Agilent Technologies N3280A Measurement Trigger Model, Enabling the Measurement Trigger System

5 - Programming the DC Source

Measurement Trigger Model

Figure 5-3 is a model of the measurement trigger system. The rectangular boxes represent states. The arrows show the transitions between states. These are labeled with the input or event that causes the transition to occur.

IDLE STATE	ABOR
	*RST
INITiate:NAME ACQ
INITIATED STATE
TRIGGER RECEIVED
IS AN OUTPUT
CHANGE IN
PROGRESS?	YES
NO
SETTLING DELAY
DATA ACQUIRED

Figure 5-3. Model of Measurement Trigger System

Enabling the Measurement Trigger System

When the dc source is turned on, the trigger system is in the idle state. In this state, the trigger system is disabled and it ignores all triggers. Sending the following commands at any time returns the trigger system to the idle state:

ABORt *RST

The INITiate commands move the trigger system from the idle state to the initiated state. This enables the measurement system to receive triggers. To initiate the measurement trigger system, use:

INIT:NAME ACQ

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 measurement is desired.

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. The following measurement trigger sources can be selected:

BUS - Selects GPIB bus triggers.

EXTernal - Selects the external trigger input as the trigger source.

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