Operator`s manual

Table Of Contents
123 Signametrics
Description Set the measurement delay of AC based Capacitance.
#include "SMU2060.h"
#include "USBDMMUser.h"
int DMMSetACCapsDelay(int nDmm, double ldDelay)
Remarks This function sets the AC based capacitance measurement delay, which is the time the
measurement system settles. The default value is 0s. This function can set this value
from 0.0 to 10.0 seconds. Since the DMM is optimized for the defalut value, it is possible
that changing this value will introduce additional error. A negative delay value causes the
range limits to be disabled, making it possible to measure values greater than defined by
the selected range. For instance a value of -0.01 will set the delay to 0.01s and remove
the range limit. The default is hat range limits are enabled.
Parameter
Type/Description
nDmm
int Identifies the DMM. DMMs are numbered starting with zero.
ldDelay
double The time the DMM is allowed to settle the measurement.
Can be set beetween -10.0 and 10.0 seconds. A negative value
disables range limits.
Return Value Integer error code.
Value
Meaning
DMM_OKAY
Operation successfully completed.
Negative Value
Error code
Example
DMMSetACCapsDelay(0, 0.25); // Set measurement delay to 0.25s
DMMSetACCapsLevel
SMU2060 SMU2064
Description Set the level of the AC voltage source for a peak value during In-Circuit caps.
#include "SMU2060.h"
#include "USBDMMUser.h"
int DMMSetACCapsLevel(int nDmm, double ldVolts)
Remarks This function sets the AC peak voltage level for the In-Circuit Capacitance measurement
function. This value is used on any of the AC Caps calibration and measurement.
Following setting of this function, it is necessary to perform open calibration of the AC
Capacitance ranges to be used. Since the DMM is optimized for the default value, it is
recommended not to use this function, maintaining the default 0.45V peak value.
Parameter
Type/Description
nDmm
int Identifies the DMM. DMMs are numbered starting with zero.
ldVolts
double Peak value of AC voltage to be set. Can be 0.1V to 5.0V
Return Value Integer error code.