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
μ
s
10%
7
50 A at 40 V
300
μ
s
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
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:
smu
X
.source.offmode = smu
X
.OUTPUT_NORMAL
Output-off function:
smu
X
.source.offfunc = smu
X
.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):
smu
X
.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):
smu
X
.trigger.source.limitv = 36
SMU 2 configuration:
Output-off mode:
smu
X
.source.offmode = smu
X
.OUTPUT_NORMAL
Output-off function:
smu
X
.source.offfunc = smu
X
.OUTPUT_DCAMPS
Normal output-off voltage limit:
smu
X
.source.offlimitv = 40
(default)
Voltage compliance must be 10% higher than the voltage compliance
of SMU 1. Voltage compliance limit (maximum):
smu
X
.trigger.source.limitv = 40
