Lab-Tools.com Scientific Instrumentation and Software
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Lab-Tools Mk3 NMR Relaxation Spectrometer.
Here at Lab-Tools.com/Instrumentation
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NMR Linear Transmitter.
A new NMR relaxation transmitter design, based on the latest surface mount devices,
originally targeted primarily at liquids NMR, but now able to also make relaxation measurements on solid samples
including polymers and even brittle ice.
Digital NMR Transmitter
The latest version of this, based on an extensively tested earlier version,
is in the final stages of development.
NMR Ancillary Instrumentation.
The Precision DVM (see above right) and the
Digital Scope / Transient Processor (see below) have
been working 24/7 in the lab for a number years and are now ready for release.
Biological, Medical and Nano Structured materials - NMR done Simply.
J Beau W Webber. Archives in Biomedical Engineering & Biotechnology
1(4): 2019. ABEB.MS.ID.000517
Some of the papers prepared using previous generation Mk2 Lab-Tools NMR Spectrometers :
www.lab-tools.com/publications/Webber_JBW.html
Porous Publications:
over 100 refereed papers
+ 70 conferences
Lab-Tools - Instrumentation - Compact precision all-in-one NMR Spectrometer
Lab-Tools NMR Relaxation Spectrometer - 2019-09-04.pdf
Lab-Tools NMR Relaxation Spectrometer - NMR Cryoporomety pore size measurement.pdf
Lab-Tools NMR Relaxation Spectrometer - Instrument.pdf
Lab-Tools NMR Relaxation Spectrometer - Example Measurements.pdf
Papers and Posters prepared using the Lab-Tools Mk3 and Mk2 Spectrometers
Pay by Secure PayPal and/or Credit Card. |
Lab-Tools - Instrumentation - compact precision NMR Spectrometer - Mk3
Screen capture during measurement of FID and echo from 119mg Hexadecane liquid sample.
NMR Frequency ~ 24 MHz. 90 pulse : 5 us. NMR Frequency Lock : On.
Top graph : Displaying captured Single-Shots.
Bottom graph : averaged echo peak - polynomial fitted and equations solved to obtain peak amplitude.
Lab-Tools - Measurement of the crystaline/amorphous properties of PTFE - compact precision NMR Spectrometer -v3
Lab-Tools NMR Spectrometer set up part 1
https://youtu.be/UTxjdIOmkBE
Assembling the NMR hardware, powering up.
Lab-Tools NMR Spectrometer set up part 2
https://youtu.be/Z3hvaKICiV0
Running the software and firmware, adjusting the NMR frequency and RF pulse widths.
Lab-Tools NMR Spectrometer set up part 3
https://youtu.be/uDdGkWZhz9U
Configuring measurement and auto-fitting of some NMR relaxation times
Papers prepared using these Mk3 Lab-Tools NMR Spectrometers :
Posters prepared using these Mk3 Lab-Tools NMR Spectrometers :
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Behind the scenes
Lab-Tools interface their NMR instrumentation using 3 different Field Programmable Gate Arrays (FPGAs).
This is an overview of how we design instruments in a modular manner.
Lab-Tools
- Bespoke
In addition to off-the-shelf instruments, we can design new
instrumentation, based on these modules or others, for you, so
please do discuss with us new designs that you may interested in
commissioning.
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FPGA_PC
A new firmware interface for USB interfaced instrumentation.
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Lab-Tools Transient Averager Modules
A new Lab-Tools module nearing the end of development is a
USB2 interfaced analogue transient averager module, with
on-board FPGA for averaging and signal processing. Based on
a coherent, stacking credit-card CardStac module
form-factor, and on the Lab-Tools FPGA Modular
Firmware Skeleton for multiple instruments.
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![]() USB2 interfaced Transient Capture / Average / Process module. Download 1 page PDF document |
Applications :
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Features :
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This module is
primarily intended for the highest precision 5 channel
differential logging of thermocouple voltages, using an
external cold-junction reference.
Can also be adapted for 10 channel single-ended use, and for
ratiometric use with strain-gauges etc.
Up to 6 additional optional gold plated SMA connectors may be specified on credit-card sized form-factor.
For extra
capabilities, additional DVM boards or boards with other
function may be added to the stack.
FPGA Modular Firmware Skeleton VHDL code is available for
implementing multiple instruments.
This video describes an example USB2 interfaced FPGA
co-processor for use with the array processing language Apl.
This co-processor implements a single scientific algorithm :
Binning. As such it is an example of what can be achieved using
field-programmable gate array co-processors with Apl.
The FPGA module used is the Morphic II, available from FTDI. This
module has the advantage that it does not require a USB Blaster to
program it.
Software, firmware and modules are also available from Lab-Tools
Ltd., who are also developing a series of credit-card sized
interface and data I/O modules to interface with them.
The FPGA co-processor is accessed and controlled from AplX, a
version of the array processing language Apl, from Micro-Apl.
Lab-Tools' is adding the simple credit-card sized Linux computers "Raspberry Pi" to the list of instrumentation in the design stable. These may offer very compact ways to host some of the other more advanced Field Programmable Gate Array (FPGA) instrumentation that Lab-Tools develops. These boards may also speed the implementation of other highly compact designs such as the multi-processing Adapteva Parallella. So Lab-Tools has implemented a good set of technologies that are now up and running on the Raspberry Pi credit-card Linux computer :
The first Raspberry Pi has just been configured as an active web server : URL - (this address may change soon). Useful web-server applications will be added to this in the near future. To order, email me - Dr. Beau Webber - so I can decide on postage, then use the PayPal box below. |
![]() Raspberry Pi - Apache Web Server with SSH + VNC control windows on PC laptop. |
For ordering items that you have
discussed with me, enter the description, |
Applicable to a wide range of instrumentation, including Nuclear Magnetic Resonance (NMR), Magnetic Resonance Imaging (MRI) Ultrasonics, capturing and processing decoded Optical information, or just general laboratory or school digital interfacing :
USB Direct Digital Synthesizer : frequency agile / sweeping: 0.001 to 150MHz, 14 bit, optional dual-channel for quadrature (real:U & imaginary:V) signals
USB Averaging Analogue Data-Capture for Digital Scope / Transient Recorder / Transient Averager uses and Digital RF : Dual Channel, 2x 0 to 65MS.s-1, 12 bit.
USB Averaging Analogue Data-Capture for Digital Scope / Transient Recorder / Transient Averager uses : Dual Channel, 2x 5 MS.s-1, 12 bit, ± 1V input range.
USB Averaging Analogue Data-Capture for Digital Scope / Transient Recorder / Transient Averager uses : Dual Channel, 2x 1 MS.s-1, 13 bit. Software-selectable input ranges : ± 10 V, ± 5 V, ± 2.5 V, 0 V to +10 V.
USB R.F. Digital-Receiver, with direct digital sampling of the RF, quadrature 32 bit digitally controlled oscillators, three stages of FIR filtering, digital output gain scaling, followed by optional signal processing and Transient Recorder/Averager stage: 0.1 to 32MHz (below Nyquist), 12 bit.
Optional additional front-end pre-amp module : very low noise : sub-nanovolt.Hz1/2, 120MHz bandwidth.
Optional data processing algorithms in firm-ware uploaded to a 80k gate FPGA over the USB interface, in less than 100 ms, so they can be re-loaded on the fly to 'morph' the function of the unit.
Optional data processing algorithms in high-level array-manipulating languages.
If you have specific requirements that can be best encompassed at the design stage, please contact me regarding them : Beau@Lab-Tools.co.uk
The R.F. processing is implemented in VLSI devices, the I.F.
processing in a Field Programmable Gate Array (FPGA) device, and
the A.F. processing in the PC using an Array Programing language.
Note: The RF modules are Export Controlled
devices.