Model 4200A-SCS Source-Measure Unit (SMU) User's Manual
Section 5: Source-measure concepts
4200A-SMU-900-01 Rev. A December 2020
5-23
The timing elements act as follows:
•
Hold Time (HT):
The sweep graph shows two sweeps that correspond to the two steps shown
directly above in the step graph. There is a hold time at the start of each sweep. The hold time is
a global setting, so it is the same for all SMUs in the test system.
•
Delay (D):
The delay time allows the source to settle and is dependent on the measurement
range. All SMUs in the test system are synchronized, so the delay time applied by the most
delayed SMU is the delay time applied by all SMUs.
•
Sweep Delay (SD):
The sweep delay provides additional settling time for each step in the sweep.
It is a global setting that is applied identically to all SMUs in the test system.
•
Measure Time (MT):
The measure time is determined by the filter factor and the A/D aperture
time. All SMUs in the test system are synchronized, so the measure time for the SMU that
requires the longest measure time is the same for all SMUs in the test system.
Sampling mode timing
The following figure shows a timing diagram for the Sampling test mode.
Figure 96: Sampling test mode timing diagram
