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GoyaLab SAS

- [email protected] -

www.goyalab.com

Institut d’optique d’Aquitaine, rue François Mitterrand

- 33400 Talence

–

France

Version June 20

Handheld modular spectrometer

Introduction:

This document describes the IndiGo modular spectrometer and provides you with instructions for its
correct operation. Please do not hesitate to contact us through [email protected] if you have any
questions about this manual.

The IndiGo consists of a modular spectrometer connected by Bluetooth to a smartphone working in
the visible range. Optional modules are available on demand and allow the user to add either a light
source, an optical fiber adapter or a chemical analyzer to the main spectrometer unit. The IndiGo is
designed to be easy to use, compact and portable.

The IndiGo is ideal to record visible spectra directly in the field.

Operation:

Package content

-

The IndiGo core module

-

USB-C power cord 1m long

-

Protective case

Carefully inspect the devices and make sure there is no damage. In the event of a damage, do not use
the device and please contact us at [email protected]

IndiGo

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Содержание IndiGo

Страница 1: ...odular spectrometer connected by Bluetooth to a smartphone working in the visible range Optional modules are available on demand and allow the user to add either a light source an optical fiber adapter or a chemical analyzer to the main spectrometer unit The IndiGo is designed to be easy to use compact and portable The IndiGo is ideal to record visible spectra directly in the field Operation Packa...

Страница 2: ... connector 2 Once the power charge LED 4 is green the IndiGo is ready to be used Note if the IndiGo is off all the LEDs will be off even if the IndiGo is in charge mode To turn on the LED during the charge mode battery please turn on the switch 1 Then you will need to download the GoyaLab mobile app on the Google Play Store The iOS version will be available soon Maintenance After each use the Indi...

Страница 3: ... detection of the IndiGo Wait a few seconds until your IndiGo appears on the screen Then select IndiGo_xx While IndiGo is connected to the smartphone the BLE connection LED 3 flashes red and orange When the LED became orange the IndiGo is connected to the smartphone and is ready to be used MEASURE menu Once the smartphone and the IndiGo are paired the app launches the MEASURE menu Basic spectrum f...

Страница 4: ...calibrated in wavelength Basic spectrum functions of the app The different functionalities of the MEASURE menu are available from the buttons on the upper right corner Save graph Save graph saves the spectrum displayed on the screen All spectra are saved in txt format The files are saved in a specific folder PC Smartphone xx Shared internal storage space Android data com minkagency goyalab files T...

Страница 5: ...function is only available when the app is in absolute mode see 5 2 f Smooth Smooth allows to average the intensity values of the spectrum over N values The value of N can be set in the application settings menu Autoscale Autoscale scales the spectrum on the vertical axis so that it fills the whole window With smooth function Without smooth function ...

Страница 6: ...eline Baseline allows to subtract the baseline from the spectrum Cursor and Findpeak Cursor position displays a red cross on the screen that indicates to the user the wavelength of the targeted point and the associated intensity The cursor can be moved either by using the arrow buttons by increments of 1nm or directly by taping on the screen ...

Страница 7: ...ys information about the Bluetooth communication parameters and the charge level of the battery Measure Allows the user to measure spectra Analyze Allows the user to display and analyze saved graphs Note All he functionalities of this menu are detailed in Section 5 2 Tutorial Starts the pairing between the IndiGo and the app and helps you getting started Settings gives the possibility to the user ...

Страница 8: ...m and by selecting display files Once done a new window like the MEASURE menu is opened with all the selected files Like with the MEASURE menu some functionalities are available to rescale the axes subtract a baseline or display a cursor to read the coordinate of a peak Note when more than 2 graphs are displayed at the same time the cursor will be placed on the first graph by default To change the...

Страница 9: ...lar marked with a icon On the contrary if at least one of the coefficients is less than the threshold the curves are considered different icon Note The Coefficient I will mainly focus the comparison of the curve shapes The variation of the intensity will not impact the similarity The coefficient D will also take into account the intensity difference between both curves c Set as a background This f...

Страница 10: ...uttons SETTINGS menu The different functionalities of the SETTINGS menu are described hereafter a AutoExposure The Acquisition time corresponds to the recording time of a spectrum It can be managed automatically by the app or imposed by the user When the switch is on Auto the exposure time is managed automatically by the app When the switch is on Manual the exposure time will be the one indicated ...

Страница 11: ...t the minimum and the maximum values Note When the wavelength scale is in manual mode the functionalities of the app Autoscale baseline and Findpeak will be effective in this wavelength range c Graph color Two display modes for the live spectrum are available A monochrom curve rainbow curve d Screen background The wallpaper of the MEASURE menu can be displayed either in black or white The black ba...

Страница 12: ...ed in relative mode where the intensity is expressed as a percentage of the intensity received compared to a reference spectrum To activate this functionality the following steps must be followed Activate the relative modes in settings Go back to the MEASURE menu Point the IndiGo in the direction of the reference light source When the spectrum fulfils your requirement go in the functionalities of ...

Страница 13: ...irect exposure to your skin and eyes when the UV LEDs are emitting Installation Before installing the UV module switch off the IndiGo to avoid electrical damage and connection issues Then place the 10 metal pins in front of the 10 holes on the front face of the IndiGo Use two M3x10 screws supplied with the module to fix the UV module You can now switch on the IndiGo and take measurements How it wo...

Страница 14: ...c e and f at 375nm Use the UV module Switch on the IndiGo and follow the guidelines described in Section 3 to connect the device to the smartphone and start spectra acquisition Once on the measurement page stop the live mode by taping on the live button From now on use button 1 or 2 depending on your needs of the UV module to activate the LEDs and acquire a spectrum When the acquisition is over th...

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