ADQ14OCT - Data Acquisition Unit - Digitizer: 14-bit, 1 GHz Swept-Source Optical Coherence Tomography platform - PCI Express & USB3

PRODUCT INFORMATION
Resolution	14 bit
Sample rate	2 and 8 (GSPS internal)
Input channels	1
Trigger	Software / External / Internal / Level
Interfaces	USB 3.0, PCIe, PXIe
Memory size	2 GByte
Data transfer rate	USB 3.0: 200 MByte/s, PCIe: 3000 MByte/s
K-clock input
Frequency	Variable, 10 to 1000 MHz
Input port	AC-coupled, 50-Ohm, single ended
Input range	Programmable 100 to 1000 mV_pp or 300 to 3000 mV_pp
OCT data input
Input port	DC-coupled, 50-Ohm, single ended
Input bandwidth	500 MHz
Input range	500 mV_pp
Offset	Adjustable -250 to 250 mV_pp
A-scan trigger
Input port	Programmable 50/500-Ohm, single ended
Voltage range	-0.3 to 3.3 V
Threshold	Programmable 0.5 and 3.0 V
Polarity	Programmable rising/falling edge
B-scan trigger
Input port	Programmable 50/10k-Ohm, single ended
Voltage range	-0.3 to 3.3 V
Threshold	Programmable 0.5 and 3.0 V
Polarity	Programmable rising/falling edge

Signal Processing Devices Sweden AB (SP Devices) announces the release of ADQ14OCT, a member of the successful ADQ14 digitizer product family. The ADQ14OCT is optimized for use in Swept-Source Optical Coherence Tomography (SS-OCT) applications and contains all features necessary to support the acquisition of cross-sectional and volume images. SP Devices now broadens its base of supported applications with feature-rich, high-performance digitizers.

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Overview

The ADQ14OCT supports variable frequency clocking such as the laser K-clock in SS-OCT and supports the acquisition of high-resolution cross-sectional and volume images. The ADQ14OCT includes the following features: ADQ14OCT PCIe 200x265

Variable K-clock input from 10 MHz to 1000 MHz
Full Nyquist-rate OCT input bandwidth
14-bit resolution with low spurious errors and low noise for high image quality
USB3.0 interface for compact designs as well as x8 Gen. 2 PCI-e interface for high-speed transfer of data to host PC
Embedded, real-time FFT programmable between 64 and 32k points
Flexible and programmable options for A-scan and B-scan triggering
2 GByte on-board memory

Interfaces

The analog front-end is built up by four options for optimizing the ADQ14 to the specific task.

DC-coupled, 50-Ohm, 500mVpp OCT signal input (larger input ranges available upon request
AC-coupled, 50-Ohm K-clock input
A-scan trigger input with programmable impedance, threshold, and polarity
B-scan trigger input with programmable impedance, threshold, and polarity
USB3.0, PXI-express or PCI-express Gen. 2 x8
12 Volt power supply

3-year warranty on SP Devices' products

Buy with confidence - our products are manufactured to the highest standards of quality and technology.

Features

SP Devices’ technology for accurate linearization of K-clock

ADQ14OCT contains real-time firmware for the support of variable frequency clocking including:

8 GSamples per second internal processing for highly accurate sampling time re-computation and OCT signal interpolation
Filtering and signal preconditioning

Firmware

The ADQ14OCT is available as standard with an embedded OCT signal acquisition firmware, real-time FFT and logarithm computations allowing:

Simultaneous read-out of time-domain and frequency-domain data
Flexible system and triggering configurations using the ADQ14OCT API
System design in C/C++ and Matlab™

Building a system with ADQ14OCT

Another key parameter is the systems build up. ADQ14OCT supports a several possible systems designs:

PCI Express interface opens for rapid data transfer and advanced disk storage solution. The on-board FIFO of 2 GBytes handles burst data and PCI Express scheduling for real-time performance. The PCI Express card is integrated into a PC for a self-contained solution. Since the ADQ14OCT is half length, small chassis may be used for a space-saving compact design.
USB3.0 form factor enables a flexible systems solution where the digitizer is placed inside the instrument rather than in the host PC. The data rate up to 200 Mbytes/s in combination with embedded firmware processing is a powerful over all solution. Storing data to disk, processing in a compact Micro PC are all easy-build solutions with the ADQ14 in USB3 form factor.
The PXIe format is specialized for modular instrument in a rough environment.

Data acquisition

ADQ14OCT supports A- and B-scan triggered streaming of data to the host PC as well as recording of multiple records in the on-board 2Gbytes memory.

ADQ Design Services

SP Devices' offers the possibility of customizing the ADQ series digitizer boards. Customizations can include hardware, software and FPGA firmware changes. Read more about our design services here.

Further Information

For further information, download the datasheet here and you will be contacted by our sales department.