V_Helper for NUTS program for reading Varian-formatted floppies on a PC
This program is separate from NUTS. It allows a PC to read a floppy written by the older Varian Gemini, XL and series 4000 VXR spectrometers, and create a file in the NUTS (CDFF) format which can then be opened in NUTS. NUTS does not import these files Varian directly.
The program was written by Steve Silber at Texas A&M University. Some additional information about V_Helper can be found on his web site. Steve sells a full version with multiple options for output format, and sells V_Helper4Nuts for $25. All proceeds go to Texas A&M.
V_Helper is distributed on 5-1/4" diskette. There should be 4 programs on this diskette: DCT.EXE, VAR2CDFF.EXE, LIM2CDFF.EXE and ReadMe.1st.
DCT will do a diskette directory, similar to the dct command on the spectrometer systems. VAR2CDFF and LIM2CDFF will convert NMR data sets from Varian floppy disks or LimNet image files, respectively, to the Common Data File Format used by NUTS.
VAR2CDFF Version 1.6, S/N 1035.
Copyright (C) 1989-1995 by Texas A&M University. All Rights Reserved.
Convert a Varian FID on floppy disk for use with NUTS program.
Usage: VAR2CDFF vdir.vname [dest_dir] [/Tn /Z /P /F /I]
vdir.vname is a Varian style directory and name.
dest_dir is the data file destination directory.
/Tn is a Truncate option. n=1, 2, 4, 8, 16, 32 or 64K complex points.
Default value for n is 8K for no value or invalid value.
/Z forces Zero fill to next power of two.
/I save a parameter Information file.
/P Print the spectral parameter summary to the standard printer.
/F Flip spectrum end for end. (Complex conjugate of fid data).
/B force use of B: (non-default) drive instead of A: for DSK5.
VAR2CDFF /I DSK5.TEST1 C:\FELIX will convert a NMR data set called test1 to a data file
called c:\felix\test1.dat, and an information file called c:\felix\test1.inf. If no
destination directory is specified, the current working directory is used.
LIM2CDFF Version 1.6, S/N 1035.
Copyright (C) 1989-1995 by Texas A&M University. All Rights Reserved.
Convert a Varian FID from LimNet image for use with NUTS program.
Usage: LIM2CDFF limnet.img [dest_dir] [/Tn /Z /P /F /I]
limnet.img is the Varian limnet image, directory and name.
dest_dir is the data file destination directory.
/T is a Truncate option. n=1, 2, 4, 8, 16, 32 or 64K complex points.
Default value for n is 8K for no value or invalid value.
/Z forces extra Zero fill. Data is automatically zero filled to the next power of two. /Z
forces fill to an extra power of 2.
/I saves parameter Information file.
/P Print the parameter information to the standard printer.
/F Flip spectrum end for end. (Complex conjugate of fid data).
LIM2CDFF g:\mydata.5 C:\NUTS will convert a NMR data set called mydata.5 to a data file
called c:\NUTS\mydata.dat. An information file file called c:\NUTS\test1.inf may be
generated by specifying the /I option, otherwise it is only displayed. If no destination
directory is specified, the current working directory is used.
VAR2CDFF and LIM2CDFF have been modified to permit conversion of files containing more than 64K data points. Varian software normally limits NP to 60032, but it is possible to collect larger data sets on a spectrometer with an acqisition processor memory expansion. These data sets will now be converted properly.
Troubleshooting
It is recommended to use Double Sided/Double Density diskettes, not High density.
V_HELPER uses its own floppy disk I/O instead of the ROM Bios routines. Errors can occur when running V_Helper in a DOS window under Win95, caused by Win95 interupting the disk read process. To test this, try booting your computer to a DOS floppy (running DOS without Win95) and try running the V_Helper utilities directly from DOS. If this eliminates the error, then the problem is with the Win95 background processes.
Last updated 6/1/99