Section 3: Functions and features
2606B System SourceMeter® Instrument Reference Manual
3-82
2606B-901-01 Rev. B / May 2018
When enabled, you can only turn on the output of the module when the output enable line is pulled
high through a switch to +5 V (as shown). If the lid of the test fixture opens, the switch opens, and the
output enable line goes low, turning the output of the 2606B off. The output will not automatically turn
on when output enable is set high. The output cannot be turned back on until +5 V is applied to the
output enable line.
Figure 76: Using the output enable line
Front-panel control of output enable
To activate the output enable line from the virtual front panel:
1. Press the
CONFIG
key followed by the
OUTPUT ON/OFF
control.
2. Choose
DIO-CONTROL
, then press the
ENTER
key or the navigation wheel .
3. Select
OE_OUTPUT_OFF
to activate the output enable signal causing the source-measure unit
(SMU) output to be blocked if the output enable is not asserted (connected to +5 V). Select
NONE
to deactivate the output enable signal so that its state has no effect on the SMU output.
4. Press the
EXIT (LOCAL)
key as needed to return to the normal display.
Remote control of output enable
Use one of these commands to control output enable action:
smua.source.outputenableaction = smua.OE_NONE
smub.source.outputenableaction = smub.OE_NONE
smua.source.outputenableaction = smua.OE_OUTPUT_OFF
smua.source.outputenableaction = smua.OE_OUTPUT_OFF
When set to
smu
X
.OE_NONE
, the 2606B does not take action when the output enable line is low.
When set to
smu
X
.OE_OUTPUT_OFF
, the instrument will turn its output off as if the
smu
X
.source.output = smu
X
.OUTPUT_OFF
command had been received. The instrument will
not automatically turn its output on when the output enable line returns to the high state. For example,
the following command activates the output enable for SMU A:
smua.source.outputenableaction = smua.OE_OUTPUT_OFF