Kusam-meco M3500A, Operation Manual, Page: 150 / 158

150
Serial Poll Disable
Serial Poll Enable
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 programming 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 following actions.
y
All measurements in progress are aborted.
y
The multimeter returns to the trigger “idle state.”
y
The multimeter’s input and output buffers are cleared.
y
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 clear message.
See “DTR/DSR Handshake Protocol,”
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 HP-IB 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 HP-IB interface with a bus controller.
If you select the RS-232 interface and then set the HP-IB address to the
talk only address (31), the multimeter will
send readings over the
RS-232 interface when in the local mode.