WALRUS Hyperspectral Radiometer Buoy

Mechanical	Diameter: 23 cm (9.0") Length: Varies depending on configuration. 150 to 250 cm (59 - 98") Weight in air: Varies depending on configuration. 25 to 34 kg (55 to 75 lbs)
Optical	Calibrated wavelength range: either 350nm to 850nm or 400 to 1000 nm (see spectrometer options) Spectral bandwidth: 2.4 nm (0.4nm pixel resolution)  Fiber Optics: Quartz, sealed in thick 316SS spars.
Electrical	Internal rechargeable batteries provide up to 18 hours of continuous operation Optional external power supply:  9V to 15V, 350 mA max (4 spectrometers) 8-pin connector assignments:   Pin 1: Supply voltage (9 to 15 VDC) Pin 2: common Pin 3: RS232 Instrument receive Pin 4: RS232 Instrument transmit Pin 5: Battery charging input (18 to 24 VDC) Pin 6: RS232 receive from Slave (N/C with compass installed) Pin 7: RS232 transmit to Slave (N/C with compass installed) Pin 8: Battery disable
Environmental	Operating Temperature: 0 to 35 C
Data Logging	Nonvolatile storage of more that 30,000 full spectra, or over 1 million sampled spectra. Calibration can be applied to data by the WALRUS, or externally on PC Variable, programmable sampling rates Variable integration time: 20ms to 30 seconds per sample Sampling controlled by real-time clock or manual switch