Adelay; Asweepx; Lpt Commands For Smus - Keithley 4200A-SCS Reference Manual

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Model 4200A-SCS Parameter Analyzer Reference Manual

The following information explains the commands in the LPT library for the SMUs.

adelay

This command specifies an array of delay points to use with asweepX command calls.

int adelay(long delaypoints, double *delayarray);

The delay is specified in units of seconds, with a resolution of 1 ms. The minimum delay is 0 s.

Each delay in the array is added to the delay specified in the asweepX command. For example, if the

array contains four delays (0.04 s, 0.05 s, 0.06 s, and 0.07 s) and the delay specified in the asweepX

command is 0.1 s, then the resulting delays are 0.14 s, 0.15 s, 0.16 s, and 0.17 s.

This command generates a waveform based on a user-defined forcing array (logarithmic sweep or other custom

forcing commands).

int asweepi(int instr_id, long num_points, double delay_time, double *force_array);

int asweepv(int instr_id, long num_points, double delay_time, double *force_array);

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

The number of separate delay points defined in the array

The name of the array defining the delay points; this is a single-dimension

floating-point array that is delaypoints long and contains the individual delay

times; units of the delays are seconds

(on page 13-59)

The instrument identification code of the sourcing instrument

The number of separate current and voltage force points defined in the array

The delay, in seconds, between each step and the measurements defined by the

active measure list

The name of the user-defined force array; this is a single dimension array that

contains all force points

Section 13: LPT library function reference