3: Source-measure hardware Model 4200A-SCS Parameter Analyzer
3-8 4200A-901-01 Rev. C / February 2017
V-Source operating boundaries
The next two figures show the operating boundaries for the voltage source. Only the first quadrant of
operation is covered; operation in the other three quadrants is similar.
As shown in the next figure, the 4200-SMU can output up to 21 V at 105 mA, or 210 V at 10.5 mA.
The 4210-SMU can output up to 21 V at 1.05 mA, or 210 V at 1.5 mA.
Figure 37: V-Source operating boundaries
The next figure shows the limit lines for the voltage source. The voltage source limit line represents
the maximum source value possible for the selected voltage source range. For example, the voltage
source limit line is at 21 V for the 20 V source range. The current compliance limit line represents the
actual compliance in effect. These limit lines are boundaries that represent the operating limits of the
SMU for this quadrant of operation. The operating point can be anywhere inside (or on) these limit
lines. The limit line boundaries for the other quadrants are similar.
Figure 38: 4200-SMU and 4210-SMU V-Source limit lines
V-Source operation examples
The next figures show operation examples for resistive loads that are 20 kΩ and 8 kΩ, respectively.
For these examples, the SMU is programmed to source 50 V and limit 5 mA. The SMU is sourcing
50 V to the 20 kΩ load and subsequently measures 2.5 mA, which is within the 5 mA programmed
current limit.
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