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8-14 Triggering Model 2701 User’s Manual

Remote programming – triggering

Trigger model (remote operation)

The following paragraphs describe how the Model 2701 operates for remote operation.

The ﬂow chart in Figure 8-10 summarizes operation over the bus. The ﬂow chart is called

the trigger model because operation is controlled by SCPI commands from the Trigger

subsystem. Key SCPI commands are included in the trigger model.

Idle and initiate

The instrument is considered to be in the idle state whenever operation is at the top of the

trigger model. As shown in Figure 8-10, initiation needs to be satisﬁed to take the

instrument out of idle. While in the idle state, the instrument cannot perform any measure

or step/scan operations.

The following commands will return operation to the top of the trigger model (idle) at the

START point of the trigger model:

• ABORt

• *RCL 0, 1, 2, or 3

• SYSTem:PREset

• *RST

What happens next depends on the state of initiation. If continuous initiation is already

enabled, the instrument will leave the idle state. SYSTem:PRESet enables continuous

initiation. Therefore, operation will immediately leave the idle state when it is sent. The

*RCL command will do the same if INITiation:CONTinuous ON is a user-saved default.

*RST disables continuous initiation. Therefore, the instrument will remain in the idle

state.

Either of the following two initiate commands will take the instrument out of the idle state:

• INITiate

• INITiate:CONTinuous ON

NOTE While in remote, pressing the LOCAL key restores continuous front panel

operation.

Keithley 2701 User Manual

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