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8 Trigger

8.1 Trigger

output trigger should not be off if internal source works as list sequence mode and

Trig 2 Out should not be off if internal source works as MXG mode. Otherwise, no

trigger occurs, and measurement does not start.

Example Swept SA measurement:

:TRIG:SOUR INTernal

Measurements other than Swept SA:

:TRIG:<meas>:SOUR INTernal

Annunciation Internal (in the Meas Bar)

8.1.1.19 Prot Channel Detection

Selects a protocol channel detection Base Station Emulation as the trigger. When

Prot Channel Detection is selected, a new sweep/measurement will start when the

protocol channel detection trigger condition is met.

Protocol Channel Detection Trigger is defined as the Base Station Emulation

protocol channel detection event of PUSCH, PUCCH, PRACH or SRS. With this

trigger, the IQ data, and therefore the measurement, is aligned at the beginning of

the LTE sub-frame where the particular event was detected. Channel transmission is

aligned to the sub-frame boundary; therefore, the measurement is aligned with its

transmission with the exception of SRS, which might not start at the beginning of

the sub-frame containing the SRS as it might have an offset from the start of the

sub-frame base on the SRS configuration, In this case, the trigger and measurement

are aligned to the beginning of the sub-frame containing SRS as defined by this

trigger type (which is not the beginning of the SRS itself due to the offset).

This trigger type is only available in UXM.

Example

:TRIG:<meas>:SOUR PRTC

Annunciation Prot Chan Det (in the Meas Bar)

8.1.1.20 Prot Frame Aligned

Selects a protocol frame aligned Base Station Emulation as the trigger. When Prot

Frame Aligned is selected, a new sweep/measurement will start when the protocol

frame aligned data trigger condition is met.

Prot Frame Aligned Trigger is aligned with the Base Station Emulation Protocol

uplink frame timing boundary. It depends on the technology format of the base

station call processing.

This trigger type is only available in UXM.

Example

:TRIG:<meas>:SOUR PRTF

Annunciation Prot Frame (in the Meas Bar)

Short Range Comms & IoT Mode User's &Programmer's Reference 2340

Keysight x-series Instruction Manual

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