5: Pulse measure and pulse generator units Model 4200A-SCS Parameter Analyzer
5-52 4200A-901-01 Rev. C / February 2017
The next figure shows a family of curves from a fairly high powered device with the load-line effect.
The following figure shows the same device tested with load-line effect compensation enabled. With
LLEC enabled, the curves stop at the programmed V
d
= 12 V. Note that the top curve, in the red
circle, did not reach the 12 V setting. This is because the PMU 40 V source range reached source
compliance. In this case, the PMU is at its limit and cannot source any more voltage or current to this
particular resistance. See the 4200A-SCS Parameter Analyzer Datasheet for more information on the
PMU maximum source power versus device resistance. You can access the datasheet from the
Learning Center.
Figure 186: Vd-Id family of curves, showing load-line effect (LLEC disabled)
Figure 187: Vd-Id family of curves with LLEC enabled (every curve finishes at Vd = 12 V)
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