Keysight Technologies N9321C User Manual page 169

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
Gated Sweep
Accesses the menu of keys to select the gated sweep parameters.
This function is used to ensure fast and accurate measure TDM,
TDD or RF busted signals.
Key access: Sweep > Gated Sweep
Gated Sweep
Turn on/off the gated sweep function.
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