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  • FieldSpec HandHeld2
Sep 2010
ASD Inc.Request Info
BOULDER, Colo., Sept. 16, 2010 — ASD Inc.’s FieldSpec HandHeld2 portable spectroradiometer for scientific and field spectroscopy applications is being used for crops and soil research; forestry, ecology, and plant physiology research; and oceanography and inland water bodies research.

The compact remote sensing device uses near-infrared spectroscopy to make noncontact, fast, nondestructive, laboratory-grade materials measurements material measurements. Self-contained data collection with 2000 spectrum file storage capacity and an onboard tiltable color LCD and data collection facilitate more efficient field work by eliminating the need to be continuously connected to a computer.

Other enhancements include ergonomically designed controls, laser targeting, standard AA battery power and a rugged enclosure to ensure durability and easy transport.

Using proprietary technology, the device produces high-signal-to-noise-ratio spectra in <1 s via a high-sensitivity detector array, a low stray light grating, a built-in shutter and second-order filtering. It provides accurate and quickly derived reflectance, radiance and irradiance spectra.

Features include a wavelength range of 325 to 1075 nm, accuracy of ±1 nm, <3-nm resolution at 700 nm, minimum selectable integration time of 8.5 ms, a standard 25° field-of-view, proprietary DriftLock compensation for dark current, and fast scan times. The unit weighs <1.36 kg with batteries, measures 215 × 140 × 90 mm, and uses four rechargeable or standard AA batteries.

It is supplied with a Pelican case that meets FAA requirements for carry-on baggage, a Spectralon white panel, four rechargeable batteries, a battery charger, an AC/DC power supply, a USB cable and memory stick, and a D-handle.

Operating temperature ranges from 0 to 40 °C.


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1. In raster scan television, one of the two scans that are interlaced to make up a frame. 2. See field of view.
Radiant flux incident per unit area of a surface. Also called radiant flux density.
Radiant power per unit source area per unit solid angle. Usually it is expressed in watts/m2/steradian.
The ratio of reflected flux to incident flux. Unless otherwise specified, the total reflectance is meant; it is sometimes convenient to divide this into the sum of the specular and the diffuse reflectance.
remote sensing
Technique that utilizes electromagnetic energy to detect and quantify information about an object that is not in contact with the sensing apparatus.
An instrument for measuring the radiant energy from a source at each wavelength throughout the spectrum. The spectral regions are separated either by calibrated filters or by a calibrated monochromator. The detector is an energy receiver such as a thermocouple or photomultiplier.
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