emcSetFocus

NAME

emcSetFocus - Change the focus setting

SYNOPSIS

#include "emc.h"
int emcSetFocus(EM *em, int units, int correction,
                int relative, double defocus);

DESCRIPTION

emcSetFocus() sets the current defocus setting of the instrument.

*em

points to an EM control and communications structure that was returned by the emcOpen() call.

units

the units the values are expressed in:

UNCALIBRATED_UNITS	Focus is measured in units
ANGSTROM_UNITS	Focus is measured in angstroms
NANOMETER_UNITS	Focus is measured in nanometers
MICRON_UNITS	Focus is measured in microns

autocorrect

Type of side effect corrections to perform:

EMC_NONE

No side effect correction

relative

Flags what the astigmator change is relative to:

EMC_RELATIVE	Focus change measured relative to current value
EMC_ABSOLUTE	Focus change measured relative to "no focus change" (absolute setting)

focus

the amount of focus change

DIAGNOSTICS

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