Bus Triggering; The Wait-For-Trigger State; The Trigger Count - HP E1312A User Manual

Bus Triggering

The Wait-for-Trigger

The Trigger Count

48 HP E1312A/E1412A Multimeter Application Information
The multimeter is triggered from the VXIbus. This mode is selected with the
TRIGger:SOURce BUS
•
Use the
when TRIG:SOUR BUS
accepted unless the multimeter is in the wait-for-trigger state.
•
You can also trigger the multimeter from the HP-IB interface by
sending the IEEE-488 Group Execute Trigger (GET) message. The
multimeter must be in the wait-for-trigger state. Send a GET from a
Hewlett-Packard controller with the following command:
TRIGGER 70903
Note
TRIG:SOUR BUS
as the HP E1306A Command Module or the HP E1300A/E1301A B-size
Mainframes.
You must place the multimeter in the wait-for-trigger state after you have
configured it and selected a trigger source. A trigger will not be accepted
State
until the multimeter is in this state. The measurement sequence begins when
the multimeter is in the wait-for-trigger state and it receives a trigger.
You can place the multimeter in the "wait-for-trigger" state by executing
one of the following commands:
READ?
INITiate
Note
The multimeter requires approximately 20ms of set up time after you send
a command to change to the "wait-for-trigger" state. Any triggers that
occur during this set up time are ignored.
The TRIGger:COUNt <
multimeter will accept in the wait-for-trigger state before returning to the
idle state. Use the number parameter to set the trigger count to a value
between 1 and 50,000. The
count to 1.
Substituting
Substituting
command.
*TRG command from the HP-IB to trigger the multimeter
is used. The
is not implemented on B-size resource managers, such
number > command sets the number of triggers the
MEASure
for the number parameter sets the trigger count to 1.
MIN
for the number parameter sets the trigger count to 50,000.
MAX
*TRG command will not be
and CONFigure commands set trigger
Chapter 2