2400 Series SourceMeter
®
User’s Manual Source-Measure Concepts 6-11
The manually set delay (up to 9999.999 sec) is available to compensate for longer settling
required by external circuitry. The more capacitance seen at the output, the more settling
time is required for the source. The actual delay period needed can be calculated or deter-
mined by trial and error. For purely resistive loads and at higher current levels, the pro-
grammable delay can be set to 0msec.
The measure time depends on the selected measurement speed. For example, if speed is
set at 0.01 PLC (power line cycles), the measure time would be 167µsec for 60Hz opera-
tion (0.01/60).
Figure 6-2
Simplified trigger model
Arm
Layer
Trigger
Layer
Event
Event
:idle
Trig
Trig
S
D
M
Source
Delay
Measure
See Section 11 for
trigger model details.
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