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Key Reference
Sweep
Trigger
Accesses the menu of keys that allow you to select the
trigger mode of the analyzer. This softkey is only available in
zero span.
Free Run
New sweep starts as soon as possible after the current
sweep ends.
Video
Activates the trigger condition that starts the next sweep if
the detected RF envelope voltage rises to a level set by the
video trigger level. When Video is pressed, a line appears on
the display. The analyzer triggers when the input signal
exceeds the trigger level at the left edge of the display.
Change the trigger level by using the arrow keys, the knob,
or the numeric keypad.
This function is not available when the Resolution Bandwidth is less
N O T E
than 1 kHz. Selecting a Resolution Bandwidth less than 1 kHz while in
Video Trigger mode, changes the Trigger mode to Free Run.
External
Activates the trigger condition that will start a sweep when
the external voltage (connected to EXT TRG IN on the rear
panel) passes through approximately 2 volts. The external
trigger signal must be a 0 V to +5 V TTL signal.
Key access: Trace > More
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