Contents 
M8190A User’s Guide    7 
4  Digital Up-Conversion 
4.1  Introduction  127 
4.1.1  Direct Mode  128 
4.1.2  Digital Up-Conversion Modes  129 
4.1.3  Configuration at Run-Time  130 
4.2  IQ Modulation  130 
4.2.1  Interpolated Modes  130 
4.2.2  Markers in Interpolated Modes  131 
4.3  Configuration at Run-Time  131 
4.3.1  Configuration using Standard Data Segments  132 
4.3.2  Configuration using Configuration Segments  134 
4.3.3  Sample-Aligned Configuration Using Markers  144 
4.4  Amplitude Scaling  145 
4.4.1  Scaling by using the amplitude table  145 
4.4.2  Scaling by using the action table  146 
4.4.3  Scaling by using the SCPI command or the Soft Front Panel 146 
4.5  Coarse Delay and Digital Up-Conversion  147 
4.6  Doublet Mode and Digital Up-Conversion  147 
5  Streaming 
5.1  Introduction  149 
5.2  Streaming Implementation Using Dynamic Modes  149 
5.3  Streaming Implementation Using the Ring Buffer Mechanism  150 
5.3.1  Requirements  151 
5.3.2  Theory of Operation  154 
5.3.3  Examples  155 
5.4  Memory Ping-Pong  157 
5.4.1  Setup example using the SCPI API  157 
6  Markers 
6.1  Introduction  159 
6.2  Sample Markers  159 
6.2.1  Pause Between Multiple Marked Samples 161 
6.2.2  Sample Marker in Looped Segments  161 
6.2.3  Sample Marker in Segments which are Addressed Offset Based
  161 
6.3  Sync Markers  162 
7  Low Phase Noise Operation 
7.1  Introduction  163 
7.2  Block Diagram  164 
7.3  Operating in the Low Phase Noise Mode  165