Keithley 4200-SCS User Manual page 258

Section 3: Common Device Characterization Tests
PrePulse2Delays(double) Array of time values used as a delay before the second
TransitionTimesPulse2(double) The amount of time it will take the second pulse to
Pulse2Widths(double) Array of values defining the pulse widths for the second
PostPulse2Delays(double) Array of time values used as a delay after the second
NumPulses(int) The number of pulses to output; range: 1 to 2
NumSMUBiasTerminals(int) The number of bias SMUs to include in the test.
SMUBiasTerminals(char *) A string representation of all the SMU channels being
SMUBiasVoltages(double) Array of SMU bias values used during the test. The
NumSharedSMUs(int) The number of SMUs sharing a connection to the device
SharedSMUs(char *) A string representation of all the shared SMU channels used
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pulse is output. This delay happens after the
PostPulse1Delays. Valid values range from 20 ns to
1 s in 10 ns increments (s).
rise/fall (0-100%/100-0%) from the BaseValue (0 V) to
the given Pulse Voltage. If the pulse voltage level is
from -5 to +5 V, then the valid transition times are from
20 ns to 33 ms in 10 ns increments, else if pulse
voltage is within -20 to +20 V, then valid values range
from 100 ns to 33 ms in 10 ns increments (s).
pulse in each channel. Minimum values are 20 ns to
1 s. Pulse width is defined as FWHM, so it includes
half of the fall time and half of the rise time (transition
time), in seconds.
pulse is output (that is, time at the 0 V base voltage).
Valid values are 20 ns to 1 s in 10 ns increments (s).
These are SMUs that are not connected in the
SMU+Pulse sharing configuration, but additional
SMUs that could be used for biasing word or bit lines.
used in the test. For example, if SMU1 and SMU2 are
used for a bias, SMUBiasTerminals is SMU1,SMU2.
values correspond to the number and order in the
SMUBiasTerminals string.
with a VPU. Sharing a connection means using a Tee
to combine a SMU and VPU channel for a DUT
terminal, instead of using an external switch matrix.
This variable stores the number of shared SMU+Pulse
instances.
in the test. This string disconnects each SMU from the
shared cable during pulse output. For example, if
SMU1 is connected through a Tee to a pulse channel
and SMU2 is also connected to another pulse channel,
then the SharedSMUs string would be: SMU1, SMU2.
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Model 4200-SCS User's Manual
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(about 4.2 billion).
4200-900-01 Rev. K / February 2017