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Sample Experiments 

HR2000 High-Resolution Fiber Optic Spectrometer 

19

 

Application Tips 

If the signal you collect is saturating the spectrometer (intensity greater than 4000 counts), you can decrease the 
light level on scale in scope mode by: 

• 

Decreasing the integration time 

• 

Attenuating the light going into the spectrometer 

• 

Using a smaller diameter fiber 

• 

Using a neutral density filter with the correct optical density 

 

If the signal you collect has too little light, you can increase the light level on scale in scope mode by: 

• 

Increasing the integration time 

• 

Using a larger diameter fiber 

• 

Removing any optical filters 

 

Содержание Ocean Optics HR2000 Series

Страница 1: ...30 Douglas Ave Dunedin FL USA 34698 Phone 727 733 2447 Fax 727 733 3962 8 30 a m 6 p m EST Ocean Optics B V Europe Nieuwgraaf 108 G 6921 RK DUIVEN The Netherlands Phone 31 0 26 3190500 Fax 31 0 26 319...

Страница 2: ...consent of Ocean Optics Inc in any form of binding or cover other than that in which it is published Trademarks Microsoft Windows Windows 95 Windows 98 Windows Me Windows NT Windows 2000 Windows XP a...

Страница 3: ...r Specifications 7 HR2000 Spectrometer Specifications 7 System Compatibility 8 20 Pin Accessory Connector Pinout 8 20 Pin Accessory Connector Pinout Diagram 9 20 Pin Accessory Connector Pin Definition...

Страница 4: ...dix A Calibrating the Wavelength of the HR2000 31 About Wavelength Calibration 31 Calibrating the Spectrometer 31 Preparing for Calibration 31 Calibrating the Wavelength of the Spectrometer 32 Saving...

Страница 5: ...ftware simply reads these values from the spectrometer a feature that enables hot swapping of spectrometers among PCs The HR2000 Spectrometer connects to a notebook or desktop PC via USB port or seria...

Страница 6: ...or the handheld PC Sampling System Overview Ocean Optics fiber optic spectrometer systems consist of low cost modular data acquisition components A typical HR2000 based sampling system contains four c...

Страница 7: ...l port on handheld PC comes with 5 VDC power supply required when connecting to serial port Shipment Components The following information and documentation ships with the HR2000 Spectrometer Packing L...

Страница 8: ...detailed instructions for the OOIBase32 Spectrometer Operating Software at http www oceanoptics com technical operatinginstructions asp Note You can find instructions for the OOIPS2000 Operating Softw...

Страница 9: ...ion How the HR2000 Works Below is a diagram of how light moves through the optical bench of an HR2000 Spectrometer The optical bench has no moving parts that can wear or break all the components are f...

Страница 10: ...l bench towards the Grating of the spectrometer Light enters the spectrometer passes through the SMA Connector Slit and Filter and then reflects off the Collimating Mirror onto the Grating 5 Grating T...

Страница 11: ...ht 570 g Power consumption 90 mA 5 VDC Detector range 200 1100 nm Gratings 13 gratings available Entrance aperture 5 10 25 50 100 or 200 m wide slits or fiber no slit Order sorting filters Installed l...

Страница 12: ...ndows 98 ME 2000 XP operating system when connecting the HR2000 to a PC via USB port or Any 32 bit version of Windows when connecting the HR2000 to a PC via serial port Compatibility for Handheld PCs...

Страница 13: ...5Vin 2 RS232 Tx 3 RS232 Rx 4 Lamp Enable 5 Continuous Strobe 6 Ground 7 External Trigger In 8 Single Strobe 9 I 2 C SCL 10 I 2 C SDA 11 No connect 12 No connect 13 No connect 14 No connect 15 No conn...

Страница 14: ...ngular end of the cable into the USB port of the PC If you installed OOIBase32 prior to connecting the HR2000 the Add New Hardware Wizard appears and installs the HR2000 drivers If the drivers do not...

Страница 15: ...le The Default Spectrometer Configuration File screen prompts you to select a spectrometer configuration SPEC file for use with the HR2000 The unique serial number of the HR2000 precedes the file exte...

Страница 16: ...Serial Port drop down menu Consult Chapter 4 Troubleshooting for information on identifying serial ports 4 Select the speed at which the HR2000 will operate from the SAD500 Baud Rate drop down menu 1...

Страница 17: ...e Configure Hardware dialog box OOIBase32 stores this information for future use once you close the program Note For information on using the HR2000 with the OOIPS2000 Operating Software for the handh...

Страница 18: ...to obtain the Correcting Device Driver Issues document from the Ocean Optics website Visit the following web address http www oceanoptics com technical engineering correctingdevicedriverissues pdf Re...

Страница 19: ...e INF directory is not visible you will need to disable the Hide System Files and Folders option on in Windows Folder Options Note If the INF directory is not visible you will need to disable the Hide...

Страница 20: ...disable the Hide System Files and Folders and Hide File Extensions for Known File Types options in Windows Folder Options You can access Windows Folder Options from Windows Explorer under the Tools F...

Страница 21: ...ears next to the HR2000 s COM port 4 Verify that the COM port to which the HR2000 is interfaced is active If the ports on the PC are not labeled and you do not know the COM port number use trial and e...

Страница 22: ...uisition parameters using the Acquisition Parameters dialog bar or select Spectrum Configure Data Acquisition from the menu If you have followed the previous steps and started OOIBase32 the spectromet...

Страница 23: ...level on scale in scope mode by Decreasing the integration time Attenuating the light going into the spectrometer Using a smaller diameter fiber Using a neutral density filter with the correct optical...

Страница 24: ...ht interacts with the sample The output fiber carries light from the sample to the spectrometer top center which is connected to the PC far left Absorbance is also proportional to the concentration of...

Страница 25: ...is command merely stores a dark spectrum in memory You must select File Save Dark from the menu to permanently save the spectrum to disk Note If possible do not turn off the light source when taking a...

Страница 26: ...mission setup The light source far right sends light via the input leg of a transmission probe into a container bottom center The light interacts with the sample The output leg of the transmission pro...

Страница 27: ...m Store Dark from the menu bar This command merely stores a dark spectrum in memory You must select File Save Dark from the menu to permanently save the spectrum to disk Note If possible do not turn o...

Страница 28: ...ssed as a percentage R relative to the reflection from a standard reference substance S D R R D x 100 where S is the sample intensity at wavelength D is the dark intensity at wavelength R is the refer...

Страница 29: ...spectrum by clicking the Store Dark Spectrum icon on the toolbar or by selecting Spectrum Store Dark from the menu bar This command merely stores a dark spectrum in memory You must select File Save Da...

Страница 30: ...length Figure 6 4 Typical Relative Irradiance Setup A light source with a known color temperature such as the LS 1 or LS 1 LL lower right is used to take a reference spectrum The light to measure lowe...

Страница 31: ...ave Reference from the menu bar to permanently save the spectrum to disk 5 Block the light path to the spectrometer Then take a dark spectrum by clicking the Store Dark Spectrum icon on the toolbar or...

Страница 32: ...below Configuring the Time Acquisition Channel Configuration Screen 1 Perform the following steps on the Time Acquisition Channel Configuration screen a Select Enabled to set the time acquisition calc...

Страница 33: ...Configure Acquisition Screen section below Configuring the Time Acquisition Configuration Screen 1 Select Time Acquisition Configure Configure Acquisition from the menu bar to open the Time Acquisiti...

Страница 34: ...ay to set the delay preceding the time acquisition process Keep in mind that the delay countdown does not begin until you start the time acquisition process Be sure to select Hours Minutes Seconds or...

Страница 35: ...e first coefficient nm pixel C2 is the second coefficient nm pixel2 and C3 is the third coefficient nm pixel3 You will be calculating the value for I and the three Cs Calibrating the Spectrometer Prep...

Страница 36: ...l number In the third column calculate the pixel number squared and in the fourth column calculate the pixel number cubed True Wavelength nm Pixel Pixel 2 Pixel 3 Predicted Wavelength Difference 253 6...

Страница 37: ...ression Statistics Multiple R 0 999999831 R Square 0 999999663 Adjusted R Square 0 999999607 Standard Error 0 125540214 Observations 22 Intercept Coefficients Standard Error Intercept 190 473993 0 369...

Страница 38: ...ept the default installation location or click the Browse button to specify a directory Then click the Next button The Program Manager Group screen appears 7 Click the Next button The Start Installati...

Страница 39: ...he serial mode To Save Wavelength Calibration Coefficients Using the Serial Mode 1 Open the OOIBase32 application 2 Select Spectrometer Configure from the OOIBase32 menu bar The Configure Spectrometer...

Страница 40: ...new OFLV 200 1000 variable order sorting filter to eliminate second and third order effects HR2000CG UV NIR Specifications Dimensions 148 6 mm x 104 8 mm x 45 1 mm Weight 570 g Power consumption 90 mA...

Страница 41: ...Specifications 5 7 HR2000CG UV NIR 36 Features 36 I Installation 10 Installed Filter 6 Interface 3 Introduction 1 L L2 Detector Collection Lens 6 Lens 6 M memory chip 2 Mirror 6 O OOIBase32 11 Options...

Страница 42: ...W Wavelength Calibration 31 Wavelength Calibration Data File 3 Wavelength Calibration Data Sheet 3 HR2000 High Resolution Fiber Optic Spectrometer 38...

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