Section 3: Functions and features Series 2280 Precision DC Power Supply Reference Manual
3-26 077085503 / March 2019
Idle and initiate
The instrument is in the idle state when it is not operating in the arm layer or trigger layer of the
trigger model. When in the idle state, the instrument cannot perform any measurements. You can
send the following commands to initiate the trigger model:
:INITiate
:INITiate:CONTinuous
:READ?
:MEASure:<function>?
Arm layer
The programmable arm events for the arm layer are described as follows:
Immediate: Event detection occurs immediately, allowing operation to continue.
Bus: Event detection occurs when a bus trigger (*TRG) is received.
External Trigger: Event detection occurs when an input trigger is sent through the Digital IO port.
Manual: Event detection occurs when the TRIGGER key is pressed.
Trigger layer
The programmable sources for trigger layer are described as follows:
Immediate: Event detection occurs immediately, allowing operation to continue. Operation
proceeds through the trigger layer to perform the source, delay, AND MEASURE actions.
External Trigger: Event detection occurs when an input trigger is sent through the digital I/O
port. For details, see Digital I/O (on page 3-19).
Manual: Event detection occurs when the TRIGGER key is pressed.
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