Keithley TEC SourceMeter 2510, User Manual

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6-12 Remote Operations Models 2510 and 2510-AT User’s Manual
GTL (go to local)
Use the GTL command to put a remote-mode instrument into local mode. The GTL com-
mand also restores front panel key operation.
DCL (device clear)
Use the DCL command to clear the GPIB interface and return it to a known state. Note
that the DCL command is not an addressed command, so all instruments equipped to
implement DCL will do so simultaneously.
When the Model 2510 receives a DCL command, it clears the Input Buffer and Output
Queue, cancels deferred commands, and clears any command that prevents the processing
of any other device command. A DCL does not affect instrument settings and stored data.
SDC (selective device clear)
The SDC command is an addressed command that performs essentially the same function
as the DCL command. However, since each device must be individually addressed, the
SDC command provides a method to clear only selected instruments instead of clearing all
instruments simultaneously, as is the case with DCL.
GET (group execute trigger)
GET is a GPIB trigger that is used as an arm event to control operation.
SPE, SPD (serial polling)
Use the serial polling sequence to obtain the Model 2510 serial poll byte. The serial poll
byte contains important information about internal functions. (See
Status Structure in
Section 7 .) Generally, the serial polling sequence is used by the controller to determine
which of several instruments has requested service with the SRQ line. However, the serial
polling sequence may be performed at any time to obtain the status byte from the Model
2510.
Programming syntax
The information in this section covers syntax for both common commands and SCPI com-
mands. For information not covered here, see the IEEE- 488.2 and SCPI standards. See
Common Commands in Section 8 and SCPI Command Reference in Section 10 for
details.
Command words
Program messages are made up of one or more command words.