Racal Instruments 3156B, Руководство пользователя

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3156B User Manual
Programming Reference 5-168 Racal Instrument © 2005
FSK_Word_Length
ViInt16
Defines the length of the FSK data array. This number
must match the number of shifts in the data array
Valid Range: 8 to 4096
Default: 8
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_pattern_stim_list
Description
This function is similar to the ri3156b_load_FSK_data function except it points to a file name that was already
prepared and stored on your computer. The complete path to the file location is required. This function will
download the data file for the Freerun digital patterns. For freerun digital patterns, one can program variable
hold count for each pattern. The hold count defines the dwell time per pattern.
Below you can see how a digital pattern sample files are constructed. The sample below shows a list of 10
patterns and their associated hold counts. 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_dig_patter_rate() function call.
Channel Dependency: Independent
Sample File Digital Patters Arrays – Freerun Mode
0x001 100 0x100 200 0x203 333 0x400 44 0x805 50 0xD00 600 0xA07 707 0x118 8 0x0FD 90 0x010 1000
Sample File Digital Patters Arrays – Stimulus Mode
0x001 0x100 0x203 0x400 0x805 0xD00 0xA07 0x118 0x0FD 0x010
C Syntax
ViStatus ri3156b_load_dig_pattern_stim_list (ViSession instrHandle, ViString
waveCADdigitalPatternDataFileName,ViInt32 digPatternStimListSize
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.