Operator`s manual

97 Signametrics
Negative Value
Error code.
Example 5);
Description
Remarks
is compared by the comparator to the AC coupled input voltage. This
ction is asso wing functions: Totalizer, Frequency counter, Period,
se width and rements. ldThreshold range is determined by the
selected ACV r d
range of ldThre tails.
ter
DMMSetCJTemp(0, 22.
DMMSetCompThreshold
SM2040  SM2042 ; SM2044 ;
Set the Threshold DAC level.
#include "sm204032.h"
#include "UserDMM.h"
int DMMSetCompThreshold(int nDmm, double ldThreshold)
This Secondary function sets the output of the Threshold DAC. To use this function, the
DMM must be in AC volts. This function sets the detection threshold of the AC
comparator. It
fun
Pul
ciated with the follo
Duty Cycle measu
ange. For instance, when the 250 V AC range is selected, the allowe
shold is –500 V to +500 V. See the specification section for more de
Parame Type/Description
nDmm
entifies the DMM. DMMs are numbered starting with zero.
hold
le DC voltage to be set. Allowed range depends on selected
Return Value rr
Value
int Id
ldThres
doub
ACV range.
Integer e or code.
Meaning
DMM_O
Negativ
xa
reshold(0,28.5); // Set comp. threshold to 28.5V
etCoun
; M2044 ;
Description et the frequency counter to a specific range.
#include "sm204032.h"
Remarks This function forces the auto-ranging frequency counter to a specific range, fRange. Use
function if quency to be measured is known. It will eliminate the
time necessary for the counter to autorange to the appropriate range. It saves time by
removing the re w
the counter to range. All ranges are defind in UserDMM.h file.
KAY
Operation successfully completed.
e Value
Error code
E mple
DMMSetCompTh
DMMS terRng
SM2040  SM2042 S
S
#include "UserDMM.h"
int DMMSetCounterRng(int nDmm, int fRange)
this the approximate fre
quirement to make multiple frequency measurements in order to allo