ABORt

The ABORt command forces the trigger system to the idle state. Any measurement or output sequence in process is aborted as quickly as possible. ABORt does not alter the settings programmed by other commands, unlike *RST. ABORt is a root level event command and cannot be queried.

IMMediate

The IMMediate command provides a one-time override of the normal downward path in an event-detection state. The instrument must be in the specified event detection state when IMMediate is received, or an error is generated and the command has no effect. For example, the instrument must be in the TRIG state for :TRIGger : IMMediate to work properly. If the instrument is in the idle state, the command has no effect, and an error would be generated. IMMediate is an event command and cannot be queried.

ODELay

The ODELay command specifies the time between the source settling and the time the trigger out signal is sent. Specifying :TRIGger:ODELay <num>(time suffix) instructs the synthesizer to set the specified time as the delay necessary to ensure proper settling. Sending *RST sets ODELay to an instrument dependent value, usually zero.

SOURce

The SOURce command selects the trigger source for an event-detection state. Only one source can be specified at a time, and all others are ignored. Sending *RST sets SOURce to IMMediate. The most commonly used sources are:

nBUS

The event detector is satisfied by either Group Execute Trigger(<GET>) or a *TRG command. <GET> is a low level HP-IB message that can be sent using the TRIGGER command in

HP BASIC.

nEXTernal

An external signal connector is selected as the source.

nIMMediate

Qualified events are generated automatically. There is no waiting for a qualified event.

Getting Started Programming l-l 13