Racal Instruments 3156B, Руководство пользователя

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3156B User Manual
Programming Reference 5-94 Racal Instrument © 2005
Ri3156b_set(query)_sweep_stop
Description
This specifies the sweep stop frequency. The 3156B will normally sweep from start to stop frequencies
however, if the sweep direction is revered, the output will sweep from stop to start frequencies. To reverse
sweep direction use the ri3156B_set_sweep_direction() function. The start and stop frequencies may be
programmed freely throughout the frequency of the standard waveform frequency range.
Channel Dependency: Independent
C Syntax
ViStatus ri3156b_set_sweep_stop (ViSession instrHandle, ViReal64 stopFrequency)
ViStatus ri3156b_query_sweep_stop (ViSession instrHandle, ViReal64 * stopFrequency)
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.
stopFrequency
ViReal64
Programs the sweep stop frequency.
Valid range: 0.01 to 25e6 (Hz)
Default: 10e3
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.