User`s manual

The
Wait-For-Trigger
State
For the multimeter to respond to a trigger signal, the multimeter must be
placed in the wait-for-trigger state. This is done with the
INIT[:IMMediate]
command. INIT is also executed by the READ? and MEASure? commands.
The following examples show
INIT implicitly and explicitly specified.
In this segment,
INIT is executed by the MEASure command after
configuring the multimeter for DC voltage measurements. Since
MEASure
sets TRIGger:SOURce IMM, placing the multimeter in the wait-for-trigger
state causes the measurements to be taken and sent to the output buffer. The
measurements overwrite any data currently in the buffer.
!INIT specified implicitly.
MEAS:VOLT:DC? (@100:104)
In this segment, INIT is executed by READ? after the multimeter is
configured with
CONFigure and the low-level command VOLT:APER.
Because
CONFigure sets TRIGger:SOURce IMM, placing the multimeter in
the wait-for-trigger state causes the measurements to be taken and sent to
the output buffer. Again, the measurements overwrite any data in the buffer.
!INIT specified implicitly.
CONF:VOLT:DC (@100:104)
VOLT:APER 267E-3
READ?
This segment shows that the multimeter is configured with the CONFigure
command and is externally triggered with TRIG:SOUR EXT. INIT puts the
multimeter in the wait-for-trigger state. When the external trigger occurs,
the measurements are taken and stored in memory - overwriting any
readings currently in memory.
!INIT specified explicitly.
CONF:VOLT:DC (@100:104)
TRIG:SOUR EXT
INIT
FETCH?
Recall that the stand-alone multimeter returns to the idle state following
each trigger, or after the number of triggers specified by
TRIGger:COUNt
have occurred. The scanning multimeter returns to the idle state after the
number of scans specified by
TRIGger:COUNt have occurred.
Chapter 4 Understanding the HP E1326B/E1411B Multimeter 111