In this section:
Current Pulse and Square Wave .............................................. 5-1
Current Pulse and Square Wave
In the Current Pulse and Square Wave test, the SMU galvanostat supplies a series of up to 100,000
current pulses. At the end of each pulse, the SourceMeter measures the resulting potential. You can
select both the peak and base levels of the pulses, as well as the period, pulse width, and sample
time.
Various parameters of the pulse wave are displayed in the figure below. Though not pictured, there is
also a brief latency period between the end of the measurement and the end of the pulse to allow the
instrument’s analog-to-digital converter to finish processing the reading.
Figure 83: Current versus Time
To ensure proper instrument operation, the potential difference between the reference electrode
(RE) and counter electrode (CE) terminals and between the working electrode (WE) and working
electrode sense (WES) terminals should not exceed 5 V.
Section 5
Current Pulse and Square Wave
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