Setting and checking the pulser protection levels
To set the voltage protection level using remote commands:
Send the command smua.pulser.protect.sensev with the level defined. For example, to set a
protection level of 8 V, send:
smua.pulser.protect.sensev = 8
To set the absolute voltage protection level using remote commands:
Send the command smua.pulser.protect.sourcev with the level defined. For example, to set
an absolute voltage level of 24 V, send:
smua.pulser.protect.sourcev = 24
To determine if a pulser level protection was tripped, send:
print(smua.pulser.protect.tripped)
A returned value of true indicates that the protection circuit was tripped. The following events can
trip the protection circuit:
• A voltage greater than smua.pulser.protect.sensev was detected on the sense terminals.
• A voltage greater than smua.pulser.protect.sourcev was detected on the force terminals.
• The maximum pulse width was exceeded during trigger model operation.
• The maximum duty cycle was exceeded during trigger model operation.
• If the SMU cannot keep up with the pulse rate.
• If the SMU cannot keep up with the measurement rate.
The status is reset to false when the pulser is disabled or when the output is turned on.
Sink operation
Carefully consider and configure the appropriate output-off state, source function, and
compliance limits before connecting the 2601B-PULSE to a device that can deliver energy (for
example, other voltage sources, batteries, capacitors, solar cells, or other 2601B-PULSE
instruments). Configure recommended instrument settings before making connections to the
device. Failure to consider the output-off state, source, and compliance limits may result in
damage to the instrument or to the device under test (DUT).
When the instrument is operating as a sink, voltage and current have the opposite polarity. During
sink operation, the instrument dissipates power instead of sourcing it. An external source, such as a
battery, or an energy storage device, such as a capacitor, can force operation into the sink region.
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