Keithley 2657A User Manual

Section 7: TSP command reference Model 2657A High Power System SourceMeter® Instrument Reference Manual
7-218 2657A-901-01 Rev. B/December 2012
Details
This attribute configures the output level of the voltage or current source.
If the source is configured as a voltage source and the output is on, the new smuX.source.levelv setting is
sourced immediately. If the output is off or the source is configured as a current source, the voltage level is
sourced when the source is configured as a voltage source and the output is turned on.
If the source is configured as a current source and the output is on, the new smuX.source.leveli setting is
sourced immediately. If the output is off or the source is configured as a voltage source, the current level is
sourced when the source is configured as a current source and the output is turned on.
The sign of sourceLevel dictates the polarity of the source. Positive values generate positive voltage or current
from the high terminal of the source relative to the low terminal. Negative values generate negative voltage or
current from the high terminal of the source relative to the low terminal.
The reset() function sets the source levels to 0 V and 0 A.
Example
smua.source.levelv = 1
Sets voltage source of SMU
channel A to 1 V.
Also see
smuX.source.compliance (on page 7-214)
smuX.source.func
(on page 7-216)
smuX.source.output
(on page 7-222)
Source-measure concepts
(on page 4-1)
smuX.source.limitY
This attribute sets compliance limits.
Type TSP-Link accessible Affected by Where saved Default value
Attribute (RW) Yes SMU reset
Instrument reset
Recall setup
Saved setup Limit voltage: 20 (20 V)
Limit current: 1e-3 (1 mA)
Limit power: 0 (disabled)
Usage
limit = smuX.source.limitY
smuX.source.limitY = limit
limit
The compliance limit value; set to one of the following values:
Voltage compliance: 0 V to 3030 V
Current compliance: 0 A to 121.2 mA
Power compliance: 0 W (minimum); specifying a 0 disables power limit
X
Source-measure unit (SMU) channel (for example, smua.source.limitv applies to SMU
channel A)
Y
SMU function (v = voltage, i = current, p = power)

Keithley 2657A Specifications

General

Brand	Keithley
Model	2657A
Category	Measuring Instruments
Language	English