Keithley 2651A Reference Manual

Model 2651A High Power System SourceMeter® Instrument Reference Manual Section 2: General operation
2651A-901-01 Rev. A / March 2011 2-49
Pulse region specification
Region
(quadrant
diagram)
Region
maximum
Maximum
pulse width
Maximum
duty cycle
2 30 A at 10 V 1 ms 50%
3 20 A at 20 V 1.5 ms 40%
4 10 A at 40 V 1.5 ms 40%
5 50 A at 10 V 1 ms 35%
6 50 A at 20 V
330 μs
10%
7 50 A at 40 V
300 μs
1%
Configuration guidelines are presented in the following table. Additional information, including
examples on combining SMU channels, can be found in application notes on the Keithley Instruments
website (http://www.keithley.com).
SourceMeter instrument configuration Guidelines
Source current using parallel SMUs
SMU 1 SMU 2
HI
LO
HI
LO
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

Keithley 2651A Specifications

General

Brand	Keithley
Model	2651A
Category	Measuring Instruments
Language	English