spectral range into the NIR (to 1900 nm and 2500nm, respectively). The PSR-3xxx
models use two InGaAs arrays: a 256-element array covering 1000–1900nm and
another array (256-elements for the PSR+3500, 128 elements for the PSR-3000) that
extend from 1900–2500 with finer spectral resolution.
2.1.2 Battery Pack
All PSR Series spectroradiometers require the use of a Li-Ion battery pack for
providing power. Two of these battery packs are supplied with each system. The Li-Ion
battery runs at a nominal 7.4V and is designed to provide more than 3 hours operation
following a full charge. When the battery is inserted in the recess in the front panel,
power can be applied to the PSR Series instrument. When the battery voltage falls too
low to power the instrument, it will turn off and go to 0 volts. Remove the battery from
the instrument for recharging with the supplied charger. Refer to Section 6: Battery
Charger for charging details.
IMPORTANT! DO NOT ATTEMPT TO CHARGE THE BATTERY WHILE IT IS
INSERTED IN THE INSTRUMENT!
2.1.3 Optical Input (Foreoptic)
The PSR+3500 comes with a 4° nominal FOV lens foreoptic. The lens screws into the
unit and is easily removed. Additional lenses with different fields of view are available as
options. Also, a keyed fiber optic cable with matching adapter may be included with your
instrument, as well as additional fiber accessories such as contact probes and leaf clips.
See Section 5, Changing Foreoptic Accessories for the proper procedure for
changing the optical accessories.
For the appropriate accessories (e.g. lenses), the entire spectrometer/foreoptic system
is factory-calibrated for radiance using a NIST-traceable source. The calibration
coefficients are stored in flash memory by the internal microprocessor. The application
software retrieves these coefficients and applies them to acquired scan sample data to
convert to radiometric units.
IMPORTANT
1. When optics are changed, it is up to the user to select the proper calibration preset for
that specific foreoptic, either from the control panel for standalone scans or, when using
DARWin SP software for real-time data collection, from the Foreoptic pull-down menu
on the scan toolbar. In both cases the available presets will be intuitive, such as
“LENS4” for the 4° lens, “FIBER” for the bare fiber optic, etc.
To Next Page
Loading...