Model 2601B-PULSE System SourceMeter Instrument Reference Manual Section 4: Sourcing and measuring
2601B-PULSE-901-01A April 2020 4-27
To configure the output-off mode from the front panel:
1. Press the CONFIG key.
2. Press the OUTPUT ON/OFF control.
3. Select OFF-STATE.
4. Select MODE.
5. Select the output-off mode: HI-Z (high-impedance), NORMAL, or ZERO.
6. Press the EXIT key to return to the normal display.
To select the normal output-off mode over a remote interface:
smua.source.offmode = smua.OUTPUT_NORMAL
To select the high-impedance output-off mode over a remote interface:
smua.source.offmode = smua.OUTPUT_HIGH_Z
To select the zero output-off mode over a remote interface:
smua.source.offmode = smua.OUTPUT_ZERO
Output-off function
This setting is used only when the output is turned off and the 2601B-PULSE is in set to the normal
output-off mode (smua.source.offmode = smua.OUTPUT_NORMAL).
You can set the output-off function to CURRENT or VOLTAGE through the CONFIG menu on the
front panel, or by using the smua.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
(smua.source.offfunc = smua.OUTPUT_DCVOLTS):
• The source-measure unit (SMU) sources 0 V.
• The current limit is set by the smua.source.offlimiti attribute (default 1 mA).
When the output is turned off and the selected output-off function is CURRENT
(smua.source.offfunc = smua.OUTPUT_DCAMPS):
• The SMU sources 0 A.
• The voltage limit is set by the smua.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 insignificant.
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