Specifications

Signametrics 90
Description Return the next double floating-point period reading from the DMM.
#include "sm204032.h"
int DMMReadPeriod(int nDmm, double FAR *lpdResult)
Rem rks This is a Secondary function and the DMM must be in ACV measurement function, and
t as a
t. See
quencyStr() for more details.
a
a valid range must be set It makes a single period measurement, and stores the resul
double-precision floating-point number in the location pointed to by lpdResul
DMMFre
Parameter
Type/Description
nDmm
g with zero.
lpdResul
R * Points to the location which holds the period.
ants.
Value
int Identifies the DMM. DMMs are numbered startin
t
double FA
Return Value The return value is one of the following const
Meaning
DMM_OKAY
lly completed.
ue
DMM_C
Example
double d;
int status;
= DM iod(0, &d);
SMX2040 ; SMX2042 ; SMX2044 ;
Description Return the next reading from the DMM formatted for printing.
#include "sm204032.h"
int DMMReadStr(int nDmm, LPSTR lpszReading)
Remarks This function is the string version of DMMRead(). It reads the next Primary
measurement result, performs all scaling and conversion required, and returns the result
as a string formatted for printing. The print format is determined by the range and
function. See DMMRead() for more details.
Parameter
Operation successfu
Negative Val
Error code
NT_RNG
Period measurement hardware is over or under range.
status MReadPer
DMMReadStr
Type/Description
nDmm
int Identifies the DMM. DMMs are numbered starting with zero.
lpszReading
LPSTR Points to a buffer (at least 16 characters long) to hold the
converted result. The return value will consist of a leading sign, a
floating-point value in exponential notation, and a units specifier.
Return Value The return value is one of the following constants, or the string length is OK.
Value
Meaning
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