Support - Spectrometers
On this page, we provide some hints and advice for making the best out of our products. Please feel free to contact us for comments and recommendations.
| Hardware check
| Please check hardware first with AdminTool software
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| We offer a special preamplifier board for the MMS module series. This allows you to read out the spectrometer module faster and at lower noise. Please contact tec5USA for retrofitting.
| DZA-MMS-1M |
| Calibration Coefficients
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Can be saved to the Front End Electronics by means of AdminTool, tec5 uses C' coefficient set given on the Ziess protocol
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| Illumination |
- Make sure the whole SMA input of a module is illuminated. Most Zeiss spectrometer modules include an optical cross-section converter (fiber bundle) as optical input. If only few fibers see light then wavelength inaccuracies may occur.
- As a consequence of such a fiber bundle input carefully adjust (by rotation) any other fiber bundle as a light delivering device to the spectrometer module.
- If input NA is reduced by illumination, artifacts origination by the second order blocking filter may occur - which are stable as long as NA does not change
- If NA is too small it affects also the wavelength resolution for only a small part of the grating is illuminated. For decent resolution, however, a sufficient number of grating lines has to be illuminated to create the nice interference pattern required for a high-resolving spectrum.
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| Cables
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- Keep cable length as short as possible
- Apply shielding if cables are longer than 50cm
- USB cables do not exceed 5m by specification
- The longest successfully tested PCI cable is 8m
- Ethernet connections are almost limitless in length
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| Grounding |
- Very important for a proper video signal
- MMS: Use metal tounge of housing for imporved shielding
- Ground shielding cables on one side only
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| Integration Times |
- Shortest integration time is the readout time (except for InGaAs arrays)
- Shortest integration time for InGaAs arrays is 0.1ms
- Longest integration time is 6.5s standard
- Longest integration time can be extended to up to about 9 minutes, please see SDK manuals for details
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| Non-Linearity |
All detectors show non-linearities. This can be corrected by software since this is typicalyl a stable feature of a sensor. The MultiSpec Pro software features this correction.
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| Temperature Control
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Make sure heat is dissipated from a cooled sensor. Please note that the maximum temperature which can be bridged is less than 50°C. Provide a good airflow and good heat conductivity.
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