Section 2: General operation
2606B System SourceMeter® Instrument Reference Manual
2-36
2606B-901-01 Rev. B / May 2018
Virtual front-panel limit
To set the limit from the virtual front panel:
1. Select the
LIMIT
key for the channel.
2. Select
CURRENT
,
VOLTAGE
, or
POWER
as needed.
3. Select the
ENTER
key.
4. Use the navigation wheel to set the new value.
5. Press the
ENTER
key.
6. Press the
EXIT (LOCAL)
key to return to the main display.
Remote limit
The table below summarizes basic commands to program a limit. For a more complete description of
these commands, refer to the
(on page 7-1).
Limit commands
Command
Description
smu
X
.source.limiti = limit
Set current limit.
smu
X
.source.limitv = limit
Set voltage limit.
smu
X
.source.limitp = limit
Set power limit.
compliance = smu
X
.source.compliance
Test if in limit (
true
= in limit;
false
= not in limit).
To set the limit, send the command with the limit value as the parameter. The following programming
example illustrates how to set the current, voltage, and power limit to 50 mA, 4 V, and 1 W
respectively:
smua.source.limiti = 50e-3
smua.source.limitv = 4
smua.source.limitp = 1
The following programming example illustrates how to print the limit state:
print(smua.source.compliance)
A returned value of
true
indicates one of three things:
•
If the instrument is configured as a current source, the voltage limit has been reached
•
If the instrument is configured as a voltage source, the current limit has been reached