Rohde & Schwarz R&S UPP, Руководство пользователя

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Instrument Functions
R&S
®
UPP
347 User Manual 1411.1055.32 ─ 10
"Freq ..." Externally controlled measured value recording; measured value trig-
gering when a significant frequency change occurs on the trigger
channel (external frequency sweep); available on multichannel ana-
lyzers only if the trigger channel is switched on.
The measurement results are entered in the measured value buffer
and displayed in the measurement results panel. The measured fre-
quency is entered as an X value of the sweep.
This start condition cannot be combined with the frequency sweep of
the selective RMS measurement. The sweep x-axis is always prede-
fined by the external frequency sweep, even if the internal generator
is generating the sweep signal.
●
Clean signals
For particularly fast frequency sweeps with clean signal (e.g. from
CD), the Fast variant "Freq Fast", "Freq Fast Ch1", "Freq Fast
Ch2" can be selected.
●
Signals with high noise component
If the signal has a high noise component, the slower but more
precise measuring method "Freq", "Freq Ch1", "Freq Ch2" must
be used. To achieve the shortest possible measuring times, the
measurement of the trigger condition is done via an FFT with an
FFT size that is automatically optimized to the expected signal
frequency. If no frequency can be determined, then the FFT size
is adjusted to the lowest expected frequency (start or stop value).
"Volt ..." Externally controlled measured value recording; measured value trig-
gering when a significant level change occurs on the trigger channel
(external level sweep); can be selected on multichannel analyzers
only if the trigger channel is switched on.
The measurement results are entered in the measured value buffer
and displayed in the measurement results panel. The measured level
is entered as an X value of the sweep.
This start condition cannot be combined with the frequency sweep of
the selective RMS measurement. The sweep x-axis is always prede-
fined by the external level sweep, even if the internal generator is
generating the sweep signal.
"Lev Trig ..." Measured value triggering due to a level detected on the trigger chan-
nel at the analyzer input; can be selected on the multichannel ana-
lyzers only if the trigger channel is switched on.
This start condition can be combined with any sweep and has no
effect on the sweep x-axis.
Sweep stepping or - if the sweep system is inactive - pressing
[START ] or [SINGLE ] alerts level monitoring to wait until a level in
the range between start and stop is measured (level triggering).
When this occurs a single measurement is started, if necessary after
a specified delay.
In the case of continuous measurement, a further triggering in the
specified range occurs only if the level has gone over or under the set
range in the interim. This means that level monitoring is not put on
alert again until a level outside of the specified range is detected.
Setting Start Condition