How To Manually Create A Waveform Using Tag File Format - Emerson R&S SGT100A User Manual

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R&S SGT100A
{CONTROL LIST WIDTH4–Length: #m0m1...mx...mM-1}
(optional for waveforms and multi-segment waveforms)
The tag contains a binary marker element stream, which is transmitted synchronously
to the I/Q sample sequence. One marker element 'mx' consists of 4 bit, which are
assigned to the 4 possible marker lines of the instrument (one bit per marker line). One
4-bit marker element is needed for every I/Q sample in the WAVEFORM tag, The number
of marker elements M is equal to the number of I/Q samples. The CONTROL LENGTH
tag has to contain the number of all marker elements M.
Figure 11-1: 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 principle 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
concatenated (without any gap) to one collectively marker stream.
Setting parameters:
Length
mx
Example:
Usage:
11.2 How to manually create a waveform using tag file for-
mat
The provided example uses a sine function in the I channel and a cosine function in the
Q channel, each with 20 points. The example uses a short program written in the pro-
gramming language C to calculate the sine and cosine values (see
gram for creating a waveform file"
SICO.txt. The decimal values in SICO.txt are normalized such that they are
User Manual 1176.8674.02 ─ 12

How to manually create a waveform using tag file format

Defines the number of bytes in the CONTROL LIST WIDTH4 tag
in ASCII Format and is calculated as follows:
Length = Size of "#" (1 byte) + Number of marker elements m
(4 bit) / (8 bits/byte)
The value is rounded up for byte alignment.
Marker element in 4-bit binary format.
{CONTROL LIST WIDTH4-51: #m
100 marker elements, each marker element with 4 bits
Setting only
on page 578). They are saved in the file
Waveform and list format
m ...m ...m }
0 1 x 99
Example"C-pro-
*
x
575