3156B User Manual
Programming Reference 5-140
Racal Instrument © 2005
ri3156b_set(query)_video_offset_step
Description
This programs the video stroke offset step increment. The video character will move about the screen at a rate
set by the ri3156B_set_video_stroke_point_freq () and in step increments set by this function call.
Channel Dependency: Independent
C Syntax
ViStatus ri3156b_set_video_offset_step (ViSession instrHandle, ViReal64 videoStrokeOffsetStep)
ViStatus ri3156b_query_video_offset_step (ViSession instrHandle, ViReal64 * videoStrokeOffsetStep)
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.
videoStrokeOffsetStep
ViReal64
Selects the video stroke offset step increment.
Valid Range:
±
1e-3
to
±
9.99
(V into 50
Ω
)
Default Value: 1e-3
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.
