1-Tone Measurement Panel: General

Run Controller

Single: the measurement is triggered once and *.imx file is saved
Continuous: the measurement is triggered in continous mode until it's set to pause () or stop () by the user.

Measurement File

Browse and save the measurement file in a folder using

. If empty, IQSTAR pops up a browser at the end of the measurement in order to save the data

Note: 'Append' feature allows to add new measurement data at the end of an existing file.

Note: Click on

, is it possible to choose output file format : "Measurement Files (*.imx)", "Unencryped Measurement Files (*.im)", "MDIF Files (*.mdf)", "CITI Files (*.cti)" or "CSV Files (*.csv)".

Note: Each extension setting can be defined using

:

for *.im or *.imx files, the interface is the following : IM Export
for *.csv files, check CSV Export
for *.mdf files, check MDIF Export

Information:

These information (Meta-datas) fields will be used by the visualisation and analysis tools in order to filter, sort data or to provide labels, titles or legends. The information entered here is saved in the header of the output file. To learn more see IQSTAR Measurement Files

DC Control

'DUT reference plane' allows to optimize the DC value at the DUT reference plane through an optimization. A feedback is applied between the measurement unit and the power supply in order to have a constant fixed value at the DUT reference plane.

DC Measurements

This section is used to define the DC components to be measured. This feature is useful to reduce the measurement time. Each IV measurement devices will appear in the lists, allowing to choose if the voltage, the current, both or none should be measured during the sweeps. If unchecked, the value measured from the DUT biasing will be used and written in the file to replace the empty slots.

Note: For example, the DUT is biased with Vgate = -3V and Igate = 10uA, Vdrain = 30V and Idrain = 150mA. Only the drain voltage and current needs to be monitored so only Vdrain, Idrain are checked. In the output file, all the Vgate will equal to -3V, all Igate to 10uA but Vdrain and Idrain will be measured at each sweep point.

DC Screenshot

This section is used to define the IV screenshot to be measured. This feature is useful to plot and save the pulsed current/voltage waveform shape. Each IV measurement devices will appear in the lists, allowing to choose if the voltage waveform, the current waveform, both or none should be measured during the sweeps. This feature is doable only if the instruments allowed this capability. (mainly Oscilloscope or Digital Multimeter are supported). This feature will automatically create a new Graph 2D called "IV screenshot".

Note: IV screenshot window size is related to the "Trace Definition" setting of Chronograms. IV screenshot feature can slow down measurement process in function of instruments used.

Thermal measurement

This section is used to define the thermal measurements in parallel to the RF measurements. If some of the sensors are checked, the temperature values will be saved for each measurement point, allowing the visualization of the temperature during the sweeps.

Pressure measurement

This section is used to define the pressure measurements in parallel to the RF measurements. If some of the sensors are checked, the pressure values will be saved for each measurement point, allowing the visualization of the pressure during the sweeps.

Power measurement (Power Meter Matrix)

This section is used to define the power measurements in parallel to the RF measurements. This power measurements are not related to the input or output or reflection power meters, but only to the power meter matrix.

Stop Conditions

Select one or more conditions to stop a power sweep and switch to another:

Current maximum: using set the current limit not to exceed
Note: It is also possible to create an expression in order to define a custom figure of merit (e.g. sum of two currents).
Pdiss: set the limit of DC power consumption of the DUT
Pout max: set the limit of output power of the DUT
Gain compression: using set the limit in gain compression (Transducer or Power gain) if the reference is the maximum gain or the linear part (it's also possible to average the linear part by setting point count) and finally set the level in dB
PAE compression: set the limit of PAE compression in points
|Gamma In|>=1: select this condition to stop the power sweep when the gamma in is out of the Smith Chart
Note: Useful when the DUT is not unconditionally stable.
Spurious level: set the limit of spurious level relative to the carrier (taken as being the generated frequency). If one spurious is detect with a level higher than this defined limit, measurement is stopped.

Post actions

RF Stress: RF & IV states keep ON at the end of a sweep: used to keep the RF and IV on after the end of a sweep, allowing the DUT to stay biased and under stimulus.
Note: This option can be used to stress the DUT and see how the performances are affected in time. By shutting down the bench, the RF and IV will be automatically forced off.

Viewers

Allows to define a specific Real time viewer profile when new measurement is started. (useful during a Sweep Plan).