User`s guide

Agilent 4155C/4156C User’s Guide Vol.2, Edition 6 2-7
Knob Sweep Measurements
Measurement Functions
Sweep Step Value
For the VAR1 channel, you do not set the step value. You can consider the step value
to be the amount you rotate the knob. Then, the sweep is performed for the specified
number of steps. The STEP field on the MEASURE: SWEEP SETUP screen has no
meaning.
Initial value: 0, Step value automatically set: 0 to VAR1 range/number of steps.
Number of Steps
For the VAR1 channel, you set the number of steps on the KNOB SWEEP screen.
So, for the knob sweep function, the number of steps for VAR1 has no relation to the
NO OF STEP setting on the MEASURE: SWEEP SETUP screen.
Start Value
The start value is always 0, and does not depend on the polarity. You cannot set the
start value. So, the START setting on the MEASURE: SWEEP SETUP screen has
no meaning for the knob sweep function.
Stop Value
Stop value is always step value × number of steps. You cannot set the stop value.
The measurement is continuously repeated from 0 to the stop value until the
Stop
front-panel key is pressed or the KNOB SWEEP screen is changed to another
screen.
Measurement Range
If SMU is the measurement channel:
Compliance range is used. That is, the measurement range is set to the lowest range
that includes the compliance value that is set on the MEASURE: SWEEP SETUP
screen.
If VMU is the measurement channel:
20 V range is used for the grounded measurement mode, and the 2 V range is used
for the differential measurement mode.