Section 4: Sourcing and measuring Model 2601B-PULSE System SourceMeter Instrument Reference Manual
4-34 2601B-PULSE-901-01A April 2020
• Some SMU settings are ignored; see Settings ignored when the pulser is enabled (on page 4-36)
for details.
• The smua.trigger.source.pulsewidth and smua.pulser.measure.delay attributes
provide more precise timing than you can achieve using the
smua.trigger.endpulse.stimulus and smua.trigger.measure.stimulus attributes.
• Some of the output-off modes behave differently:
â–ª OUTPUT_NORMAL: The output circuit is shorted when this output-off mode is selected.
â–ª OUTPUT_ZERO: The output circuit is shorted and measurements cannot be made when this
output-off mode is selected.
• You cannot use contact check.
• You cannot make measurements when the output is off.
• Compliance limits (smua.source.limitY) are not used to control the output. Pulser protection
levels are used instead. Refer to Pulser protection levels (on page 4-4)for information.
If the output is on and you enable or disable the pulser, the output is automatically turned off.
Pulser functional block diagram
The following figure shows a simplified block diagram that represents the function of the pulser circuit.
Figure 51: Functional block diagram of the pulser circuit
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