Keithley 4200A-SCS Reference Manual page 966

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Model 4200A-SCS Parameter Analyzer Reference Manual

The relationship between a step function and a sweep function for SMUs is illustrated in

mode timing diagrams

Operation Mode (PMU)

sweep is performed on another terminal.

A pulse_step_linear function cannot be used by itself. At least one PMU channel in a test must

be a valid pulse_sweep_linear function call. The last three sweep types are for pulse dual

Use the start, stop, and step parameters to configure stepping. In addition, ensure that all pulse

parameters are set before calling the pulse_sweep_linear or pulse_step_linear function. For

example, when performing a pulse amplitude sweep (PULSE_AMPLITUDE_SP), use pulse_vlow to

set the base voltage.

Amplitude and base level:

The pulse card can step or sweep amplitude (with base level fixed) or step or sweep base level (with

amplitude fixed). SweepType examples:

PULSE_AMPLITUDE_SP (stepping or sweeping): Start = 1 V, stop = 5 V, step = 1 V

Voltage amplitudes for pulse output sequence: 1 V, 2 V, 3 V, 4 V, and 5 V.

Note: Use the pulse_vlow function to set the base level voltage.

PULSE_BASE_SP (stepping or sweeping): Start = 5 V, stop = 1 V, step = -1 V

Voltage base levels for pulse output sequence: 5 V, 4 V, 3 V, 2 V, and 1 V.

Note: Use the pulse_vhigh function to set the amplitude voltage.

DC voltage level: The pulse card can step or sweep a DC level. SweepType example:

Pulse period:

The pulse period is the time interval between the start of the rising transition edge of consecutive

output pulses (see

4200A-901-01 Rev. C / February 2017

(on page 3-36). The step/sweep relationship for pulsing is similar (see

(on page 6-63)). While a terminal of a device is at a pulse step, a pulse

Dual Sweep Option

(on page 6-71)).

PULSE_DC_SP (stepping or sweeping): Start = 1 V, stop = 5 V, step = 1 V

DC voltage output sequence: 1 V, 2 V, 3 V, 4 V, and 5 V.

Pulse period

(on page 6-102)). SweepType example:

PULSE_PERIOD_SP (stepping or sweeping): Start = 0.01 s, stop = 0.05 s,

step = 0.01 s

Pulse periods for output sequence: 0.01 s, 0.02 s, 0.03 s, 0.04 s, and 0.05 s.

Section 13: LPT library function reference