Agilent Technologies 6834B Guia do Utilizador descarregar pdf (Página 140)

4 - Programming Examples

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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]

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Agilent Technologies 6834B Guia do Utilizador Página 140