To create a short waveform using ASCII data
There are several computer programs that let you create arbitrary
waveforms (such as MATLAB or MATRIXx2
)
. This procedure shows you
how to load a short, computer-generated waveform into the analyzer’s
arbitrary source. Short waveforms contain 4096 complex or 8192 real
points, or less.
1. Use your program to create a waveform that contains no more than 4096
complex or 8192 real points (for larger waveforms, see ‘’To create a long
waveform using ASCII data’’).
2. Save your waveform as an ASCII file.
3. Convert your file from ASCII to SDF.
With the SDF utilities installed on your computer, type the following from
a DOS prompt:
ASCTOSDF [/z:cf] /x:0, ∆t source_file destination_file
where: /z:cf specifies the center frequency (use with complex data).
/x:0 specifies the start time as 0 seconds.
∆t is the interval between samples.
source_file is the name of your ASCII file
destination_file is the name of the SDF file.
4. Copy the SDF file to a 3.5" floppy disk.
5. Load the floppy disk into the analyzer and recall the SDF file into a data
register.
Press [
Save/Recall
], [
default disk
], [
internal disk
], [
Return
].
Press [
catalog on] and select your file.
Press [
recall trace], [from file into D1].
6. Configure the arbitrary source to use the data register.
Press [
Source
], [
source type
], [
arb data reg], [D1
]
,[
Return
].
7. Turn on the arbitrary source.
Press [
arbitrary
], [
Return
], [source on].
The arbitrary source is now generating your waveform.
Creating Arbitrary Waveforms
6-6
2 MATRIXx is a product of Integrated Systems, Inc.
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