Spectral Evolution SR-6500, Ultra High Resolution Spectroradiometer


Spectral Evolution


The SR-6500 NIR spectroradiometer covers the UV/VIS/NIR range from 350-2500 nanometers. It features ultra high resolution and very stable performance with three high density thermoelectrically cooled photodiode arrays.

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Spectral Range: 350-2500nm

The SR-6500 is also calibrated to NIST-traceable radiometric calibration standards.

Resolution at FWHM for the SR6500 is:
1.5nm @ 700nm
3.0nm @ 1500nm
3.8nm @ 2100nm

Resolution is achieved using three high density solid state thermoelectrically cooled photodiode arrays:
1024 element TE-cooled silicon phtotodiode array detector (VIS-NIR)
512 element TE-cooled InGaAs photodiode array detector (SWIR 1)
512 element TE-cooled extended InGaAs photodiode array detector (SWIR 2)

SR-6500 Technical Specifications Spectral range 350-2500nm

Photodiode Arrays:

  -1024 element TE-cooled silicon detector (VIS-NIR)

  -512 element TE-cooled InGaAs detector (SWIR 1)

  -512 element TE-cooled extended InGaAs detector (SWIR 2)

All dispersive optics fixed in place– no moving parts Auto dark current shutter & auto-exposure control Fixed metal clad fiber optic cable with SMA-905 input

   (User removable fiber/4 bolts for easy field replacement)

Wireless Bluetooth and USB interfaces Comes complete with DARWin SP Data Acquisition Software

   (Windows XP/Vista/System 7/8/10 compatible)

Minimum scan speed: 100milliseconds

Spectral resolution

  -1.5nm @ 700nm

  -3.0nm @ 1500nm

  -3.8nm @ 2100nm

Noise Equivalence Radiance (with 1.5 meter fiber optic)

  -1.0x10-9 W/cm2 /nm/sr @ 400nm

  -2.8x10-9 W/cm2 /nm/sr @ 1500nm

  -6.8x10-9 W/cm2 /nm/sr @ 2100nm

Auto-dark current measurement



  -12.4 x 8.7 x 4.4 inches (31.5 x 22.9 x 38.7 cm)


  -11 lbs.(4.99 kg)

Operating range : 0-40°C

Communications: Wireless Bluetooth and USB

Instrument Power (Max): 33W

The SR-6500 portable spectroradiometer provides the ultimate in high resolution measurement for applications where the ability to see and save additional information about absorbance and reflectance features is critical.

The SR-6500 is a full range UV/VIS/NIR specrtroradiometer covering the

350-2500nm spectral range. It is designed with three thermoelectrically cooled photodiode arrays for the ultimate in stable performance.

The photodiode arrays are:
1024 element TE-cooled silicon detector array covering wavelengths from 350 to 1000nm

512 element TE-cooled InGaAs detector array covering wavelengths from 1000 to 1630nm
512 element TE-cooled extended InGaAs detector array covering wavelengths from 1630 to 2500nm.

The SR-6500 delivers very high resolution for accurate and precise spectra. Resolution is:
1.5nm @ 700nm
3.0nm @ 1500nm
3.8nm @ 2100nm

The spectroradiometer can be used with bare fiber or FOV (field-of-view) fiber-attached lenses and a high-power light source, or with our convenient handheld Miniprobe, a sample contact probe with a built-in light source and 3mm spot size.

With the Miniprobe, the SR-6500 is well-suited for capturing high resolution scans of minerals in samples from mining exploration. These scans will show additional features not seen with standard field spectrometers or spectroradiometers allowing for better identifications and analysis of the minerals in the sample and affording a geologist an impressive tool for unmixing minerals in samples.

When used with Spectral Evolution’s EZ-ID mineral identification software and two spectral libraries of more than 600 minerals, the SR-6500 offers new insight into mineral alteration and vectors to ore bodies.

The SR-6500 includes our DARWin SP Data Acquisition software for instrument control and data acquisition and saves all files as ASCII for easy use with other analysis software.

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