CalibraSpec 6500A
Spectral Evolution – NIR
Ultimate Stability and Spectral Resolution
The CalibraSpec 6500A spectroradiometer from Spectral Evolution delivers unmatched accuracy in a portable design. It provides exceptional spectral resolution, making it ideal for applications that require precise identification of spectral features.
Equipped with fully thermoelectrically cooled photodiode arrays, the CalibraSpec 6500A is engineered for reliable accuracy, stability, and repeatable measurements.
Available Accessory:

Specifications
Spectral Range | 350-2500nm |
Spectral Resolution | 1.5nm @ 700nm 3nm @ 1500nm 3.8nm @ 2100nm |
Sampling Bandwidth (nm) | Data output in 1nm increments; 2151 channels reported |
Spectrometer Type | 3 Diffraction Gratings |
Detector(s) | 1024-element UV-enhanced TE-cooled Si Array 512-element TE-cooled InGaAs array 512-element TE-cooled extended InGaAs array |
Calibration | Factory calibrated for radiance and/or irradiance using NIST traceable source (depending upon optics selection) |
Noise Equivalence Radiance W/cm2/nm/sr (1.2m fiber optic) | 0.4×10-9 @ 400nm 0.2×10-9 @ 1500nm 2.0×10-9 @ 2100nm |
Stray Light | ≤0.1%; VNIR: <0.03%; SWIR<0.02% |
Software Included | DARWin™ SP Data Acquisition |
Power | 12V, 33W |
Dimensions | 12.4″x 8.7″x 4.4″ |
Weight | 12.64 lbs |
Interface | USB, Wireless Connection |
Integration Time | 1 – 1000 ms |
Match Radiance | VNIR: 10 x Solar; SWIR: 2 x Solar |
Wavelength Reproducibility (nm) | 0.1 |
Wavelength Accuracy (nm) | 0.5 |
Automatic Exposure | ✅ |
Shutter for Dark Scans | ✅ |
TTL & Phototriggering for pulsed measurement | No |
Key Applications for CalibraSpec 6500A
- • Mineral unmixing
• Soil identification
• Vegetation studies
• Materials identification
• Microbial diversity research
Speak to PAS for expert guidance about the Spectral Evolution CalibraSpec 6500A.
CalibraSpec 6500A Features:
- Maintains drift stability of 0.1% for highly accurate long-term measurements of integrating spheres and light sources.
- Built-in temperature controller keeps the instrument housing stable, reducing warm-up time.
- All detector temperatures are displayed in DARWin™ SP software for real-time monitoring.
- Automatic detector integration and dark current correction ensure an exceptional signal-to-noise ratio.
- High-transmission fiber optic cables are radiometrically calibrated to NIST standards.
- Optional radiometrically calibrated accessories, including lenses and cosine receptors, are available.