Racal Instruments 3156B, Руководство пользователя

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3156B User Manual
WaveCAD 4-14 Racal Instrument © 2005
The Waveform Partition button opens a screen as shown in Figure 4-6
and the Waveform Studio button opens a screen as shown in Figure
4-7. Information how to use these screens is given in the following
paragraphs.
Enable
The enable group affects the 3156B only when the operate enable
source is set to software (software is the default enable source). If the
output state is on, clicking on the operate Enable button will stimulate
the output. In some cases, the disable can stop the output. The
various options to enable and disable the output waveforms, using the
enable commands are given in Table 3-2.
Using the Memory
Partition Table
If you want to learn more about waveform memory and segment
control, you should refer to section 3 of this manual. In general, the
3156B can generate arbitrary waveforms but, before it can generate
anything, waveforms must be downloaded to the instrument from a
host computer. Waveforms are downloaded to the instrument as
coordinates and are stored in the 3156B in a place designated as
“waveform memory”. The waveform memory has a finite size of 1Meg.
Having such long memory does not necessarily mean that you have to
use the entire memory every time you download a waveform. On the
contrary, the 3156B allows segmentation of the memory so that up to
4096 smaller waveforms could be stored in this memory. There are
two ways to divide the waveform memory to segments: 1) Define a
segment and load it with waveform data, define the next and load with
data, then the third etc. or 2) Use what WaveCAD has to offer and that
is to make up one long waveform that contains many smaller
segments, download it to the instrument in one shot and then
download a memory partition table that splits the entire waveform
memory into the required segment sizes.
Want to use it? Here is how it is done.
Point and click on the Memory Partition. A dialog box as shown in
Figure 4-6 will pop up.