Features and Functions
81150A and 81160A User’s Guide 171
Set the initial
number of
waveform points
You can create an arbitrary bit waveform with up to 64 points per bit.
Depending on the number of levels of the pattern being used, there are 4, 9
or 16 different bit shapes to be defined in one bit shape waveform. Keep in
mind that the waveform is not being played back in sequential order, but
instead the samples of one bit are insequence while the bit definition being
used depends on the current and previous bit value in the pattern.
The waveform editor initially builds a waveform with two points. For ease of
editing this value should be set to the desired number of points per bit when
creating the bit shape waveform. Press the Initial #Points softkey to specify
the initial number of waveform points (you can add or remove points later if
necessary).
For this example, set the initial number of points to “2”.
Select the
interpolation
method
Press the Interpolation softkey to enable or disable linear interpolation
between waveform points. With interpolation enabled (default), the
waveform editor makes a straight-line connection between points. With
interpolation disabled, the waveform editor maintains a constant voltage
level between points and creates a “step-like” waveform.
For this example, turn on linear interpolation.
Remote Interface Operation :DIG:TRAN:INT {ON|OFF|0|1}
For bitshapes, interpolation can be enabled from front panel as well as
through SCPI.
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