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MNL-1007 REV A

  

30 

Troubleshooting 

 
If your questions are not answered in this section, please contact us at 

www.OceanInsight.com

. 

  

System Performance 

Symptom

 

Possible Cause 

Corrective Actions 

Noise is at a high 
level 

Insufficient optical power 
is coupled into the 
system 

Make sure that the optical power is within the recommended range and make 
sure that all the components of the sampling setup are well positioned and intact. 

Optical gain settings are 
not well optimized 

Make sure that you are using the correct optical gain settings and create new 
optical gain settings with your setup if you have not already done so. 

System is stabilizing 

Make sure you have waited enough time for your light source to stabilize and 
more than 15 minutes for the NanoQuest module to stabilize. 

The wavelength 
accuracy has 
declined 

The module is operating 
outside the specified 
operating range 

Make sure that the ambient temperature does not exceed 40 

o

C or go below -5 

o

C.  

Aging effect if operating 
in harsh environments 

Perform wavelength calibration routines. 

The baseline of 
the spectrum is 
shifted above or 
below 100% 

Optical gain settings are 
not well optimized 

Make sure that you are using the correct optical gain settings and create new 
optical gain settings with your setup if you have not already done so. 

Measurements are taken 
during the warm-up time 
of the light source 

Make sure that measurements are taken after the stabilization of the light source. 
You may need to refer to the datasheet of the light source to know the typical 
warm-up time. If measurements are to be taken during the warm-up time, 
frequent background measurements are required. 

Summary of Contents for NANOQ-2.5

Page 1: ...NanoQuest MEMS Based FT IR Sensor Installation and Operation Manual For Product NANOQ 2 5...

Page 2: ......

Page 3: ...or transmitted by any means electronic mechanical photocopying recording or otherwise without written permission from Ocean Insight This manual is sold as part of an order and subject to the conditio...

Page 4: ...other consumable goods Caution Do not use if device is dropped and or damaged Have an authorized service representative check the device before using again Caution Be sure to install any software BEFO...

Page 5: ...to connect the fiber do not apply excessive force to the optical connector Excessive force may damage the connector and will affect measurement results Warranty For the most current warranty informati...

Page 6: ...ipment The WEEE symbol on the product indicates that the product must not be disposed of with normal household waste Instead such marked waste equipment must be disposed of by arranging to return to a...

Page 7: ...input light in the NIR wavelength range from 1350 2500 nm 7400 4000 cm 1 The input light is either transmitted through a sample material or reflected from it using external sampling accessories Post...

Page 8: ...o two paths one of the beams is reflected by a moving mirror and the other is used as a reference when reflected by a fixed mirror The moving mirror controls the Optical Path Difference OPD between th...

Page 9: ...eally before each sample measurement This ensures the most accurate results from the device Transmission Measurements The background measurement Io is obtained by measuring the spectrum of the transmi...

Page 10: ...eceptacle USB connector for the interface with other devices The USB connector is also used to supply NanoQuest with its required power for operation System Requirements Parameter Requirements Operati...

Page 11: ...C Warm up Upon connecting the NanoQuest to the PC via USB the system takes 15 to 20 minutes to become thermally stabilized The module is operational during warm up However repetitive measurements of t...

Page 12: ...MNL 1007 REV A 10 Mechanical Drawing...

Page 13: ...so the dependencies between the different performance parameters are governed by the same relationships as conventional FT IR systems Scan time and resolution are two parameters than can be set with...

Page 14: ...ent detected by the photodetector to a digital signal NanoQuest has two main gain settings Transmission optimum gain setting corresponding to the coupled power in a typical transmission setup Reflecti...

Page 15: ...rometers consist of intensity values at equally spaced intervals The discrete nature of the data makes it highly unlikely that the maximum absorption of any band will correspond exactly with one of th...

Page 16: ...erence Material the user can use a standard reference material to correct wavenumber drifts in NanoQuest The user enters the reference absorption peak positions that correspond to the selected resolut...

Page 17: ...then click Next 8 When the wizard is ready to install click Install to proceed 9 The installation wizard will detect if the appropriate JRE Version is already installed on the computer a If it exists...

Page 18: ...setting selected in the dropdown menu Run Mode i Single Display the data for a single measurement at the specified scan time ii Cont Take continuous consecutive measurements at the specified scan time...

Page 19: ...ved data in Spectrum InterPSD or Interferogram formats Clear Clears all displayed data sets in the display area Capture Useful only in continuous run mode Keeps the last plotted graph so it is not rep...

Page 20: ...st Wavelength Wavenumber Correction Opens a wizard that allows correction of wavelength wavenumber errors caused by long term drift Burn Settings Opens a wizard that enables burning the advanced setti...

Page 21: ...M Optical Gain Setting Select Transmission or a user created custom gain setting Run Mode Choose Single or Cont to set spectral acquisition to stop after a single acquisition or to acquire data contin...

Page 22: ...the screen or click Stop to stop acquisition of new spectra 4 Post measurement actions Save plotted data all plots in the Spectrum display will be saved Load previously saved spectra Plots are saved...

Page 23: ...nt is not to have a high SNR in this step o Resolution Select either 8 or 16 nm optical resolution FWHM o Optical gain settings Select Reflection or a user created custom gain setting o Run Mode Conti...

Page 24: ...tical distance between the probe and reference standard o Optional Capture the plots and save them for future reference Click Stop 3 Set measurement parameters Go to the Spectrum tab Scan Time Set the...

Page 25: ...nt face of the probe and click the Run button o If operating in single mode wait until the data is displayed o If operating in continuous mode the software will operate consecutive measurements and wi...

Page 26: ...l gain settings 1 Click on Add Optical Gain Settings button to open the wizard 2 In the wizard type the name of the optical gain you would like to add in the Setup Name field 3 Click on Proceed button...

Page 27: ...he Optical Gain Settings drop down list 2 Click on the red x next to the drop down list 3 A confirmation message will popup click on the Yes button to proceed NOTE If you connect the NanoQuestinuse to...

Page 28: ...on Applying self correction 1 Click on the Wavelength Wavenumber Correction button to open the wizard 2 Select the Self Correction radio button and click on the Proceed button 3 A window will pop up a...

Page 29: ...from the drop down list 4 Click on the Proceed button 5 A window will pop up asking you to connect the light source to the module Connect the light source with no sample in the light path and click O...

Page 30: ...own menu Burning Settings into the NanoQuest The gain settings and wavelength correction will not be transported with the NanoQuest to another computer unless the new settings are burned into the Nano...

Page 31: ...ding points The selection of the apodization and zero padding options can be performed before or after the measurement by selecting these options from the drop down menus Select the Apodization option...

Page 32: ...e than 15 minutes for the NanoQuest module to stabilize The wavelength accuracy has declined The module is operating outside the specified operating range Make sure that the ambient temperature does n...

Page 33: ...n taken during the warm up time of the module Make sure that measurements are taken 15 20 minutes after connecting the module to the host If the measurements are to be taken during the warm up time fr...

Page 34: ...Spectral Region Spectroscopy online 2007 4 E W C Donal A Burns Handbook of Near Infrared Analysis CRC Press 2008 5 E 1944 Standard Practice for Describing and Measuring Performance of Laboratory Fouri...

Page 35: ...h Resolution 8 or 16 nm 1 55 m FWHM criterion SNR 3000 1 2 100 nm 0 5 s scan time Tx Resolution 16 nm 1000 1 2 100 nm 2 s scan time Rx Resolution 16 nm Wavelength Accuracy 1 5 nm 1 4 m Temperature 40...

Page 36: ...MNL 1007 REV A 34 Questions Chat with us at OceanInsight com info oceaninsight com US 1 727 733 2447 EUROPE 31 26 3190500 ASIA 86 21 6295 6600...

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