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STS Data Sheet
Description
This document addresses the latest protocol version (0x1100). Previous versions will be deprecated.
The Ocean Optics STS Spectrometer is a family of compact, low-cost, highly reproducible (unit-tounit) instruments ideal for embedding into OEM devices. STS includes the linear ELIS1024 detector
in a footprint that is less than 50 mm (2”) square optical bench, plus all the circuits necessary for
spectrometer operation.
The STS provides full spectral analysis with low stray light, high signal-to-noise ratio, and optical
resolution of ~1.5 nm (FWHM) and is especially useful for high-intensity applications such as LED
characterization and absorbance/transmission/reflection measurements. Available STS models include:
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STS-VIS Microspectrometer, 350 – 800 nm
STS-NIR Microspectrometer, 650 – 1100 nm
STS-UV Microspectrometer, 190 – 650 nm

The STS spectrometer interfaces to PCs, PLCs and other embedded controllers through USB 2.0 or
RS-232 communications. The information included in this document provides detailed instructions on
the connection and functionality of the STS.
The detector used in the STS spectrometer is a high-sensitivity 1024-element CCD array from
Panavision, product number ELIS-1024. (Ocean Optics applies a coating to the detector, so the optical
sensitivity could vary from that specified by the manufacturer.)
The STS can be powered by a USB interface or GPIO port. The STS is a microcontroller-controlled
spectrometer, thus all operating parameters are specified through software interfacing to the unit.

Note
To achieve faster transfers than 17ms for 1024-pixel scans or 8ms for 128-pixel scans,
it is necessary to insert a USB2.0 High-Speed hub between the STS and the host
(PC). With the hub in place, it is possible to reach 13ms (75Hz) for 1024 pixels and
less than 4ms (>250Hz) for 128 pixels. This is a USB limitation that is not specific to
either the STS or the Ocean Optics device drivers.

Features
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ELIS1024 Detector
• 1024 pixel linear CMOS
• Pixel size: 7.8 x 125 µm

030-00000-003-05-201502

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