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Appendix E: Functional Operation Summary
AWG2021 User Manual
EĆ13
In Cont mode, the original data length is multiplied to make it a multiple of 8.
For example, if the original waveform has 60 points, two of them are strung
together to make a waveform with 120 points. However, in this case the SYNC
output is only generated for every other waveform. Figure E-12 shows the
relationship between the waveform points and SYNC output in Cont mode.
60
Points
120
Points
Waveform
Sync
Output
Figure EĆ12: Relationship Between Waveform Points and SYNC Output in Cont
Mode
The marker signals are written into waveform memory in the same manner as
waveform data. This data passes through the marker output amplifier as is and is
output.
DAC. The DAC converts the digital data from the waveform memory into analog
signals. This converter has a resolution of 12 bits.
When the output voltage is set, an attenuator is used, but since this attenuator’s
voltage division ratio is fixed, the DAC reference voltage is varied to provide
continuously variable voltage.
When this mode is not selected, the multiplier is not included in the signal path.
This multiplier has a 30 MHz band for the carrier signal and a 4 MHz band for
the modulation signal. When this block is selected, the following two AM modes
can be used.
External AM Mode. AM modulation is applied to the CH1 signal from the rear
panel BNC connector. Table E-2 shows the output signal amplitude for external
modulation signals.
Multiplier (AM)