Table Of Contents

VCSEL Configure Sweep Setting VI

Last Modified: January 12, 2021

Configures a pulse during a sweep for I-V measurements.

session handle in specifies a VCSEL session.

pulse settings specifies pulse settings for the sweep.

pulse polarity specifies the polarity of the pulse.

amplitude (A) specifies the magnitude of the pulse current level.

start specifies the current at which to start the sweep.

end specifies the current at which to stop the sweep.

sweep type specifies the method of calculating the interval between start and end.

linear specifies that the number of sweep points is equal to step.
log specifies that the number of sweep points is equal to the logarithm of step.

step specifies the spacing between two current points during the sweep.

points per decade specifies the number of sweep points per decade. Sweep points are evenly spaced on the logarithmic scale.

pulse information specifies the pulse information.

pulse on time (s) specifies the period of time when a single pulse maintains high voltage level. The valid range of pulse on time (s) is 5 ns to 10 μs.

pulse duty cycle (%) specifies the ratio of pulse on time (s) to the total period of a pulse waveform in percentage.

pulse count specifies the number of pulses generated for each group of pulse settings.

error in describes error conditions that occur before this node runs. This input provides standard error in functionality.

session handle out returns the VCSEL session.

sweep pulse array returns an array of pulse setting data during the sweep.

amplitude (A) returns the magnitude of the pulse current level.

pulse on time (s) returns the period of time when a single pulse maintains high voltage level.

pulse duty cycle (%) returns the ratio of pulse on time (s) to the total period of a pulse waveform in percentage.

pulse polarity returns the polarity of the pulse.

pulse count returns the number of pulses generated for each group of pulse settings.

channel index returns the identifier of the channel under test.

error out contains error information. This output provides standard error out functionality.

Example

Refer to VCSEL I-V Measurement.lvproj in the labview\examples\VCSEL I-V Test\VCSEL I-V Measurement directory to learn how to use the VCSEL Configure Sweep Setting VI.


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