R&S SGT100A, Руководство пользователя

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Signal Generator Settings
R&S
®
SGT100A
166 User Manual 1176.8674.02 ─ 07
1 = Enabled Digital Predistortion
2 = Envelope detector,
√
[I(t)
2
+Q(t)
2
]; indication changes, depending on the Envelope Voltage
Adaptation
3a, 3b = Pre-Gain / Post-Gain (available in "Envelope Voltage Adaptation > Manual" mode
4 = Shaping state and shaping function; grey background color = deactivated shaping
5 = Enabled Envelope to RF Delay
6 = Indicates the output connectors, depending on the I/Q Output Type
The dialog displays an interactive overview diagram of the ET processing chain.
The diagram displays information on shaping state, incl. current shaping method
and setting, like gains or delay.
Tip: Hotspots for quick access. The displayed blocks are hotspots. Select one of
them to access the related function.
3. To shape the envelope signal, perform one of the following:
a) on the overview diagram, select the "Shaping" block
b) select "I/Q Analog Settings > Shaping"
See Chapter 7.5.5, "Shaping Settings" , on page 167.
Envelope to RF Delay ................................................................................................. 166
Calculate Envelope form Predistorted Signal ..............................................................167
Envelope to RF Delay
Sets the time delay of the generated envelope signal relative to the corresponding RF
signal. A positive value means that the envelope signal delays relative to the RF signal
and vice versa.
Generation of Envelope Tracking Signals