Tektronix AWG610 - Manual (Page 80)

Operating Basics
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AWG610 Arbitrary Waveform Generator User Manual
If you select the external source, the reference signal connected to the 10 MHz
REF In connector on the rear panel will be used.
The internal clock is from the reference clock oscillator, which uses direct digital
synthesis (DDS). Figure 2–28 shows the clock oscillator configuration.
Trigger Control. The Trigger Control block controls the Memory Address Control
in the operation mode that you specified from the RUN MODE menu.
Waveform Memory and Shift Register. The Waveform Memory block has 8 bits for
waveform data and 2 bits per channel for markers, thus a total length of 8.1 M
points. You can set any value from 512 points to 8.1 M points for the length of
waveform data. It must be in increments of 8.
The Shift Register block is used to provide waveform data from the DAC at a
rate up to 2.6 GS/s.
RUN modes. Selecting a RUN mode from the SETUP menu causes one of the
following to operate the AWG610 Arbitrary Waveform Generator:
Table 2-15: Run modes
Modes Descriptions
Continuous Consecutively output regardless of existence of a trigger signal.
Triggered The output signal is obtained only once when one of the following is input:
H An external trigger signal from the rear panel's TRIG IN connector.
H A trigger signal generated with the frontĆpanel's FORCE TRIGGER button.
H A trigger command from external controller.
H If the SEQUENCE has been defined, the TRIGGERED output is obtained
only once according to the definition.
Gated The waveform is output only while:
H An external trigger signal from the rear panel's TRIG IN connector.
H A gate signal through the frontĆpanel's FORCE TRIGGER button is TRUE.
Enhanced The waveform is obtained, in the order defined with the sequence, based on:
H A trigger signal (for example, an external trigger signal from the rear panel's
TRIG IN connector).
H An event signal from the rear panel's EVENT IN connector.
H An event signal from the front panel's FORCE TRIGGER button.
H An event signal from the front panel's FORCE EVENT button (logic jump
only).