Agilent 4155B/4156B User’s Guide Vol.2, Edition 5 3-31
Measurement Functions
Operation States
Operation States
The 4155B/4156B has the following four operation states.
•“Idle State”
•“Measurement State”
•“Stress Force State”
•“Standby State”
Idle State
In the idle state, the 4155B/4156B is not doing anything: no measurements, forcing
current or voltage, forcing stress.
An 4155B/4156B is in the idle state after applying power. In this state, output
switches of all the measurement units are on, and all of the units output 0 V. In this
state, you can modify any setting items on the setup screens.
The following are the conditions of each unit and accessories in idle state.
SMU 0 V output at 20 V range, and 100 mA compliance at 100 mA
range
VSU 0 V output at 20 V range
PGU 0 V dc output at 20 V range (output impedance: LOW)
GNDU 0 V output
16441A R-Box 0 W is connected.
16440A selector switching condition is SMU.
Measurement State
In the measurement state, an 4155B/4156B performs sampling or sweep
measurements. The output switches are off for units that do not have entries in the
CHANNELS table of the CHANNELS: CHANNEL DEFINITION screen.
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