User`s manual

The ARM-TRIG Configuration
Each standard and arbitrary waveform is a series of discrete amplitude
points (digital-to-analog (DAC) codes). The Agilent E1445A AFG uses an
ARM-TRIG triggering configuration to output these points. When initiated,
an arm signal enables the AFG to output one amplitude point each time a
trigger signal is received. The “arm-trigger” model is shown in Figure 5-1.
The ARM-TRIG
States
The AFG operates within four states: Idle, Wait-for-Arm, Wait-for-Trigger,
and Instrument Action (see Figure 5-1).
When power is applied or following a reset or an abort, the AFG is in the
Idle state. The AFG is set to the Wait-for-Arm state with the
INITiate[:IMMediate] command.
The AFG moves to the Wait-for-Trigger state when an arm from the
specified arm source is received. The AFG moves to the Instrument Action
state when a trigger is received.
After the Instrument Action (amplitude point is output) occurs, the AFG
returns to the Wait-for-Trigger state until the next trigger occurs. When
enough triggers have occurred such that the specified waveform cycle
(repetition) count has been reached, the AFG returns to the Wait-for-Arm
state until the next arm occurs. When the specified arm count has been
reached, the AFG returns to the Idle state.
Figure 5-1. The ARM-TRIG Triggering Model
164 Arming and Triggering Chapter 5