Vtex1629_Set_Half_Bridge_Lead_Wire_Desensitization - VTI Instruments EX1629 User Manual

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vtex1629_set_half_bridge_lead_wire_desensitization

F P
UNCTION ROTOTYPE
ViStatus vtex1629_set_half_bridge_lead_wire_desensitization (ViSession vi, ViInt32 channelsArraySize, ViInt32
_VI_FAR channels[], ViReal64 _VI_FAR factor[]);
F P
UNCTION ARAMETERS
vi = contains a session handle to the instrument. This handle is obtained by the function and remains valid until the
session is closed.
channelsArraySize = the size of the channel[] array. Valid input values: VTEX1629_MIN_SCANLIST_LENGTH
(1) to VTEX1629_MAX_SCANLIST_LENGTH (48).
channel[] = an integer input array that specifies the channels to which the factor parameter will apply. Valid input
values: 0 to 47.
factor = an input array of values which set the desensitization error for the channels indicated in the channels[]
array. Valid input values are number greater than 1.
D I R V
ATA TEM ESET ALUE
factor = 1
D
ESCRIPTION
This function sets the lead wire desensitization factor for a given list of channels. The factor parameter is defined as
follows:
where R represents the resistance of the lead and R
lead
NOTE Early EX1629s do not have hardware which supports this functionality. Implementation of direct
lead wire measurement is not possible on first generation units.
E
XAMPLE
ViSession instrumentHandle;
ViStatus status;
ViInt32 channelsArraySize = MAX_CHANNELS;
ViInt32 channels[MAX_CHANNELS];
ViReal64 factor[MAX_CHANNELS];
ViInt32 i = 0;
for(i = 0; i < channelsArraySize; i++) {
channels[i] = i;
}
status = vtex1629_set_half_bridge_lead_wire_desensitization(vi,
260
R
lead
factor 1
R
gage
is the resistance of the strain gage.
gage
channelsArraySize,
channels,
factor);
EX1629 Command Set