Operator`s manual

Table Of Contents
Signametrics 82
DMMGetdB
SMU2060 SMU2064
Description Get dB deviation from the reading at the time relative was activated.
#include "SMU2060.h"
int DMMGetdB(int nDmm, double *lpdDev)
Remarks This function returns a double floating value that is the dB deviation relative to the
reading made just before the relative function was activated. This function is useful in
determining measurement errors in dB. It can be used for bandwidth measurements or
DC evaluation.
Parameter
Type/Description
nDmm
int Identifies the DMM. DMMs are numbered starting with zero.
lpdDev
double * Pointer where the dB value is to be saved.
Return Value Integer error code..
Value
Meaning
DMM_OKAY
Operation successfully completed.
Negative Value
Error code
Example double dB; int status = DMMGetdB(0, &dB);
DMMGetdBStr
SMU2060 SMU2064
Description Get dB deviation from the reading at the time relative was activated.
#include "SMU2060.h"
int DMMGetdBStr(int nDmm, LPCSTR lpszDB)
Remarks This function is the same as the DMMGetdB(), with the exception that it returns a string.
See DMMGetdB() for more details.
Parameter
Type/Description
nDmm
int Identifies the DMM. DMMs are numbered starting with zero.
lpszDB
LPCSTR Points to a buffer (at least 64 characters long) to hold the
result. The return value will consist of a leading sign a floating-point,
and a ‘dB’ units specifier