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Chapter 4 Features and Functions
Scanning
4
4
Idle State
The instrument is considered to be in the idle state whenever it is not
operating within any one of the layers. When the instrument is taken out
of the idle state, the SCAN annunciator lights up and operation proceeds
to the arm layer. From the remote interface, the INITiate command
takes the instrument out of the idle state.
Arm Layer
The instrument requires an arm source to allow operation to proceed into
the trigger layer. You can select the arm source from the following:
•
TIMER — with timer arm source selected, the instrument will not
proceed to the trigger layer unless the specified time interval has
elapsed.
•
IMM — with IMM (default) arm source selected, operation
immediately proceeds to the trigger layer as soon as the instrument is
taken out of the idle state.
•
BUS — with bus arm source selected, the instrument will not proceed
to the trigger layer unless a GET or a *TRG command is received, or
Step on the front-panel is pressed.
•
EXT — with external (EXT) arm source selected, the instrument will
not proceed to the trigger layer unless an external trigger is received
from the specified trigger-in line.
•
MIX — with mix arm source selected, the instrument will not proceed
to the trigger layer unless a BUS event or EXTernal event occurs.
•
HOLD — with hold arm source selected, the instrument will wait for
a TRIGger:IMMediate command before proceeding.
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