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USB2000+RAD Spectroradiometer
for Irradiance Measurements

The USB2000+RAD Spectroradiometer is a preconfigured combination of a powerful 2-MHz analog-to-digital (A/D) converter, programmable electronics, a 2048-element CCD-array detector, a high-speed USB 2.0 port, and cosine corrector. This innovative combination produces our fastest spectrometer yet and provides resolution to 0.35 nm (FWHM). The USB2000+RAD allows users to capture and store a full spectrum into memory every millisecond (that's 1,000 full spectra every second) when the spectrometer is interfaced to a computer via a USB 2.0 port. The USB2000+RAD is perfect for chemical, biochemical and other applications where fast reactions need to be monitored.

This spectroradiometer system features a USB2000+ Spectrometer and attached CC-3-DA cosine corrector that does not require in-field NIST-traceable UV/VIS/calibration since it has been precalibrated by Ocean Optics with our SPEC-CAL-UV radiometric calibration service for UV spectrometers. The USB2000+RAD is preconfigured and is ready for measurement “out of the box” so that installation and measurement is fast, accurate and convenient.

The USB2000+RAD offers the following features:

1,000 Full Spectra/Second
Programmable Microcontroller
Modular design
User-configured wavelength range and resolution
Automatically reads the wavelength calibration coefficients of the spectrometer and configures operating software
USB-to-PC interface; no external power requirements
RoHS and CE compliance

1,000 Full Spectra/Second

The USB2000+RAD utilizes an onboard, 2-MHz A/D converter, which allows you to capture and transfer one full spectrum into memory every millisecond when the spectrometer is interfaced to a PC via the USB port.

Programmable Microcontroller

The USB2000+RAD has an onboard programmable microcontroller that provides flexibility in controlling the spectrometer and accessories. Through a 20-pin connector, you can implement all operating parameters in the software, such as controlling external light sources, creating processes and routines and retrieving data from external devices. The USB2000+RAD gives you access to 10 user-programmable digital I/Os for interfacing to other equipment; one analog input and one analog output; and a pulse generator for triggering other devices. (Programming the I/Os requires SpectraSuite Spectroscopy Operating Software.)

Facilitated Operation

Setting up the USB2000+RAD Spectrometer is easy. The user simply installs our Spectrometer Operating Software and then connects the USB cable from the spectrometer to the computer. Wavelength calibration coefficients unique to each spectrometer are programmed into a memory chip right on the USB2000+; the software simply reads these values from the spectrometer. What's more, the USB2000+RAD requires no external power supply; it draws its power from the computer. In fact, the USB port can be used to power light sources that connect to the spectrometer.

Optimal Performance

The USB2000+RAD couples a low-cost, high-performance 2048-element linear CCD-array detector with an optical bench that's small enough to fit into the palm of your hand -- the same detector and optical bench that have provided superior performance to the users of our 90,000+ systems out in the field. The USB2000+RAD also works the same way as other Ocean Optics spectrometers in that it accepts light energy transmitted through single-strand optical fiber and disperses it via a fixed grating across the linear CCD array detector, which is responsive from 200-1100 nm.

USB2000+RAD Configuration

The USB200+RAD is preconfigured with the following, along with an CC3-DA cosine corrector, SpectraSuite spectrometer operating software, SPEC-CAL-UV radiometric calibration service, and our Annual Service Package (ASP) to extend the warranty from 1 year to 2 years:

Equipment	Details
Spectrometer	USB2000+
Grating	2
Detector	DET2B-200-850
Slit	SLIT-25
Collection Lens	L2

Pricing

Item	Description	Price
USB2000+	USB2000+RAD preconfigured spectroradiometer. Includes CC3-DA, SPEC-CAL-UV, SpectraSuite and an ASP.	$4678

Serial Port Option

The USB2000+RAD also has an RS-232 serial port for interfacing to PCs and PLCs. Serial port use requires an external power supply and 9-pin serial cable (USB-ADP-PC).

Cable and Power Supply Options

Cable	Description	Price
USB-CBL-1	Cable connects from USB port on USB2000+RAD to USB port on desktop or notebook PC	$27
USB-ADP-PC	Cable and adapter block connect from serial port on USB2000 to serial port on desktop or notebook PC; also comes with USB-CBL-PS 5 VDC power supply	$104
CBL-SER	Spare 9-pin serial cable; connects to USB-ADP-H and serial port on desktop or notebook PC	$47
USB-CBL-PS	Spare 5 VDD power supply; required if USB2000 interfaces to PC via serial port	$27
USB-ADP-H	Adapter block to use with CBL-SER to connect from serial port on USB2000 to serial port on desktop or notebook PC	$115
USB-ADP-PX2	Adapter block and cable to connect the PX-2 Pulsed Xenon Lamp or LS-450 Pulsed Blue LED to the USB2000+	$69
ACC-CON-US2	Spectrometer accessory connector for external triggering	$0

Specifications

Physical
Dimensions:	89.1 mm x 63.3 mm x 34.4 mm
Weight:	190 grams
Detector
Detector:	Sony ILX511 linear silicon CCD array
Detector range:	200-1100 nm
Pixels:	2048 pixels
Pixel size:	14 μm x 200 μm
Pixel well depth:	~62,500 electrons
Sensitivity:	75 photons/count at 400 nm; 41 photons/count at 600 nm
Optical Bench
Design:	f/4, Symmetrical crossed Czerny-Turner
Focal length:	42 mm input; 68 mm output
Entrance aperture:	50 µm wide slit
Grating:	2 (250-800 nm)
Detector collection lens:	L2
Other bench filter options:	Longpass OF-1 filters
Collimating and focusing mirror:	Standard
UV enhanced window:	UV2
Fiber optic connector:	SMA 905 to 0.22 numerical aperture single-strand optical fiber
Spectroscopic
Wavelength range:	200 - 850 nm
Optical resolution:	~0.3-10.0 nm FWHM
Signal-to-noise ratio:	250:1 (at full signal)
A/D resolution:	16 bit
Dark noise:	50 RMS counts
Dynamic range:	2 x 10^8 (system); 1300:1 for a single acquisition
Integration time:	1 ms to 65 seconds
Stray light:	<0.05% at 600 nm; <0.10% at 435 nm
Corrected linearity:	>99.8%
Electronics
Power consumption:	250 mA @ 5 VDC
Data transfer speed:	Full scans to memory every 1 ms with USB 2.0 or 1.1 port, 300 ms with serial port
Inputs/Outputs:	No
Analog channels:	No
Auto nulling:	No
Breakout box compatibility:	No
Trigger modes:	3 modes
Strobe functions:	Yes
Gated delay feature:	Yes
Connector:	10-pin connector
Computer
Operating systems:	Windows 98/Me/2000/XP, Mac OS X and Linux with USB port; Any 32-bit Windows OS with serial port
Computer interfaces:	USB 2.0 @ 480 Mbps; RS-232 (2-wire) @ 57.6 K baud
Peripheral interfaces:	I2C inter-integrated circuit

Irradiance Package Comparison

Contact an
Ocean Optics
Applications Scientist

USB2000+RAD Spectroradiometer for Irradiance Measurements