Rohde & Schwarz SMBV100A - Creating a Waveform Manually

Remote Control Commands
R&S
®
SMBV100A
451Operating Manual 1407.6062.32 ─ 08
Fig. 7-1: Marker element in 4-bit binary format bit order
For standard waveforms the MARKER LIST x tags are a more compact way to define
markers, but in prinziple this CONTROL LIST WIDTH4 format can also be used instead
of the MARKER LIST x tags.
For multi segment waveforms this CONTROL LIST WIDTH4 format is required for marker
definition. The binary marker streams of the individual segments are directly concaten-
ated (without any gap) to one collectively marker stream.
Setting parameters:
Length Defines the number of bytes in the CONTROL LIST WIDTH4 tag
in ASCII Format and is calculated as follow:
Length = Size of "#" (1 byte) + Number of marker elements m
x
*
(4 bit) / (8 bits/byte)
The value is rounded up for byte alignment.
mx Marker element in 4-bit binary format.
Example: {CONTROL LIST WIDTH4-51: #m
0
m
1
…m
x
…m
99
}
100 marker elements, each marker element with 4 bits
Usage: Setting only
7.3.2 Creating a Waveform Manually
We will use the example of a sine function in the I channel and a cosine function in the
Q channel, each with 20 points, to explain how a waveform file SICO.WV is generated.
The sine and cosine values are calculated by a short program written in the programming
language C (see the following example for creating a C-program). They are stored in the
file SICO.TXT as follows:
Contents of SICO.TXT:
Sine (I) Cosine (Q)
0.000000 1.000000
0.309017 0.951057
0.587785 0.809017
0.809017 0.587785
0.951057 0.309017
1.000000 -0.000000
0.951056 -0.309017
0.809017 -0.587785
0.587785 -0.809017
R&S Signal Generator Waveform and List Format