Dayton T. Brown Inc.
Dayton T. Brown, Inc. (DTB) has been synonymous with the pursuit of excellence and customer serv……...

The Exemplar® Plus<sup<® from B&W Tek is a high performance smart spectrometer that utilizes a low stray light unfolded Czerny-Turner spectrograph. It has a highly sensitive TE Cooled back-thinned (BT) CCD detector, which is linearly summed for high dynamic range. </sup<®
<sup<®The Exemplar Plus’s long focal length combined with a high quantum efficiency detector provides excellent data quality across the entire 190-1100 nm spectral range. It has a high signal to noise ratio, which makes it perfect for low light level applications. It also has an integrated shutter that enables dark scan measurements, even while illuminated. </sup<®
<sup<®As a member of the Exemplar product line, it features USB 3.0 communication and on board data processing. The Exemplar product line is also optimized for multi-channel operation, which features gate jitter and ultra-low trigger.</sup<®
As a standard configuration, the Exemplar Plus comes with: a LVF filter, wavelength range of 200 - 850 nm, a spectral resolution of 1.5 nm, 25 µm slit, and a ruled grating (800 mm/250 nm).
Applications
The key applications of the Exemplar Plus are as follows:
Raman and fluorescence spectroscopy
Low light level UV to NIR spectroscopy
Gas and water analysis
On-line process monitoring
LED characterization
LCD display measurement
Features
The key features of the Exemplar Plus are as follows:
Smart
On-board processing including averaging, smoothing, and dark compensation.
Speed
Obtains and transfers over 140 spectra/second at an integration time of 6.3 ms.
Synchronous
Supports up to 32 devices with gate jitter (+/- 20 ns) and ultra-low trigger delay (95 ns).
Signal to noise ratio:
| On-board Averaging 1 | ~540 |
| On-board Averaging 10 | ~1900 |
| On-board Averaging 100 | ~4800 |
Additional Features
High UV, Vis, and NIR response
Detector elements: 2048
Over 60% QE at 200 nm
Integrated shutter
Configurable cooling temperature (0° default)
Over 90% peak QE
Specifications
The key specifications of the Exemplar Plus are as follows:
| Power Input | 5 V DC @ 6 A (Maximum at Startup)5 V DC @ 2.5 A (Typical at Normal Operation) |
| Detector Type | Back-thinned CCD Array |
| Wavelength Range | 190 nm - 1100 nm |
| Detector Pixel Format | 2048 Effective Detector Elements |
| Effective Pixel Size | 14 µm x ~0.9 mm |
| Spectrograph f/# | 3.6 |
| Spectrograph Optical Layout | Standard Czerny-Turner |
| Dynamic Range | 50,000 (Typical) |
| Digitizer Resolution | 16-bit or 65,535:1 |
| Data Transfer Speed | >140 Spectra per Second at Integration Time of 6.3ms in Burst Mode |
| Trigger Delay | 95 ns +/- 20 ns (call for timing diagram) |
| Readout Speed | > 400 kHz |
| Integration Time | 6.3 ms, Adjustable in 1 µs Increments |
| Aux Port | External Trigger, 4 Digital Outputs (2 with Shutter Control), 2 Digital Inputs, Analog Input, Analog Output and System Reset |
| Operating Temperature | 5 °C - 35 °C |
| Operational Relative Humidity | 85% Noncondensing |
| CCD Cooling | Default: 0 °C at Ambient of 25 °C. |
| Weight | 3.6 lbs (1.6 kg) |
| Dimensions | 7.40 in x 5.05 in x 2.80 in (188 mm x 128 mm x 71 mm) |
| Computer Interface | USB 3.0 / 2.0 |
| Operating Systems | Windows: 7, 8 (32-bit & 64-bit) |
Technical Details
Spectrograph

Entrance Slit
| Slit Option | Dimensions | Approx. Resolution 350-750 nm |
|---|---|---|
| 10 µm | 10 µm wide x 1 mm high | Call |
| 25 µm | 25 µm wide x 1 mm high | ~1.8 nm |
| 50 µm | 50 µm wide x 1 mm high | ~2.9 nm |
| 100 µm | 100 µm wide x 1 mm high | ~4.5 nm |
| 200 µm | 200 µm wide x 1 mm high | Call |
| Custom Slit Widths Available | ||
Diffraction Grating
| Best Efficiency | Spectral Coverage (nm) | Grating |
|---|---|---|
| Vis / NIR | 350 - 1050 | 400/550 |
| NIR | 750 - 1050 | 1000/900 |
| UV-NIR | 190 - 1100 | 300/280 |
| UV | 190 - 380 | 1500/250 |
| Custom Configurations Available | ||
Dayton T. Brown, Inc. (DTB) has been synonymous with the pursuit of excellence and customer serv……...
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