R&S SGT100A User Manual page 37

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R&S SGT100A
7.1.4 ARB Offsets................................................................................................................ 123
7.2 Additive White Gaussian Noise (AWGN) - Noise Generator................................. 123
7.2.1 About the AWGN Generator....................................................................................... 123
7.2.2 AWGN Settings........................................................................................................... 125
7.2.2.1 General Settings......................................................................................................... 125
7.2.2.2 Noise Power/ Output Results Settings........................................................................ 127
7.3 I/Q Modulation and Impairment Settings................................................................ 132
7.3.1 I/Q Modulation.............................................................................................................132
7.3.2 Impairments................................................................................................................ 133
7.3.2.1 I and Q Offset..............................................................................................................133
7.3.2.2 Gain and Gain Imbalance........................................................................................... 133
7.3.2.3 Quadrature Offset....................................................................................................... 134
7.3.3 I/Q Modulator Settings................................................................................................ 135
7.3.3.1 General....................................................................................................................... 135
7.3.3.2 Analog Impairments.................................................................................................... 138
7.3.3.3 Digital Impairments..................................................................................................... 139
7.4 I/Q Analog Output Settings...................................................................................... 141
7.4.1 General Analog I/Q Output Settings............................................................................142
7.5 Generation of Envelope Tracking Signals.............................................................. 146
7.5.1 Required Options........................................................................................................ 146
7.5.2 About the Envelope Tracking...................................................................................... 146
7.5.2.1 Envelope Voltage Adaptation Modes.......................................................................... 147
7.5.2.2
Signal Parameters for Testing According to the eTrak
7.5.2.3 Envelope Shaping and Shaping Methods................................................................... 148
About the Linear Functions......................................................................................... 149
About the Detroughing Function................................................................................. 149
About the Polynomial Function................................................................................... 150
About the Shaping Table.............................................................................................151
Shaping Function in Raw Data Format....................................................................... 152
Converting Shaping Functions and Understanding the Displayed Values..................152
7.5.3 General RF Envelope Settings....................................................................................157
7.5.4 Envelope Settings....................................................................................................... 165
7.5.5 Shaping Settings......................................................................................................... 167
User Manual 1176.8674.02 ─ 07
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Specification........................ 148
Contents
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