Synchronous Triggers - Agilent Technologies N6030A Series User Manual

• Hold
Holds at the end of the waveform
• Stop
Stops playback
• Resume
Resumes playback at the point in the waveform that play was held or
stopped
The Waveform Advance, Scenario Advance, Waveform Jump, and Scenario
Jump triggers are only available through the programatic interfaces.

Synchronous Triggers

01Triggers are registered into the N6030A Series AWGs using the SYNC
clock. The SYNC clock is nominally at the sample clock frequency divided
by 8. However, at lower sample rates an internal variable modulus prescaler
selects other binary divide ratios: 8, 4, 2, and 1. In general, the SYNC clock
frequency is always in the range of 78.13 MHz to 156.25 MHz. The input
clock frequency ranges and prescaler divide ratios are as specified in
Table
Table 3-1
Sample Clock Frequency
625 MHz - 1.25 GHz
312.5 MHz – 625 MHz
156.25 MHz – 312.5MHz
100 MHz – 156.25 MHz
It is necessary to insure that the correct timing relationships are achieved to
guarantee consistent synchronous trigger operation. The trigger input must
occur within a valid window with respect to the SYNC clock. The window is
specified by two times: Twin_low —the minimum trigger delay after the
prior SYNC clock edge; and Twin_up — the minimum trigger setup before
the next SYNC clock edge. These are specified for the trigger input relative
Chapter 3
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3-1:
Synchronous Triggers
Theory of Operation
Theory of Operation
SYNC Clock Prescaler Divide Ratio
8
4
2
1
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