Configuring the internal baseband source
R&S
®
SMM100A
188
User Manual 1179.1341.02 ─ 05
The tag
CLOCK
contains always the highest clock rate of all segments. The tag
MWV_SEGMENT_CLOCK
contains the clock rates of the individual segments.
Setting parameters:
Mode
UNCHANGED
The segments may have different clock rates; each segment is
output with the clock rate defined in its waveform file.
HIGHEST
All segments are output at the highest available clock rate.
USER
All segments are output at the clock rate defined by the user.
Note:
Only upsampling is allowed, no downsampling!
Example:
{MWV_SEGMENT_CLOCK_MODE: UNCHANGED}
Usage:
Setting only
{MWV_SEGMENT_CLOCK: ClockSeg0, ClockSeg1, …, ClockSegN-1}
(mandatory for multi-segment waveforms)
The tag contains a list of clock frequencies for every segment in the multi-segment
waveform in ASCII floating point format.
Example:
{MWV_SEGMENT_CLOCK: 100e6,80e6}
2 segments: clock of segment 0 is 100 MHz, clock of segment 1
is 80 MHz.
Note:
If the segments have different clock frequencies, there are
some restrictions on signal output, i.e. seamless switching
between segments is only possible, if all segments have the
same clock frequency. Software resampling (upsampling) can be
used to bring all segments to the same clock.
Usage:
Setting only
{MWV_SEGMENT_LEVEL_MODE: Mode}
(optional for multi-segment waveforms)
The tag contains a string in ASCII format which supplies the clock rate mode, that was
used for calculation of the multi-segment output waveform.
Setting parameters:
Mode
UNCHANGED
Concerning the level settings, the segments are output exactly
as defined in the individual files.
The value displayed with the parameter "Task bar > Level"
applies only to the segment with the highest RMS value. The
remaining segments are output at a lower level than the dis-
played value.
Using the arbitrary waveform generator (ARB)
