Tutorial
81150A and 81160A User’s Guide 649
7.14 Channel Addition
The Keysight 81150A / 81160A allows you to add the output signal of both
channels internally.
The added signal will always be routed to the output connectors of
channel 1. The addition of the two signals is done before the waveform DAC,
while still working with digital data.
Waveform
DAC
Anti-Aliasing
Filter
Channel 1
Data
Channel 2
Data
Channel 2
Scaling
Channel 1
Scaling
to Channel 1
Amplifier
Channel Addition
The sample data of both channels is being scaled according to the
contribution to the added signal, so that the added signal is using the full
scale of the waveform DAC. The amplifier of channel 1 is set to the sum of
the specified voltages for channel 1 and channel 2.
High Level = High Level
1
+ High Level
2
Low Level = Low Level
1
+ Low Level
2
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