Using Device Clear To Halt Measurements; Talk Only For Printers - Agilent Technologies 34420A User Manual

Chapter 4 Remote Interface Reference

Using Device Clear to Halt Measurements

Using Device Clear to Halt Measurements
Device clear is an
IEEE-488
halt measurements in progress. Different programming languages and
interface cards provide access to this capability through their
IEEE-488
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 following actions.
All measurements in progress are aborted.
The meter returns to the trigger "idle state".
The meter's input and output buffers are cleared.
The meter is prepared to accept a new command string.
For operation, sending the control-C character will perform
RS-232
the equivalent operations of the
The meter's (data terminal ready) handshake line will be true
DTR
following a device clear message. See "DTR / DSR Handshake
Protocol," on page 179 for further details.

TALK ONLY for Printers

You can set the meter's
In this mode, the meter can output readings directly to a printer without
being addressed by a bus controller. Address 31 is not a valid address if
you are operating the meter from the
controller.
If you select the
RS-232
talk only address (31), the meter will send readings over the
interface when in the local mode.
low-level bus message which can be used to
device clear message.
IEEE-488
GPIB
address to "31" which is the talk only mode.
HP-IB
GPIB
interface with a bus
HP-IB
interface and then set the
GPIB
address to the
HP-IB
RS-232
187
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