Operator`s manual

Signametrics 98
ires
this is
MMReadCJTemp()
function reads the sensor output voltage (0 to +/-3.3V), and converts it to cold junction
perature usi tion Temp = b + (Vcjs – a)/m. The default values of a,
b and m are designed specifically for the temperarute sensor of the SM40T terminal
block. The valu
thermocouple measurements as well as return at the location pointed to by lpdTemp.
Parame
Remarks Read the cold juncion temperature sensor for subsequent thrermocouple measurements.
When measuring temperature using thermocouples it is necessary to establish a reference
or cold junction temperaturem. This is the temperature at which the themocouple w
are connected to the DMM or to the switching card’s cooper wires. One way to do
by measuring the cold junction sensor using this function. D
tem ng the built in equa
e of the cold junction temperature is saved internally for subsequent
ter Type/Description
nDmm
int Identifies the DMM. DMMs are numbered starting with zero.
lpdTemp
old the temperature.
Return Value u e following constants.
double * Points to the location to h
The return val e is one of th
Value Meaning
DMM_OKAY
Operation successfully terminated
Value
Error code.
;
DMMReadCrestFactor
SM2060  SM2064 ;
Description
#include "SM206032.h"
int DMMReadCrestFactor(int nDmm, double *lpdResult)
Remarks To use this function the DMM must be in ACV measurement function, and a valid range
ust be selected. ocation
pointed to by lpdResult. This measurement is a composite function, utilizing several sub
perform. See the Crest Factor measurement
section of the manual for more detail.
Parameter
Negative
Example DMMReadCJTemp(0, &temp)
Return ACV signal’s Crest Factor.
m A double-precision floating-point Crest Factor is stored in the l
functions, and could take over 10 seconds to
Type/Description
nDmm
int Identifies the DMM. DMMs are numbered starting with zero.
lpdResult
double * Points to the location to hold the Crest Factor.
Ret s one of the following constants.
urn Value The return value i