Rohde & Schwarz R&S SMW200A - I;Q Output Type; Mode; Show Connector

Signal Routing and System Configuration
R&S
®
SMW200A
186User Manual 1175.6632.02 ─ 30
The envelope tracking (ET) is a method used by modern power amplifiers (PA) to
improve their efficiency, especially when amplifying high crest factor RF signals. With
envelope tracking, the PA estimates, i.e. "tracks", the RF signal and varies the supply
voltage at the end amplifying stage synchronous to the changes in the RF signal.
See user manual R&S SMW-K540, R&S SMW-K541 Envelope Tracking and AM/AM,
AM/PM Predistortion.
Remote command:
[:SOURce<hw>]:IQ:OUTPut[:ANALog]:ENVelope:STATe
Show Connector
Accesses a dialog that displays the physical location of the selected connector on the
front/rear panel of the instrument.
A blinking LED on the front/rear panel indicates the selected connector, too (see Chap-
ter 12.2.2.4, "Status Indicators", on page 718).
I/Q Output Type
Selects the type of output signal.
The provided parameters in the "I/Q Analog Outputs" dialog depend on the selected
output mode.
"Single-Ended"
●
If "RF Envelope > Off"
Single-ended output at the I/Q connectors.
Option: R&S SMW-B9: the signal from "I/Q Analog B" is output at
the I Bar connectors.
See Figure 4-3 and Figure 4-4.
●
If "RF Envelope > On"
The envelope signal E is output at the I connectors.
You can define a bias between the output signal and ground.
"Differential"
Option: R&S SMW-B10 and R&S SMW-K16
Or R&S SMW-B9 and R&S SMW-K17.
●
If "RF Envelope > Off"
The analog I/Q signal components are output at the I/Q and I/Q
Bar connectors.
See Figure 4-3 and Figure 4-4.
Option: R&S SMW-B9: the differential signal output can be activa-
ted in "I/Q Analog A" block only. Single-ended and differential sig-
nals cannot be output simultaneously.
●
If "RF Envelope > On"
The inverted envelope signal Ē is output at the I Bar connectors.
Remote command:
[:SOURce<hw>]:IQ:OUTPut[:ANALog]:TYPE on page 1141
Mode
Selects the mode for setting the outputs, independent or together.
Option: R&S SMW-B9: both paths use the same "Mode".
I/Q Analog Output Settings