Keithley 4200A-SCS Reference Manual

Section
13: LPT library function reference Model 4200A-SCS Parameter Analyzer Referenc
e Manual
13-22 4200A-901-01 Rev. C / February 2017
kibdefclr
This command defines the device-dependent command sent to an instrument connected to the GPIB interface.
Usage
int kibdefclr(int pri_addr, int sec_addr, unsigned int timeout, double delay,
unsigned int snd_size, char *sndbuffer);
pri_addr
The primary address of the instrument (0 to 30; the controller uses address 31)
sec_addr
The secondary address of the instrument (1 to 30; if the instrument device does not
support secondary addressing, this parameter must be -1)
timeout
The GPIB timeout for the transfer in 100 ms units (for example,
timeout = 40 = 4.0 s)
delay
The time to wait after the device-dependent string is sent to the device, in seconds
snd_size
The number of bytes to send over the GPIB interface
sndbuffer
The physical byte buffer containing the data to send over the bus (the physical
CLEAR string); a maximum of 1024 bytes is allowed
Details
This string is sent during any normal tester-based devclr command. It ensures that if the tester is
calling the devclr command internally, any external GPIB device is cleared with the given string.
Each call to kibdefclr copies parameters into a data structure within the tester memory. Thes
e
dat
a structures are allocated dynamically. After the execution of the command buffer using execut,
these tables are cleared. Any strings previously defined must be redefined.
The tester system allows you to define a maximum of 20 clear and 20 initialization strings. Each string
may contain up to a maximum of 1024 bytes. Once defined, these strings remain in effect until the
execut statement is processed.
Strings are sent over the GPIB interface in a first-in, first-out queue. This means that the first call to
the kibdefclr or kibdefint command is the first string sent over the GPIB. The devclr
(kibdefclr) strings are always sent before initialization.
The KIBLIB devclr strings are sent before the devclr and devint commands execute. This may
be a problem when communicating with any Keithley-supported GPIB instruments. This may also
have an effect on the bsweepX command, because the bsweepX command sends a call to t
he
devclr
command to clear active sources. It is not recommended to use GPIB instruments w
hen
performing tests with the bsweepX command.
Also see
bsweepX (on page 13-65)
devclr (on page 13-67)
devint (on page 13-13)
execut (on page 13-16)
kibdefint (on page 13-24)

Keithley 4200A-SCS Specifications

General

Brand	Keithley
Model	4200A-SCS
Category	Measuring Instruments
Language	English