Specifications

Signametrics 114
DMMTrig
SMX2040 ; SMX2042 ; SMX2044
Description Software Trigg
#include "sm2
nt DMMTrigg
akes iSamples readings at
them in an internal buffer. Rate can
be set between 10 t ngs per second. No autoranging is allowed for this
trigger operatio the time the DMMTrigger command is issued and the time
s read, no ot mand should be sent to the DMM. Use the DMMReady
to mon DMM is ready (ready implies completion of iSamples).
, you can opt ly read a single reading or up to iSamples, using
adBuf
Parame
ger
;
er the DMM. Take iSamples.
04032.h"
i
er(int nDmm, int iSamples)
Remarks Following reception of this command, the SMX2040 DMM m
the currently set function, range and rate, and stores
o 1000 readi
n. Between
the buffer i
function
her com
itor when the
When ready
DMMRe
ional
fer.
ter
Type/Description
nDmm
int Identifies the DMM. DMMs are numbered starting with zero.
int The number of samples the DMM takes following a trigger pulse.
d 64, inclusive.
Return Value the following constants.
iSamples
This number must be between 1 an
The return value is one of
Value
Meaning
DMM_
DMM_E
DMM is uninitialized. Must be initialize prior to using any function.
DMM_TRIG_N
Measurement count is out of allowed range.
MM
Example double Buff
int state;
Trigger(
fer[i]);
DMMWid r
SMX20 40  SM 0 44 ;
Description ositive ulse width in string format.
int DMMWidthStr(int nDmm, LPSTR lpszPos, LPSTR lpszNeg)
Remarks This Secondary function is the string equivalent of DMMReadWidth. The
measurement results are stored at the location pointed to by lpszPos and lpszNeg. See
DMMReadWidth for more details.
OKAY
Operation successfully terminated.
_INIT
DMM_E_D
Invalid DMM number.
er[64];
DMM
while( ! DMMReady(0));
0,64);
for(i=0; i < 64 ; i++)
state = DMMReadBuffer(0, &Buf
thSt
X20 42 ; SMX2
Return p and negative p
#include "sm204032.h"
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