4-38 Agilent 4155B/4156B User’s Guide Vol.2, Edition 5
Making a Measurement
Knob Sweep Measurements
Warning messages
If the CHANNELS or MEASURE screen group have incorrect settings for knob
sweep measurements when starting the knob sweep, a warning message is
displayed, then the STOP and CONT primary softkeys are available.
Select STOP softkey to know the incorrect setting. The setting is highlighted on the
screen.
Select CONT softkey to perform knob sweep measurement with the following
settings:
• If VAR1’ function (FCTN) has been set:
The unit works as CONST channel. The output value is VAR1’ start value.
• If VPULSE or IPULSE mode (MODE) has been set:
The unit works as V or I channel.
• If the power compliance function (POWER COMP) has been set:
The function does not work. Same as POWER COMP = OFF.
Example
The following figure shows an example to set both X axis and Y axis display
regions to positive.
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