-SCS Pulse Card (PGU and PMU) User's Manual  Section 3: 
Setting up PMUs and PGUs in Clarius 
 
4200A-PMU-900-01 Rev. B March 2023  3-45 
 
The following 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.