User`s manual

8. Place the AFG into Hold Until All Commands are Executed
*OPC?
This commands prevents the AFG from receiving data over the
VXIbus until it executes all the previous commands. If
*OPC? is not
sent, the AFG will try to receive data, and thus generate an error,
even before it completes executing the previous commands.
9. Generate, Download, and Store the First Waveform Segment as a
Combined Signed List
This step stores the Combined waveform segment into segment
memory using the Signed number format set by the
[SOURce:]ARBitrary:DAC:FORMat SIGNed command. The
command or downloading method used depends on the device that
downloads the data. For example, the device may be an embedded
controller. (You can also use the command module, like the E1406A
Command Module, but at a slower data transfer rate.)
Be sure to the last point bit at the appropriate point on the waveform.
10. Notify the AFG that Downloading is Completed
[SOURce:]ARBitrary:DOWNload:COMPlete
Send this command to the AFG after all data is downloaded.
11. Setup the Second Combined Segment List
[SOURce:]LIST[1][:SEGMent]:SELect <name>
[SOURce:]LIST[1][:SEGMent]:DEFine <
length>
12. Select the Download Source for the Second Segment List
[SOURce:]ARBitrary:DOWNload <source>,<dest>,<length>
This command selects the source used to download DAC data into
segment memory (see “DAC Sources” on page 280). The
<source>
parameter selects the download source, <dest> contains the name of
the waveform segment to be downloaded, and <length> contains the
size of the waveform segment in number of points (i.e., the same size
set in
[SOURce:]LIST[1][:SEGMent]:DEFine <length>).
13. Place the AFG Into Hold Until All Commands are Executed
*OPC?
This commands prevents the AFG from receiving data over the
VXIbus until it executes all the previous commands. If
*OPC? is not
sent, the AFG will try to receive data, and thus generate an error,
even before it completes executing the previous commands.
14. Generate, Download, and Store the Second Waveform Segment
as a Combined Signed List
This step stores the Combined waveform segment into segment
memory using the Signed number format set by the
[SOURce:]ARBitrary:DAC:FORMat SIGNed command. The
command or downloading method used depends on the device that
downloads the data. For example, the device may be an embedded
262 High Speed Operation Chapter 7