S530/S540 KTE Linear Parametric Test Library (LPTLib) User's Manual
Section 3: LPTLib command reference
S530-900-01 Rev. E / September 2017
3-45
measX
This command allows the measurement of voltage, current, charge capacitance, or conductance.
Usage
int measc(int
instr_id
, double *
result
);
int meascg(int
instr_id
, double *
c
, double *g);
int measg(int
instr_id
, double *
result
);
int measi(int
instr_id
, double *
result
);
int measv(int
instr_id
, double *
result
);
c
The variable assigned to the capacitance of the measurement
g
The variable assigned to the conductance of the measurement
Details
After the command is called, all relay matrix connections remain closed, and the sources continue to
generate voltage or current. For this reason, two or more measurements can be made in sequence.
The
range
X
command directly affects the operation of the
meas
X
command. Using the
range
X
command prevents the instrument addressed from automatically changing ranges when the
meas
X
command is called. This can result in an overrange condition such that would occur when measuring
10 V on a 2 V range. An overrange condition returns the value as the result of the measurement.
If used, the
range
X
command must be in the test sequence before the associated
meas
X
command.
All measurements except the
meast
command invoke a timer snapshot measurement to be made by
all enabled timers. This timer snapshot can then be read with the
meast
command.
In general, measurement functions that return multiple results are more efficient than performing
multiple measurement functions. For example, calling a single
meascg
command is faster than calling
the
measc
command followed by the
measg
command.