Rank: 192 based on 284 downloads (last 30 days) and 14 files submitted
Personal Profile:
Professional Interests:
MEMS, resonators, energy systems

 

Watch this Author's files

 

Files Posted by M. A. View all
  • 1 - 5 of
  • 14
Updated   File Tags Downloads
(last 30 days) 		Comments Rating
19 Nov 2011 Screenshot Ringdown Ringdown.m determines the resonator frequency and Q from a ringdown measurement. Author: M. A. Hopcroft resonator, resonance frequency, q, quality factor, ringdown 10 0
10 Oct 2011 LVM file import Imports LabView .lvm data files into MATLAB Author: M. A. Hopcroft data export, data file, lvm, data import, labview, import 77 10
  • 4.0
4.0 | 1 rating
25 Jun 2011 serialDataStream serialDataStream shows you how to capture continuous data streams from USB devices and serial ports. Author: M. A. Hopcroft communications, usb, serial port, instrument interface 42 0
  • 1.0
1.0 | 1 rating
04 Jan 2011 Published MATLAB Files KPIB: Kenny-Purpose Interface Bus A common interface for control of multiple scientific instruments with GPIB and serial connections. Author: M. A. Hopcroft serial port, instrument drivers, gpib, instrument control, instrument driver, instruments 34 10
  • 5.0
5.0 | 4 ratings
03 Nov 2010 Screenshot allan_modified allan_modified.m calculates the modified Allan deviation (MDEV) of a time domain signal. Author: M. A. Hopcroft adev, mdev, frequency stability, allan variance, probability, statistics 12 0
Comments and Ratings by M. A. View all
  • 1 - 5 of
  • 14
Updated File Comments Rating
10 Oct 2011 LVM file import Imports LabView .lvm data files into MATLAB Author: M. A. Hopcroft

Several people have reported problems where data cannot be imported. This may be related to LVM files that use a comma as a decimal separator instead of a period. This has been fixed in the latest version of lvm_import (and also in the NI LVM software).
06 Aug 2011 allan Calculates standard Allan Deviation (ADEV) of a time domain signal. Author: M. A. Hopcroft

type "help allan" to see the help file. email me directly if you are still having trouble.

16 Jun 2011 KPIB: Kenny-Purpose Interface Bus A common interface for control of multiple scientific instruments with GPIB and serial connections. Author: M. A. Hopcroft

The AO_800 serial communication is often tricky and temperamental. Contact me directly through the email on my author page and I will try to help.

15 Jun 2011 Turbo plot A fast replacement for the built in PLOT function. Works much faster when the data sets are large Author: Yuval Cohen

Didn't work for me- tplot(d(:,1)), where "d" has length 22 million or so, just churns and fails to plot. I'm speculating, but it might be that the method used here of looking for local minima/maxima is not efficient for data that is not smooth.
09 Sep 2010 LVM file import Imports LabView .lvm data files into MATLAB Author: M. A. Hopcroft

Note: the latest version (v1.2) uses the suggestions from Jo (13Jul2010), related to "Special" headers in the LVM file.
Comments and Ratings on M. A.'s Files View all
  • 1 - 5 of
  • 40
Updated File Comment by Comments Rating
07 Feb 2012 allan_overlap Calculates overlapping Allan Deviation (ADEV) of a time domain signal. Author: M. A. Hopcroft Aaron

Very handy tool, easy to use.
Thanks alot for your help!

07 Feb 2012 allan Calculates standard Allan Deviation (ADEV) of a time domain signal. Author: M. A. Hopcroft Aaron

Very handy tool, easy to use.
Thanks alot for your help!

17 Oct 2011 serialDataStream serialDataStream shows you how to capture continuous data streams from USB devices and serial ports. Author: M. A. Hopcroft Chandran, Dhaneesh
12 Oct 2011 res_meas GUI for resonator measurement and data download from Signal Analyzers and Oscilloscopes Author: M. A. Hopcroft Srikanth

Hello. Thanks for this file. I am trying to connect/grab data from HP 4195A Network Analyzer. I am able to communicate with the instrument via Matlab's tmtool, but for some reason res_meas claims that there is no instrument at the gpib address. Any ideas on what could cause this? Thanks
10 Oct 2011 LVM file import Imports LabView .lvm data files into MATLAB Author: M. A. Hopcroft Hopcroft, M. A.

Several people have reported problems where data cannot be imported. This may be related to LVM files that use a comma as a decimal separator instead of a period. This has been fixed in the latest version of lvm_import (and also in the NI LVM software).
Top Tags Applied by M. A.
  • 1 - 5 of
  • 59
adev, statistics, allan variance, data export, data import
Files Tagged by M. A. View all
  • 1 - 5 of
  • 14
Updated   File Tags Downloads
(last 30 days) 		Comments Rating
19 Nov 2011 Screenshot Ringdown Ringdown.m determines the resonator frequency and Q from a ringdown measurement. Author: M. A. Hopcroft resonator, resonance frequency, q, quality factor, ringdown 10 0
10 Oct 2011 LVM file import Imports LabView .lvm data files into MATLAB Author: M. A. Hopcroft data export, data file, lvm, data import, labview, import 77 10
  • 4.0
4.0 | 1 rating
25 Jun 2011 serialDataStream serialDataStream shows you how to capture continuous data streams from USB devices and serial ports. Author: M. A. Hopcroft communications, usb, serial port, instrument interface 42 0
  • 1.0
1.0 | 1 rating
04 Jan 2011 Published MATLAB Files KPIB: Kenny-Purpose Interface Bus A common interface for control of multiple scientific instruments with GPIB and serial connections. Author: M. A. Hopcroft serial port, instrument drivers, gpib, instrument control, instrument driver, instruments 34 10
  • 5.0
5.0 | 4 ratings
03 Nov 2010 Screenshot allan_modified allan_modified.m calculates the modified Allan deviation (MDEV) of a time domain signal. Author: M. A. Hopcroft adev, mdev, frequency stability, allan variance, probability, statistics 12 0

Contact us at files@mathworks.com