8 Trigger
8.1 Trigger
Notes Sending this command does not switch the setting from absolute to relative; to switch it you need to
send :TRIGger[:SEQuence]:RFBurst:LEVel:TYPE
The relative trigger level is not available in some measurements. In those measurements the
RELative parameter, and :TRIGger[:SEQuence]:RFBurst:LEVel:TYPE generates an
error if sent
Dependencies This control is grayed-out and Absolute Trigger Level selected if the required hardware is not present
in your instrument and the current measurement does not support Relative triggering
Only appears when RF Burst is selected as the Trigger Source
Preset -6 dB
GSM: -25 dB
State Saved Saved in instrument state
Min -45 dB
Max 0 dB
Backwards
Compatibility SCPI
:TRIGger[:SEQuence]:RFBurst:LEVel
This legacy command is aliased to
:TRIGger[:SEQuence]:RFBurst:LEVel:RELative
because PSA had only relative burst triggering
In some models, a variety of burst trigger circuitry is available, resulting in various
available burst trigger bandwidths. The instrument automatically chooses the
appropriate trigger path based on the hardware configuration and other settings of
the instrument. Here is the RF Burst Trigger Bandwidth table for Swept SA
Measurement in SA mode:
Model Option Span Swp Type FFT
Width
Trigger
BW, −10
dB
Notes
EXA any All all all 16 MHz
MXA w/o B25 All all all 16 MHz
MXA B25 Zero N/A N/A 16 MHz
MXA B25 All Swept N/A 16 MHz
MXA B25 < 8 MHz FFT all 16 MHz
MXA B25 ≥ 8 MHz FFT 25 MHz 30 MHz
PXA any all all all > 80 MHz Exceptions(*)
(*) Exceptions: When the RF Burst Trigger Level Type is Absolute, the start
frequency is below 300 MHz, and the sweep type is either Swept or FFT with an FFT
width of less than 25 MHz, then the RF Burst Trigger Bandwidth is not >80 MHz. It
would be 16 MHz except in the subcase of Sweep Type = FFT and FFT Width
between 8 and 25 MHz inclusive, where it would be 30 MHz.
Spectrum Analyzer Mode User's &Programmer's Reference 2670
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