8 Trigger
8.1 Trigger
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.
8.1.8 Period
Sets the period of the internal periodic timer clock. For digital communications
signals, this is usually set to the frame period of your current input signal. In the case
that sync source is not set to OFF, and the external sync source rate is changed for
some reason, the periodic timer is synchronized at every external synchronization
pulse by resetting the internal state of the timer circuit.
Remote Command
:TRIGger[:SEQuence]:FRAMe:PERiod <time>
:TRIGger[:SEQuence]:FRAMe:PERiod?
Example
:TRIG:FRAM:PER 100 ms
Dependencies The invalid data indicator turns on when the period is changed, until the next sweep/measurement
completes
Only appears when Periodic Timer is selected as the Trigger or Gate Source
Couplings The same period is used in the Gate Source selection of the period timer
Preset 20 ms unless noted below:
GSM: 4.615383 ms
5G NR: 10 ms
State Saved Saved in instrument state
Min 100.000 ns
Max 559.0000 ms
2351 Short Range Comms & IoT Mode User's &Programmer's Reference
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