R&S SGT100A User Manual page 199

®
R&S SGT100A
2. Enable "RF Envelope > On".
3. Enable "Envelope Voltage Adaptation > Auto Power/Normalization".
4. Select "I/Q Analog Settings > Shaping".
With the provided settings, you can configure the shape of the RF envelope signal.
The instrument applies the settings and calculates the shaping function. A diagram
visualizes the resulting envelope shape, as function of the selected supply voltage
V
cc
point of the PA.
Figure 7-15: Understanding the displayed information ("Envelope Voltage Adaptation > Auto
1a, 1b = Indicates the values of
2a
2b
3
3a
3b
4
5a, 5b = The values correspond to the PEP of the generated RF signal and the V
6
See also:
●
User Manual 1176.8674.02 ─ 07
and PEP value limits, the calculated pre-gain and the estimated operating
in
Power", "Shaping > Detroughing")
V
cc
= Values smaller than PEP
= Values greater than PEP
= Operating point; corresponds to the RF RMS power level
= Current RF RMS power level; an enabled "RF Level > Level Offset" is considered
= Current V
CC
= Crest factor of the generated signal
cates the calculated Pre-Gain
= Current envelope shape, defined by the detroughing function and detroughing factor
"Converting Shaping Functions and Understanding the Displayed Values"
on page 152.
Generation of Envelope Tracking Signals
Min/Max
Min are clipped
in
Max are clipped
in
Signal Generator Settings
; shaded area indi-
CC
168