Filter
Top Products
4 - Programming Examples
140
Figure 4-3. Model of Measurement Triggers
Initiating the Measurement Trigger System
When the ac source is turned on, the trigger system is in the idle state. In this state, the trigger system
ignores all triggers. Sending the following commands at any time returns the trigger system to the Idle
state:
ABORt *RST *RCL
The INITiate commands move the trigger system from the Idle state to the Initiated state. This enables
the ac source to receive triggers. To initiate for a measurement trigger, use:
INITiate:IMMediate:SEQuence3 or
INITiate:IMMediate:NAME ACQuire
After a trigger is received and the data acquisition completes, the trigger system will return to the Idle
state. Thus it will be necessary to initiate the system each time a triggered acquisition is desired.
NOTE: You cannot initiate measurement triggers continuously. Otherwise, the measurement data
in the data buffer would continuously be overwritten by each triggered measurement.
Selecting the Measurement Trigger Source
The trigger system is waiting for a trigger signal in the Initiated state. Before you generate a trigger, you
must select a trigger source. To select the external Trigger In BNC as the source, use:
TRIGger:SEQuence3:SOURce EXTernal or
TRIGger:ACQuire:SOURce EXTernal
DATA ACQUISITION
INITIATED STATE
IDLE STATE
ABOR
*RCL
*RST
TRIGGER RECEIVED
INIT[:IMM]