Racal Instruments 3156B, Руководство пользователя

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3156B User Manual
Racal Instrument © 2005 Programming Reference 5-133
Return Values
Displays the return status of the function call. If the function was successful, it will return a status of
VI_SUCCESS, otherwise it will return an error code. Passing the error code into the function
"ri3156B_error_message()" will return a string describing the error.
Ri3156b_load_dig_data_stim_list
Description
This command will download the data arrays for the Stimulus digital patterns. For stimulus digital patterns, the
hold time is fixed at the rate set by the frequency parameter. For variable hold count you may want to use the
Freerun digital patterns option.
Below you can see how a Stimulus digital pattern table is constructed. The sample below shows a list of 10
patterns. The 3156B will step through this list, outputting the next pattern each time it hop to the next step at a
rate programmed by the ri3156B_set_stim_freq () function call.
Channel Dependency: Independent
Sample Digital Patters Arrays – Stimulus Mode
Digital Pattern Array: 0x001 0x100 0x203 0x400 0x805 0xD00 0xA07 0x118 0x0FD 0x010
C Syntax
ViStatus ri3156b_load_dig_data_stim_list (ViSession instrHandle, ViInt16 digitalDataStimList[], ViInt32
digitalDataStim_listSize)
Parameters
Name
Variable
Type
Description
instrHandle ViSession The Instrument Handle is used to identify the unique
session or communication channel between the driver
and the instrument. If more than one instrument of the
model type is used, this will be used to differentiate
between them. Note that the initialize function may be
used to associate multiple instrument handles with a
single instrument.
digitalDataStimList
ViInt16[]
Points to an array of patterns. Pattern values are in hex
format.
Valid Range: 0 to 0xFFF (12-bit)
digitalDataStim_listSize
ViInt32
Defines the number of digital pattern steps are included
in the table. This number must match the number of
patterns in the data array.
Valid Range: 1 to 523264