Agilent Technologies Agilent E5250A Guida Utente Scaricare il pdf (Pagina 34)

2-14 Agilent 4155C/4156C VXIplug&play Driver User’s Guide, Edition 1

Driver Functions

hp4156b_cmdReal

This function passes the cmd_str string to the instrument. This entry point passes

the string in cmd_str followed by a space and then the real in value. Note that either

an Real32 or 64 can be passed as the Real32 will be promoted.

Syntax ViStatus _VI_FUNC hp4156b_cmdReal(ViSession vi, ViString cmd_str,

ViReal64 value);

Parameters vi Instrument handle returned from hp4156b_init( ).

cmd_str Instrument command (cannot exceed 256 bytes in length).

value Parameter for command. -1E+300 to 1E+300.

hp4156b_cmdReal64Arr_Q

This function passes the cmd_str string to the instrument. This command expects a

response that is a definite arbitrary block of 64 bit reals. You specify the cmd_str

and size parameters, and get result[ ] and count.

Syntax ViStatus _VI_FUNC hp4156b_cmdReal64Arr_Q(ViSession vi, ViString cmd_str,

ViInt32 size, ViReal64 _VI_FAR result[ ], ViPInt32 count);

Parameters vi Instrument handle returned from hp4156b_init( ).

cmd_str Instrument command (cannot exceed 256 bytes in length).

size Size of result[ ] (number of items in the array).

1 to 2147483647.

result[ ] Response from instrument.

count Count of valid items in result[ ].

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Agilent Technologies Agilent E5250A Guida Utente Pagina 34