R&S SGT100A User Manual page 540

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R&S SGT100A
IxQx
Example:
Example:
Usage:
{MWV_SEGMENT_COUNT: NumOfSeg}
(mandatory for multi-segment waveforms)
The tag contains the number of segments in the multi-segment waveform in ASCII inte-
ger format.
Example:
Usage:
{MWV_SEGMENT_LENGTH: SamplesSeg0, SamplesSeg1, ..., SamplesSegN-1}
(mandatory for multi-segment waveforms)
The tag contains a list of I/Q sample lengths for every segment in the multi-segment
waveform in ASCII integer format.
User Manual 1176.8674.02 ─ 07
IxQx... represents binary data (16-bit signed integer in 2's com-
plement notation) containing the I and Q component alternately
and starting with the I component. Each component consists of 2
bytes in Little endian format representation, i.e least significant
byte (LSB) first.
The values of the 2 bytes in an I component and a Q component
are in the range 0x0 to 0xFFFF (-32767 to +32767). This value
is transferred to the D/A converter.
This tag is also used to store multi-segment waveforms. The I/Q
streams of the individual waveforms are directly concatenated to
one collectively waveform I/Q stream.
The number of segments and the start offset and length of the
individual segments inside the total waveform I/Q stream is
determined by the additional tags MWV_SEGMENT_COUNT,
MWV_SEGMENT_START, and MWV_SEGMENT_LENGTH.
Further MWV_SEGMENT_... tags are also available, for example
for level and clock information.
One segment waveform
{WAVEFORM-401:#I ,Q
0
100 I/Q pairs with 4 bytes each are transmitted - none multi-seg-
ment
Multi-segment waveform
{WAVEFORM-1201:
#I ,Q ,I ,Q
0,Seg0 0,Seg0 1,Seg0 1,Seg0
Q ,... I ,Q
1,Seg1 199,Seg1 199,Seg1
2 segments: segment 0 with 100 I/Q pairs; segment 1 with 200
I/Q pairs. Each I/Q pair consists of 2*16 bit = 4 bytes
Setting only
{MWV_SEGMENT_COUNT: 2}
Multi-segment waveform with 2 segments
Setting only
Waveform and List Format
,I ,Q ,I ,Q ,...I ,Q }
0 1 1 2 2 99 99
,...I ,Q ,I
99,Seg0 99,Seg0 0,Seg1
}
Tag Description
,Q ,I ,
0,Seg1 1,Seg1
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