HP WaterSkis E1312A, WaterSkis E1412A manual Bus Triggering, Wait-for-Trigger State

Bus Triggering

Note

The Wait-for-Trigger State

The multimeter is triggered from the VXIbus. This mode is selected with the TRIGger:SOURce BUS command.

•Use the *TRG command from the HP-IB to trigger the multimeter when TRIG:SOUR BUS is used. The *TRG command will not be 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

TRIG:SOUR BUS is not implemented on B-size resource managers, such 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 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 The TRIGger:COUNt <number> command sets the number of triggers the 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 MEASure and CONFigure commands set trigger count to 1.

Substituting MIN for the number parameter sets the trigger count to 1.

Substituting MAX for the number parameter sets the trigger count to 50,000.

48 HP E1312A/E1412A Multimeter Application Information Chapter 2