With these add on boards and software high level language programs can also be written to control the 1830 R GPIB through the IEEE 488 port For those who wish to minimize the need for conventional programming Newport provides free instrument driver software for plug in and run compatibility with LabVIEW Call Newport for more information Some of the issues which should be kept in mind while developing the IEEE 488 software interface for the 1830 R GPIB are as follows e A query is a command that invokes a response
31. command is used to clear the status byte register All bits except the MAV bit are set low by sending this command The status byte register contents are described in Q or STB command and Appendix A Status Reporting System 60 Remote Command Set Syntax Parameter Related Commands C or CLS None Q or STB Status Byte Register query D or PM Power Data Query Function This query responds with the power level of the input signal Syntax D or PM Power Parameter None Returns The format of the returned data string is d ddddE dd Example Send D Resp 0 0000E 09 Related An A Set query the attenuator setting Commands Rn R Set query the range setting Un U Set query the units of measurements En or ECHO n Echo Mode On Off Function This command is used to turn the power meter s echo mode on off The echo mode applies to RS 232C communication only In this mode all the characters that are received over the RS 232C are transmitted echoed back to the user This mode is useful when interfacing the 1830 R GPIB to a dumb terminal Syntax En or ECHO n Parameter n 0 Turn the echo mode off n 1 Turn the echo mode on Remote Command Set 61 Type Related Commands Integer E or ECHO Echo mode query E or ECHO Echo Mode Query Function Syntax Parameter Returns Related Commands This query informs the user whether the power meter s echo mode
32. ct must not be disposed with regular waste Instead it is the user responsibility to dispose of waste equipment according to the local laws The separate collection and recycling of the waste equipment at the time of disposal will help to conserve natural resources and ensure that it is recycled in a manner that protects human health and the environment For information about where the user can drop off the waste equipment for recycling please contact your local Newport Corporation representative Control of Hazardous Substances RoHS Compliant Figure 11 RoHS Compliant Symbol This label indicates the products comply with the EU Directive 2002 95 EC that restricts the content of six hazardous chemicals Warnings and Cautions The following are definitions of the Warnings Cautions and Notes that are used throughout this manual to call your attention to important information regarding your safety the safety and preservation of your equipment or an important tip 16 Safety Precautions 1 2 1 1 2 2 WARNING Situation has the potential to cause bodily harm or death CAUTION Situation has the potential to cause damage to property or equipment NOTE Additional information the user or operator should consider General Warnings Observe these general warnings when operating or servicing this equipment Heed all warnings on the unit and in the operating instructions Do not use this equipment in or near wate
33. e 7 FUSE Symbol cnneren onneani iii aeia eiaa 14 Fig re 8 USB Symbol ie isieeiii iseasi siasis ritik en es pteatags tras is raieieti itaas tanei 14 Figure 9 Frame or Chassis Terminal Symbol sssseseesesseeeesseseesessesseseese 15 Figure 10 WEEE Directive Symbol essessseesssesessesseseesesseseessssersesseseesessese 15 Figure 11 RoHS Compliant Symbol sssssenneesesseesesseesseessesessssessesersseessessess 15 Figure 12 Rear Panel Labels and Warnings lt 2 4 30i4ssecscevacescideasscsdiederatccessees 19 Figure 13 Model 1830 R GRIB sssssssssessssessssssrssstsrtsessesersseseesesseseesesseseeses 20 Figure 14 Line Voltage Selection Switch s sesessessesessseseesesseseesesseseesees 27 Figure 15 Calibration Module Connector Port sssssessesseeeesseseesessesersessee 28 Figure 16 The 1830 R Series Display 0 cceccceccceeseesteceseeeeeeeeseeesseenteenees 31 Figure l7 Front Panel Key Pad co sich ac aayas ea antey anea a aa 33 Figure 18 RS 232 Cable Connectors iin c ssiscisseectsssaasecoistiscrasveareerectaecascateceys 49 Figure 19 RS 232C Baud Rate Selector Switches cceeeeseeseereeeeeeeeeeeee 50 Figure 20 GPIB Address Selector Switches c ccsscsscesseesecseeeeeeeeceeeceeees 52 Figure 21 The 1830 R GPIB s Status Reporting System for the GPIB Bus 81 Figure 22 Simplified Functional Block Diagram seseesseeeeeeessesesessesesse 84 List of Tables Table 1 Measurement Modes is 2 s secs
34. elationship dB reading 10 log Net Applied Power Net Referenced Power STOREF 10 log I L R srorer 1 R where I detector input current I detector background current defined when the ZERO key was pressed Istorer referenced detector current defined when the STOREF key was pressed R responsivity of the detector A W or detector with attenuator To make dB measurements with background correction proceed as follows Select the dB measurement mode auto range and a wavelength b Block the light to be measured c Initiate background correction by pressing the ZERO key Display should read approximately zero but will fluctuate depending upon the variations in the amount of light reaching the detector and the detector dark current fluctuations d Illuminate the detector with the optical signal to be used as the reference signal e Press the STOREF key 44 Performing Measurements 5 5 2 2 5 5 3 f g Illuminate the detector with the optical signal to be measured Take the reading from the display Logarithmic Measurements Using 1 mW Reference dBm The dBm measurement mode displays the absolute value of 10 times the logarithm base 10 of the input power referenced to ImW The following equation illustrates this relationship dBm reading 10 log Net Applied Power ImW 10 log I R 1 mW where I detector input current Iz detector background current de
35. elephone 800 222 6440 x31694 Telephone 33 02 38 40 51 56 Asia Newport Opto Electronics Technologies HE beth SAR 2535 8354 32 C l Hb4 200131 253 Aidu Road Bld 3 Fir 3 Sec C Shanghai 200131 China Telephone 86 21 5046 2300 Fax 86 21 5046 2323 Newport Corporation Calling Procedure If there are any defects in material or workmanship or a failure to meet specifications promptly notify Newport s Returns Department by calling 1 800 222 6440 or by visiting our website at www newport com returns within the warranty period to obtain a Return Material Authorization Number RMA Return the product to Newport Corporation freight prepaid clearly marked with the RMA and we will either repair or replace it at our discretion Newport is not responsible for damage occurring in transit and is not obligated to accept products returned without an RMA E mail rma service newport com When calling Newport Corporation please provide the customer care representative with the following information Your Contact Information Serial number or original order number Description of problem i e hardware or software To help our Technical Support Representatives diagnose your problem please note the following conditions Is the system used for manufacturing or research and development What was the state of the system right before the problem Have you seen this problem before If so how often Can the system con
36. ely via the USB interface or RS 232C or IEEE 488 GPIB interfaces Model 1830 R GPIB only The 1830 R Series is designed to take continuous wave optical power measurements and is compatible with all of Newport s 818 and 918D Series Semiconductor photodetectors Newport detectors for use with the 1830 R Series have an internal EEPROM chip in which the responsivities and other information unique to the detectors is stored Scope of this Manual Please carefully read this instruction manual before using the 1830 R Series Optical Power Meter Be especially careful to observe the warnings and cautions throughout this manual see Safety Symbols and Terms If any operating instructions are not clear contact Newport Corporation This instruction manual contains the necessary information for operation and maintenance of the 1830 R Series Optical Power Meter as well as information for troubleshooting and obtaining service if necessary This information is divided into the following sections Section 1 Safety Precautions Section 2 General Information Section 3 Initial Setup Section 4 System Operation Section 5 Performing Measurements Section 6 Computer Interfacing Section 7 Remote Command Set Section 8 Troubleshooting and Maintenance Section 9 Factory Service Section 10 Appendix A Status Reporting System Section 11 Appendix B Block Diagram 22 General Information 2 3 2 4 2 5 Unpacking and Inspection All 1830 R S
37. er Meter is in Hold mode 1 Power Meter is in Run mode Gn or PM RUN n Set power meter to either Run Hold mode Kn or DISP BRIGHT n Display On Off Function Syntax This command is used to turn the display on off The power meter will continue to take measurements when the display is turned off Kn or DISP BRIGHT n 64 Remote Command Set Parameter n 0 Turns the display off An LED at the left bottom corner of the display will be flashed in this state to inform the user that the unit is taking measurements n 1 Turns the display on Type Integer Related K or DISP BRIGHT Query the display state Commands K or DISP BRIGHT Display State Query Function This query responds with the current status of 1830 R Series instrument s display The display can be turned on off Syntax K or DISP BRIGHT Parameter None Returns 0 display is off 1 display is on Related Kn or DISP BRIGHT n Turn the display on off Commands Ln or LOCALn Local lockout On Off Function This command is used to enable disable the 1830 R Series instrument s local lockout function When the local lockout function is enabled any front panel key presses would have no effect on system operation The instrument s front panel display has a LLO annunciator and it lights up when the local lockout function is enabled This feature is useful when conducting an experiment and the user does not want inadvertent ke
38. eries meters are carefully assembled tested and inspected before shipment Upon receiving this instrument check for any obvious signs of physical damage that might have occurred during shipment Report any such damage to the shipping agent immediately NOTE Retain the original packing materials in case reshipment becomes necessary Preparation for Use The 1830 R Series Optical Power Meter should have some basic operations performed before measurements are made These include Setting the Line Voltage Selector Switch Section 3 2 Detector Connection and Setup Section 3 3 Definitions A amps ADC analog to digital converter BNC standard coaxial connector type degree C degrees Centigrade Hz Hertz cycles per second k kilo 10s kHz kilohertz kQ kilo ohms u micro 10 m milli 10 mA milliamps mV millivolts n nano 10 nA nanoamps General Information 23 2 6 nm nanometers RH relative humidity S N serial number pA microamps ys microseconds V volts WwW watts Specifications Dimensions 4 1 x 7 5 x 8 6 in 104 x 191 x 218 mm Weight 4 5 Ib 2 0 kg Enclosure Metal case painted Detector 15 pin D Sub Receptacle Analog Output BNC Connectors RS 232 9 pin D Sub Plug GPIB 24 Conductor D USB Standard USB B device Power 100 120 220 240 VAC 10 50 60 Hz Absolute Maximum Line Current Ratin
39. fined when the ZERO key was pressed R responsivity of the detector A W or detector with attenuator Using this 1mW reference power the dBm reading span is from 90 dBm to 10 dBm 1 pW to 10 mW when the detector responsivity equals 1 A W To make dBm measurements relative to 1 mW optical power with background correction proceed as follows a b c d e Select the dBm measurement mode auto range and a wavelength Block the light to be measured Initiate background correction by pressing the ZERO key Display should read approximately zero but will fluctuate depending upon the variations in the amount of light reaching the detector and the detector dark current fluctuations Illuminate the detector with the optical signal to be measured Take the reading from the display Relative Measurements The relative mode REL is selected by pressing the UNITS key until the REL annunciator turns on The referenced power is selected at any time by pressing the STOREF key The following equation illustrates this relationship REL reading Net Applied Power Net Referenced Power STOREF I I R Ustorer L R where I detector input current Performing Measurements 45 I detector background current defined when the ZERO key was pressed I referenced detector current defined when STOREF the STOREF key was pressed R responsivity of the detector A W or detector with attenuator
40. from the 1830 R GPIB All queries are terminated with a question mark e Since the 1830 R GPIB s output buffer size is limited to sixty four 64 bytes it is recommended that the response to a query be read before other commands are issued e Before reading the response the MAV bit in the status byte should be checked by means of a serial poll to make sure that the data is available See Appendix A Status Reporting System e Only one command query may be sent to the 1830 R GPIB per bus transaction Procedure for Reading Only New Measurements When you want to retrieve only new measurements from the GPIB bus use the following sequence of commands serial polls and queries 1 Send the Command C this will clear the status byte register 2 Serial Poll the 1830 R GPIB until the Read Done bit goes high decimal 128 3 Send the Query D this is a Data Query and responds with the last signal acquisition 4 Serial Poll until the Message Available MAV bit goes high decimal 16 Perform a GPIB read 54 Computer Interfacing This page is intentionally left blank 7 7 1 Remote Command Set Summary of Command Query Set The following commands and queries are case insensitive When using 1830 C compatible commands no spaces are allowed between the letter command and the parameter or question mark When using 1936 C compatible commands a space is required between command and its parameter The comma
41. g 200 mA Fuse 0 25A 250VAC Slow Blow Signal Ranges Up to 8 decades Display 4 5 digit 7 segment Display Update Rate 75 ms Auto Ranging Time 200 ms typical GPIB Bus Transfer Time 10 ms typical Operating Environment Temperature 5 to 40 degree C Relative Humidity lt 80 RH noncondensing for temperatures up to 31 degree C decreasing linearly to 50 RH noncondensing at 40 degree C Altitude lt 2000m Pollution Degree 2 Indoor use only Storage Environment Compatible Detectors 20 to 60 degree C lt 90 RH noncondensing 24 General Information Signal Range 0 1 2 3 4 5 6 7 Full Scale Current 2nA 20nA 200 nA 2 yA 20 pA 200pA 2 mA 10 mA Gain 1000M 100M 10M 1M 100 k 10k 1k 100 Resolution 0 1 pA 1 pA 10pA 100 pA 1 nA 10nA 100 nA 1 pA Analog Bandwidth 40 Hz 40 Hz Ne 2 kHz 7 kHz 17 kHz 10 kHz 20 kHz 4 Full Scale Accuracy 0 13 0 13 0 13 0 13 0 13 0 13 0 13 0 13 Typical Full Scale A j pstele Accuracy 0 25 0 25 0 25 0 25 0 25 0 25 0 25 0 25 Worst Case Listed signal ranges specify meter capability Available signal ranges are detector dependent Maximum measurable signal is detector dependent See description of detector saturation message SA in Table 2 Full scale current may vary due to the Auto Calibrat
42. her organic solvents on the 1830 R Series Optical Power Meter Organic solvents attack the ABS plastic case Re Calibration Schedule The 1830 R Series Optical Power Meter calibration accuracy is warranted for a period of 1 year After 1 year the meter should be returned to Newport Corporation for re calibration and NIST traceability recertification Newport detectors also require recertification at one year intervals 9 9 1 9 2 Factory Service Introduction This section contains information regarding obtaining factory service for the 1830 R Series Optical Power Meter The user should not attempt any maintenance or service of this instrument and or accessories beyond the procedures given in Section 8 Troubleshooting and Maintenance Any problems which cannot be resolved using the guidelines listed in Section 8 should be referred to Newport Corporation factory service personnel Contact Newport Corporation or your Newport representative for assistance The 1830 R Series Optical Power Meter contains no user serviceable parts Its calibration accuracy is warranted for a period of 1 year Obtaining Service To obtain information concerning factory service contact Newport Corporation or your Newport representative Please have the following information available 1 Instrument model number On front panel 2 Instrument serial number On rear panel 3 Description of the problem If the instrument is to be returned to Newpo
43. ignal range until the OL message goes away SA This message indicates that the input signal level exceeds the specified saturation current of the detector being used with the meter This level is detector dependent CAL This message indicates that the meter is currently performing an auto calibration The auto calibration process involves measuring amplifier offset voltages See Section 3 5 for more details Table 2 1830 R Series Display Annunciators Messages Front Panel Key Functions The front panel key pad of the 1830 R Series Optical Power Meter Figure 17 provides access to all the basic measurement functions Table 3 and Sections 4 3 1 through 4 3 14 list and describe in detail each key function For power up default conditions please see Table 4 at the end of this section System Operation Oo LOCAL R S l O Ded ia some D G Figure 17 Front Panel Key Pad Remote Pp Keypad Command Description LOCAL LO Enables local mode R S G0 G1 Run Stop signal acquisition ZERO Z0 Z1 Zero the display by subtracting the present reading from all subsequent readings UNITS U1 U4 Cycles between the four available measurement units Watt dB dBm Relative ATOREF S Stores last measurement for future dB or relative measurements AVG F1 F3 Cycles between Slow Medium or Fast numerical averaging of readings that are within a certain percentage of each other
44. in the lowest signal range Send PM RANGE Resp 0 Power meter is in the lowest signal range Rn or PM RANGE m Set the power meter signal range S or PM REF STORE Store Reference Function Syntax Parameter Related Commands Sets the current input signal power level as the power reference level for any future dB or relative measurements Each time the S command is sent the current input signal becomes the new reference level S or PM REF STORE None Un or PM UNITS Set the units of measurement Un or PM UNITS m Units Function Syntax Parameter This command is used to set the units of measurements The units can be either Watts dB dBm or REL The definitions for the units are given in Section 2 7 Un or PM UNITS m n 1 or m 2 Measurement unit is Watts n 2 or m 9 Measurement unit is dB n 3 or m 6 Measurement unit is dBm n 4 or m 12 Measurement unit is REL 72 Remote Command Set Type Example Related Commands integer U1 Measure the input signal in Watts PM UNITS 2 Measure the input signal in Watts U2 Measure the input signal in dB PM UNITS 9 Measure the input signal in dB U Query the present measurement units S Set the reference signal power level Wnnnn Set the wavelength of measurement U or PM UNITS Units Query Function Syntax Parameter Returns Example This query informs the user about 1830 R Series Optical Power Meter
45. ing the warranty period the product will either be repaired or replaced at Newport s option To exercise this warranty write or call your local Newport office or representative or contact Newport headquarters in Irvine California You will be given prompt assistance and return instructions Send the product freight prepaid to the indicated service facility Repairs will be made and the instrument returned freight prepaid Repaired products are warranted for the remainder of the original warranty period or 90 days whichever first occurs Limitation of Warranty The above warranties do not apply to products which have been repaired or modified without Newport s written approval or products subjected to unusual physical thermal or electrical stress improper installation misuse abuse accident or negligence in use storage transportation or handling This warranty also does not apply to fuses batteries or damage from battery leakage THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE NEWPORT CORPORATION SHALL NOT BE LIABLE FOR ANY INDIRECT SPECIAL OR CONSEQUENTIAL DAMAGES RESULTING FROM THE PURCHASE OR USE OF ITS PRODUCTS First printing 2011 2011 by Newport Corporation Irvine CA All rights reserved No part of this manual may be reproduced or copied without the prior written approval of Newport Corporation This ma
46. ion compensation of amplifier DC offsets After 60 minute warm up followed by execution of an Auto Calibration command Analog Output Full Scale Voltage Full Scale Accuracy Maximum AC Noise open input Range 0 6 2 V into 1 MQ 1 V into 50 Q Range 7 1 V into 1 MQ 0 5 V into 50 Q Range 0 6 0 5 Range 7 1 Range 0 lt 4 mVp p Ranges 1 7 lt 1 mVp p General Information 25 2 7 Measurement Modes Display Calculation Display Unit Comment I f W ZERO Disabled R I I W ZERO Enabled R I 10 logy dBm ZERO Disabled R l1mW I I 10 log _ dBm ZERO Enabled R l1mW I 10 log dB ZERO Disabled I stoREEE I I 10 log gt dB ZERO Enabled STOREEF I I REL ZERO Disabled I stoREEF I I Isrorrer 7 Lz REL ZERO Enabled Where detector current lz detector background current defined when the ZERO key was pressed R responsivity of the detector A W Istorer referenced detector current defined when the STOREF key was pressed Table 1 Measurement Modes 26 General Information This page is intentionally left blank 3 3 1 3 2 Initial Setup Introduction This section contains information on how to configure the 1830 R Series Optical Power Meter to your local line voltage and how to connect the detector and calibration module to the meter It also includes a short discussion about the remote interfa
47. is on or off When the echo mode is on then all the characters that are received over the RS 232C are transmitted back to the user E or ECHO None 0 echo mode is off 1 echo mode is on En Turn the echo mode on off Fn or PM DIGITALFILTER n Filter Function Syntax Parameter Type This command is used to set how many measurements are averaged for the displayed reading When the slow speed filter is selected the 1830 R Series instrument displays the average of the last 16 measurements When using the medium filter the 1830 R Series instrument displays the average of the last 4 measurements The fast filter does no averaging Fn or PM DIGITALFILTER n n 1 use the slow filter to average the last 16 me n 2 n 3 Integer 62 Remote Command Set Related Commands F or PM DIGITALFILTER Filter status query F or PM DIGITALFILTER Filter Status Query Function Syntax Parameter Returns Related Commands This query informs the user about the current settings for the filter parameter The filter setting dictates how many measurements are averaged for the displayed reading In the slow mode the reading is the average of the last 16 measurements while in the medium mode the reading is the average of the last 4 measurements No averaging is done in the fast mode F or PM DIGITALFILTER None 1 The readings are being averaged in slow mode 2 The readings are being averaged in med
48. itive devices when handling this equipment This product should only be powered as described in the manual There are no user serviceable parts inside the Model 1830 R Series Optical Power Meter e Adhere to good laser safety practices when using this equipment 1 2 3 Summary of Warnings and Cautions The following general warning and cautions are applicable to this instrument WARNING Before operating the Model 1830 R Series Optical Power Meter please read and understand all of Section 1 WARNING Do not attempt to operate this equipment if there is evidence of shipping damage or you suspect the unit is damaged Damaged equipment may present additional hazards to you Contact Newport technical support for advice before attempting to plug in and operate damaged equipment WARNING To avoid electric shock connect the instrument to properly earth grounded 3 prong receptacles only Failure to observe this precaution can result in severe injury WARNING Do not replace the AC Mains power line cord with an inadequately rated one WARNING The Model 1830 R Series Optical Power Meter must be configured for the correct AC Mains power line voltage Setting the instrument to the wrong line voltage may damage the unit Such damage may not be covered by the product s warranty 18 Safety Precautions WARNING Before cleaning the enclosure of the Model 1830 R Series Optical Power Meter the AC power cord must be disco
49. ium mode 3 The readings are not being averaged Fn or PM DIGITALFILTER n Set how many measurements are averaged for the displayed reading Gn or PM RUN n Go On Off Function Syntax This command is used to enable disable the 1830 R Series Optical Power Meter from taking new readings During disable mode no 1830 R Series instrument parameters can be changed NOTE Run and Go words are used interchangeably and they represent the same 1830 R Series instrument function Stop and Hold words are used interchangeably and they represent the same 1830 R Series instrument function Gn or PM RUN n Remote Command Set 63 Parameter Type Related Commands n O Power Meter is in Hold mode i e does not take new readings n 1 Power Meter is in Go mode i e takes new readings Integer G or PM RUN Go query G or PM RUN Go Query Function Syntax Parameter Returns Related Commands This query informs the user whether the 1830 R Series Optical Power Meter is in the Run or Hold mode If the meter is in the Run mode the 1830 R Series instrument will continue acquiring new measurements In the Hold mode it stops acquiring new measurements NOTE Run and Go words are used interchangeably and they represent the same 1830 R Series instrument function Stop and Hold words are used interchangeably G or PM RUN None 0 Pow
50. ment means that this instrument has been designed tested and certified compliant to all applicable European Union CE regulations and recommendations 14 Safety Precautions 1 1 4 1 1 5 1 1 6 1 1 7 1 1 8 Alternating voltage symbol F Figure4 Alternating Voltage Symbol This international symbol implies an alternating voltage or current On Figure5 On Symbol The symbol in the figure above represents a power switch position on a Model 1830 R Series Optical Power Meter This symbol represents a Power On condition Off Figure6 Off Symbol The symbol in the figure above represents a power switch position on the Model 1830 R Series Optical Power Meter This symbol represents a Power Off condition Fuses _ 7 Figure 7 Fuse Symbol The symbol in the figure above identifies the fuse location on the Model 1830 R Series Optical Power Meter USB lt Figure 8 USB Symbol The symbol in the figure above identifies the USB connector location on the Model 1830 R Series Optical Power Meter Safety Precautions 15 1 1 10 1 1 11 1 2 Frame or Chassis Figure9 Frame or Chassis Terminal Symbol The symbol in the figure above appears on the Model 1830 R Series Optical Power Meter This symbol identifies the frame or chassis terminal Waste Electrical and Electronic Equipment WEEE Figure 10 WEEE Directive Symbol This symbol on the product or on its packaging indicates that this produ
51. ments are being displayed dBm This annunciator specifies that dBm measurements are being displayed This annunciator specifies that relative measurements REL f are being displayed WwW This annunciator specifies that measurements in units of watts are being displayed 32 System Operation 4 3 mW This annunciator specifies that measurements in units of milliwatts are being displayed pW This annunciator specifies that measurements in units of microwatts are being displayed nw This annunciator specifies that measurements in units of nanowatts are being displayed This annunciator indicates nanometer whenever the nm ae wavelength is displayed ATTN The responsivity in use includes the effect of the detector s OD3 attenuator AUTO Automatic signal ranging is activated ZERO Background signal subtraction zeroing is activated No new readings will be displayed nor be available HOLD on the remote interface bus REM The meter has received a command query either through the USB IEEE 488 or the RS 232C bus LLO The meter has been set to local lockout from the remote interface bus and will not respond to any front panel keys AVG SMF Either Slow Medium or Fast numerical averaging for the displayed measurement is activated OL This message indicates that the input signal level exceeds the capability of the present signal range Either use auto ranging or increment the s
52. mple Reports the value of 1830 R Series Optical Power Meter s status byte This query informs the user about 1830 R Series instrument s current system status All bits in the status byte register except the MAV bit can be cleared using the clear status command C See Appendix A for a detailed description of each bit and the Status Reporting System Parameter Error Command Error Saturation Over Range Message Available MAV Busy Service Request Read Done See Appendix A Status Reporting System for details Q None 0 255 Send Q Resp 01 Parameter error Send Q Resp 02 Command error Send Q Resp 04 Input signal has saturated the photodetector Send Q Remote Command Set 69 Related Commands Resp 8 Input signal exceeds the max level for signal range Send Q Resp 16 1830 C is ready with the response to a query Send Q Resp 32 1830 C is busy auto ranging or is in power up state Send Q Resp 128 1830 C is ready with new power reading Send Q Resp 144 A new power reading is available and MAV bit is high All commands and queries RO or PM AUTOn Auto Range Function Syntax Parameter Type Example Related Commands This command is used to enable the 1830 R Series Optical Power Meter s auto ranging mode In the auto ranging mode the meter automatically switches between various signal ranges in response to input signal variations RO or PM AUTO
53. ndividually calibrated detector In general detector calibration uncertainty varies with wavelength Each detector will have some variation in the response over different sections of its surface Therefore for the most reproducible measurements light should illuminate the detector as uniformly as possible over 80 of the detector s active area CAUTION Avoid focusing a light source onto the detector surface Inaccurate readings and possible detector damage may result Consult your detector manual for information on detector saturation or damage thresholds NIST traceability recommends that detectors be re calibrated on one year intervals As individual detector responses change with time especially in the ultraviolet spectral range re calibration is necessary to assure confidence 40 Performing Measurements 5 2 2 5 2 3 in the accuracy of the measurement The same detector should always be used for measurements which are to be directly compared in order to obtain reproducible results Quantum Detector Temperature Effects Semiconductor based photodiode detector characteristics For example Newport s 818 and918D Series detectors are significantly affected by temperature At longer wavelengths these quantum detectors typically lose sensitivity with increasing temperature However the detector dark current increases exponentially with temperature For silicon detectors dark current is generally on the order of a
54. nds MUST contain all of the letters shown in upper case lower case letters in the commands are optional and may be used for clarity Only one command query is allowed per bus transaction Cae Command Description irae ompauite Command Command AO Attenuator off PM ATT 0 Al Attenuator on PM ATT 1 A Attenuator query returns 0 1 PM ATT BO Beep off BEEP 0 Bl Beep on BEEP 1 B Beep query returns 0 1 BEEP C Clear Status Byte Register CLS D Data Query PM Power EO Echo off ECHO 0 El Echo on ECHO 1 E Echo query returns 0 1 ECHO Fl Filter S Slow PM DIGITALFILTER 1 F2 Filter M Medium PM DIGITALFILTER 2 F3 Filter F Fast PM DIGITALFILTER 3 F Filter query returns 1 2 3 PM DIGITALFILTER GO Hold PM RUN 0 56 Remote Command Set Gl Go PM RUN 1 G Go query returns 0 1 PM RUN KO Display off DISP BRIGHT 0 Kl Display on DISP BRIGHT 1 K Display query returns 0 1 DISP BRIGHT LO No local lockout LOCAL 0 Ll Local lockout LOCAL 1 L Local lockout query returns 0 LOCAL 1 M Service Request Enable Register SRE Mask M Service Request Enable Register SRE Query O Auto calibration O Q Status Byte Register Query STB returns 0 255 See Appendix A Status Reporting Parameter Error f System for details Command Error
55. ngth A Power This key turns the power to the 1830 R Series Optical Power Meter ON and OFF To turn the meter ON depress the key until it clicks To turn the meter OFF press the key again until it clicks and rebounds to its original position ATTN ATTN Optical Attenuator This key selects whether the responsivity value for the detector alone or the value for the detector with attenuator is used When the attenuator mode is on the ATTN annunciator is lit and the responsivity value for the detector with attenuator is used When the attenuator mode is off the ATTN annunciator is off and the detector alone responsivity value is used DISP Display ON OFF This key cycles the display between OFF and ON When the display is off a dot LED blinks to show that the unit is active but the display is off System Operation 37 4 3 11 4 3 12 4 3 13 4 3 14 BEEP Audible Beeper This key turns the variable frequency beeper on and off The frequency of this tone varies as a function of the optical power being measured The real time audible feedback is very helpful when trying to maximize optical through put AUTO Automatic Signal Ranging This key enables and disables the auto range feature When auto range is enabled the AUTO annunciator is displayed and the amplifier gain in the 1830 R Series instrument will be automatically controlled to maximize the analog to digital converter resolution When auto range is
56. nnected from the wall socket CAUTION There are no user serviceable parts inside the Model 1830 R Series Optical Power Meter Work performed by persons not authorized by Newport Corporation will void the warranty For instructions on obtaining warranty repair or service please refer to Section 9 WARNING If this equipment is used in a manner not specified in this manual the protection provided by this equipment may be impaired WARNING This instrument is intended for use by qualified personnel who recognize shock hazards or laser hazards and are familiar with safety precautions required to avoid possible injury Read the instruction manual thoroughly before using to become familiar with the instrument s operations and capabilities WARNING The American National Safety Institute ANSI states that a shock hazard exists when probes or sensors are exposed to voltage levels greater than 42VDC or 42V peak AC Do not exceed 42V between any portion of the Model 1830 R Series Optical Power Meter or any attached detector or probe and earth ground ora shock hazard will result CAUTION The Model 1830 R Series Optical Power Meter is designed to be safe when operated under Normal Environmental Conditions as defined in EN61010 1 2010 Operation under harsher environmental conditions can result in severe injury Safety Precautions 19 The Model 1830 R Series Optical Power Meter is intended for use in an industrial laborat
57. ntains 16 or 4 measurements depending on the mode Initially the buffer is completely filled with the same measurement and thereafter subsequent measurements replace the older measurements in the buffer If at any time a single measurement is acquired that is not within 9 counts of the oldest measurement the averaging algorithm starts over not retaining any of the previous measurements Wavelength Increment Pressing this key once causes the wavelength to be displayed If the key is pressed again or held down the wavelength will increment or scroll respectively 36 System Operation 4 3 7 4 3 8 4 3 9 4 3 10 The detector calibration module contains responsivity data at discrete wavelengths for its associated detector By entering the wavelength which is being measured the correct responsivity value is used by the 1830 R Series instrument in calculating the measured power When a wavelength falls between two calibration points linear interpolation is used to approximate the true responsivity value Upon the initial power up on a new calibration module the meter defaults to the shortest wavelength available for that specific detector Whenever the calibration wavelength is changed this new wavelength is written to the PROM in the calibration module and is used as the default wavelength at subsequent power ups ES Wavelength Decrement Same as Wavelength Increment except that this key decrements the wavele
58. nual has been provided for information only and product specifications are subject to change without notice Any change will be reflected in future printings Newport Corporation 1791 Deere Avenue Irvine CA 92606 USA Part No 90044527 rev A Preface V Confidentiality amp Proprietary Rights Reservation of Title The Newport programs and all materials furnished or produced in connection with them Related Materials contain trade secrets of Newport and are for use only in the manner expressly permitted Newport claims and reserves all rights and benefits afforded under law in the Programs provided by Newport Corporation Newport shall retain full ownership of Intellectual Property Rights in and to all development process align or assembly technologies developed and other derivative work that may be developed by Newport Customer shall not challenge or cause any third party to challenge the rights of Newport Preservation of Secrecy and Confidentiality and Restrictions to Access Customer shall protect the Newport Programs and Related Materials as trade secrets of Newport and shall devote its best efforts to ensure that all its personnel protect the Newport Programs as trade secrets of Newport Corporation Customer shall not at any time disclose Newport s trade secrets to any other person firm organization or employee that does not need consistent with Customer s right of use hereunder to obtain access to the Newport
59. ort has a DB 9 or DB 25 connector i TO 1830 R TO COMPUTER CABLE TERMINATORS RS 232 9 pin to 25 pin oP 25 PIN PIN NO DESCRIPTION __ PIN NO CARRIER DETECT RECEIVE DATA TRANSMIT DATA DATA TERM READY SIGNAL GROUND DATA SET READY REQUEST TO SEND CLEAR TO SEND RING IND OONOnfkwonw RaranSnwowoo UP SEN r TO 1830 R TO COMPUTER CABLE TERMINATORS RS 232 9 pin to 9 pin OPIN OPIN PIN NO DESCRIPTION PIN NO CARRIER DETECT RECEIVE DATA TRANSMIT DATA DATA TERM READY SIGNAL GROUND DATA SET READY REQUEST TO SEND CLEAR TO SEND RING IND 1 2 3 4 5 6 7 8 9 OONOnhkWNM Figure 18 RS 232 Cable Connectors 50 Computer Interfacing 6 5 1 6 5 2 Setting the Baud Rate Once cable connections are made the baud rate for communication must be set Valid baud rates are 9600 4800 2400 and 1200 The parity data bits and stop bits are fixed at no parity 8 data bits and 1 stop bit RS 232C Parameters Baud Rate 115200 57600 38400 19200 9600 4800 2400 1200 Parity none Data Bits 8 Stop Bits 1 Choose the appropriate baud rate by setting the rear panel system switches to the desired parameters as shown in Figure 19 GPIB Address RS232C Baud Rate 9600 Baud Rate 4800 Baud Rate 2400 Baud Rate 1200 Baud Rate 115200 Baud Rate 57600 Baud Rate 38400 Baud Rate 19200 Default RS 232C Baud Rate 9600 O 0 0
60. ory environment Use of this product in other environments such as residential may result in electromagnetic compatibility difficulties due to conducted as well as radiated disturbances The Model 1830 R Series Optical Power Meter is designed to operate in a controlled electromagnetic environment i e where R F transmitters such as mobile telephones may not be used in close proximity 1 3 Location of Labels and Warnings 1 3 1 Rear Panel Model 1830 R Fuse Label CAUTION DO NOT REMOVE COVER REFER SERVICING TO QUALIFIED YERSONNEL DISCONNECT POWER BEFORE REPLACING FUSE CE Label r z Model Serial Number and WEEE symbol Q NEWPORT DedonedinusA MODEL 1890 R S N 10011 pS SSO eee eas 100 120 220 240V Chassis Ground Max Power Figure 12 Rear Panel Labels and Warnings 20 Safety Precautions 1 3 2 Rear Panel Model 1830 R GPIB Fuse Label CAUTION DO NOT REMOVE COVER REFER SERVICING TO QUALIFIED PERS DISCONNECT POWER BEFORE REPLACING FUSE CS CE Label Model Serial Number and MENE j Onewrorre MODEL 1830 R GPIB8 S N 10011 vine CA USA WEEE 13AUG2005 Chassis Ground Max Power Figure 13 Model 1830 R GRIB 2 1 2 2 General Information System Overview The 1830 R Series Optical Power Meter is a 20 000 count A D resolution auto ranging picoammeter Measurements are displayed on a large 4 1 2 digit display and can also be taken remot
61. r This equipment is grounded through the grounding conductor of the power cord Route power cords and other cables so that they are not likely to be damaged Disconnect power before cleaning the equipment Do not use liquid or aerosol cleaners use only a damp lint free cloth Lockout all electrical power sources before servicing the equipment To avoid fire hazard use only the specified fuse s with the correct type number voltage and current ratings as referenced in the appropriate locations in the service instructions or on the equipment Only qualified service personnel should replace fuses To avoid explosion do not operate this equipment in an explosive atmosphere Qualified service personnel should perform safety checks after any service General Cautions Observe these cautions when operating this equipment If this equipment is used in a manner not specified in this manual the protection provided by this equipment may be impaired To prevent damage to equipment when replacing fuses locate and correct the problem that caused the fuse to blow before re applying power Do not block ventilation openings Safety Precautions 17 e Do not position this product in such a manner that would make it difficult to disconnect the power cord e Position the equipment so that access to the mains disconnect On Off switch is readily available Use only the specified replacement parts Follow precautions for static sens
62. r manual use the optical attenuator that was shipped with your detector When the attenuator mode is selected the following occurs a The ATTN annunciator is displayed b The responsivity for the detector with attenuator is used in calculating the optical power being measured 42 Performing Measurements 5 5 5 5 1 5 5 2 If the attenuator is subsequently removed the ATTN key should be pressed to turn the attenuator mode off All measurements will now be computed using the responsivity for the detector alone NOTE The transmission characteristics of each attenuator are different the user must therefore be careful to use ONLY the attenuator and detector pair with the same serial numbers for which the particular calibration module is calibrated Performing Basic Measurements 4 5 1 Power Measurements The 1830 R Series Optical Power Meter s most basic measurement mode is in the units of Watts Power measurements may be made with background correction which is initiated by pressing the ZERO key The following equation illustrates this relationship Watt reading Net Applied Power I L R where I detector input current I detector background current defined when the ZERO key was pressed R responsivity of the detector A W or detector with attenuator a Select the Watt measurement mode auto range and a wavelength Use manual ranging if you want manual control of the range over range is indica
63. red in this section please call Newport s Application Engineers for advice If necessary see Section 9 for details on returning your entire system to Newport for service Symptom Display shows E 001 Display shows E 002 Blank display Display shows 000 as the serial number at power up Display shows OL Display shows SA Reading is different than expected Reading never changes Possible Fault Correction Invalid detector Change the detector with a Newport Photodiode detector Invalid calibration data Change the detector with a Newport Photodiode detector or return the detector for recalibration Voltage selector switch not in the correct position or a fuse blown Turn the unit off Set the voltage selector in the right position Replace the fuses No calibration module connected at power up Power off the meter check that the module is properly inserted and then power up again Indicates that the signal is too large for the selected signal range Select a higher range use auto ranging or use an attenuator if one is available Indicates that the input signal level exceeds the specified saturation current of the detector being used with the meter This level is detector dependent See 0 Common Measurement Errors Calibration module not properly inserted at power up Meter not in the run mode press the R S key 78 Troubleshooting and Maintenance 8 2 8 3 Check the echo
64. ressed Upon power up the calibration wavelength used will be the last value entered into the meter if this is the initial power up on your calibration module the wavelength will default to the shortest available wavelength To change the wavelength do the following Determine the wavelength of the light being measured to the nearest nanometer If the source is broadband use either a value near the center wavelength of the light or the wavelength with greatest intensity Pressing the AV A4 keys will increase or decrease the calibration wavelength by Inm Wavelength will continue to change as long as the wavelength key is depressed NOTE Different detectors are sensitive over different wavelength ranges See the appropriate detector manual and calibration data to determine the range of wavelengths available for the detector being used The responsivities stored in the calibration module span only the wavelength range appropriate for the detector and are specific to that detector Setting the Attenuator Mode Most Newport photodiode detectors are provided with calibrated optical attenuators The responsivities for an attenuator detector combination are stored in the calibration module An 818 Series detector requires a manual setting while a 918D Series detector attenuator position is automatically recognized by the 1830 R Series Power Meters To measure optical powers above the saturation limit of the detector see appropriate photodetecto
65. rrent Amplifier Buffer Output Calibration To Module a Input Connector Microcomputer LCD Display Figure 22 Simplified Functional Block Diagram Newport Corporation Worldwide Headquarters 1791 Deere Avenue Irvine CA 92606 In U S 800 222 6440 Tel 949 863 3144 Fax 949 253 1680 Internet sales newport com Visit Newport Online at www newport com ISO 9001 FM 27207 Printed in the U S
66. rt Corporation you will be given a Return Number which you should reference in your shipping documents Please fill out a copy of the service form located on the following page and have the information ready when contacting Newport Corporation Return the completed service form with the instrument 80 Factory Service 9 3 Service Form GYD Newport Corporation U S A Office 800 222 6440 FAX 949 253 1479 Newport Name Return Authorization Please obtain RA prior to return of item Company Please obtain RA prior to return of item Address Date Country Phone Number P O Number FAX Number ltem s Being Returned Model Serial Description Reason for return of goods please list any specific problems 10 Appendix A Status Reporting System 10 1 IEEE 488 1 Serial Poll Response IEEE 488 1 Service Request lt SRQ gt Status Reporting System Below is a graphical representation of the 1830 R GPIB s Status Reporting System for the GPIB bus The two registers involved are the Status Byte Register and the Service Request Enable Register Busy Bit Message Available MAV Bit Service Request Bit Over Range Bit Read Done Bit Saturation Bit Command Error Bit Parameter Error Bit 7 e 5 4 3 2 of Q Status Byte Register ERREN 7 16 5 4 3 2 1 o M M Service Request Enable Register Figure 21 The 1830 R GPIB s Status
67. t cccsnccaravaceneaccdsscopamcaadnmaianins 40 5 3 Setting the WaVvelem ott iciccsisnccessseecenaneseessesvenesnesencrmancdeeaseivegerrend 41 5 4 Setting the Attenuator Mode sc ciacc sane cecscsshcexiabandasednaheceatiudexavancdes 41 5 5 Performing Basic Measurement ccccceesseesseceteceeeeeeeeeeseees 42 5 5 1 4 5 1 Power Measure nents ysisdccssescedscasiicccenncccesistecncerviens 42 5 5 2 4 5 2 Logarithmic Measurements dB and dBm 42 5 5 3 Relative Measurements xo cciraaccaceaniecnteeccenicenaeenimes 44 5 6 Common Measurement Errors sssesssssseseseeesssesssteesseesseesseeeseee 45 6 Computer Interfacing 47 Gel Introductio aiiai E 47 6 2 Computer Interface Terminology s ssessesessseessseseesseesesseesseeseeee 47 6 3 Entering Remote Computer Interface Mode eceeeeeeeeeeee 48 6 4 USB Communication 1830 R and 1830 R GPIB 0008 48 6 4 1 USB Command Termination scaicasscssssssecavsnsciseaes orsuneess 48 6 5 RS 232C Communication 1830 R GPIB only eeeeeeeee 49 6 5 1 Setting the Baud Rate vs icciessjeiasteniexntheesssiieiatsakiaxwiieces 50 6 5 2 RS 232C Command Termination cceeeeseeeeeeee 50 6 5 3 5 4 3 General Guidelines for Using the RS 232C Port 51 6 6 GPIB Communication 1830 R GPIB only ceeeeeteeeeeeeee 51 6 6 1 Setting the GPIB AGdress cis siescsesiciesstiececasiatnsanniaaante 51 6 6 2 GPIB Command Termination ce eeceeeeeeteeeeeeeees 53 6
68. t inadvertent key presses to affect his application setup LO command disables the local lockout feature The local lockout mode can also be disabled by powering up the meter again or by pressing the RESET button located at the back of the meter USB Communication 1830 R and 1830 R GPIB Before connecting the instrument to a host PC using a standard USB A to USB B cable the user should install the application included in the software CD that accompanies the Power Meter The application automatically installs the correct USB drivers Communication can be done through this interface by using the application or by developing software in the user s preferred programming language The software CD contains communication drivers and example programs in the following programming languages LabVIEW and C NET USB Command Termination Commands and queries sent to the 1830 R Series instrument through the USB port must be terminated by a lt LF gt line feed All responses sent by the 1830 R Series instrument are terminated with a lt LF gt line feed Computer Interfacing 49 6 5 RS 232C Communication 1830 R GPIB only Before communicating with 1830 R GPIB through the RS 232C port proper cable connections must be made Figure 18 shows the cable connections for communicating between the RS 232C port on the 1830 R GPIB and an RS 232C port on a computer The cable to be used depends on whether the computer s RS 232C p
69. ted by an OL message b Block the light to be measured c Initiate background correction by pressing the ZERO key Display should read approximately zero but will fluctuate depending upon the variations in the amount of light reaching the detector and the detector dark current fluctuations d Illuminate the detector with the optical signal to be measured e Take the reading from the display 4 5 2 Logarithmic Measurements dB and dBm The 1830 R Series instrument can make logarithmic measurements referenced to any measured power level or to a 1 mW power level by changing the measurement units to dB or dBm respectively Performing Measurements 43 NOTE Log measurements should always be made on the lowest possible range without over ranging Readings on high ranges will not allow optimum calculations of the logarithm When in doubt use auto range NOTE When using log measurements with background correction the signal after the subtraction of the stored offset power level may be negative In this case OL will be displayed since the log of a negative number is not defined This will be automatically cleared when the signal becomes positive 5 5 2 1 Logarithmic Measurements Using Reference Powers dB The dB measurement mode displays the absolute value of 10 times the logarithm base 10 of the input power referenced to a power level which is selected by pressing the STOREF key The following equation illustrates this r
70. th the calibration data for the detector The Model 1830 R Series meter reads this calibration data from the detector upon power up and when the connector is attached to the instrument O es Q O 0 5 e O 3 3 Figure I5 Calibration Module Connector Port Configuring the Computer Interface 1830 R GPIB only The RS 232C baud rate and the IEEE 488 GPIB address must be properly set via the back panel system switches if either interface is to be used Model 1830 R does not have these interfaces Please refer to Section 6 for detailed instructions Note that the USB interface is self configuring the back panel system switches are ignored when the USB interface is used Power Up Auto Calibration Turn on the 1830 R Optical Power Meter by depressing the black power switch button located in the lower left hand corner of the front panel until it clicks and remains in its depressed position At power up the 1830 R Series instrument will perform the following sequence 1 Momentarily display all the segments on the display 2 Display the software version number Initial Setup 29 3 Perform an Auto Calibration designated by displaying CAL on the display 4 Display the serial number of the detector calibration module 5 Display the wavelength to which the meter is set The auto calibration process involves measuring amplifier offset voltages which arise from aging and temperature effects These offsets are then appropriately
71. tinue to operate with this problem Or is the system non operational e Can you identify anything that was different before this problem occurred Preface vil Table of Contents EU Declaration of Conformity ccceccccccecsseceteceseeeeceeeeeceseeeseenteenees iii Warranty casas ecg des ean r A a ETna aaa Dana Ea EES iv Technical Support Contacts aia seii isaceatiecse diese nies Sechelt es cidoance atscueees vi Table OE Contentsessinaniien cd neta sian E R O vii Eist of FSU CS oon ink foes ceasavedsc ted a R E E EE xi istof Tables nesies etaoin n E E E E E RE E xi 1 Safety Precautions 13 1 1 Definitions and Symbols 25s tesecten ar drat aii eases aees 13 1 1 1 General Warning or Caution ceceecceeseeereeeteeeeeeees 13 11 2 Electric SROCK Si ceceika cs cithe east eus el acuaa lat ces 13 1 1 3 European Union CE Mark 0 cc ccsccsssscseccssccesncesensenes 13 1 1 4 Alternating voltage symbol iii ccsscicccseesedenncienias 14 DTS Orig ee asia carota nn Ba eae aes 14 KEG 0 b Deter ee ere ny EE eRe ne EA ener 14 Vide E a E EE EEEE A E eats eee ee 14 KES USB Airean n e ae etna R RES 14 1 1 9 Frame or Chassis s ssesneeseosseesesessseessesesssessessressessssees 15 1 1 10 Waste Electrical and Electronic Equipment WEEE 15 1 1 11 Control of Hazardous Substances c cee eceeseeeteeees 15 1 2 Warnings and C atitiOns seu esha cdenciettaseldatSans a aaaea tues 15 1 2 1 General Warnings ses ccwesdssse
72. ubtraction This key turns the offset subtraction on and off When turned on the ZERO annunciator is displayed and the last measurement is saved as P and subtracted from all subsequent measurements P This causes subsequent measurement calculations shown on the display and available on the remote interface to use the value P P instead of P Offset subtraction allows one to remove the effects of ambient DC signals by zeroing the display before making a measurement A second ZERO key press turns off the ZERO annunciator and stops offset subtraction UNITS Display Units Measurements can be displayed in units of watts W decibels dB or dBm and relative REL Pressing the UNITS key repeatedly cycles the display through these four units The W mode is a straightforward measurement which converts the current from the detector into a power reading via the responsivity of the detector at the set wavelength The dB mode uses the relationship dB 10 log P P where P is the most recent measurement and Pis the reference measurement At power up the reference for the dB mode is a level equivalent to ImW This can be changed by pressing STOREF which makes the most recent measurement the new P The dBm mode uses the relationship dBm 10 log P 1mW where P is the most recent measurement System Operation 35 4 3 4 4 3 5 4 3 6 The REL mode uses the relationship P P where P is the most recent measurement
73. urements This page is intentionally left blank 6 6 1 6 2 Computer Interfacing Introduction The Model 1830 R GPIB has three computer interface ports USB Device GPIB and RS 232C The Model 1830 R has one computer interface port USB Device The GPIB interface conforms to the IEEE 488 1 hardware standard All commands for the 1830 R Series instrument are device dependent commands In this manual we interchangeably use either GPIB or IEEE 488 when referring to the IEEE 488 bus Please see the General Guidelines sections for using either the USB Section 6 4 RS 232C Section 6 5 or GPIB Section 6 6 interfaces These sections include important information on using these interfaces properly Computer Interface Terminology Key abbreviations and concepts used in the command reference section of this manual are listed below lt EOI gt End or Identify An IEEF488 1 signal sent with the end of string character lt CR gt Carriage Return The ASCII decimal 13 byte lt LF gt Line Feed An ASCII decimal 10 byte lt NL gt New Line Defined in the IEEE 488 standard as the ASCII decimal 10 byte lt SRQ gt Service Request The 1830 R GPIB generates an lt SRQ gt to tell the GPIB controller that a serial poll is needed Any device on the GPIB bus may assert the lt SRQ gt line Bit 6 decimal 64 will be high in the serial poll byte returned from a device requesting service To determine if a device
74. y SNZZZZ RST Power Meter Reset Function This command performs a soft reset of the instrument Syntax RST Parameter None Returns None Related IDN Query the power meter s identification string Commands ADDRess GPIB Address Query Function This query returns the power meter s GPIB address ON 1830 R GPIB Optical Power Meter the GPIB address can be changed by selecting different DIP switch settings located on the instrument s rear panel 76 Remote Command Set Syntax Parameter Returns ERRSTR Error String Query Function Syntax Parameter Returns ADDRess None 1 31 Power meter s GPIB address This query returns a single error code along with the corresponding error text string that occurred since the last error query Error Code Error String 0 No Error 1 Invalid Detector 2 Invalid Calibration Data 116 Syntax Error 126 Wrong of Params 201 Value Out of Range ERRSTR None Error code text Error code and text for error code as per Appendix A 0 if no errors 8 8 1 Troubleshooting and Maintenance Troubleshooting Guide The following troubleshooting guide is intended to isolate and solve problems with the power meter so that to the greatest extent possible the return of the power meter detector system to Newport will be unnecessary For the problems that cannot be resolved with information in this manual or for other situations that are not cove
75. y presses to affect the system operation Syntax Ln or LOCAL n Remote Command Set 65 Parameter Type Related Commands n 0 Local lockout is off n 1 Local lockout is on Integer L or LOCAL Query the present status of local lockout function L or LOCAL Local lockout query Function This query informs the user whether 1830 R Series Optical Power Meter s local lockout function is enabled disabled The local lockout function when enabled locks out any front panel key presses from affecting the system operation The 1830 R Series instrument s front panel display has a LLO annunciator and it lights up when the local lockout function is enabled Syntax L or LOCAL Parameter None Returns 0 Local lockout function is disabled 1 Local lockout function is enabled Related Ln or LOCAL n Enable disable the 1830 R Series Commands Optical Power Meter s local lockout function Mn or SREn Service Request Enable Register Mask Function The Service Request Enable Register is used to define the conditions that will generate an IEEE 488 1 service request lt SRQ gt This register performs a bit wise AND ing operation with the Status Byte Register When an event occurs that causes a bit to be set in the Status Byte Register and its corresponding bit is set in the Service Request Enable Register an lt SRQ gt will be generated once for the given event When the lt SRQ gt is asserted

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