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4
ArbConnection
The Control Panels
Figure 4-11, the Trigger Panel
Trigger Parameters
Slope - The Slope group lets you select edge sensitivity for the
trigger input of the 2074. If you click on Pos, the instrument will
trigger on the rising edge of the trigger signal. Likewise, if you click
on Neg, the instrument will trigger on the falling edge of the trigger
signal.
Source - The 2074 can accept triggers from a number of sources:
BUS, External or Mixed. When the Bus option is selected, only bus
commands trigger the instrument. The External position is the
default trigger option which enables the rear panel trigger input and
the front panel manual trigger button. The Mixed position disables
the rear-panel trigger input until a software command is executed,
the trigger source then reverts to the rear-panel trigger input.
Manual – Use this button when an external generator is not
available. Pressing the Manual button is stimulating the instrument
as if an external trigger has been applied.
Trigger Level – Programs the trigger level parameter. Depending
on the slope setting, the 2074 will be stimulated to output
waveforms when the trigger level threshold has been crossed.
4-21
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