Keysight M8195A - Extended Memory Configuration

Introduction 1
Keysight M8195A Revision 2 – Arbitrary Waveform Generator User’s Guide 31
1.5.4 Extended Memory Configuration
The drawing below provides a more detailed overview regarding the extended
memory configuration.
Waveform Generation
Sequence Vector
Waveform
Memory
Sequencer
Memory
Sequencer
Interpolator
Interpolation Factor
2
Interpolator
Interpolation Factor
1
Interpolator
Interpolation Factor
4
DAC Configuration
Alternative 1: 1 Channel
Alternative 2: Up to 2 Channels
Alternative 3: Up to 4 Channels
1 x Data Channel
(256 Samples Parallel)
2 x Data Channel
(128 Samples Parallel)
4 x Data Channel
(64 Samples Parallel)
DAC Sample Rate
64 GSa/s
DAC Sample Rate
64 GSa/s
DAC Sample Rate
64 GSa/s
Waveform
Sample Rate
64 GSa/s
Waveform
Sample Rate
32 GSa/s
Waveform
Sample Rate
16 GSa/s
Figure 6: Extended memory configuration
The sequencer generates an ongoing stream of vectors containing 256 parallel
samples of 8 bits based on the waveform data and sequencer instructions which are
stored in the corresponding memories. Depending on the sample rate divider, which
corresponds to the interpolation factor mentioned in the above picture, 3 alternative
configurations are possible of how the vector of 256 parallel samples is used to
source up to 4 channels. The selected extended memory configuration is exclusive,
mixed modes are not possible.