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Hand-held Optical Power/Energy Meter

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1. 300n 300 nanowatts or nanojoules lu 1 microwatt or microjoule 3u 3 microwatts or microjoules 10u 10 microwatts or microjoules 30u 30 microwatts or microjoules 100u 100 microwatts or microjoules 300u 300 microwatts or microjoules lm 1 milliwatt or millijoule 3m 3 milliwatts or millijoules 10m 10 milliwatts or millijoules 30m 30 milliwatts or millijoules 100m 100 milliwatts or millijoules 300m 300 milliwatts or millijoules 1 1 Watt or Joule 3 3 watts or joules 10 10 watts or joules 30 30 watts or joules 100 100 watts or joules 300 300 watts or joules 1k 1 kilowatt or kilojoule 3k 3 kilowatts or kilojoules 10k 10 kilowatts or kilojoules 30k 30 kilowatts or kilojoules 100k 100 kilowatts or kilojoules 300k 300 kilowatts or kilojoules lmeg 1 megawatt or megajoule 3meg 3 megawatts or megajoules 10meg 10 megawatts or megajoules 30meg 30 megawatts or megajoules 100meg 100 megawatts or megajoules 300meg 300 megawatts or megajoules 4 2 1 3 Set dBm Display This command changes the on screen display unit to dBm This option is only available with the 918D Series and 818Series Low Power Detectors Text Command Parameters Return DBU 1 to turn On 0 to turn Off ACK 54 Default Off 4 2 1 4 Set High Resolution Display This command is used to add significant digits to the on screen reading Tex
2. Set Scale Binary Command Parameters Return 1130 Scale identifier or index ACK Send the index of the identifier Scale Identifiers Binary Scale Identifier 0 optimum 1 1 picowatt or picojoule 2 3 picowatts or picojoules 3 10 picowatts or picojoules 4 30 picowatts or picojoules 5 100 picowatts or picojoules 6 300 picowatts or picojoules 7 1 nanowatt or nanojoule 8 3 nanowatts or nanojoules 9 10 nanowatts or nanojoules 10 30 nanowatts or nanojoules 11 100 nanowatts or nanojoules 12 300 nanowatts or nanojoules 13 1 microwatt or microjoule 14 3 microwatts or microjoules 15 10 microwatts or microjoules 16 30 microwatts or microjoules 17 100 microwatts or microjoules 18 300 microwatts or microjoules 19 1 milliwatt or millijoule 20 3 milliwatts or millijoules 21 10 milliwatts or millijoules 22 30 milliwatts or millijoules 23 100 milliwatts or millijoules 24 300 milliwatts or millijoules 25 1 Watt or Joule 26 3 watts or joules 27 10 watts or joules 28 30 watts or joules 29 100 watts or joules 30 300 watts or joules 76 31 1 kilowatt or kilojoule 32 3 kilowatts or kilojoules 33 10 kilowatts or kilojoules 34 30 kilowatts or kilojoules 35 100 kilowatts or kilojoules 36 300 kilowatts or kilojoules 37 1 megawatt or megajoule
3. In the Average display mode the energy or power measurement is the average value defined in the data sampling menu You can change your data sampling to your desired average time or number of points for Energy measurement To activate the average display go into the Ctrl Menu select Stat mode then select Start 2 3 1 10 Zoom In the Zoom display mode you can adjust the display scale of the line plot display or the histogram display When zoom is selected move the first vertical line using the up down key then select Enter Move the second vertical lines then select Enter If you want to exit the zoom option press the Enter key two times To disable the zoom reselect zoom in the display menu 2 3 1 11 Digital Tuning Needle Display When you select the Tuning Needle a graphical interface shows a real time digital needle The deflection of the digital needle is proportional to the real time measurement The 15 Hz refresh rate makes it an excellent tool for laser tuning and alignment 120 0 180 0 60 0 240 0 0 0 300 Fig 2 9 Digital Needle Display 2 3 2 Scale Menu The scale can be set to the automatic scaling mode Auto mode or to a specific fixed scale which depends upon the specific detector head using the arrow keys on the keypad Once the Newport detector has been automatically identified from the detector head s EEPROM done at boot up of the 842 PE the scale menu available for that particular detector is the only
4. 52 4 2 Serial commands 4 2 1 Display Commands 4 2 1 1 Set Display This command is used to change the device s on screen display mode Text Command Parameters Return SDU Display Mode ACK Available display modes Parameter 0 Real Time Display Default display mode It shows the current measured value 1 Histogram Shows a short history of the acquired data 2 Statistic Shows all data relevant to statistics 3 Digital Needle Provides a simulated analog needle 4 Lineplot Displays the data history as a line plot 4 2 1 2 Set Scale This command is used to force the display of the current data into a specific range The lower range is always zero and the higher ranges can be found in the table below The Auto scale applies the best scale for the current values in real time The parameter must be one of the identifiers in the table below Remember that the serial protocol is not case sensitive in text mode Text Command Parameters Return SSA Scale identifier or index ACK Scale Identifiers Text Mode Scale Auto optimum lp 1 picowatt or picojoule 3p 3 picowatts or picojoules 10p 10 picowatts or picojoules 30p 30 picowatts or picojoules 100p 100 picowatts or picojoules 300p 300 picowatts or picojoules In 1 nanowatt or nanojoule 3n 3 nanowatts or nanojoules 10n 10 nanowatts or nanojoules 30n 30 nanowatts or nanojoules 100n 100 nanowatts or nanojoules
5. information will appear here 3 Computer Interfacing 3 1 Installation The 842 PE comes with a USB cable enabling communication via the USB interface The instructions below assume you are running Windows 2000 or XP as the operating system The easiest way to get up and running is to install the USB drivers first before even connecting the USB cable A special RS 232 cable is available separately part number 842 CAB USE WITH PC ONLY The software for the 842 PE is not compatible with a Macintosh computer Insert the Newport 842 Series Software CD into your computer s CD ROM drive Navigate to and open the USB Driver Installer Follow the on screen instructions to complete the installation If you connect the USB cable to your PC before installing the USB drivers then a window will open that says Found New Hardware USB Device and after several seconds to a minute the Found New Hardware Wizard will appear Cancel the wizard and execute the Auto installer USB driver installer exe in the USB Driver folder from the CD ROM At the end of this process a new serial COM port will be added to the list of communication ports It may be used like any other serial port You will need to know the COM port number to set up the serial connection to the 842 PE see section 3 2 1 below NOTE 47 Although the 842 PE is equipped with both a mini serial port and a USB port they cannot be used at the same time Only one por
6. 4 2 Set Energy Mode This command is used to toggle the Energy mode when using a high power detector Text Command Parameters Return SCA 1 to turn On 0 to turn Off ACK Default Off 4 2 4 3 Set Anticipation This command is used to enable or disable the anticipation processing when the device is reading from a wattmeter The anticipation is a software reading acceleration algorithm that provides faster readings using the detector s calibration Text Command Parameters Return EAA 1 to turn On 0 to turn Off ACK Default On 4 2 4 4 Set Zero Offset This command subtracts the current value from all future measurements the moment the command is issued to set a new zero point Text Command Parameters Return EOA 0 to turn Off 1 to turn On 2 to ACK undo Default Off 4 2 5 Instrument and Detector Information Commands 61 4 2 5 1 Query Version This command is used to query the device to get information about the firmware version and the device type Text Command Return VER Version number and device type Example Response from 842 PE Text Command VER lt enter gt 842 PE Version 1 01 lt CR gt lt LF gt 4 2 5 2 Query Detector Head Name This command is used to query the model of the current detector head Text Command Return HEA Model of the current head Example Response from 842 PE Text Command HEA lt e
7. Command Parameters Return 1112 Trigger Level percentage ACK 81 In binary mode the value must be multiplied by 1000 and sent as an integer Example Response from 842 PE Binary Handle 1112 ACK Command Parameter 15400 Enable Statistics Binary Command Parameters Return 1155 0 1 or 2 to Disable Enable or Reset ACK Set Energy Mode Binary Command Parameters Return 1160 1 to turn On 0 to turn Off ACK Set Anticipation Binary Command Parameters Return 1123 1 to turn On 0 to turn Off ACK Set Zero Offset Binary Command Parameters Return 1120 0 to turn Off 1 to turn On 2 to undo ACK Query Version Binary Command Return 1001 Version number and device type The following example is for a hypothetical 842 PE version 1 2 There are four parameters in binary mode In this case they would be Binary parameters Example Header Acknowledge 10 2 byte word Length of transmission 16 2 byte word excluding header Reply parameters Version number 1 4 byte word Version Extension 2 4 byte word Length of Device name string 4 4 byte word Device name string 842 PE Text string in ASCII code 82 For this one example we show the binary response as the computer would see it Example Response from 842 PE Binary Handle 1001 9100160001000 2 Command 000 4 83 79 76 79 Tra
8. PE will be displayed If you prefer to see the commands you are typing in the HyperTerminal window click the File menu and execute the following sequence File Properties Settings tab ASCII setup select Echo typed characters locally OK To test the connection type VER in the HyperTerminal window and press ENTER If the response is the version of your 842 PE you are successfully connected and ready to send serial commands 3 2 3 HyperTerminal Settings Shortcut When you end the session HyperTerminal asks if you want to save your settings To avoid inputting the communication parameters again in the future save by clicking Yes The next time you execute the string of commands shown in section 3 2 2 above the name of your session will appear after HyperTerminal Clicking on the session name will open the connection using the saved settings To avoid re entering the string of commands put a shortcut to this file on your desktop using this procedure Search for the file name Select the file Right click and select Shortcut in the drop down menu 3 3 Software User friendly communication software customized for the 842 PE is included on the CD that came with this instrument It will be found in the folder labeled PC Interface for 842 PE V200 Open this folder and double click on setup exe and follow the instructions given by the Installation Wizard Please visit our website for the most recent versio
9. PTP stability Pulse Repetition Rate Avg Power Data Storage 50 000 points The SuV bias can introduce an error into low power measurements when using the 818 series Low Power Detectors It is essential to use the Zero Offset to rezero the 842 PE before making a measurement in these conditions It is always good practice to use the Zero Offset See section 2 2 gt Varies with individual detector see 818P Series Detector Manual Including linearity gt Up to 225 000 if not using any advanced features that require memory 15 Fig 1 1 842 PE Front Panel 1 5 Front Panel Description 1 5 1 I O and Backlight Control Key 1 5 2 lt 7 The I O key has two functions 842 PE on and off Pressing the I O key quickly when the 842 PE is OFF turns the 842 PE ON do not hold the I O key To turn off the 842 PE press and hold the I O key a few seconds To prevent battery leakage and to increase battery life we recommend turning off the 842 PE when not in use Backlight control With the 842 PE ON pressing the I O key very quickly switches the LCD screen Backlight ON or OFF If you are working without the external power supply turn the backlight off for longer battery life gt Y Arrow Keys The Arrow keys allow the user to browse through the menus Press the Right Arrow key until you reach your desired option To go backwards press the Left Arrow key When you are not in the Menu the Ar
10. analysis of the measured data See Section 2 3 3 3 for a detailed description of each parameter Select the Start button to start or restart the data sampling and statistical calculations Use the Stop button to stop the data sampling and statistics before you reach the end of the selected sampling time The last statistical values calculated remain on screen so you can view them later even if you close and reopen the Statistics window To set the data to zero select Reset To restart the data sampling select Start The Close button closes the statistics window so you can see the Main display again but does not interfere with the statistics being computed The data sampling and statistical calculations continue with this window closed or open and are independent of the display you select You can open and close the statistics display window to check on the statistics as often as you like The values in this display provide an additional digit of resolution to allow you to benefit from the improved precision of large samples You must understand your sample size well enough to know if this additional digit is significant Statistics Current Value Maximum Value Minimum Value Average Value Std deviation RMS Stability PTP Stability Time 0 9512 W 0 9519 W 0 9505 W 0 95118 W 0 9135 mW Cancel 0 096 period 0 147 4 10 Sec Fig 2 6 Statistics Display 2 3 1 5 Peak Power Display In the Peak Power display mode the
11. clears and recalculates the statistics at the end of each sample period unless you manually stop it Total Duration units Continuous Periods Weeks Days Hours Minutes Seconds Sets the time period for the value entered above To make the statistics stop after one sample period select 1 and Period Maximum of 100 periods can be as high as 100 weeks Minimum is 1 second Period Time Stamp Yes No To have a time stamp appear with the data and go directly to the exit mode select yes by pressing the down arrow key until Yes appears on the screen then press the right arrow key Selecting Yes writes a time stamp with each data point This is a relative time stamp that always begins with zero Using the time stamp facilitates data analysis but consumes more memory thus limiting the total number of data points that can be taken To set the Time Stamp press the down arrow key until Yes appears on the screen then press the Enter key The set 842 PE time dialog box appears Set Date To set the date use the right and left arrow keys to select the date in the format M D Y The UP arrow adds units while the DOWN arrow subtracts units To return to the Time dialog box press the Menu key Set Time To set the time use the right and left arrow keys to select the time hours or minutes using the 24 hour clock The UP arrow adds units while the DOWN arrow subtract
12. frequency accuracy with the Metallic joulemeter types 818E xx xx F you must at least make a 2 second statistical analysis The statistical parameters that are calculated are listed in Table 2 1 Table 2 1 Statistical Parameters Statistical Parameters Power Energy Definition Current value y y Value of the most recent measurement Maximum value y y Highest value in the sample period Emax Or Pmax Minimum value y y Lowest value in the sample period Emin Or Pimin Average value y y Rolling average of values in the sample Eavg or Pave Standard Deviation y y A measure of the spread of the data around the average 33 RMS stability Root mean square stability represents the standard deviation as a percent of the average RMS ST7D 400 RMS STD 100 E P vg avg a PTP Stability Shows the spread between the highest and lowest point in the sample as a percent PTP Posa x100 PTP mx Emi 2100 avg avg Time Time elapsed since beginning the sample Pulse Number of the last pulse added to the sample Repetition Rate Frequency of pulses coming from the laser PRR Average Power Power calculated from the pulse energies and repetition rate Pog Eavx PRR To Activate the Statistics select Statistics from the Ctrl menu and then select Start in the submenu The 842 PE starts compiling statistics on your measurements as soon as the Statist
13. noisy environments Acceptable values range from 0 1 to 99 9 Caution should be taken when choosing a lower trigger level than the 2 default value in a high noise environment To change the trigger level value access the dialog box by selecting Trig Level from the Settings menu and enter the desired number in percent or in decimal form The 842 PE will not detect pulses with a value under the Trig Level Be careful to select a scale that is close to the measured value if the Trig Level is high The value of the trigger level is shown on the side of the Trig level menu confirming that it is activated to a specific user level Selecting a high value for the trigger level may cause problems with the detection of widely varying energy values when in the autoscale mode The autoscale function uses the energy level of the last pulse to set the scale level Therefore it will not detect the next pulses if they are lower than the trigger level As a result the autoscale may become caught on a high scale value To solve this problem select a lower value for the trig level change the scale manually or reset the autoscale by reselecting autoscale in the Scale menu With the metallic joulemeters 818E xx xx F types the trig level is set to 3 and cannot be change If you inadvertently trigger on noise change to a higher scale ERRATIC TRIGGERING For a few detector heads in electrically noisy environments it is possible that the 842 P
14. parts included with the 842 PE Handheld Power Meter Please make sure everything is present before discarding packing materials 842 PE hand held meter 842 BAT battery pack installed in 842 PE Power supply battery charger USB cable Software CD User Manual CD Start Up Guide 1 4 General Specifications The following specifications are based on a one year calibration cycle an operating temperature of 18 C to 28 C 64 F to 82 F and a relative humidity not exceeding 80 General Specifications 842 PE Digital Display 76 78 x 57 58 mm LCD 240 x 160 Pixels Display Rate 3 Hz numeric display 15 Hz bar graph amp needle display Bar Graph 165 divisions Data Displays Real time Line plot Histogram Statistics Digital tuning needle User input correction factors 2 multipliers and 2 offsets 7 digits floating point Analog Output 0 1 volt full scale 1 Computer Interfaces USB and RS 232 USB cable included RS 232 cable sold separately part number 842 CAB 13 High throughput serial frequency Up to 200Hz with a 310 ms delay between burst for Metalic or XLE joulemeters whereas 45 to 78 ms for MB joulemeter and power heads Dimensions without stand 230mm W x 122mm H x 44 mm D Weight with stand 0 52 kg Battery Pack 4 rechargeable 1 2 V Ni MH AA Battery Life 11 hours 6 hours with backlight Battery Charge Time 6 hours Universa
15. the Pass Fail test this is the lower bound 38 Lower Bound Unit For Binary mode only 39 Reference Value For the Pass Fail test this is the Reference Value 40 Reference Unit For Binary mode only 41 Pass Fail Status Is the Pass Fail test active On Off 63 42 Threshold Has the Pass Fail test failed Fail Pass 43 Autoscale query Indicates whether the meter is in Autoscale 44 DBM query Indicates whether the meter is in dBm mode 4 2 5 4 Query Battery Power This command is used to query the device s remaining battery power Text Command Return BAT Low Medium or High Example Response from 842 PE Text Command BAT lt enter gt The battery power is High 4 2 5 5 Set Internal Clock This command is used to adjust the time and date of the monitor s internal clock This information is used to timestamp files when data logging Text Command Parameters Return CLK day month year hour ACK minute second AM PM Day 1 to 31 Month 1 to 12 Year 1970 to 2999 Hour 0 to 23 PM is assumed if over 12 Minute 0 to 59 Second 0 to 59 AM PM 0 Am 1 PM 4 2 6 Instrument Control Commands 4 2 6 1 Set Backlight This command is used to turn the backlight of the device display on or off Text Command Parameters Return 64 BKL 1 to turn On 0 to turn Off ACK Default Off 4 2 6 2 Set A
16. the device is correctly connected to the computer simply press the Update Device button to start the upload This should take a few minutes after which you will need to turn off and restart the 842 PE The upgrade instructions file contains more detailed step by step instructions for the procedure 6 3 Battery Charging As mentioned previously the 842 PE meter is operated using four standard rechargeable Ni MH batteries When the low battery indicator shows on the lower right corner of the screen recharge the batteries by connecting the 67 external power supply for six hours The 842 PE can be either on or off during this procedure One battery charge provides up to 7 hours of operation The 842 PE may not function properly when the battery level is very low In that case connect the power supply to the 842 PE to recharge the battery You can operate the 842 PE by plugging it into a USB port when the battery is low or even removed but it will not recharge Recharging requires the external power supply 68 7 Service Information The Model 842 PE Hand Held Power Energy Meter contains no user serviceable parts To obtain information regarding factory service contact Newport Corporation or your Newport representative Please have the following information available 1 Instrument model number 842 PE 2 Instrument serial number on rear panel 3 Description of the problem If the instrument is to be returned to New
17. time For 0 Energy Susto example for 1 second between samples set to 60 alte points per minute 0 to 300 Sample rate units pts Secon Sets the time period for the number of points pts Second d entered above pts Minute Maximum is 100 points second pts Hour Minimum is 1 point day pts Day Time between samples 1 sample rate of Pulses Integers Sets the fraction of the incoming pulses sampled 100 Sampled 0 to 100 for the statistics calculations and data recording Energy Energy only Sample Period Integers The time over which samples are to be averaged 10 Power 0 to 100 Sets the number of samples used in the average 500 Se and standard deviation For example for each Energy value average to be based on 5 minutes of data set to 5 0 to 300 minutes This is also the time period displayed ti by the Histogram and Line plot ime units or 0 to 100 000 points Sample period Second Sets the time period for the value entered above Minute nt Minute Maximum is 300 weeks or 100 000 points ia Hour Minimum is 1 second or 1 point Energy Day Week Points Total Duration Integers The time period for which samples are reported 1 0 to 100 to the display and output Select a time period custom or a number of points For example report value statistics for 24 hours Often the total duration 36 0 to 300 time units or 0 to 100 000 points and sample period will be the same The 842 PE automatically
18. 1 Harmonic current emissions Class A BS EN 61000 3 3 2002 Voltage fluctuations and flicker BS EN 61010 1 2001 2 Edition Safety requirements for electrical equipment for measurement control and laboratory use Bruno Rety Group Director of PPT Instrument and Motion Europe Zone Industrielle 45340 Beaune la Rolande France ANA Dan Dunahay Director of Quality Systems 1791 Deere Avenue Irvine Ca USA Technical Support Contacts North America amp Asia 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 Telephone 800 222 6440 x31694 Telephone 33 02 38 40 51 56 Asia Newport Opto Electronics Technologies 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 produ
19. 38 3 megawatts or megajoules 39 10 megawatts or megajoules 40 30 megawatts or megajoules 41 100 megawatts or megajoules 42 300 megawatts or megajoules Set dBm Display Binary Command Parameters Return 1159 1 to turn On 0 to turn Off ACK Set High Resolution Display Binary Command Parameters Return 1161 1 to turn On 0 to turn Off ACK Query Current Value Binary Command Return 1200 Current value In binary mode 5 parameters are returned the Current Value the Current Value s unit divider the Uncorrected Value raw value before the multipliers and offsets the Uncorrected Value s unit divider the current scale 77 Query New Value Ready Binary Command Return 1201 1 0 Available Not Available lt CR gt lt LF gt Query Statistic Data Binary Command Return 1202 Statistics In binary mode the following structure is sent Current Value Current Value Unit Maximum Maximum Unit Minimum Minimum Unit Average Average Unit Standard Deviation Standard Dev Unit RMS Stability PTP Stability Current Time In Period Total Time of Period Pulse Number Total Pulses Average Power Avrg Power Unit Repetition Rate Rep Rate Unit Uncorrected Value Uncorrected Value Unit This value should be divided by the Current Value Unit This is a divider This value should be divided b
20. A Wavelength ACK Default Calibration wavelength typically 1064 nm 57 4 2 3 2 Set Attenuator This command is used to adjust the processing of the meter with the readings of the detector depending on whether the detector is using an external attenuator or not Text Command Parameters Return ATU 1 to turn On 0 to turn Off ACK Default Off 4 2 3 3 Set Multipliers This command is used to set the value of the multipliers Text Command Parameters Return SMU Multiplier 1 or 2 lt Multiplier ACK value gt Default 1 There are two multipliers and two offsets that are automatically applied in the following order Multiplier 1 gt Offset 1 gt Multiplier 2 gt Offset 2 It is possible to modify the values of the multipliers by selecting indexing them in the first parameter 1 or 2 and entering a new value in the second parameter The following example sets multiplier 2 equal to 3 3 Example Response from 842 PE SMU 2 3 3 lt enter gt ACK lt CR gt lt LF gt 4 2 3 4 Set Offsets This command is used to set the value of the offsets Text Command Parameters Return SOU Offset 1 or 2 lt Offset value gt ACK Default 0 There are two multipliers and two offsets that are automatically used in the following order Multiplier 1 gt Offset 1 gt Multiplier 2 gt gt Offset 2 It is possible to modify the values of the o
21. E will inadvertently trigger on the noise In that case increase the trigger level to 3 or higher if necessary It is always good practice to reduce electrical noise generation or shield the detector and meter when measuring very low pulse energies 2 3 3 6 Reference Values Comparisons of your power measurements to certain user defined reference values are easy to make If your current measurements lie within your established Upper and Lower bounds then they meet the standards If they go above or below the bounds then there could be a quality problem which triggers a fail message The Reference Values option has two modes Threshold mode and Pass Fail mode Display Scale IS Graphical Mode Full Display Mode Analog Out Reset Threshold Off Pass Fail Fig 2 14 Pass Fail menu Threshold mode Use this mode to set or change the upper and lower bounds reference values and to restore the last values To set or change a setting use the arrow keys and scroll to Set Upper Bound Set Lower Bound Close Set Reference Values or Restore Last Values Highlight your choice and press the J Enter key You may select Upper Bound only Lower Bound only or both 39 Pass Fail Graphical mode View the line plot on the screen with the limits that you selected If the current power increases to a point above the upper or lower bound FAIL appears on the screen To reset a failed experiment press the Menu button to see the men
22. Model 842 PE Hand held Optical Power Energy Meter Users Manual GO Newport Experience Solutions 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 during 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 is longer 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 O
23. R 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 2007 2004 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 manual 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 P N 90001049 D N 45501 REV B Declaration of Conformity We declare that the accompanying product identified with the C mark complies with requirements of the Electromagnetic Compatibility Directive 200489 108336 EEC and the Low Voltage Directive 73 23 EEC Model Number 842 PE Power Meter Year mark affixed 2007 Type of Equipment Electrical equipment for measurement control and laboratory use Manufacturer Newport Corporation 1791 Deere Avenue Irvine California 92606 Standards Applied Compliance was demonstrated to the following standards to the extent applicable BS EN61326 1 1997 A1 A2 A3 Electrical equipment for measurement control and laboratory use EMC requirements This equipment meets the CISPR 11 2006 A2 Class A Group radiated and conducted emission limits BS EN 61000 3 2 200
24. Start Up Guide 1 Calibration certificate 1 Software CD ROM Separation Paper Quick start guide and certificate Plastic Instrument enclosure LCD enclosure Wires USB cable and power supply plug NimH batteries inside the monitor Liquid crystal display Less than 100 cm Printed circuit board inside the monitor 86 Dismantling procedure Remove the DB15 post using pliers Remove the 4 screw on the bottom of the monitor using a Philips screwdriver Disconnect the Battery and LCD Remove the 4 screws that hold the LCD using a Philips screwdriver Internal 101246 87 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 BS Q Newport Corporation Irvine California has been certified compliant with ISO 9001 by the British Standards Institution ISO 9001 FM 27207 Printed in the U S
25. Value Ready aiii iii 71 Query Statistic Dafar cie ne raS 77 Set Logging Stary Slop civic di esveedies 78 File Download eiii 78 Set Wavelength Correci n 78 A nsns iar aasi aars ainsa sainan 78 SEMA e Os de O 79 O O EIN 79 Query Data Sampling Settings cccccssccssccssrcssstcsseeseees 79 Configure Data Sampling sida 80 Set Trigger Levels nenna aa ai an 80 E able SEAS IG Scere cat shade atest eae 81 Set Energy Mode sia 81 Set Anticipation a 81 Set Zero OTIS CLs se lia 81 Q ery WSIS ONT caveats Cet cals Soden Ot ela se Caren dace aaa 81 Query Detector Head Name e 82 Q ery A A EEi AS 82 Query Battery PON a 84 Set Iter Clock ca 84 Set Backlight iresi netas aoira a i EA A RERE 84 A 84 T stC mmunicatoni iO 84 A A ll orci art ete archers 84 AppendixA IIA AS Recycling and separation procedure cocooconocccoccccnoncnonoconoconn nono nonnnccnacinos 85 SEPAN A O NE 85 10 List of Illustrations Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Vel 842 PE Front Panel iss 4 a te 15 bed B42 PE Top Parla a 16 21 The Menu Bar Ed 20 222 The Dialog BOX n tir narine ta Aide Oe aes AAA aAa 21 2 3 View of the first group of 842 PE menus ooocoocccocccoccnoncnnnconccononnnonos 24 2 4 Real Time Display to delas 25 2 5 Display Options ME a 25 2 6 St tisties Displays ninie Gada den cues os a a iaa aia aaas 26 227 SEUS USA INS A 27 228 View PES CES 27 2 9 Di
26. asurement Commands Control ee 59 ADAM Enable StatistiCs tds 60 A DAD Set Energy Mode sorento lit 60 4 2 4 3 Set Anticipation ii 60 ADA Set Zero Oiset caves A G aE 60 4 2 5 Instrument and Detector Information Commands 60 4 2 5 1 A A 61 42 5 2 Query Detector Head Name cin a 61 A A scat aara A ina asin 61 4 2 5 4 Query Battery Power iia 63 IO 101 IN 4 2 5 5 Set Internal Clock ooooonnnnnnonononononaonnnnnonononcnnononons 63 4 2 6 Instrument Control Commands eceeeeseeereeeteees 63 42 6 Set Backiont ad 63 426 2 Set Analog Output msn 64 4 2 7 Communications Commands ccccceesceeseeeeeeeeeeeeees 64 4 2 7 1 Test Communication a Sie eae otaatse 64 4 2452 Unit Serial Pots 64 Error Messages 65 Maintenance 66 6 1 USB installation for the 842 PE o onnonncionacicn nanonancnnonancanonoac nos 66 6 2 Free Software and Firmware Upgrades oooonnoconocccocccioncconncconncnnno 66 6 3 Battery Ch rging nia ada 66 Service Information 68 AI e Service Foriene a nes sua davcepadd a A la atia ties 69 Introduction nee eenean a e a aoe ae 71 Procedure 71 T2 Binary Mode Rules ci uses ATRETAN 73 Conversion of Values Transferred with Binary Commands 74 7 3 Binary Command Referentes rd aus 74 Set A TE 74 Set Scale 75 SetdBma Displianiiin at 76 Set High Resolution Display oooonconinccnincnnonnnocnconncconccconocnnoos 76 Query A A cde ase betecus ve scaautetanccenvnsediet 76 Query New
27. ation Integer value Total Duration Unit 0 Sample Period s 1 Seconds May be a fixed amount 2 Minutes of time or points one 3 Hours or many periods or 4 Days non stop 5 Weeks 6 Continuous 7 Predefined number of points Timestamp 0 Off Adds a time stamp for 1 On all logged data in the sample The following example sets a single data acquisition run for 90 minutes with timestamps at 4 hertz Example Response from 842 PE Text Command DSU 40901101 ACK lt CR gt lt LF gt lt enter gt 4 2 3 7 Set Trigger Level This command sets the internal trigger level when using the device in energy reading mode Text Command Parameters Return TLA Trigger Level percentage ACK Default 2 The value should be set between 1 and 100 floating point values are allowed In text mode you may add a symbol after the value for clarity Example Response from 842 PE Text Command TLA 15 4 lt enter gt ACK lt CR gt lt LF gt 4 2 4 Measurement Commands Control 60 4 2 4 1 Enable Statistics This command is used start stop and reset the statistics calculating process on the data currently being acquisitioned Text Command Parameters Return ESU 0 1 or 2 to Disable Enable or ACK Reset Default Disable Prior to enabling the statistics the user should use the LOG1 LOG2 and LOG3 commands to setup the data logging environment 4 2
28. ble the correction factor re select the Correction Factor multiplier offset in the Corrections submenu of the Settings menu Then select None in that submenu 2 3 3 3 Data Sampling Settings The 842 PE can display a complete statistical analysis of power or energy measurements The Data Sampling menu is used to set up the data sampling parameters for calculating the Statistics You have complete control over the data sampling Use the defaults or select your own sample rate sample period and the time period or number of points over which the statistics are to be performed The 842 PE can be set to either calculate the statistics for a single sample and stop or to repeat continuously Data can be collected for a few seconds or a few weeks You have the flexibility to handle any application from analyzing a single short pulse with high resolution to sampling performance over a period of months Selecting the Data Sampling mode in the Settings menu opens a Dialog Box where you enter the sample rate the sample period total duration and the time stamp if required The statistics being captured and calculated can be monitored by simply selecting Statistics in the Display menu You can switch back to any other display mode without affecting the measurement or the statistics You can also click the Reset button in the display to clear all the statistical parameters and start all over again by selecting the Start button In order to have a good
29. cnnnnonn 15 152 lt A gt Arrow A O eee 15 153 ENTER it a 16 LA NR e oo 16 LSS LEDS tree dd 16 1S6 SOI Kerala 16 1 6 Top Panel Descrip 16 2 System Operation 19 2 1 Accessing the Menu Structure iaa ea pal atadas 19 2 2 Making a Measurement a e 21 2 3 Top Level Menu SUE AnS 23 23 1 Dispara e a ees 24 2 3 1 1 Real Time Displaanin a 24 2 3 1 2 Histogram Display ii 25 2 3 1 3 Line AAA II 25 ZA Statistics Display assists des Comedies cate tones 26 Ade Peak Power Display cantidad 26 2 3 1 6 Status Display A cddecncseaeaeoaeas 27 DSM VIE WEE Accor nen Beate Siete nda 27 RIAS Ple ida 27 ILOS AV POWT cas n a a a a a 28 PILO ZOOM hre hs A E RES 28 2 3 1 11 Digital Tuning Needle Display eee 28 23 2 Scale NTR tet cs lal ta deel a tate eh eae Ssh ote cha 28 23 3 Settings Ment sad dd 29 2 3 3 1 Wavelength Ea 30 2 3 3 2 Corrections Setting cti 30 2 3 3 3 Data Sampling Sein es icsscrcensiecesssisonaserdeaacronsen 32 2 3 3 4 Period Multiplier cick aia tach aeenasees 37 23 9 E Setting jets 4a eediads ete aergramerates 37 23 3607 Referenc Va ina 38 2 3 3 7 Save and Load User Settings cccsccsssccessseees 39 23 38 PON US 39 UD COMUNICA ON A id 39 Pe AO PUMICE O snc iaeuaabaeatass vende 40 Za Peak POWet cis ad 40 X34 Control le 40 Dad Zero o A E AE TA 40 2342 A cones 41 2343 a o e tke 41 ZAR STA tISTIOS MOS si li 42 2 3 4 5 Relative Mode td a 42 2 540 Energy Molen a 43 DIAT AA u n i a E
30. column data is tab delimited Using the data has never been easier If you drag the icon of your file onto the Excel icon or an open Excel spreadsheet your data will automatically be put into the first one or two columns of a new spreadsheet You can also open your file from within Excel Just click Finish on the first screen of Excel s Text Import Wizard when it pops up You can also copy and paste the data from your file into other files and applications 2 3 4 4 Statistics Mode Use this option to activate the statistics computations Select Start in the submenu and the 842 PE will start compiling statistics Select Stop in the same submenu to turn the Statistics mode off When you stop the statistics the last values remain in the statistics display window for you to view later If you click start again the 842 PE will resume the statistics from that point compiling the new measurements with the previous Click Reset and all the statistical parameters will be cleared and set to zero If you click Reset without stopping all the statistical parameters will be cleared and the statistics will begin from zero automatically These same controls appear as buttons in the Statistics Display window The default when you power up the 842 PE is off 2 3 4 5 Relative Mode Relative mode is similar to Zero Offset but it displays the measurement as a percent difference from the value on screen when this option is selected The reading will become zer
31. cted to a PC it emulates a standard serial port This means that it is possible to connect many 842 PE meters to one computer without tying up the ordinary serial ports while keeping a simple interface for which designing software is easy The 842 PE can function using the USB port power only It does not utilize the battery energy when linked to a computer through the USB port 6 2 Free Software and Firmware Upgrades Keep up to date with the latest version of the 842 PE software including new features and options As new and improved versions of the device s firmware are created it is in your best interest to update your 842 PE The latest device firmware can be downloaded from the Newport website Access our website at www Newport com Go to the 842 PE data sheet page Click on the name of the 842 PE upgrade instructions file to open or download the instructions You may want to print the instructions Find the file that corresponds to your 842 PE and follow our simple easy to use instructions In summary you will download and execute the file by selecting it and pressing the return key it will extract and start the Firmware Updater automatically You will set the 842 PE in Update Mode by turning it off and holding the RIGHT arrow key while turning it on again Make sure that the correct COM port is selected in the Firmware Updater You can use the Test communication with device button to make sure that everything is well linked If
32. ction 2 3 1 a Digitally for real time measurement b Ona digital needle for an easy visualization of the laser beam power variation during laser fine tuning c Ona histogram to allow the laser beam s long term stability to be evaluated 2 3 Top Level Menu Structure This section describes in detail the first group of menus essential to the 842 PE operation Refer to Figure 2 3 for a schematic view of the menu structure The menus differ depending on the type of detector that is currently being used The Display menu lets you view your measurement in various ways The Scale menu allows you to fix a specific measurement scale instead of autoscaling Use the Settings menu during setup to select the best parameters for the measurement task at hand These menus provide the flexibility needed to accommodate a wide variety of measurement conditions The more active controls you are likely to use during your measurements are in the Ctrl menu They are described in Section 2 3 4 24 Display Settings V Real Time View File Auto Wavelength Save Settings Histogram Fluence Zoom In Corrections Load Settings Line Plot Avg Power Zoom Out Data Sampling Power Unit Statistics Zoom Period Multiplier Communication gt Peak Power Tuning Needle Trig Level 2 0 Fluence gt Status Refer Values Peak Power gt Fig 2 3 View of the first group of 842 PE menus 2 3 1 Display Menu The various displays offered by the 842 PE allow y
33. cts returned without an RMA E mail rma service newport com When calling Newport Corporation please provide the customer care representative with the following information e Your Contact Information e Serial number or original order number e Description of problem 1 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 continue to operate with this problem Or is the system non operational e Can you identify anything that was different before this problem occurred Safety Information Do not use the 842 PE if the instrument or the detector looks damaged or if you suspect that the 842 PE is not operating properly Appropriate installation must be done for water cooled and fan cooled detectors Refer to the specific instructions for more information The user must wait for a while before handling these detectors after power is applied Surfaces of the detectors get very hot and there is a risk of injury if they are not allowed to cool down Note This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against ha
34. d is selected with the J Enter key from all subsequent measurements Subsequent measurements will be relative to this zero power level The main purpose of this option is to remove measurement errors caused by either thermal noise in the case of high power detectors or ambient light levels in the case of photodiodes in the environment of the detector This can be caused by the fact that the detector has not been thermally stabilized OR there was a heat or light source in the field of view of the detector when the 842 PE was turned on for example the hand or body of the user Use this function once your detector has achieved thermal equilibrium to ensure accurate measurements 41 Display Scaled Settings MY Zero Offset Analog OUT About 842 PE Acquire Data Anticipation Service Transfer File gt Display Hi Res Stats Mode Set Diode Zero Relative Mode View Data gt Energy Mode Y Attenuator Fig 2 16 View of the Ctrl Menu Structure For instructions on the proper way to adjust the offset to zero your detector see steps 8 10 in Section 2 2 This feature is only available when using High Power Detectors 2 3 4 2 Acquire Data When you select Start the 842 PE begins storing data according to your Data Sampling settings see Section 2 3 3 3 and Table 2 2 Those settings will control the rate at which memory is used The Stop command halts the data recording but the 842 PE will continue to provide measurements to t
35. display option allows you to select between dBm and Watts This option is available only in photodiode mode when using low power 918D Series or 818 Series detectors 2 3 3 9 Communication The Communication option allows you to change the baud rate of the serial port so that the 842 PE can communicate with your computer You need to know the baud rate of your computer The possible baud rates are 2 3 3 10 Fluence The fluence display mode will give you the energy density in joules per square centimeter J cm or the power density in watts per square centimeter Watts cm Using this setting the user must enter the surface area of the beam at the detector surface in square centimeters or enter the beam diameter in centimeters for a round beam 2 3 3 11 Peak Power In energy mode the Peak Power display mode is used to convert a pulse energy measurement to its peak power value in watts The user must enter the pulse width Units from picoseconds to milliseconds are available xi Pulse 1 2 hSec y Close Fig 2 15 Pulse Width setting for the Peak Power mode 2 3 4 Control Menu This section gives a complete description of the last group of menus and options available on the 842 PE in the Control and Help menus You can refer to Figure 2 16 at any time for a schematic view of the advanced menu structure 2 3 4 1 Zero Offset This function subtracts the current power reading on the display at the moment the comman
36. e using the up and down arrow keys then press the J Enter key instead The keypad data entry dialogue box shown in Figure 2 2 will pop up to allow you to enter a custom value When you are finished use the RIGHT arrow key to select the CLOSE box and press the J Enter key Table 2 2 defines the various parameters The key points to remember whether using a High Power or Energy Detector are Sample Rate Sample Period Total Duration Controls how fast you collect data Ex 10 points second or 50 of pulses Controls how much data the statistics are Ex 5 minute or 1 day averages computed for Controls how long the 842 PE will acquire Ex 1 period 5 hours or 1000 pulses data and or do statistics Often the Total Duration and Sample Period will be the same but the 842 PE gives you the flexibility for any application For example with the 842 PE you can see 5 minute averages of your laser performance as you check it during the day and have it stop and hold the last 5 minutes worth of statistics after 20 hours Data Acquisition x Sample Rate fio 4 pts Second 7 Sample Period fio 4 Minutes y Total Duration fi J Periods y Time Stamp Y N No y Fig 2 13 Data sampling parameters window 35 Table 2 2 Data Sampling Parameters PARAMETER Choices Description Default Sample Rate Integers Sets the time between each sample Specify itas 10 Power 0 to 100 a number of points per unit of
37. e you can enter the same multiplier as 0 925 or 92 5 21 Sensitivity V J 200 00 7 8 9 O R 4 5 6 Fig 2 2 The Dialog Box 2 2 Making a Measurement This section will show you the fastest way of making a laser power and energy measurement with the 842 PE and a Newport power or energy detector The 842 PE Handheld Power and Energy Meter automatically recognizes all Newport low power high power and energy detectors terminated with a15 pin connector All calibration and technical data required for optimum operation of the detector will be automatically downloaded from the EEPROM in the DB15 connector This data includes sensitivity model serial number version wavelength correction factors and time response Quick power and energy measurement procedure 1 Install the power or energy detector head on its optical stand 2 Turn the 842 PE off and connect a compatible power or energy detector see Table 1 2 below to the 842 PE using the PROBE INPUT JACK see Fig 1 2 It is necessary to turn the 842 PE off before connecting a new detector in order to prevent any loss of information from the detector EEPROM and to read the detector EEPROM Detectors compatible with 842 PE Power and Energy Meter 818P Series High Power Detectors 818E Series Energy Detectors 918D Series Low Power Detectors 818 Series Low Power Detectors with conn
38. e Autoscale is deactivated when in Energy Mode This command is a toggle so a checkmark indicates when it is on Select it again to turn it off The default is off Keep in mind that high power detectors are optimized to sustain high average power not high peak energy Always keep the energy density below the maximum energy density quoted in the manual for that specific detector The single pulse energy measured in Energy Mode is precise to 5 of the power measurement calibration This is larger than the uncertainty in the power measurement typically 2 5 because the energy calibration is computed from the power measurement calibration A precision of 3 in the single pulse energy measurement can be achieved if the power detector head is specifically calibrated to measure in single pulse energy mode Please contact your local Newport distributor or nearest Newport office for more information on obtaining a single pulse energy measurement calibration 2 3 4 7 Analog OUT This function turns the analog output on and off This command is a toggle so a checkmark indicates when it is on The default is off This output allows the monitoring of the laser average power or energy with external equipment such as an oscilloscope a computer with an analog interface a voltmeter etc The output signal represents the amplified and anticipated power detector response in the case of a power measurement In the case of an energy measurement t
39. e Enter 1 key to activate the function When a menu option has an arrow D gt at the end pressing Enter 1 or the Right Arrow key gt opens a submenu where you can select the function For example in the case of the Setting menu first select Corrections with the Down Arrow key followed by the Enter 1 or the Right Arrow key gt gt to access the submenu Move to the desired option with the arrow keys and press the Enter 1 key to activate 20 Display Scale SETS Wavelength Review Settings Corrections None gt Data Sampling Multiplier 1 0 1200000 Period Multiplier Offset 1 Trig Level 2 Multiplier 2 Refer Values Offset 2 Fig 2 1 The Menu Bar Some menu options require additional information to be activated properly In this case a dialog box see Figure 2 2 appears There you enter the setting values of your choice Use the Arrow keys to highlight a number and press the Enter 1 key to select it The selected number will appear in the upper box Repeat the operation until the desired number has been fully entered Then go to OK and press Enter 1 to validate your number You can correct a mistake by selecting the Back button lt located in the bottom right of the dialog menu Use the Decimal button to enter decimals The Percent button gives you the flexibility to enter a value as a percent rather than a fraction For exampl
40. e Settings menu define user adjustable acquisition parameters All correction factors that will affect the reading can be easily programmed That could be for a beam sampler attenuator or other optics that require you to multiply and or add offsets to the detector reading You can also adjust for a wavelength other than the calibration wavelength A custom correction 30 Display Scale Swi factor can also be keyed in Pre programmed wavelength correction factors dedicated to each detector head are also available and automatically loaded from the detector EEPROM Data Sampling and Trigger Level as well as the commands for saving and loading your settings are also found in the Settings menu Wavelength Save Settings Corrections Load Settings Data Sampling Power Unit Period Multiplier Communication Trig Level 2 0 Fluence Refer Values Peak Power Fig 2 11 Settings menu 2 3 3 1 Wavelength Setting The Wavelength menu is used to select the proper wavelength for the detector based on the light input It applies a correction to adjust for the variation in responsivity at different wavelengths When a new detector is connected to the meter and the meter has been re booted the calibration wavelength is the default selection The checkmark beside the wavelength shows the current selection To change the wavelength select an appropriate wavelength from the Wavelength menu The 842 PE only allows you to choose values that fa
41. ector is not thermally stabilized OR there is a heat source in the field of view of the detector when you turned on the 842 PE To reset the zero wait until the reading has stabilized and select Zero Offset in the Ctrl Control menu Then select Rezero You are now ready to make an accurate measurement To turn the Zero Offset off select Off to reselect the previous offset select Undo Low Power Detector Zeroing 9 To set a Low Power Detector to zero select Ctrl Set Diode Zero and press the J Enter key A message appears requesting that you put the cover on your photodiode and then press the J Enter key The 842 PE passes through all the scales to determine the zero diode for each scale The message Diode Zero Done appears when the 842 PE has determined the zero diode 23 Notes e Refer to specific power detector documentation for complete installation and operating instructions e The 818P series High Power Detectors are thermal sensors that are sensitive to temperature variations For high precision measurements it is recommended to e Allow the power detector temperature to stabilize before zeroing the 842 PE e Do not touch the detector head when handling the power detector Touch only the stand e Avoid forced airflow or air drafts around the detector 10 Apply the laser beam to the detector head 11 The laser beam average power or energy will be displayed in three ways for your convenience see se
42. ector adapter Table 1 2 Detectors compatible with the 842 PE 22 ce 4 5 Fasten the DB 15 thumbscrews Switch the 842 PE ON using the I O key When using an 818 Series Low Power or 818P Series High Power detectors the 842 PE will default into power measurement mode When using 818E Series Energy detectors it will default into energy measurement mode The meter will also default to autoscale If you are using an 818 Series Low Power detector to obtain measurements in dBm select Settings Power Unit dBm Remove the detector s protective cover and put the detector head into the laser beam path Leave it there for a few minutes until the detector has reached an equilibrium temperature The entire laser beam must be within the sensor aperture Do not exceed maximum specified power or energy densities For the most accurate measurement spread the beam across 60 to 80 of the sensor area NOTE Power detectors can be used with both CW and pulsed lasers Energy detectors can only be used with pulsed lasers Zero Offset Adjustment steps 7 and 8 If using an 818P Series High Power Detector proceed with step 7 If using a 918D Series or 818 Series Low Power Detector go to step9 For 818E Series Energy Detectors jump to step 11 Te Block off laser radiation to the detector The power read by the 842 PE when no laser beam is incident on the detector may not be exactly zero This is due to the fact that the det
43. ffsets by selecting indexing them in the first parameter 1 or 2 and entering a new value in the second parameter 58 The following example sets offset 1 equal to 1 5 milli Example Response from 842 PE SOU 1 0 0015 lt enter gt ACK lt CR gt lt LF gt The other option available is the Zero offset The Zero offset operation is done first before those of the Multipliers and Offsets 4 2 3 5 Query Data Sampling Settings This command is used to read the current data sampling settings Text Command Return RDS Sampling Settings info A string is returned containing all of the data sampling settings 4 2 3 6 Configure Data Sampling This command provides the data sampling parameters for the logging and statistics environments These settings are used when saving data on the device s data storage media and also to process statistics Text Command Parameters Return DSU Sample Rate Sample Rate Unit ACK Sample Period Sample Period Unit Total Duration Total Duration Unit Time Stamp On Off Defaults See Table 2 2 Parameters Sample Rate Integer value Times per unit Sample Rate Unit 0 Seconds 1 Minutes 2 Hours 3 Days 4 percentage of pulses energy only Sample Period Integer value Sample Period Unit 0 Seconds At the end of a period 1 Minutes statistics are reset 2 Hours 3 Days 4 Weeks 59 5 Pulses energy only Total Dur
44. ffuser Calibration Procedure Introduction Newport s 818E Series Energy Detectors are not normally calibrated with the 818E DA 25 50 and 818E DG 25 50 Attenuator Diffusers Therefore to achieve accurate measurements the user must perform a calibration The calibration procedure is relatively simple You will first make a measurement without the attenuator and then with the attenuator The ratio of these two measurements will be your correction factor Using the 842 PE Power amp Energy Meter make sure that the Attenuator setting in the Control menu is not checked That is it must be off Otherwise accessing the wavelength correction Settings Corrections menus would be impossible Procedure Step 1 Set up your energy detector to measure the energy of your pulsed laser If you are working at a wavelength other than the calibrated wavelength first make the proper correction by following the procedures given in Section 2 3 3 1 Wavelength Setting Make sure that the energy level is below the detector s damage threshold and your laser still has good stability Step 2 Apply energy for a few minutes to warm up the detector This will reduce any thermal bias Step 3 Measure the energy level without the attenuator To reduce random uncertainty you should average a number of shots We recommend at least one hundred shots This should reduce random errors by a factor of 10 square root of N assuming a Gaussian distribution S
45. find the factors on the Calibration Report for Low Power Detectors or the Personal Wavelength Correction certificates for High Power and Energy Detectors that are shipped with your detector 25 Display Scale Settings Ctrl 818P 015 19 15 20 mW o gt 0 00 30 0 mW Head 15 20 mW Res 14 65 uW 1064 nm Fig 2 4 Real Time Display With an 842 PE you can also choose either the high resolution mode for the most significant digits available or the standard resolution to filter out unimportant fluctuations in measurement This is a setting in the control Ctrl menu of the 842 PE 2 3 1 2 Histogram Display The histogram option gives a quick look at the laser beam s long term stability and trends The histogram adds new data points at a rate of 3 Hz and is dynamically scrolled to the left for each new point as soon as it reaches the right side of the screen Display Real Time V Histogram Line Plot Statistics Peak Power Status Scaled Settings fen __ View File Fluence Avg Power Zoom Tuning Needle gt Fig 2 5 Display Options Menu 2 3 1 3 Line Plot Display The line plot also shows the trends in your data Actual values are sometimes easier to read than with the Histogram 26 2 3 1 4 Statistics Display In Statistics display mode the statistical analysis screen pops up on top of the Main display This screen Figure 2 6 gives a complete statistical
46. gital Needle Display a 28 2 10 CAM did 29 2 11 Settings MEU iia tiii a 30 2 12 Settings Corrections Menu li bz 31 2 13 Data sampling parameters Window oooooocccocconccononononanoncnonncnnonnnonos 34 O A acid eeu 38 2 15 Pulse Width setting for the Peak Power MOde ooooonocniconciinconono 40 2 16 View of the Ctrl Menu Structure ooooocnnccnocconnnoncnoncnononnnonncanccn nenas 41 11 1 General Information 1 1 Introduction To obtain the full performance from the 842 PE we recommend that you read this manual carefully The 842 PE hand held optical meter is a microprocessor based power and energy meter that uses the latest technology to provide a multitude of options in a user friendly environment It is a complete power and energy meter providing the user with everything from statistical analyses to data logging It allows the user to store up to 50 000 data points in its internal memory When a detector is connected to the instrument its specific model type and calibration information is downloaded into the meter enabling the appropriate measurement ranges and units of measure When connecting a 818E xx xx F fast energy dectector the 842 PE enters into the metallic mode to ensure proper measurements The 842 PE also has improved performance in joulemeter mode that enables 2 additional lower measurement scales The 842 PE firmware can be updated over the internet by connecting the USB or the RS 232 port to a personal compute
47. he display The 842 PE records the data in volatile RAM memory Data in this memory is lost when the 842 PE is turned off Select Save Data in Flash to save the data in the FLASH memory to keep it after the 842 PE is turned off You can also select Restore Data from Flash to transfer data from the FLASH back to the RAM memory This feature is useful when you want to keep the data in the 842 PE until it can be transferred to a computer at a later time or another location 2 3 4 3 Transfer File This option allows you to send a data file stored in the 842 PE s RAM memory to a computer through the RS 232 or USB port Establish a HyperTerminal connection between the PC and the 842 PE see Section 3 2 if necessary You will be able to view transferred data in the HyperTerminal window To record data as a file on a PC At the top of the HyperTerminal window go to the Transfer dropdown menu and execute the following sequence 42 Transfer Capture text enter a filename Start After you have Started and Stopped a data acquisition or restored the data from Flash memory on the 842 PE select Data Transfer in the Ctrl menu or send the serial command FDL 0 from the PC This will send your data to the PC Return to the Transfer drop down menu in the HyperTerminal window Transfer Capture text Stop The data is now in the file you named in text format with linefeed separated values If you used a time stamp the second
48. he output signal is a DC voltage representing the pulse energy value In order to improve the signal to noise ratio the 1 volt value corresponds to the full scale reading of the selected range The measured power or energy is then related to the output voltage and to the selected range according to the following equations Power V x Range output Energy V x Range output For example an output of 0 4 Volts on the 30 W scale corresponds to 12 Watts of laser power If on the 10 W scale then 0 4 Volts signifies 4 Watts 2 3 4 8 Anticipation Use Anticipation to deactivate the power meter acceleration software that provides the anticipation response By using advanced algorithms and known properties of the detector this software allows the 842 PE to provide a very accurate power measurement a few seconds faster than the natural response of a thermopile power detector It accelerates the natural response by a factor of 5 to 10 Turning off the anticipation will result in a slower response but it can provide a more stable measured value in a noisy environment A checkmark shows when it is activated It is a toggle switch so select it to change it between off and on The default is on 2 3 4 9 Display Hi Res This menu item is a toggle switch that turns on and off a higher precision display mode It will increase the value displayed numerically on the screen by one significant digit especially for relative changes in power
49. his is specified in V W for the Active Wavelength Divide this value by 100000 Active Wavelength same Scale Min Power 818P same series OR Max Power 818E series 9 Scale Max Power 818P same series OR Max Energy 818E series 10 Scale Min Energy same 11 Scale Max Energy same 12 Current Scale same 13 Energy Mode 1 On 0 Off 14 Anticipation 1 On 0 Off 15 External Trig 1 0n 0 Off 16 Trig Level Integer number representing a percentage from 1 to 100 Divide this value by 1000 17 Zero Offset Divide this value by the Zero Offset Unit 18 Zero Offset Unit This is a divider 19 Multiplier 1 Divide this value by the Mult 1 Unit 20 Mult 1 Unit This is a divider 21 Offset 1 Divide this value by the Offset 1 Unit 22 Offset 1 Unit This is a divider 23 Multiplier 2 Divide this value by the Mult 2 Unit 24 Mult 2 Unit This is a divider 25 Offset 2 Divide this value by the Offset 2 Unit 26 Offset 2 Unit This is a divider 27 Currently Logging data 1 On 0 Off 28 Analog Output 1 On 0 Off 29 Resolution Divide this value by the Resolution Divider 30 Resolution Divider This is a divider 31 Currently Calculating 1 On 0 Off Stats 32 High Resolution Display 1 On 0 Off 33 Min Wavelength 0 to 19 34 Max Wavelength 0 to 19 35 Upper Bound Divide this value by the Upper Bound Unit 84 36 Upper Bound Unit This is a divider 37 Lower Bound Divide this value by
50. i 43 e E AION sicn nien A A 44 2349 Display Hi RES aaa 44 2 3410 View DATA ro its 44 DD A A A A 44 23412 Set Diode LO ii tia 45 DIA A Raat ein foes a Nia ake Ma tulad Sees Sa hai 45 3 Computer interfacing 46 Bd TAS AAO cdot since nea A a sans a ate 46 Bo CU eal aes ed ee a e 47 3 2 1 COM Port Verification siii as 47 3 2 3 HyperTerminal Settings Shortcut eee eeceseeseeeeees 48 BiB SOWAT enini aa aa a aaa aa ii 48 4 Command Reference 49 4 1 Commands and Queries ia 49 4 1 1 A 49 4 1 2 Command Directory tii iii 51 42 Seral commands eigi A a E aherts 52 4 2 1 Display Commands cidad 52 ADA Set Display nno a ai 52 ASD V2 S t Sale vx ani E 52 4 2 1 3 A ares ohana aes 53 4 2 1 4 Set High Resolution Display eeeeeees 54 4 2 2 Measurement Commands Data Acquisition 54 4 2 2 1 Query Current Vall ral pi 54 4 2 2 2 Query New Value Ready ooooocococcniocccocncconoconocnnos 54 4 2 2 3 Query Statistics Data 55 4 2 2 4 Set Logging Start Stop nc tknuntcaisncensiun 55 42 235 Me DOWN das 55 4 2 2 6 OWING AG Calais ctcves beeline eo 56 4 2 3 Measurement Commands Setup ooocnoccnocnconncnonncinnnnos 56 4 2 3 1 Set Wavelength Correction ccceeceeseeeteeees 56 AD 3 2 Set Att nuatot A ena 57 42 933 Set Muppets 57 BDA Set Offsets A a 57 4 2 3 5 Query Data Sampling Settings eee 58 4 2 3 6 Configure Data Sampling 0 0 0 ee eceeeteeeteeeees 58 4 2 3 7 Set Tod daa 59 4 2 4 Me
51. ics mode is activated Select Stop in the same submenu to turn the Statistics mode off When you stop the statistics the last values remain in the statistics display window for you to view later If you click Start again the 842 PE will resume the statistics from that point compiling the new measurements with the previous Click Reset and all the statistical parameters will be cleared and set to zero If you click Reset without stopping all the statistical parameters will be cleared and the statistics will begin from zero automatically Alternative From the Display menu select Statistics to enter the statistics display window The same commands are available there as buttons Selecting the Close button closes the window but does not turn off the Statistics mode or interfere with the calculations Selecting the Stop button 34 stops the calculation of new statistics but does not close the window so that you can review the final values The 842 PE uses default sample parameters unless you set them yourself To View the Statistics select Statistics from the Display menu To Set the Data Sample Parameters select Data Sampling from the Settings menu Figure 2 13 shows the window for setting the data sampling parameters Use the RIGHT arrow key to move through the parameters and units windows Move to the one you want to set Then use the PJ UP and DOWN arrow keys to change the value If you want to enter a value that is not availabl
52. l Power Supply Input 100 240 VAC 50 60 Hz Output 9 VDC 1 66 A 14 Power Meter Specifications Power Range 1 nW to 10 kW Low Power Scales with 918D and 818 Series detectors 10nW 30nW 100nW 300nW 1uW 3uW 104W 304 W 1004W 3004W 1mW 3mW 10mW 30mW 100mW 300mW 1W 3W High Power Scales with 818P Series detectors 30mW 100mW 300mW IW 3W 10W 30W 100W 300W 1kW 3kW 10kW Resolution digital 5 uW on the 30 mW scale Meter Accuracy 0 5 5 uV full scale Response Time accelerated 1 sec Sampling Frequency 200 kHz Statistics Current value Max Min Average Std Dev RMS stability PTP stability Time Energy Meter Specifications Energy Range luJ to 20 kJ Energy Scales 10013 30013 ImJ 3mJ 10mJ 30mJ 100mJ 300mJ 1J 3J 10J 30J 1003 300J 1kJ 3kJ 10kJ 30kJ Resolution digital 50 nJ Accuracy 1 0 50 pV lt 500 Hz 2 0 50 uV 500 Hz to 1 2 kHz 3 50 uV 1 2 kHz to 6 kHz MT mode 6 50 uV 6kHz to 10 kHz MT mode Default Trigger Level 2 Software Trigger Level 0 1 to 99 9 0 1 resolution Metallic mode hardware set to 3 Repetition Frequency 3 kHz in acquire data no missing point 2 kHz in statistics mode no missing point 3 10 kHz in acquire data ignores all laser pulses for 333us after laser pulse detection Statistics Current value Max Min Average Std Dev RMS stability
53. late the corrected value The 842 PE will then display the corrected value For example if you are measuring a laser beam passing through the 99 9 back reflector of a laser giving 1 1000 of the real value choose Multiplier 1 and enter 1000 in the dialog box The 842 PE will display the laser s actual power rather than the measured 0 1 sample on the main display The corrections are applied mathematically in the order shown in the menu Therefore to apply an offset before a multiplier you would enter a value for Offset 1 and a value for Multiplier 2 and leave Multiplier 1 at the default value The default value for the multipliers is 1 and the default for the offsets is 0 When a correction factor is active the Head value will be different from the displayed measurement The Head value is displayed at the bottom left of the screen The corrected measurement appears in the center of the screen see Figure 2 4 It is also essential to make sure that the actual measured value complies with the power and energy limits of the detector head The Autoscale option is the default selection You can select a specific scale but it must always be based on the actual physical measured value and not on the corrected values Of course the displayed values and the display scale selection are then calculated to take into account the correction factors 32 Note that the Statistics are computed for the corrected values only To disa
54. ll within the detector s range If you select or enter a value that is not valid an error message appears and the 842 PE automatically selects the default value When working at a wavelength not available in the Wavelength menu use the custom option in that menu and enter the wavelength you need The wavelength you enter must be within the range of valid wavelengths for the detector used The 842 PE interpolates a wavelength correction factor using the pre programmed data in the detector s EEPROM 2 3 3 2 Corrections Setting The user can apply up to 2 Multipliers or Correction Factors and 2 Offsets to the detector reading Correction factors are most useful when sampling a percentage of a powerful laser beam or correcting for absorption along an optical path The menu displays the values of correction factors that are being applied to the measurements They may also be viewed in the Display Status menu see Figure 2 8 31 Display Scale EE Wavelength Corrections None gt Data Sampling Multiplier 1 0 1200000 Trig Level Offset 1 2 0 Save Settings Multiplier 2 Load Settings Offset 2 Fig 2 12 Settings Corrections menu To activate the correction factor select Corrections in the Settings Menu and then select Multiplier or Offset A dialog box opens where you enter the correction value in percentage or in absolute value This number will then multiply or add to the actual measured value to calcu
55. ly used scale index see the Set Scale command 13 Energy Mode Is the 818P being used in Energy mode On Off or N A 14 Anticipation Is Anticipation enabled On Off or N A 15 External Trig Is the External Trig enabled On Off or N A 16 Trig Level Internal trigger level specified as a percentage 1 100 17 Zero Offset Currently used offset see Zero Offset command 18 Zero Offset Unit For Binary mode only 19 Multiplier 1 Value of the first multiplier 20 Multiplier 1 Unit For Binary mode only 21 Offset 1 Value of the first offset 22 Offset 1 Unit For Binary mode only 23 Multiplier 2 Value of the second Multiplier 24 Multiplier 2 Unit For Binary mode only 25 Offset 2 Value of the second offset 26 Offset 2 Unit For Binary mode only 27 Currently Logging data Is the device saving data Yes No 28 Analog Output Is the analog output enabled Yes No 29 Resolution Resolution of the detector 30 Resolution Divider For Binary mode only 31 Currently Calculating Stats Are statistics enabled in the device Yes No 32 High Resolution Display Does the device display more numbers after the comma On Off 33 Min Wavelength From 0 to 19 this is an index for the Wavelength table 34 Max Wavelength From 0 to 19 this is an index for the Wavelength table 35 Upper Bound For the Pass Fail test this is the upper bound 36 Upper Bound Unit For Binary mode only 37 Lower Bound For
56. mmands or Queries may be sent as text strings text mode or numerical values binary mode The 842 PE automatically recognizes whether the received data is a text command or a binary command You are therefore free to send data in either form at any time In this section we will only discuss text mode All commands will receive one of two possible responses data for Queries or ACK acknowledged for Commands All Commands or Queries must begin with an asterisk and end with a Line Feed lt LF gt Carriage Return lt CR gt or both All parameters must be separated by at least one space The case is insensitive Replies to Commands or Queries end with a Carriage Return lt CR gt and Line Feed lt LF gt 7 Binary programming should only be attempted by advanced programmers For information on using binary mode see Appendix B Binary Programming 50 Example Command Response from 842 PE Turn on backlight BKL 1 lt enter gt ACK lt CR gt lt LF gt Get data value CVU lt enter gt Current Value 0 001616 lt CR gt lt LF gt Check battery BAT lt enter gt The Battery Power is Low lt CR gt lt LF gt Get Statistics VSU lt enter gt Current Value 0 002013 Maximum 0 002011 Minimum 0 000000 Average 0 000001 Standard Deviation 0 000048 RMS Stability 7 181641 PTP Stability 18 296875 Time 455 Acquisition Time 600 lt CR gt lt LF gt In case of an er
57. n www Newport com This software basically transforms your PC screen into a large 842 PE screen enabling you to control and see your information from a distance while saving data LabView drivers are also available to let you customize 842 PE applications on your PC You can also upgrade the firmware on your 842 PE on the same web page see Section 6 2 for details 49 4 Command Reference 4 1 Commands and Queries The traditional serial communication interface also allows you to operate the 842 PE remotely If no automated acquisition is involved i e no programming we recommend using the 842 PE Series Software on the included CD because it is very simple to use In the case of automated data acquisition controlled by other software use the commands in Section 4 1 2 to control the 842 PE These commands are divided into two groups Commands and Queries Commands allow you to change the 842 PE s settings without using the 842 PE s keypad Commands do not yield any data The only response is a confirmation that the command has been executed Queries are used to retrieve data or to obtain information on the current status of the 842 PE They do not change the settings of the 842 PE they just return the requested information When it receives a command the 842 PE sends an acknowledgement of the command to the host device in the form of a short message describing the change that has been made 4 1 1 Command Format Co
58. nalog Output This command is used to enable or disable the output of the current value on the analog port of the meter Text Command Parameters Return ANO 1 to Enable 0 to Disable ACK Default Disabled 4 2 7 Communications Commands 4 2 7 1 Test Communication This command is used to test communication with your 842 PE The PC is communicating with the meter if you receive the ACK response Binary Command Return 1000 ACK 4 2 7 2 Init Serial Port This command is used to change the current baud rate of the serial port of the device Valid parameters are 2400 9600 14400 19200 38400 or 115200 Upon receipt of the command the 842 PE sends an acknowledgement and then closes and restarts the serial port at the new speed if the new baud rate is different from the current one You must also change the baud rate of your own serial port Text Command Parameters Return BRS new baud rate ACK Default 115200 65 5 Error Messages Error Comment 1 Command not found Command is invalid 2 Invalid Parameter The parameter value is out of valid range or not of expected type text numeric flag 3 Not Enough Parameters The expected number of parameters should always be sent 4 Head is not available Verify that the detector s DB15 connector is fully engaged with
59. nd all the parameters Binary data are sent from the PC in little endian format That is the data is sent in chunks of 2 or 4 bytes with the least significant byte sent first You can program the commands in decimal for sending from the PC The 842 PE send data in big endian format that is the most significant byte comes first You may need to convert to little endian depending on the software and computer you are using Binary command example Command Parameter backlight ON Text mode BKL 1 Binary mode in decimal 1003 1 2 byte word 4 byte word Byte Ist 2nd Ist 2nd 3rd 4th in Hex big endian 03 EB 00 1 00 00 1 01 as sent by PC in little EB 03 01 00 00 00 endian Replies to binary commands are also in binary mode and have a four byte header and a variable amount of parameters The header contains two words The first word is the error indicator 10 success 11 error The second word is an indicator of the size in bytes of the reply parameters or in the case of an error the error number An example of how you can use the binary commands is shown below in pseudocode Structure Definition of variables WORD Handle Reserves address space of a 2 byte word to store the variable Handle DWORD ParameterA Reserves address space of one 4 byte word to store ParameterA 4 byte word is a double word DWORD ParameterB 6 Reserves address s
60. nslation Header 0 10 0 16 010 ACK 0 16 16 bytes following header Reply parameters 0 0 0 1 0 0 0 2 0 0 0 4 83 79 76 79 0 1 version 1 0 2 extension 2 0004 4 characters coming 83 79 76 79 ASCII code for 842 PE 00 00 Query Detector Head Name Binary Command Return 1100 Model of the current head The following example is for an 818E 05 25 S Energy Detector There are four parameters in binary mode In this case they would be Binary parameters Example Header Acknowledge 10 2 byte word Length of transmission excluding 11 2 byte word header Reply parameters Length of Head name string 7 4 byte word Detector model name 818E 05 7 bytes 25 S Example Response from 842 PE Binary Handle 1100 7 818E 05 25 S Command Query Status Binary Command Return 83 1005 Current static and dynamic configuration values Configuration values Field name Binary Mode Data 1 Head Type 1 High Power Detectors 2 Energy Detectors 3 Low Power Detectors 2 Head Version same 3 Head Serial Number Size indicator The Serial number string is located at the end of the binary data 4 Calibration Sensitivity This is specified in V W for the Default Wavelength Divide this value by 100000 5 Default Wavelength same 6 Active Sensitivity T
61. nt conversion error Example Response from 842 PE Handle 1129 ACK Parameter 1 Parameter2 15 Parameter3 17 100u scale Query Data Sampling Settings Binary Command Return 1151 Sampling Settings info Binary mode returns numerical values in the following structure Binary Mode response Sample Rate Integer value of the sample rate Sample Rate Unit 0 Seconds 1 Minutes 2 Hours 3 Days 4 Percentage of Pulses Sampled Sample Period Integer value of the sample period Sample Period Unit 0 Seconds 1 Minutes 2 Hours 3 Days 4 Weeks 5 Number of Pulses Total Duration Integer value of the total duration of sampling or statistics Total Duration Unit 9 One Sample Period 1 Seconds 2 Minutes 3 Hours 4 Days 5 Weeks 6 Continuous loop when done 7 Predefined number of points Timestamp 0 Off 1 On Configure Data Sampling Binary Command Parameters Return 1152 Sample Rate Sample Rate Unit ACK Sample Period Sample Period Unit Total Duration Total Duration Unit Time Stamp On Off The following example sets a single data acquisition run for 90 minutes with timestamps at 4 Hertz Example Response from 842 PE Binary Command Handle 1152 ACK Parameter 4 Parameter2 0 Parameter3 90 Parameter4 1 Parameter5 1 Parameter6 0 Parameter7 1 Set Trigger Level Binary
62. nter gt 818E 05 25 S lt CR gt lt LF gt 4 2 5 3 Query Status This command is used to view data that is relevant to the current detector head Text Command Return STA Current static and dynamic configuration values Configuration values Field name Text Mode Data 1 Head Type Indicates whether the current detector is an 818P 818E 918D or an 818 Series detector 2 Head Version Number identifying the version of the detector head 3 Head Serial Number Alphanumeric string indicating the serial number for the head 4 Calibration Sensitivity Sensitivity at default wavelength in V W Default Wavelength Default Wavelength in nm Active Sensitivity Currently used sensitivity it may have been modified by variables such as the Active Wavelength Active Wavelength Currently used Wavelength in nm 8 Scale Min Power 818P OR 818P minimum scale index see Max Power 818E Set Scale command 62 818E Maximum power supported by the detector in Watts 9 Scale Max Power 818P OR 818P maximum scale index see Max Energy 818E Set Scale command 818E Maximum energy supported by the detector in Joules 10 Scale Min Energy Minimum scale index when reading energy 11 Scale Max Energy Maximum scale index when reading energy 12 Current Scale Current
63. o the same as with Zero Offset but when the power changes it will be displayed as a percent value This is useful for monitoring variations in laser power For example in a quality assurance application the user may just want to make sure the power does not vary more than 5 over a certain time period to qualify a system If the laser power is 40W when this is selected a laser power of 38 W would be shown as 5 To do this same task in power units you would select Zero Offset when the laser is at 40 W and 38 W would display as 2 W Refer to Recommendation use the Browse button to select the directory and folder you want the file in Enter the file name in that window and click Save 43 Zero Offset above This command is a toggle so a checkmark indicates when it is on Select it again to turn it off The default is off y Relative mode Relative mode is ON Relative mode Relative mode is OFF 2 3 4 6 Energy Mode This function allows you to measure the energy contained in a single pulse with an 818P Series High Power detector head This mode of operation gives access to the same options as when using an 818E Series Energy detector The only restriction is that the time delay between pulses Delay e Rep Rate must be more than three times the time constant of the detector Please refer to the instruction manual for the specific detector you are using The scale must be manually selected because th
64. one available Upon changing detectors and re booting a different scale menu will be available Figure 2 10 shows the scale menu for an energy detector 29 V Auto 100 uJ 100 mJ 300J 300 uJ 300 mJ 1 kJ 3 mJ 3J 10 mJ 10J 30 mJ 100 J Fig 2 10 Scale menu The Scale Menu is used to select the signal level read with a detector head When a new detector is connected the autoscale is the default option In this condition the 842 PE automatically selects the best scale for the value being measured The checkmark beside the scale number shows the currently selected scale To change the scale simply select a scale value from the appropriate range The 842 PE only shows scale values that fall within the detector head s range When in a manually selected scale you should always use the next higher scale to the measured value for maximum precision Special care must be taken in the case of widely varying pulse energy to ensure that every pulse is detected Contrary to the case of a power measurement where the autoscale adjusts continuously to the measured value the autoscale in energy mode bases its scale selection on the energy of the previous pulse A pulse with energy less than 2 of the energy of the previous pulse will not be detected To avoid this problem set the scale manually to a lower level In this case you measure this lower level when the higher energy pulses are saturated 2 3 3 Settings Menu Options in th
65. or energy Absolute accuracy depends on the detector head 2 3 4 10 View Data Use View Data to transfer a file in the notation you would like to see it in scientific or standard To transfer the file in scientific notation select Ctrl Sci Notation To transfer the file in standard notation select Ctrl Std Notation 2 3 4 11 Attenuator This on off toggle function is only activated when using a 918D Series or 818 Series Low Power detector It allows the user to select whether the attenuator 45 is on or off When attenuator on is selected the ATT indicator will appear on the main display next to the detector model number 2 3 4 12 Set Diode Zero 2 3 5 This menu item is to make a zero offset on all the scales available To set the zero offset on all scales of a Low Power Detector select Ctrl Set Diode Zero and press the Enter key A message appears requesting that you put the cover on your photodiode and then press the Enter key The 842 PE passes through all the scales to determine the zero diode for each scale The message Diode Zero Done appears when the 842 PE has determined the zero diode This menu contains any help and service information available for this version of the 842 PE firmware That includes About 842 PE to identify the firmware version currently loaded in the instrument as well as contact information for Newport service Future help FAQ and detector head
66. ou to quickly view your measurement in several different ways You will appreciate the easy to view high resolution 58 x 38 mm graphic the LCD display and the backlight for use in poor ambient light conditions The Display menu includes five options see Figure 2 3 that allow you to select the best way to display the measurement according to your specific needs You can switch from one option to another without interfering with the measurements 2 3 1 1 Real Time Display This display is automatically selected when a detector is connected to the 842 PE The top and bottom of the screen show important settings so you can see the conditions as well as the measurement see Figure 2 4 The Power or Energy digital display is presented in giant format for easy reading in all conditions Directly below the Bar Graph display as wide as the screen presents the measurement in an analog format very useful for rapidly varying values Displayed on the upper left part of the screen is the Detector Model Under the Bar Graph is the current Scale At the bottom of the screen the leftmost box contains the actual power or energy received by the head before any correction factors are applied The center box gives the resolution and the rightmost box displays the wavelength The resolution is the smallest increment that the current value may change on a given scale The wavelength value tells you what NIST based calibration factor is currently being used You can
67. pace of 6 double words to store an array of 6 parameters called ParameterB PackedData Later in the program Handle 1003 Assign the value for the Backlight command to Handle ParameterA 1 Assign to value for ON to the variable ParameterA SendStringToSerialPort PackedDa This routine transfers the data found at the ta 6 address of structure PackedData to the serial port 6 bytes used Conversion of Values Transferred with Binary Commands To prevent cross platform floating point conversion error all of the numerical values are transferred as integers That means floating point values must be converted The 842 PE meter multiplies the value and converts it from float to integer and then transfers it to you As a result you must convert and divide it by the same large number to obtain the original floating point value Unit Value Every value that needs to be adjusted as a floating point is transferred along with its divider Therefore 1 645 W would be transferred in two parts the integers 1645 and 1000 Simply divide the value by its unit to obtain the original data 7 3 Binary Command Reference The following is just a summary showing differences in the commands as they pertain to binary programming For complete information on the various commands see Section 4 2 in this manual Set Display Binary Command Parameters Return 75 1157 Display Mode ACK
68. port 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 To obtain warranty service contact your nearest Newport agent or send the product with a description of the problem transportation and insurance prepaid to the nearest Newport agent Newport Corporation assumes no risk for the damage in transit Newport Corporation will at its option repair or replace the defective product free of charge However if Newport Corporation determines that the failure is caused by misuse alterations accident or abnormal condition of operation or handling you will be billed for the repair and the repaired product will be returned to you transportation prepaid 69 7 1 Service Form A Newport Name Newport Corporation U S A Office 800 222 6440 FAX 949 253 1479 Return Authorization Company Please obtain RA prior to return of item Address Date Country Phone Number P O Number FAX Number Item s Being Returned Model Description Serial Reason for return of goods please list any specific problems 70 Notes 71 Appendix A Attenuator Di
69. pulse energy measurement of the energy mode is converted to its peak power Watts and is inversely proportional to the pulse length This function is active only in energy mode The user must enter the pulse width from picoseconds to milliseconds units using Setting Peak Power in the Settings menu 27 2 3 1 6 Status Display The Status Display mode shows all the major adjustable parameters currently active for the detector head in one convenient place see Figure 2 8 Head Name 818E 10 50 S SSE Multiplier 1 1 0000000 Offset 1 0 0000000 Multiplier 2 1 0000000 Offset 2 0 0000000 Wavelength 1064nm Trigger Level 2 0 Scale 1 000 mJ Analog Out Off Mode Energy Fig 2 7 Status display 2 3 1 7 View File The View File mode allows you to view data previously acquired Choose between standard Std notation and scientific Sci notation Digit Normal Close Head 818E 10 50 S Date 2003 09 10 10 34 34 Unit Joule Sample Rate 100 of Pulses Sample Period 500 Pulses Total Duration 1 Periods Fig 2 8 View File screen 2 3 1 8 Fluence In the Fluence display mode the energy or power measurement is converted into energy density J cm or into power density Watts cm and is inversely proportional to the surface area of the beam This function is active only in the energy and power modes The user must enter the beam size see Settings Fluence in the Settings menu 2 3 1 9 Avg Power
70. r The instrument s enhanced network capabilities take further advantage of the USB and RS 232 ports for data acquisition and remote control It can transfer data files to a PC for more sophisticated data analysis and respond to commands through the PC interface The CD included with this meter contains LabVIEW drivers that will transform your PC screen into a virtual 842 PE While having a copy of LabVIEW installed on your PC is required in order to use this CD LabVIEW is not needed for programming the instrument in general See Section 3 for communication with a computer Easy software and firmware upgrades Keep in touch with the latest improvements to our user friendly software You can download the latest software and firmware versions anytime from our website www newport com and install it on the 842 PE with the serial interface You will find all the necessary information on downloading and upgrading in Section 6 2 12 1 2 Unpacking Each Newport 842 PE hand held optical meter is thoroughly tested and calibrated prior to shipment Visually inspect your 842 PE after removing it from the shipping container If you see any damage retain all packaging materials and shipping receipts Any damage claim should be made promptly to the transportation company Notify the nearest Newport representative concerning the claim so that any repair or replacement can be arranged as soon as possible 1 3 Parts List The following is a list of
71. r than the Newport PM PS9 2009604 is used Please call Newport Corporation if extra power supplies are needed for a particular setup 2 SERIAL INTERFACE CONNECTOR RS 232 This interface allows remote control and data transfer between the 842 PE and a computer a terminal a printer or any device that has a serial communication port 3 USB INTERFACE CONNECTOR This interface allows remote control and data transfer between the 842 PE and a computer that has a USB communication port 4 Oto 1 VOLT ANALOG OUTPUT For monitoring laser average power or energy by using external equipment such as a chart recorder a computer with an analog interface a voltmeter etc In the case of a power measurement the output signal represents the amplified and anticipated power detector response In the case of an energy measurement the output signal is a DC voltage representing the pulse energy value The 1 V value corresponds to the full scale reading of the selected range This will provide the best signal to noise ratio The measured power or energy is then related to the output voltage and to the selected range in this manner Power V x Max of Range selected output Energy V x Max of Range selected output For example 1 00 V corresponds to 10 Watt on the 10 W range 0 25 V corresponds to 2 5 Watt on the 10 W range 0 10 V corresponds to 30 milliwatts on the 300 mW range Specifications Maximum output voltage 1V Ou
72. rameters Return LOG 0 to Stop ACK 1 starts a raw data acquisition 2 starts saving statistics 3 saves both raw data and statistics This command begins or stops logging data in the device s volatile memory This is done using the Data Sampling settings sample rate time period If you do not want to use the Data Sampling default settings you must use the DSU command prior to this one or set the Data Sampling settings manually on the meter The Logging starts when the command is issued The log file created in the device can then be downloaded to a PC using the File Download FDL command or it can be saved in the meter s EEPROM 4 2 2 5 File Download This command is used to retrieve a logged file from the device Text Command Parameters Return FDL File Sequence Number File data The file sequence number is required to select the file to be downloaded Providing zero as a sequence number selects the most recently logged file As soon as the command is issued the file transfer begins In text mode once the command is issued it is possible to start saving all received data until the terminator is received the terminator is the character string EOF followed by a line feed The current version of the 842 PE can only hold file in memory at a time Only zero is accepted as a parameter Look for updates on our website 56 The file data is structured Each record contain
73. rmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on it is suggested to try to correct the interference by taking one or more of the following steps e Reorient or relocate the receiving antenna e Increase the distance between the equipment and receiver e Connect the equipment to an outlet that is on a different circuit than the receiver e Consult the dealer or an experienced radio TV technician for help SYMBOLS The following international symbols are used in this manual A Refer to the manual for specific Warning or Caution information to avoid any damage to the product ee DC Direct Current Table of Contents Warranty 1 Declaration of Conformity 2 Technical Support Contacts 3 Safety Information 4 List of Illustrations 10 1 General Information 11 IN DANO GC AA n n a a 11 172 Unpacking it ty ERE ETE A As 12 LS Parts Listoner ressa e ea OS 12 1 4 General Specific OS visi al 12 1 5 Front Panel DescoptiO ioido iii ici 15 1 5 1 VO and Backlight Control Key ooooonnccnnnconocccoccnoncn
74. ror the reply string is in the following format Error X reason enter X is the error code and reason is an explanation See Chapter 5 Error Codes for a detailed description of errors Because all replies end with a CR or LF or both a text reply contains tabulations when many elements need to be separated in the string This is useful when exporting data to a spreadsheet 51 4 1 2 Command Directory DISPLAY COMMANDS Command Name Set Display Set Scale Set dBm Display Set High Resolution Display MEASUREMENT COMMANDS DATA ACQUISITION Query Current Value Query New Value Ready Query Statistics Data Set Logging Start Stop File Download Download points SETUP Set Wavelength Correction Set Attenuator Set Multipliers Set Offsets Query Data Sampling Settings Configure Data Sampling Set Trigger Level MEASUREMENT CONTROL Enable Statistics Set Energy Mode Set Anticipation Set Zero Offset Text Command SDU SSA DBU SHL CVU NVU VSU LOG FDL CAU SWA ATU SMU SOU RDS DSU TLA ESU SCA EAA EOA Description Change on screen display mode Manually set scale Toggle dBm unit on amp off Low Power Detectors only Toggles additional significant figures to the displayed reading Get the value currently displayed on the screen Determine if new reading is available Read statistics data Start storing data in meter EEPROM Retrieve a file stored in the meter Send the val
75. row keys function as quick access keys UP and Down keys Increase or decrease the scale selection after correction factor has been entered Note entering a correction factor disables the auto scale Left key Set or reset a zero offset Right key Activate the custom wavelength keypad 16 1 5 3 ENTER Key The ENTER key selects the highlighted option 1 5 4 Menu Key The Menu key gives access to the MENU BAR 1 5 5 LCD Screen 76 8 x 57 6 mm Liquid Crystal Display Screen 160 X 240 pixels Press the shift key and use the Up and Down arrow keys J to decrease and increase the LCD screen contrast 1 5 6 Shift Key The Shift key provides access to additional quick access keys Shift key right activate the attenuator for photodiode heads Shift key left open the data sampling settings menu Shift key up decrease the contrast level Shift key down increase the contrast level Shift key menu open the statistic menu 1 6 Top Panel Description Fig 1 2 842 PE Top Panel 1 EXTERNAL POWER SUPPLY INPUT JACK The input jack is for connecting the AC wall plug power supply provided with the instrument battery charger supplied with the instrument When using the power supply the internal battery pack is also being charged for use of the instrument without the power supply Input voltage required 9 VDC 800 mA A CAUTION Permanent damage may occur to the optical meter if an external 17 power supply othe
76. s a tag that specifies what it contains TAG Content of record 0 Raw Value 1 Time Stamp Raw Value 2 average max value min value ptp stability RMS stability standard deviation 3 average max value min value ptp stability RMS stability standard deviation average power The following example is for a file 400 bytes long with timestamps and containing a 20 char text header Example Response from 842 PE Text Command FDL 0 lt File 0 data gt lt EOF gt lt LF gt lt enter gt 4 2 2 6 Download data This command is used to send data to the serial port according to the data sampling setting The maximum transfer speed is 200Hz Text Command Binary Command Parameters Return CAU N A None Data in ASCII 4 2 3 Measurement Commands Setup 4 2 3 1 Set Wavelength Correction This command is used to specify the wavelength being used on the detector The EEPROM in the 15 pin connector on the detector contains measured spectral data for a wide range of wavelengths Ifthe wavelength input by the user is different from the predefined list of wavelengths on the meter a custom value is interpolated Specifying zero as a wavelength or providing an out of bound value as a parameter restores the default settings A valid value is set between the lowest and highest wavelengths supported by the device and it must be an integer value Text Command Parameters Return SW
77. s units Press the Enter key to validate the selection The 842 PE time will remain as long as the battery lasts To save your selection press Done Exit Mode The user must make a selection here in order to exit the data sampling parameters input window To close select Close and press Enter Close 37 Close To calculate the statistics select the Close and Close amp Start Statistics option and press Enter start Statistics To save the acquisition parameters and activate Close amp the data sampling select the Close and Start Start Acquisition option and press Enter The 842 PE Acquisition begins storing data in memory To calculate the statistics and save the raw data to Close amp memory at the same time select the Close and Start Both Start Both option 2 3 3 4 Period Multiplier The period multiplier applies to the graph It multiplies the period by the number entered For example if the original period is ten minutes and you enter two then the period will change to twenty minutes Use the period multiplier when using High Power Detectors only 2 3 3 5 Trig Level Setting The Trigger Level only functions if an Energy Detector is connected or if a High Power Detector is used in Single Pulse Energy Energy mode mode This option allows the user to change the trigger level to something other than the 2 of full scale default value This proves to be especially useful in
78. t Command Parameters Return SHL 1 to turn On 0 to turn Off ACK Default Off 4 2 2 Measurement Commands Data Acquisition 4 2 2 1 Query Current Value This command is used to query the value that is currently being displayed on the device s screen The value is displayed in Watts or in Joules not in dBm Text Command Return CVU Current value For example a 12 mW reading would be displayed like this Current Value 0 012 4 2 2 2 Query New Value Ready This command is used to check whether a new value is available from the device Though optional its use is recommended when used with single pulse operations Text Command Return NVU Available Not Available lt CR gt lt LF gt Example Response from 842 PE Text Command NVU lt enter gt New Data Not Available lt CR gt lt LF gt Note that the Query Current Value and Query Statistic Data commands will return the current values from the device even if they have not been updated since the last query 55 4 2 2 3 Query Statistics Data This command is used to read all the statistics data provided that the device has previously been set into statistic mode Text Command Return VSU Statistics All the data and relevant identifiers are formatted into a tab separated string 4 2 2 4 Set Logging Start Stop This command is used to log data on the 842 PE meter s EEPROM Text Command Pa
79. t should be connected at a time 3 2 Setup 3 2 1 COM Port Verification To verify the USB installation and find the COM port number click Start Settings Control Panel System Device Manager Instructions may vary with operating system and version For Win2000 XP there is an additional step between and System and Device Manager Scroll down to Ports COM amp LPT and double click that line One of the options should be Prolific USB to Serial Comm Port COM Note the COM port number You will need it for the next step 3 2 2 Establishing Communication You may use any serial communications software that you are familiar with The instructions given here are for HyperTerminal because it is widely available on PCs with Windows Select Start Programs Accessories Communications gt HyperTerminal To save communication settings enter a name for the connection In the drop down menu for Connect using select the COM port noted above Section 3 2 1 Select OK Input the following settings into the communications parameter window that appears next Bits per second 115 200 Data bits 8 Parity None Stop bits 1 Flow control None Click OK to begin entering serial commands in the HyperTerminal window TO ECHO COMMANDS The commands you type will not appear in the HyperTerminal window unless you configure the HyperTerminal to do so Only the response from the 842
80. tep 4 Install the attenuator Without changing the laser settings measure the energy level by averaging the same number of shots All laser settings must be the same as Step 3 including beam size and position on the detector Step 5 Repeat the first measurement Step 3 to make sure that nothing has changed during the procedure that would invalidate the calibration A change larger than the uncertainty of your measurements means that something in the laser or environment has changed You can either add this to your uncertainty when you use the attenuator or try to stabilize the laser and environment and begin again with Step 3 72 f The correction multiplier for the 842 PE will be given by _ Reading without attenuator no units Reading with attenuator Now use this calibration factor for the Attenuator Diffuser when using it at the wavelength established in Step 1 73 Appendix B Binary Programming for Advanced Programmers 7 2 Binary Mode Rules Binary commands Handles are much faster since the values are not converted for human comprehension and less data needs to be transferred They are expected to be sent with the correct number of parameters Otherwise an error message will be returned The binary commands are two byte words and all the following parameters are four byte double words The command is executed when the device receives the expected amount of data for the command handle a
81. the Lower bound Unit 38 Lower Bound Unit This is a divider 39 Reference Value Divide this value by the Reference Unit 40 Reference Unit This is a divider 41 Pass Fail Status 1 On 0 Off 42 Threshold 1 Failed 0 Pass 43 Autoscale query 1 On 0 Off 44 DBM mode query 1 On 0 Off Query Battery Power Binary Command Return 1006 1 2 or 3 one 4 byte double word Example Response from 842 PE Binary Handle 1006 3 as one 4 byte word in binary Command Set Internal Clock Binary Command Parameters Return 1165 day month year hour ACK minute second AM PM Set Backlight Binary Command Parameters Return 1003 1 to turn On 0 to turn Off ACK Set Analog Output Binary Command Parameters Return 1150 1 to Enable 0 to Disable ACK Test Communication Binary Command Return 1000 ACK Init Serial Port Binary Command Parameters Return 1004 new baud rate ACK 85 Appendix A Recycling and separation procedure This section is used by the recycling center when the monitor reaches its end of life Breaking the calibration seal or opening the monitor will void the 842 PE warranty The complete instrument package contains 1 Optical Power Energy Meter 1 power supply not manufactured by Newport 1 USB cable 1Battery pack 1 User manual CD ROM 1
82. the meter 6 Scale setting not available for specified head Refer to the Scale table in the Set Scale command 8 No Data available The current configuration cannot provide the requested data 10 Analog output is not available with External Cannot use the same connection for output and Trigger trigger at the same time 11 Anticipation is not available Make sure that the detector is in power reading mode 12 Statistics are not available Statistics must first be enabled 13 PWC is not available Make sure that the detector head version supports Personal Wavelength Correction 14 Invalid Command Too long The command must not be over 255 characters long 15 Too many Parameters The correct number of parameters must be sent to the device 16 Invalid Baud Rate Verify that the device supports the selected baud rate 18 Energy mode is not available with current Energy Mode works only with 818P Series High head Power Detectors 20 Statistics are already enabled Disable before re enabling 21 No storage space left Remove files from the storage media before logging new ones 22 Head is not a Joulemeter Make sure the head is an Energy Detector 23 Already logging data Disable before re enabling 24 File does not exist In order to download a file first run an acquisition or load it from the EEPROM 6 Maintenance 6 1 USB installation for the 842 PE The 842 PE has a mini USB type B port When conne
83. tput impedance 10 KQ Connector type Female 1 8 jack 18 5 PROBE INPUT JACK The 842 PE uses a DB15 female connector to mate with compatible Newport detectors See section 2 2 for compatible detector list 19 2 System Operation This section contains important information concerning the installation and operation of the 842 PE When delivered the 842 PE just needs the battery pack installed and it is ready foruse Just insert a detector head in the Probe Input Jack 5 in Figure 1 2 and press the I O key If the meter doesn t turn on the battery pack may be drained Please turn it off plug in the charger and let it charge for several hours before attempting to use again 2 1 Accessing the Menu Structure The powerful CPU of the 842 PE combined with the Windows CE operating system provide easy and intuitive access to all of its functions This user friendly Windows based interface is controlled by four Arrow keys an key Enter key and a Menu key For users familiar with Windows it works as any Windows menu with the ALT key being replaced by the F key Pressing the F key see Figure 2 1 provides access at any time to the menu bar and from there to the five main menus Use the Left and Right arrow keys to go from one menu to the next The selected menu drops down to show its options Use the Up and Down arrow keys to select the desired item from the menu Once the desired item is highlighted press th
84. u Scroll to Settings Refer Values Pass Fail Reset and then press the Enter key Pass appears on the screen as the default It only changes to fail if the current power triggers it Pass Fail Full Display mode Use this mode to see if the current power passes or fails The default is pass If the current power rises above the threshold or falls below it you will see fail In the Full Display Mode select Settings Refer Values Pass Fail to see the screen display pass or fail To get to the Menu Bar press the Menu key Analog Out The analog out mode can be used at the same time as the graphical mode or full display mode Use the Analog Out option to view the voltage with a voltmeter or with an oscilloscope The range of the output is 0 to 1 Volt When the voltage increases about the upper limit and fail is displayed the voltage rises When the voltage is between the threshold limits the graph is displayed and the voltage remains constant 2 3 3 7 Save and Load User Settings The 842 PE can remember and recall selected settings This option is activated under the Save Settings or Load Settings menu items The display contrast setting is also saved using this option The saved display contrast is automatically restored the next time the 842 PE is turned on All the other parameters are automatically loaded only when the same head is connected to the 842 PE 2 3 3 8 Power Unit The Power Unit
85. ues in ascii to the serial port with the data sampling setting Specify the wavelength Toggles attenuator correction Set the value of the multipliers Set the value of the offsets Get current data sampling parameters Set the data sampling parameters Set the internal trigger level when measuring pulse energy Start stop or reset the statistic calculations Turn energy mode on or off Turn power measurement anticipation on or off Zero the reading to remove noise INSTRUMENT AND DETECTOR INFORMATION COMMANDS Query Version Query Detector Head Name Query Status Query Battery Power Set Internal Clock VER HEA STA BAT CLK INSTRUMENT CONTROL COMMANDS Set Backlight Set Analog Output COMMUNICATIONS COMMANDS Test Communication Init Serial Port BKL ANO KPA BRS Get firmware version of the meter Get model name of the detector head Retrieve detector information and monitor settings Get state of remaining battery power Adjust time and date of meter Turn the display backlight on or off Enable or disable the analog output port Test communication between meter and PC Change baud rate of the serial port Handle 1157 1130 1159 1161 1200 1201 1202 1171 1172 N A 125 162 128 129 151 152 112 155 160 123 120 1001 1100 1005 1006 1165 1003 1150 1000 1004 Handle in the far right column is for Binary Mode It is given here for reference only Ignore if using Text Mode
86. very DWORD read must be divided by the following DWORD The file data is transferred in an interlaced fashion so that all data is followed by its Unit value The following example is for a file 400 bytes long with timestamps and containing a 20 char text header Example Handle 1172 Parameterl 0 Response from 842 PE 20 180 lt 20 letters Text Header gt 1 1 Tag type 1 2 1000 Time stamp 0 002 second 01243 1000000 Raw Value 0 001243 watt new Tag loop until data size reached Set Wavelength Correction Binary Command Parameters Return 1125 Wavelength ACK Set Attenuator Binary Command Parameters Return 1162 1 to turn On 0 to turn Off ACK 79 Set Multipliers Binary Command Parameters Return 1128 Multiplier 1 or 2 lt Multiplier ACK value gt In binary mode the value should be multiplied by 10000 and converted into an integer instead of a floating point value This is to prevent any cross platform floating point conversion error The following example sets multiplier 2 equal to 3 3 Example Response from 842 PE Handle 1128 ACK Parameter 2 Parameter2 33000 Set Offsets Binary Command Parameters Return 1129 Offset 1 or 2 lt Offset value gt ACK In binary mode an extra parameter is required the scale at witch the value is set This is to prevent any cross platform floating poi
87. y the Maximum Unit This is a divider This value should be divided by the Minimum Unit This is a divider This value should be divided by the Average Unit This is a divider This value should be divided by the Standard Dev Unit This is a divider This value should be divided by 1000 This value should be divided by 1000 Power measurement only Default is 0 Power measurement only Default is 0 Energy measurement only Default is 0 Energy measurement only Default is 0 Energy measurement only Default is 0 This value should be divided by the Avrg Power Unit This is a divider Energy measurement only Default is 0 This value should be divided by the Rep Rate unit This is a divider This value should be divided by the Uncorrected Value Unit This is a divider 78 Set Logging Start Stop Binary Command Parameters Return 1171 0 to Stop ACK 1 starts a raw data acquisition 2 starts saving statistics 3 saves both raw data and statistics File Download Binary Command Parameters Return 1172 File Sequence Number File data In binary mode the reply parameters are Size of the text header in bytes Size of the file s data in bytes Text header read as a text string size specified as parameter 1 File Data read as a stream of DWORDs 4 byte chunks You should keep receiving and saving data until the receipt of the correct amount specified as parameter 2 E

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