Figure - Keithley SourceMeter 2400 User Manual

®
2400 Series SourceMeter User's Manual
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
Event Trig
Event
Trig
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Source-Measure Concepts
:idle
Arm
Layer
Source Delay Measure
Trigger
Layer
See Section 11 for
trigger model details.
S D M
6-11