User`s guide

Using the CONFigure Command
The following program segment shows how to use the CONFigure command
with the READ? command to make an externally-triggered measurement. The
CONFigure command configures the instrument for dc voltage measurements.
Note that the CONFigure command does not place the instrument in the "wait-
for-trigger" state.
The READ? command places the instrument in the "wait-for-trigger" state,
initiates a measurement when the rear-panel Ext Trig Inputline is pulsed (low
by default), stores the reading in memory, and then transfers the reading to
the instrument's output buffer. The default range (autorange) and resolution
(1 PLC) are used for the measurement.
CONF:VOLT:DC TRIG:SOUR EXT
READ?
Typical Response: +4.27150000E-00
The following program segment is similar to the previous example but it uses
the INITiate command to place the instrument in the "wait-for-trigger" state.
The INITiate command places the instrument in the "wait-for-trigger" state,
initiates a measurement when the rear-panel Ext Trig Input line is pulsed (low
by default), and sends the reading to reading memory. The FETCh? command
transfers the reading from reading memory to the instrument's output buffer.
CONF:VOLT:DC
TRIG:SOUR EXT
INIT
FETC?
Typical Response: +5.34250000E-00
Storing readings in memory using the INITiate command is faster than sending
readings to the output buffer using the READ? command (provided you do not
send the FETCh? command until done). The INITiate command is also an
"overlapped" command. This means that after executing the INITiate
command, you can send other commands that do not affect the measurements.
This allows you to check for data availability before initiating a read attempt
that might otherwise time out. Note that the FETCh? command will wait until
all measurements are complete to terminate. The 34410A can store up to
50,000 readings in internal reading memory. The 34411A/L4411A can store
up to 1,000,000 readings in internal reading memory.