Appendix E: Functional Operation Summary

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.

Waveform

60

Points

120

Points

Sync

Output

Figure E*12: 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.

Multiplier (AM) 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.

AWG2021 User Manual

E*13