User`s guide

Chapter 5 81
Making a Measurement
Trigger system
5. Making a Measurement
System-wide state and transition
“Hold” State
The trigger system switches to “Hold” state when one of the following commands has been
executed (arrow “e” in Figure 5-1). Also, turning on the power to the instrument puts the
trigger system into “Hold” state. When the power is turned on, however, continuous
initiation mode is on for channel 1 and the trigger source is set to “Internal”; therefore, the
trigger system immediately switches to “Waiting for Trigger” state and subsequently
repeats transitions between “Measurement” and “Waiting for Trigger” states.
• :ABOR on page 202
• *RST on page 199
When the trigger system is in “Hold” state and one of the channels switches to “Initiate”
state (arrow “f” in Figure 5-1), then the trigger system switches to “Waiting for Trigger”
state (arrow “a” in Figure 5-1).
“Waiting for Trigger” State
When the trigger system is in “Waiting for Trigger” state and either the instrument is
triggered (i.e., a trigger is detected) or one of the commands is executed, then the trigger
system switches to “Measurement” state (arrow “B” in Figure 5-1).
• :TRIG on page 484
• :TRIG:SING on page 484
As shown in the table below, how the instrument is triggered differs depending on which
trigger source is specified. To specify the trigger source, use the :TRIG:SOUR command
on page 485 command.
Trigger Source How the instrument is triggered
Internal trigger The instrument is automatically triggered within itself.
External trigger The instrument is triggered when a trigger signal is input
through the Ext Trig terminal or handler interface.
Bus trigger The instrument is triggered when the *TRG command on
page 201 command is issued.
Manual trigger The instrument is triggered when you press
[Trigger] - Trigger on the front panel.