Keysight x-series User Manual

8 Trigger
8.1 Trigger
Dependencies Only appears when RF Burst is selected as the Trigger, Gate or Periodic Sync Source
Couplings This same level is used for the RF Burst trigger source in the Trigger menu, for the RF Burst selection
in the Gate Source menu, and also for the RF Burst selection in the Periodic Sync Src menu
Preset LTEA FDD/TDD modes: -40 dBm or -50 dBm depending on the hardware
5G NR mode: -40 dBm
All other modes: -20 dBm
State Saved Saved in instrument state
Min -200 dBm
Max 100 dBm
Backwards
Compatibility SCPI
:TRIGger[:SEQuence]:FRAMe:RFBurst:LEVel:ABSolute
8.1.7 Relative Trigger Level
Sets the relative trigger level for the RF burst envelope.
In some models, the relative burst trigger function is implemented in hardware. In
other models, without the advanced triggering hardware required, the relative burst
trigger function is implemented in software in some measurements, and is
unavailable in other measurements.
When implemented in software, the relative RF Burst trigger function is
implemented as follows:
1.
The measurement starts with the absolute RF Burst trigger setting. If it cannot
get a trigger with that level, auto trigger fires and the acquisition starts anyway.
After the acquisition, the measurement searches for the peak in the acquired
waveform and saves it
2.
In the next cycle of the measurement, the measurement determines a new
absolute RF Burst level based on the peak value from the first measurement and
the Relative RF Burst Trigger Level (always 0 or negative dB) set by the user. The
following formula is used: absolute RF Burst level = peak level of the previous
acquisition + relative RF Burst level
3.
If the new absolute RF Burst level differs from the previous by more than 0.5 dB,
the new level is sent to the hardware; otherwise, it is not updated (to avoid
slowing down the acquisition)
Steps 2 and 3 repeat for subsequent measurements.
Remote Command
:TRIGger[:SEQuence]:RFBurst:LEVel:RELative <rel_ampl>
:TRIGger[:SEQuence]:RFBurst:LEVel:RELative?
Example Set the trigger level of the RF burst envelope signal to the relative level of -10dB:
:TRIG:RFB:LEV:REL -10 dB
2669 Spectrum Analyzer Mode User's &Programmer's Reference

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)