5-129
Power-up
Saved power-on setup
*RST
IMMediate (all layers)
:SYSTem:PRESet
IMMediate (Arm Layer 1 and Arm Layer 2),
MANual (TRIGger Layer)
:SOURce?
Query programmed control source.
Short-form formats:
:arm:sour?
:arm:lay2:sour?
:trig:sour?
Response message:
HOLD, MAN, IMM, BUS, TLIN, EXT or TIM
These commands are used to select the event control source for the specified layer. With HOLD
selected, operation will stop and wait indefinitely in the specified layer. While in HOLD, oper-
ation can be continued by sending the :IMMediate command or the :SIGNal command. Keep
in mind however, that if the layer count >1, HOLD will again be enforced when operation loops
back around.
With IMMediate selected (do not confuse :SOURce IMMediate with :IMMediate), operation
will immediately pass through the specified layer.
A specific event can be used to control operation through a layer. With BUS selected, operation
will continue when a GPIB trigger (GET or *TRG) is sent. With TLINk selected, operation will
continue when an input trigger via the Trigger Link is received. With EXTernal selected, oper-
ation will continue when an External Trigger is received.
A TIMer event is available for Arm Layer 2 and the Trigger Layer. With TIMer selected for the
specified layer, the event occurs at the beginning of the timer interval, and every time the timer
times out. For example, if the Trigger Layer timer is programmed for a 30 second interval, the
first pass through the Trigger Layer control source will occur immediately. Subsequent trigger
events will then occur every 30 seconds. The interval for the timer is set using the :TIMer com-
mand. This timer interval is independent of the :DELay setting.
10 OUTPUT 707; “:trig:sour imm; sour?”
20 ENTER 707; A$
30 PRINT A$
40 END
Line 10
Sets the channel control source to immediate, and then queries the programmed con-
trol source.
Line 20
Addresses the 7001 to talk.
Line 30
Displays the programmed channel control source (IMM).
Defaults
Query
commands
Description
Programming
example
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