HP 8360 B Series, Руководство пользователя

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Description of
The HP 8360 B-Series swept signal generators follow the SCPI model
Triggering in the of triggering. It is a layered model with the structure shown in
HP 8360 B-Series Swept
Figure l-42.
Signal Generators
S t a t e
Figure l-42. HP 8380 Simplified Trigger Model
The process of sweeping involves all 3 of these states. The IDLE
state is where the sweep begins. The IDLE state is left when
the sweep is initiated. This can happen on a continuous basis
: CONT ON) or on a demand basis CONT OFF). The
functions of continuous and single sweeps are handled by this
command. When the
ON command is given, the sweep
is continuously re-initiated. When in the OFF state, the sweep is
initiated with the
command.
Once initiated, the
wait for trigger
state is entered. Here, the trigger
signal selected by the command is examined until a
TRUE condition is detected. These trigger signals are:
BUS
This signal is always TRUE.
This is the external trigger input jack. A positive
transition on this jack constitutes a TRUE signal.
This signal is the HP-IB <get> (Group Execute
Trigger) message or a *TRG command.
When a TRUE signal is found, the sweep is actually started.
The act of producing the sweep in some cases involves the use
of trigger signals. For example, the stepped and list sweeps
have modes that allow triggering for point-to-point advancement
through the sweep. These trigger signals are selected by individual
commands in the appropriate subsystems (i.e.
LIST:TRIGger:SOURce and SWEep:TRIGger:SOURce). The
definition of these signals in the swept signal generator cause the
Getting Started Programming l-l 17