Agilent 4155B/4156B User’s Guide Vol.2, Edition 5 3-25
Measurement Functions
Knob Sweep Function
CONST SETUP Softkey
This softkey displays the secondary softkeys for setting the constant voltage source
parameter or the constant current source parameters. Secondary softkeys for PGUs
set to V mode are also displayed.
If CONST is not set for any channel on the CHANNELS: CHANNEL
DEFINITION screen, this softkey is not displayed.
If more than six constant channels are defined, press the MORE softkey to display
softkeys for the other constant channels.
Secondary softkeys
The first line of each secondary softkey displays the variable name of the constant
source. The second line displays source output value. For SMUs, the third line
displays compliance value. For other units, the third line is blank.
• Example. If an SMU is set as follows, the following softkey appears:
Vce
5.00V
10.0mA
• Voltage source mode.
• Variable name (VNAME): "Vce".
• Output voltage value: 5.0 V.
• Compliance value: 10 mA.
• source output value
Pressing the secondary softkey displays the source output value in the data entry
area. You can change the value by using the rotary knob, numeric keys, or arrow
keys in the Edit key group.
• compliance value (only for SMU)
Pressing the secondary softkey twice displays the compliance value in the data
entry area. You can change the compliance value by using the rotary knob,
numeric keys, or arrow keys in the Edit key group.
• setting range
Each setting range depends on the measurement unit. See Chapter 1.
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