Agilent Technologies 4288A Programming Manual page 55

Starting (Triggering) Measurement and Waiting for Completion of Measurement
Waiting for trigger state (trigger event detect state)
The waiting for trigger state, when the instrument is triggered (a trigger is detected) or the
:TRIG command on page 195 is executed, transitions to the measurement state after the
trigger delay time (set with the :TRIG:DEL command on page 195) has elapsed (b in
Figure 5-1).
As shown in the table below, the instrument triggering method differs depending on which
trigger mode is set. To set up the trigger mode, use the :TRIG:SOUR command on
page 196.
Internal trigger (Int)
External trigger (Ext)
GPIB trigger (Bus)
Manual trigger (Man)
Figure 5-2 Transition flow from waiting for trigger state to measurement state
Measurement state (sequence operation state)
Measurement is performed in the measurement state. When the measurement is finished,
the state transitions to a different state depending on the setup of the continuous activation
of the trigger system (set with :INIT:CONT on page 183) as shown below.
When the continuous activation is OFF:
When the continuous activation is ON:
Chapter 5
Trigger mode
The instrument is automatically triggered within itself.
The instrument is triggered when a trigger signal is input
through the Ext Trig terminal or the handler/scanner interface.
The instrument is triggered when the *TRG command on
page 128 is executed.
The instrument is triggered when the
panel is pressed.
Transition to the idle state (c in Figure 5-1)
Transition to the waiting for trigger state (d in Figure 5-1)
Starting (triggering) Measurement
Instrument triggering method
[Trig]
key on the front
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