Operator`s manual

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Table Of Contents

Signametrics 112

Remarks This function makes a single resistance reading. The funciton uses the value of C to help

measure the resistance in series with it. If C is unknown enter 0.0 for C. The

measurement result is stored as double-precision floating-point numbers in the location

pointed to by lpdR. The DMM must be set to the ESR function during this operation. It

assumes that an DMMOpenCalACCaps() was performed prior to using this funciton.

Note: Avilable with DLL Version 1.52 and higher.

Parameter

Type/Description

nDmm

int Identifies the DMM. DMMs are numbered starting with zero.

double Phas the nominal value of the capacior. Can be set to a value

between 0 and 1uF (1.0e-6).

lpdDcy

double * Points to the location which holds the duty cycle.

Return Value The return value is one of the following constants.

Value

Meaning

DMM_OKAY

Operation successfully completed.

Negative Value

Error code

Example

double R;

DMMReadSR(0, 47e-9, &R); // Read the resistor in series with

47nF

DMMReadFrequency

SMU2060  SMU2064 

Description Return the next double floating-point frequency reading from the DMM.

#include "SMU2060.h"

int DMMReadFrequency(int nDmm, double *lpdResult)

Remarks This is function, that is the DMM must be in ACV measurement function, and a valid

range must be selected for proper operation. If the frequency counter is not engaged,

select it. Make a single frequency measurement, and store the result as a 64-bit double-

precision floating-point number in the location pointed to by lpdResult. See

DMMFrequencyStr() for more details. In cases where the of frequency being measured

is approximately known, use DMMSetCounterRng to select the appropriate range. This

will eliminate the self ranging of the counter, resulting in a single measurement to

acquire the frequency.