Keithley 2600B User Manual

Series 2600B
System SourceMeter® Instrument Reference Manual Section 2:
General operation
2600BS-901-01 Rev. C / August 2016 2-29
Setting the limit
Front-panel limit
Set the limit from the front panel as follows:
1. For the Model 2601B/2611B/2635B or the Model 2602B/2604B/2612B/2614B/2634B/2636B
single-channel display mode, press the LIMIT key to directly access limit editing. Pressing the
LIMIT key while in limit edit mode will toggle the display between the complementary function limit
and the power limit display.
2. For the Model 2602B/2604B/2612B/2614B/2634B/2636B, dual-channel display mode, press the
LIMIT
key, then select CURRENT, VOLTAGE, or POWER as needed. Press the ENTER key or
the navigation wheel
.
3. Press the navigation wheel
and set the limit to the new value.
4. Press the ENTER key or the navigation wheel
to complete editing.
5. 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 TSP command reference (on page 7-1
).
Limit commands
Command* Description
smuX.source.limiti = limit
Set current limit.
smuX.source.limitv = limit
Set voltage limit.
smuX.source.limitp = limit
Set power limit.
compliance = smuX.source.compliance
Test if in limit (true = in limit; false =
not in limit).
* smuX: For Models 2601B, 2611B, and 2635B, this value is smua (SMU Channel A); for Models 2602B,
2604B, 2612B, 2614B, 2634B, and 2636B, this value can be smua (for SMU Channel A) or smub (for
SMU Channel B).
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

Keithley 2600B Specifications

General

Brand	Keithley
Model	2600B
Category	Measuring Instruments
Language	English