Using Device Clear To Halt Measurements; Talk Only For Printers - HP 34401A 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 multimeter returns to the trigger "idle state."
The multimeter's input and output buffers are cleared.
The multimeter is prepared to accept a new command string.
For operation, sending the <Ctrl-C> character will perform
RS-232
the equivalent operations of the
The multimeter's (data terminal ready) handshake line will be true
DTR
following a device clear message. See "DTR/DSR Handshake Protocol,"
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
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
If you select the interface and then set the
RS-232
talk only address (31), the multimeter will send readings over the
interface when in the local mode.
RS-232
160
low-level bus message which can be used to
device clear message.
IEEE-488
HP-IB
interface with a bus controller.
HP-IB
HP-IB
or ).
RS-232
address to the