Using Device Clear to Halt Measurements
Device clear is an IEEE-488 low-level bus message which can be used to
halt measurements in progress. Different pro gr amming languages and
IEEE-488 interface cards provide access to this capability through their
own unique commands. The status registers, the error queue, and all
configuration states are left unchanged when a device clear message is
received. Device clear performs the followi ng act i o ns.
•All measurements in progress are aborted.
•The multimeter returns to the trigger “idle stat e. ”
•The multimeter’s input and output buffers are cleared.
•The multimeter is prepared to accept a new command string.
For RS-232 operation, sending the <Ctrl-C> character will perform
the equivalent operations of the IEEE-488 device clear message.
The multimeter’s DTR (data terminal ready) handshake line will be true
following a device cle ar message. See “DTR/DSR Hand s ha k e Prot oc ol, ”
on page 151 for further details.
TALK ONLY for Printers
You can set the address to “31” which is the talk only mode. In this
mode, the multimeter can output readings directly to a printer without
being addressed by a bus controller (over either GPIB or RS-232).
For proper operation, make sure your printer is configured in the
listen always mode. Address 31 is not a valid address if you are
operating the multimeter from the GPIB interface with a bus controller.
If you select the RS-232 interface and then set the GPIB address to the
talk only address (31), the multimeter will send readings over the
RS-232 interface when in the local mode.
Chapter 4 Remote Interface Reference
Using Device Clear to Halt Measurements
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