Overview of MacNMR Software

The Tecmag data system used for operation of the QE 300 uses MacNMR to control data acquisistion and processing. This document is intended to be an overview of the software program.

Open the Software

After the MacNMR software loads, select a user file to specify the instrument parameters and initial settings. The opening screen looks like the figure below.

Dashboard. This shows the primary instrument settings in use.
Comments
Control Panel. This opens the instrument control windows.
Pulse Program. This opens the pulse programing window.

Dashboard

The dashboard window is shown below. The features that can be adjusted here include:

Scans 1D - The number of spectra acquired. Should be a multiple of 4 for phase cycling.
SW - The spectral window
Points - The number of data points acquired. Software rounds down to the next value of 2ⁿ.
PW01 - The pulse width.
Last Delay - The recycle delay between acquisitions.

Control Panel

There are three primary control panels for the instrument. You can toggle between them using the following buttons.

Lock - Controls deuterium solvent lock
Shim - Controls the shim settings
Frequency - Controls the acquistion frequency, decoupling, sample loading, spinning.

Lock

The lock control panel, shown below, is used to:

Set the lock solvent
Set the lock transmitter power
Set the lock transmitter offset
Turn the lock on
Turn the lock to standby
Run the autolock

Shim

The shim control panel, shown below, is used to:

Load shim settings
Save shim settings
Optimize the shims (typically spinning Z1, Z2, and Z3)
Control the spinner

Frequency

The frequency control panel, shown below, is used to:

Eject the sample
Load the sample
Set the proton decoupler
Reciever settings
Observation frequency (don't adjust here)

Pulse Program

The pulse program window, shown below, includes the following buttons.

Dashboard. This shows the primary instrument settings in use.
Comments for the pulse program.
Toggle Pulse Sequence Display between graphical and text.
Pulse Acquisition Settings, detailed below.
Return to Setup Window to display FID and spectra.

Pulse Acquisition Settings

The pulse acquisition settings window, shown below, is used to turn on 2D acquisition and set parameters for 2D experiments.

Pulse Tables

To edit a pulse table hold the "option" key and click on the table. This will open the following window that is used to edit the table. In this window you may open default tables saved for different experiments. Table T1 is reserved for 1d experiments, Table T2 for 2d, etc.

Main Menu

In the main menu, shown below,

The script button is used to access programming scripts for AutoPhase and AutoGain.

Acquistion

The 1D data acquisition box appears as:

The 2D data acquisition box appears as:

Processing

For processing 2D data files that are sequential 1D experiments like the T1 Inversion Recovery or Pi pulse experiments, select the commands and then hold down the option key to select "1DFT". The following window will open.

This page is maintained by
Scott Van Bramer
Department of Chemistry
Widener University
Chester, PA 19013

Please send any comments, corrections, or suggestions to svanbram@science.widener.edu.

This page has been accessed times since 5/30/97.
Last Updated Tuesday, January 22, 2002 2:38:52 PM