Internal Triggering In the internal trigger mode (remote interface
only), the trigger signal is always present. When you place the meter in
the wait-for-trigger state, the trigger is issued immediately. This is the
power-on trigger source for remote interface operation.
To select the internal trigger source, send the following command. The
CONFigure and MEASure? commands automatically set the trigger
source to IMMediate.
TRIGger:SOURce IMMediate
After setting the source to IMMediate, an INITitate or a READ?
command will trigger the measurement.
Software (Bus) Triggering The bus trigger mode is available only
from the remote interface. This mode is similar to the single trigger mode
from the front panel, but you trigger the meter by sending a bus trigger
command.
• To select the bus trigger source, send the following command.
TRIGger:SOURce BUS
• To trigger the meter from the remote interface (HP-IB or RS-232),
send the *TRG (trigger) command. The *TRG command will not be
accepted unless the meter is in the wait-for-trigger state.
• You can also trigger the meter from the
HP-IB interface by sending the
IEEE-488 Group Execute Trigger (GET) message. The meter must be
in the wait-for-trigger state. The following statement shows how to
send a GET from a Hewlett-Packard controller.
TRIGGER 722 (group execute trigger)
Chapter 3 Features and Functions
Triggering
84
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