Specifications

Signametrics 86
Rem counter is not engaged, select it. Make a single frequency measurement,
t double-precision floating-point number in the location
sult. See DMMFrequencyStr() for more details.
Parame
arks If frequency
and store the result as a 64-bi
pointed to by lpdRe
ter
Type/Description
nDmm
fies the DMM. DMMs are numbered starting with zero.
lpdResul
uency.
lue
Value
int Identi
t
double FAR * Points to the location to hold the freq
Return Va The return value is one of the following constants.
Meaning
DMM_OKAY
lly completed.
E_INIT
.
DMM
DMM_C
range.
Example double d;
int status = DMMReadFrequency(0, &d);
DMMRea ySt
SMX2040  SMX2042 ; SMX2044 ;
Description the DMM.
#include "sm204032.h"
equencyStr(int nDmm, LPSTR lpszFrequency)
ated string
.
Operation successfu
DMM_
DMM is uninitialized. Must be initialize prior to using any function
DMM_E_
Invalid DMM number.
NT_RNG
Frequency counter is over or under
dFrequenc r
Return the next string containing frequency reading from
DMMReadFr
int
Remarks This is the string version of DMMReadFrequency(). It returnes a form
containing the measured frequency. For more details read about
DMMReqadFrequency()
Parameter
Type/Description
nDmm
lpszFreq
Return Value
Value
int Identifies the DMM. DMMs are numbered starting with zero.
uency
LPSTR Points to the location which holds the formatted reading
string. Allow minimum of 64.
The return value is one of the following constants.
Meaning
DMM_OKAY
Op mpleted.
ue
Er
Example char buffer[64];
int status = DMMReadFrequencyStr(0, buffer);
eration successfully co
Negative val
ror code
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com