User`s guide

4- 38 Agilent EasyEXPERT User’s Guide Vol. 1, Edition 1

Function Details

Standby Function

This function forces the specified DC bias outputs (standby outputs) before starting

or after stopping a measurement.

Standby Channels

Standby channels are SMU or UHVU that force the standby output. Standby

channels maintain the specified DC bias output when the standby mode is ON and in

the non-measurement state.

Standby channel cannot be set for CMU, GNDU, and SMU connected to the atto

sense and switch unit (ASU) which makes the path to the AUX port.

To specify the measurement resource connected to the selector (N1258A,

N1259A-300, N1265A) or N1266A expander, the channel must be set to the Default

output in the Configuration window.

See “Standby Channel Definition” on page 1-83 to define the standby channels and

set the standby mode.

Standby State

Standby state is the state before starting or after stopping a measurement, in which

only the standby channels perform DC bias outputs. The other channels will be in

the idle state, which is 0 V output, 100 A compliance, SMU filter OFF, and series

resistor OFF. When the standby mode is OFF and in the non-measurement state, all

channels will be in the idle state.

When the B1500 is in the standby state, the measurement trigger stops the standby

state, so the standby channels stop the standby output and the measurement channels

perform a measurement (measurement state). After the measurement, the standby

channels start the standby output (standby state). During this series of operations,

the state is never changed to the idle state. See

Figure 4-20 for an example

operation.

If the bias hold function is enabled for the standby channel, after the measurement,

the channel forces the bias output set by the bias hold function. After the bias hold

period, the channel starts the standby output. During this series of operations, the

state is never changed to the idle state.