HP 34970A manual Using Device Clear, Hz ABORt x xyzy v vz v

Chapter 5 Remote Interface Reference

Using Device Clear

Using Device Clear

Device Clear is an IEEE-488 low-level bus message which you can use to return the instrument to a responsive state. Different programming languages and IEEE-488 interface cards provide access to this capability through their own unique commands. The status registers, the error queue, the alarm queue, and all configuration states are left unchanged when a Device Clear message is received. Device Clear performs the following actions.

∙If a scan is running, it is aborted.

∙The instrument returns to the scan trigger “idle state.”

∙The instrument’s input and output buffers are cleared.

∙The instrument is prepared to accept a new command string.

For RS-232 operation, sending the <P4P > character will perform the equivalent operations of the IEEE-488 Device Clear message.

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