Kibdefint - Keithley 4200A-SCS Reference Manual

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Section 13: LPT library function reference

kibdefint

This command defines a device-dependent command sent to an instrument connected to the GPIB interface.

int kibdefint(int pri_addr, int sec_addr, unsigned int timeout, double delay,

unsigned int snd_size, char *snd_buff);

This string is sent during any normal tester-based call to the devint command. It ensures that if the

tester is calling the devint command internally, any external GPIB device is initialized with the rest

of the known instruments.

Each call to kibdefclr copies parameters into a data structure within the tester memory. These

data 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 the

devclr command to clear active sources. It is not recommended to use GPIB instruments when

performing tests with the bsweepX command.

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The primary address of the instrument (0 to 30; the controller uses address 31)

The secondary address of the instrument (1 to 30; if the instrument device does not

support secondary addressing, this parameter must be -1)

The GPIB timeout for the transfer in 100 ms units (for example,

timeout = 40 = 4.0 s)

The time to wait after the device-dependent string is sent to the device, in seconds

The number of bytes to send over the GPIB interface

The physical byte buffer containing the data to send over the bus (the INITIALIZE

string); a maximum of 1024 bytes is allowed

Model 4200A-SCS Parameter Analyzer Reference Manual

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