Download Acquisition commands and parameters - Pascal-Man

Transcript
The Acquire Menu
P-26
The Bruker standard 2Hlock file contains default values for lock power, loop gain,
loop time and loop filter for each solvent. If a spectrometer installation is started
from scratch, these values are automatically read
when you do edlock the first
INDEX
time. If the 2Hlock file already exists and the lock/loop parameters were already
defined, then these values are displayed and the values from the default file are not
used. The LOADSTAN button in edlock will read the default file and overwrite all
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previous settings. Please make sure, before you use LOADSTAN, that you have a
print-out or disk copy of the original settings.
The table shown with the command edlock contains an additional column R.Shift.
The value (in ppm) entered here is added to the default calibration done by the sref
command. This allows chemical shift corrections where, for whatever reason, the
reference shift is not calculated accurately enough.
The parameters described last are used by the command sref for automatic calibration (referencing) of a spectrum. width (in ppm) defines the range that a reference
signal is searched for by sref in order to determine the exact origin.
1.3.9 Printer/plotter configuration [cfpp]
Execute the command cfpp to inform XWIN-NMR of which types of plotters or
printers are connected to your computer, and to which devices. During this procedure you will also assign names to these devices. They are used to define where a
spectrum plot or text printout is to be sent. All details of cfpp are explained in the
chapter The 1D Output Menu.
1.3.10 Configure MAS unit [cfmas]
Execute cfmas if your spectrometer is equipped with a MAS pneumatic unit. You
must specify the RS232 device to which the unit is connected. You may also specify the pressure, the air on time (in seconds) for sample insertion and ejection, and
the sample diameter (normal or wide bore).
1.3.11 Configure BPSU unit for LC-NMR [cfbpsu]
Execute cfbpsu if your spectrometer is equipped with a BPSU accessory designed
to run LC-NMR experiments. cfbpsu asks for the RS232 device of the spectrometer where the BPSU is connected to, e.g. tty13.