Patent ID: 11933819
Assignee: ROHDE & SCHWARZ GMBH & CO. KG
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 12:
13. A signal processing device comprising:
a signal input for receiving an input signal;
a first trigger unit generating a trigger signal based upon a first trigger event in the input signal;
an acquisition memory for acquiring the input signal at least based upon the trigger signal so as to provide an acquired signal, the acquired signal being assigned to acquisition data stored in the acquisition memory;
a second trigger unit;
a post processing unit; and
a third trigger unit;
wherein the acquisition memory is located between the first trigger unit and the second trigger unit such that second trigger unit is located between the acquisition memory and the post processing unit, said second trigger unit having an input directly connected to an output of the acquisition memory, and an output of said second trigger unit directly connected to the post-processing unit, said second trigger unit being capable of receiving via its input the acquired signal on which the second trigger is applied such that the post-processing unit receives a pre-processed signal that is outputted by said second trigger unit via its output, said second trigger unit being adapted to process the acquired signal according to a second trigger, said second trigger unit being adapted as a zone trigger unit applying a zone trigger,
wherein no output from said second trigger unit is provided to the acquisition memory, said second trigger unit being configured to not affect the acquisition data stored in the acquisition memory, and wherein the acquired signal is filtered by the zone trigger applied by said second trigger unit such that only those acquired signals are post-processed that fulfill the trigger condition of the zone trigger,
wherein the acquired signal comprises signal tuples each having a first axis value and a second axis value, the first axis value being time or frequency, the second axis value being amplitude;
wherein the third trigger unit is located between the first trigger unit and the acquisition memory, the third trigger unit being also adapted as a zone trigger unit applying a zone trigger, wherein the zone trigger of the third trigger unit relates to a larger zone compared to the zone trigger applied by the second trigger unit such that a rough pre-filtering is applied so as to reduce the required storage capacity of the acquisition memory;
wherein a two-stage triggering is provided by the first trigger unit and the subsequent third trigger unit prior to the acquisition wherein the first trigger unit and the third trigger unit together provide a trigger signal that is forwarded to the acquisition memory for acquiring the input signal, and
the post-processing unit being a measurement unit or an analysis unit.