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.
Program fragment
PRINT #1, "clear 16" 'Clear 2010
GET (group execute trigger)
GET is a GPIB trigger that is used as an arm, scan and/or measure event to control operation.
The Model 2010 Multimeter reacts to this trigger if it is the programmed control source. The
control source is programmed from the SCPI: TRIGger subsystem.
With the instrument programmed and waiting for a GPIB trigger, the following program
fragment will provide the GET:
Program fragment
PRINT #1, "trigger 16" 'Trigger 2010 from over the bus
This sends IEEE-488 commands UNT UNL LISTEN 16 GET. When the command is
executed, the trigger event occurs. (The command TRIGGER just sends GET. Any other
listeners are triggered when the command is executed.)
SPE, SPD (serial polling)
Use the serial polling sequence to obtain the Model 2010 serial poll byte. The serial poll byte
contains important information about internal functions. 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 2010 Multimeter.
Program fragment
PRINT #1, "spoll 16" 'Serial poll the 2010
INPUT #2, S 'Read serial poll byte
PRINT S 'Display the decimal value of the
'serial poll byte
4-14 Remote Operation
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