GTL
Use the go to local (GTL) command to put a remote-mode instrument into local mode. Leaving the
remote state also restores operation of all front-panel controls.
DCL
Use the device clear (DCL) command to clear the GPIB interface and return it to a known state. The
DCL command is not an addressed command, so all instruments equipped to implement DCL are
returned to a known state simultaneously.
When the 2600B receives a DCL command, it:
• Clears the input buffer, output queue, and command queue
• Cancels deferred commands
• Clears any command that prevents the processing of any other device command
The DCL command does not affect instrument settings and stored data.
SDC
The selective device clear (SDC) command is an addressed command that performs essentially the
same function as the device clear (DCL) command. However, because each device must be
individually addressed, the SDC command provides a method to clear only selected instruments,
instead of clearing all instruments simultaneously with the DCL command.
When the 2600B receives an SDC command, it:
• Clears the input buffer, output queue, and command queue
• Cancels deferred commands
• Clears any command that prevents the processing of any other device command
An SDC call does not affect instrument settings and stored data.
GET
The group execute trigger (GET) command is a GPIB trigger that triggers the instrument to make
readings from a remote interface.
SPE, SPD
Use the serial polling sequence to obtain the 2600B serial poll byte. The serial poll byte contains
important information about internal functions (see Status model (on page 12-1)). Generally, the serial
polling sequence is used by the controller to determine which of several instruments has requested
service with the SRQ line. The serial polling sequence may be performed at any time to obtain the
status byte from the 2600B.
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