Keysight x-series User Manual

8 Trigger
8.1 Trigger
or
EXTernal
EXTernal2
triggers on an externally connected trigger source on the front panel
IQMag
triggers on the magnitude of the I/Q signal
IDEMod
triggers on the I/Q signal's demodulated I voltage
QDEMod
triggers on the I/Q signal's demodulated Q voltage
IINPut
triggers on the I channel's ADC voltage
QINPut
triggers on the Q channel's ADC voltage
AIQMag
triggers on the magnitude of the auxiliary receiver channel I/Q signal
*OPC should be used after requesting data. This will hold off any subsequent changes to the selected
trigger source, until after the sweep is completed and the data is returned
Available ranges, and from mode-to-mode presets can vary
Status Bits/OPC
dependencies
The Status Operation Register bit 5 "Waiting for Trigger" is set at the same time as the Sweeping or
Measuring bit is set. It is cleared when the trigger actually occurs (that is, after the trigger event
occurs and all the applicable trigger criteria have been met). A corresponding pop-up message
("Waiting for trigger") is generated if no trigger signal appears after approximately 2 sec. This message
goes away when a trigger signal appears
8.1.1.1 Free Run
Free Run triggering occurs immediately after the sweep/measurement is initiated.
Example Swept SA measurement:
:TRIG:SOUR IMM
Measurements other than Swept SA:
:TRIG:<meas>:SOUR IMM
Annunciation Free Run (in the Meas Bar)
8.1.1.2 Video/ADC
The Video trigger condition is met when the video signal at the left edge of the
graticule (the filtered and detected version of the input signal, including both RBW
and VBW filtering) crosses the video trigger level with the chosen slope.
The Video trigger level is shown as a labeled line on the display. The line is displayed
as long as Video is the selected trigger source. The Trigger Level line can be
adjusted using the step keys, knob, or numeric keypad. It can also be dragged on
the display with your finger or with a mouse.
When the detector selected for all active traces is the average detector, the video
signal for triggering does not include any VBW filtering.
Spectrum Analyzer Mode User's &Programmer's Reference 2646

Keysight x-series Specifications

General

Analysis Bandwidth	Up to 1 GHz (depending on model)
Real-Time Bandwidth	Up to 1 GHz (depending on model)
Form Factor	Benchtop
Connectivity	LAN, USB, GPIB
Resolution Bandwidth	1 Hz to 10 MHz (depending on model)