Spectrum card based solutions - case studies and technical resources
|Summarised below are examples of where the products we supply have been
used. This is just a small sample but we hope this provides you with a useful
insight into the ways we can help. To date our solutions cover a wide area
of applications including aeronautics, automotive testing, data bus and circuit testing,
meteorology, military defence, medical imaging, radar design, space vehicle tracking,
telecommunications, ultrasonic structural testing,....the list goes on!
The VivoSightŪ OCT scanner uses the technique of swept-source Optical Coherence
Tomography (SS-OCT) for cross-sectional imaging of skin. This is a significant
new tool to assist in diagnosis and treatment of skin cancers and other skin
conditions. This application uses four interferometer channels simultaneously
to increase depth of focus and improve contrast and required a 4 simultaneous
channel 20 Mega sample/sec digitizer card in its design.
Measuring the performance of CPU based avionic and automotive systems is critical
to their development and evolution. PC-based verification tools rely on measurement
data collected from such embedded targets. The Rapita Systems RTBx digital data
logger provides an efficient way to collect and time-stamp real-time data
from a wide variety of embedded targets, over many weeks if necessary. The
M2i.7000 series of digital I/O cards were chosen as a desirable component,
due to the versatility of having models with 8/16 bit and 32bit I/O ports
as well as a very high data acquisition speed (up to 125MHz).
The request was for a complete solution for portable recording of dynamic mixed mode
(analog and digital channels) data during test drive. The data should be
replayed and analysed later in Research and Development laboratory. A full
working system including operation software was needed. High resolution signal
capture and waveform capture cards were used in the design as well as a 16 bit
digital I/O card for automotive sensor testing.
|Further application examples|
|M2i.4961-exp (4 channel: 60 MS/sec) digitiser
card used for fast pulse laser development, with the cards BASEXIO option
used as digital status monitor to indicate the two types of pulse arriving at the
M2i cards A/D inputs. Applications for such lasers include high harmonic generation
spectroscopy, photo-electron spectroscopy with XUV probe pulses, studies of
autoionisation dynamics and ultra-fast demagnetisation.|
|A Hall-effect sensor is commonly
used in the automotive industry to measure accurately the speed of an engine camshaft,
such as those commonly found within the cylinder head of a car. A rotating toothed
wheel on the camshaft is monitored by such a sensor, which provides a digital output
(0 to 5V). A system based on the Spectrum 8 channel 16 bit 10MS/s M2i.4912-exp card
was used to provide an accurate and reliable way to automate the test of Hall-effect
sensors. Its high speed A/D inputs monitoring the quality of signal transitions
to estimate angle error and jitter at the boundaries of tooth and gap. As well as
recording the signal shape, precise camshaft positional information was
required too, determined by capturing signals from a sinusoidal encoder. Both the
encoder's analogue sine-cosine waveform (1V peak to peak) and a 32 bit digital word
derived from that waveform were simultaneously recorded. This gave angular position
within a rotation and the number of rotations from the start of the test. For this
purpose the M2i.4912-exp was combined with the synchronous digital option M2i.49xx-dig.
This option takes two of the M2i.4912-exp cards eight analogue channels and using
a simple software setting in the card driver, changes these to a pair of synchronous
16 bit wide digital ports.
This solution provided precise windows of sensor data just when required, to automate
the test process in a fast and reliable way.
|Medical research into the development of
impedance spectroscopy as an analytical tool in monitoring of the freeze
drying processes. The M3i.4121 (2 channel: 250 MS/sec) digitiser measures peak amplitude
and characteristic peak frequency.
|Quantum dot device development for
optical applications. Using M4i.4421-x8 (4 channel: 250 MS/sec) digitiser to monitor
laser pulsed light source. FPGA block averaging of captured data (option M4i.xxxx-spavg)
to reduces reliance on the CPU processing. This also helps to enable the highest
capture repetition rates possible.|
|Development a new generation of photoacoustic
excitation sources based on the use of laser diodes and ultrasound. Multiple
research applications for the M4i.4420-x8 (4 channel: 250 MS/sec) digitiser card.
For example the laser interrogates photoacoustic signal generated in a sample,
e.g. a tissue sample. A photo diode used to provide a resultant signal that can
be monitored by a M4i card. Applications include measurement of burn depths, wound
healing, pressure sores, plastic surgery procedures (grafts, flaps etc.) and
characterising skin pathologies for planning a surgical procedure|
DataQuest Solutions is always interested to find out more about the applications
Spectrum products are
used for and would like to offer you a special opportunity to help promote your
company or educational institute.
Free of charge we will submit your application story to technical magazines with
a readership across Europe, such as EDN
It will also feature without cost in our newsletters, this application page and the manufacturer's Web site.
We understand of course you may have limited time to prepare something; however
all we require are a few notes to be emailed over to us at
From the examples above you will see that it need not be a long story, although
an image or two always helps! Here are some general guidelines on what to include.
If you already have a technical paper that essentially covers much of the above,
we are happy to accept this, as long as we have permission to use its text and images.
Once received we will do any required editing, but will make sure you see the final
result to gain your approval. Note that some changes to the layout may occur once
released for magazine publication.
- The software and operating system
- Some general background on the application, i.e. a summary of the overall
working system, its purpose and what it is designed to achieve
- What the signal data represents and how it is displayed and used
|Links to informative technical resources
© DataQuest Solutions 15.10.14
Last revised 30.03.17