Keithley 2651A Reference Manual page 71

Model 2651A High Power System SourceMeter® Instrument Reference Manual
Pulse region specification
Region
(quadrant
diagram)
2
3
4
5
6
7
Configuration guidelines are presented in the following table. Additional information, including
examples on combining SMU channels, can be found in application notes on the
website (http://www.keithley.com).
SourceMeter instrument configuration
Source current using parallel SMUs
SMU 1
2651A-901-01 Rev. A / March 2011
Region Maximum
maximum pulse width
30 A at 10 V 1 ms
20 A at 20 V 1.5 ms
10 A at 40 V 1.5 ms
50 A at 10 V 1 ms
50 A at 20 V 330 μs
50 A at 40 V
300 μs
HI HI
SMU 2
LO LO
Maximum
duty cycle
50%
40%
40%
35%
10%
1%
Guidelines
Maximum Pulsed Signal Levels for Model 2651A:
100 A with 36 V compliance
SMU 1 configuration:
Output-off mode:
smuX.source.offmode = smuX.OUTPUT_NORMAL
Output-off function:
smuX.source.offfunc = smuX.OUTPUT_DCVOLTS
Current limit for normal output-off mode (this is the maximum current
that will flow between the two SMUs when the output is off):
smuX.source.offlimiti = 1e-3 (default)
Voltage compliance must be 10% lower than the voltage compliance
of SMU 2. Therefore this SMU will control the maximum voltage
across the DUT. Voltage compliance limit (maximum):
smuX.trigger.source.limitv = 36
SMU 2 configuration:
Output-off mode:
smuX.source.offmode = smuX.OUTPUT_NORMAL
Output-off function:
smuX.source.offfunc = smuX.OUTPUT_DCAMPS
Normal output-off voltage limit:
smuX.source.offlimitv = 40 (default)
Voltage compliance must be 10% higher than the voltage compliance
of SMU 1. Voltage compliance limit (maximum):
smuX.trigger.source.limitv = 40
Section 2: General operation
Keithley Instruments
2-49