Operator`s manual

Signametrics 66
Description ternally calibrate the DMM.
include "SM206032.h"
DMMCalib
Remarks This function p ell
as an extensive self test. At the end of this operation it returns the DMM to the current
operating mode rnal temperature
varies, will enhance the accuracy of the DMM. Using this function does not remove the
quirement to
Parameter
In
#
int rate(int nDmm)
erforms self calibration of the various components of the DMM, as w
. Using this function periodically, or when the DMM inte
re perform periodic external calibration.
Type/Description
nDmm
ith zero.
eturn Value
int Identifies the DMM. DMMs are numbered starting w
R The return value is one of the following constants.
Value Meaning
DMM_OKAY
DMM is OK.
Negativ
xample
e S-Cal command in the
DMMCleanRe
SM2060 ; SM2064 ;
Description Clean specified relay.
#include "SM206032.h"
int DMMCleanRelay(int nDmm, int iRelay, int iCycles)
Remarks This function cleans iRelay by vibrating the contact iCycles times. This function is useful
e relay contacts. DC Current
measurements are particularly sensitive to K2 contact resistance and therefore should be
e is also useful for making sound in computer without a speaker.
Parame
e Value
Error
status = DMMCalibrate(0); /* a quick internal cal.*/
E
Comments This performs an internal DMM calibration and is the same as th
VB Control Panel. It is not related to the external calibration represented in the
SM60CAL.DAT file.
lay
for removing oxides and other deposits from th
cleaned p riodically. It
ter Type/Description
iRelay
int The relay to clean. 1 for K2, 2 for K2 and 3 for K3.