2606B System SourceMeter® Instrument Reference Manual
Section 2: General operation
2606B-901-01 Rev. B / May 2018
2-67
To select the normal output-off mode over a remote interface:
Channel A:
smua.source.offmode = smua.OUTPUT_NORMAL
Channel B:
smub.source.offmode = smub.OUTPUT_NORMAL
To select the high-impedance output-off mode over a remote interface:
Channel A:
smua.source.offmode = smua.OUTPUT_HIGH_Z
Channel B:
smub.source.offmode = smub.OUTPUT_HIGH_Z
To select the zero output-off mode over a remote interface:
Channel A:
smua.source.offmode = smua.OUTPUT_ZERO
Channel B:
smub.source.offmode = smub.OUTPUT_ZERO
Output-off function
This setting is used only when the when output is turned off and the 2606B is in NORMAL output-off
mode (
smu
X
.source.offmode = smu
X
.OUTPUT_NORMAL
).
When the 2606B is in NORMAL output-off mode, you can set the output-off function to CURRENT or
VOLTAGE through the CONFIG menu on the virtual front panel, or by using the
smu
X
.source.offfunc
attribute from a remote interface. VOLTAGE is the default output-off
function.
When the output is turned off and the selected output-off function is VOLTAGE
(
smu
X
.source.offfunc = smu
X
.OUTPUT_DCVOLTS
):
•
The source-measure unit (SMU) sources 0 V.
•
The current limit is set by the
smu
X
.source.offlimiti
attribute (default 1 mA).
When the output is turned off and the selected output-off function is CURRENT
(
smu
X
.source.offfunc = smu
X
.OUTPUT_DCAMPS
):
•
The SMU sources 0 A.
•
The voltage limit is set by the
smu
X
.source.offlimitv
attribute (default 40 V).
When the output-off function is set to either voltage or current, the SMU may source or sink a very
small amount of power. In most cases, this source or sink power level is not significant.
Selecting the output-off function
This setting is used only when the when output is turned off and the source-measure unit (SMU) is in
NORMAL output-off mode.
To configure the output-off function from the virtual front panel:
1. Press the
CONFIG
key.
2. Press the
OUTPUT ON/OFF
control.
3. Select
OFF-STATE
and then select
FUNCTION
.
4. Select
CURRENT
or
VOLTAGE
.
5. Press the
EXIT
key to return to the normal display.