Keysight E4990A - Page 278

E4990A Help
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When the instrument has finished measuring all the active channels, the
trigger system behaves in one of the following ways depending on the
setting of the continuous initiation mode.
If continuous initiation mode is OFF for all channels:
The trigger system switches to "Hold" state (arrow "c" in Trigger system).
If continuous initiation mode is ON for one of the channels:
The trigger system switches to "Waiting for Trigger" state (arrow "d" in
Trigger system).
Channel-Wide States and Transitions
"Idle" State
A channel switches to "Initiate" state when one of the following commands
is executed (arrow "f" in Trigger system).
• :INIT<ch>
• :INIT<ch>:CONT ("ON" specified)
"Initiate" State
A channel in this state is measured just before the entire system switches
to "Measurement" state.
When the instrument has finished measuring a channel, the channel
behaves in one of the following ways depending on the setting of the
continuous initiation mode (set by the INIT<ch>:CONT).
If continuous initiation mode is OFF: The channel switches to "Idle" state
(arrow "g" in Trigger system).
If continuous initiation mode is ON: The channel remains in "Initiate" state
(arrow "h" in Trigger system).
Starting a Measurement Cycle (Triggering the Instrument)
•
Configuring the Instrument
• Starting Measurement on Demand
Other topics about Starting a Measurement (Trigger) and Detecting the
Completion
Configuring the Instrument
1. Use the :INIT<ch>:CONT command to turn ON the continuous initiation
mode for the channels you want to measure and turn the mode OFF
for any other channel.
2. Issue the :TRIG:SOUR command to set the trigger source to Internal
trigger.
Starting Measurement on Demand