Operator`s manual

Table Of Contents
125 Signametrics
DMMSetAperture
SMU2060 SMU2064
Description Set the measurement Aperture.
#include "SMU2060.h"
#include "USBDMMUser.h"
int DMMSetAperture(int nDmm, int iAperture)
Remarks This function sets the measurement Aperture. This is the the integration time of the A/D
or the timer during which the A/D makes a measurement. The allowed values are defined
in the USBDMMUser.h file. Depending on DMM model and mode of operation, the
highest Aperture can be set as high as 5.066s (APR_5p066s) and the lowest 2.5µs
(APR_2p5us). See sections
2.11 and 4.4 for details. See also DMMSetPLC() function.
Parameter
Type/Description
nDmm
int Identifies the DMM. DMMs are numbered starting with zero.
iAperture
int A pre-defined constant corresponding to the desired integration
time.
Return Value The return value is one of the following constants.
Value
Meaning
DMM_OKAY
DMM initialized successfully.
Negative Value
Error code
ERR_APERTURE
Invalid aperture value.
Example status = DMMSetAperture(0, APR_16p67ms); // Set to 16.66ms
DMMSetAutoRange
SMU2060 SMU2064
Description Enable/Disable autorange operation of DMM
#include "SMU2060.h"
int DMMSetAutoRange(int nDmm, int bAuto)
Remarks This function enables or disables autorange operation of the DMM.
Parameter
Type/Description
nDmm
int Identifies the DMM. DMMs are numbered starting with zero.
bAuto
int Determines whether or not autoranging is done. The value TRUE
(1) enables autoranging, FALSE (0) disables it.