User`s guide

2-12 Agilent 4155C/4156C User’s Guide Vol.2, Edition 6
Knob Sweep Measurements
Executing Measurements
To Execute Measurements
1. Press the green key, then Single front-panel key. The KNOB SWEEP screen is
displayed, and knob sweep measurement starts.
During measurements, self-test, or forcing stress, this operation is ignored.
If you want to change the Y-axis parameter, press
Stop front-panel key and
Y-AXIS ASSIGN primary softkey. Then select a secondary softkey for the
Y-axis parameter you want.
To start knob sweep measurement again, press
Single front-panel key only.
2. Rotate the rotary knob to stretch or shrink the sweep range. Knob sweep
measurement is executed, and measurement curve appears on the graph.
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 for the VAR1 or VAR2 unit:
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.