Synchronized Wide and Narrow Span Spectral Analyzer Displays
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Solution Overview
Problem
Legacy spectral analyzers have non-synchronous split-screen displays, limiting users to update only one screen at a time, which is inadequate for time-varying signals, and struggle with precision in wide frequency spans and data point representation, leading to incomplete visualization of signals.
Innovation Solution
A system with a signal input, sweeping component, and processor that generates synchronized displays of both wide and narrow frequency spans, allowing continuous updating of both graphs simultaneously, using a Phase Locked Loop for synthesized sweeps and Analog-to-Digital Conversion for data processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a split-screen display is used to show both wide and narrow frequency spans, then users can view both spans simultaneously, but the displays are non-synchronous and only one screen updates at a time
Solution Approach 1:
The display is segmented into multiple independent graph regions (wide span graph and narrow span graph), each capable of independent updating. This allows simultaneous display of different frequency spans while maintaining synchronization through shared data sources, resolving the contradiction between viewing multiple spans and maintaining update synchronization.
Solution Approach 2:
A data synchronization mechanism acts as an intermediary between the wide span and narrow span displays, ensuring that both graphs receive and display synchronized data from the same measurement source. This mediator component enables both screens to update simultaneously with consistent data, eliminating the non-synchronous behavior of legacy systems.
2Ease of manufacture
If the display resolution is limited by VGA or XGA standards, then the device can be manufactured with standard displays, but far fewer pixels are available than data points measured
Solution Approach 1:
The system transitions from a one-to-one mapping of data points to pixels by introducing multiple graph dimensions. Each graph can display a different number of data points appropriate to its span, with the wide span graph showing fewer points across more pixels and the narrow span graph showing more points across fewer pixels, effectively utilizing the display space in multiple dimensional ways.
Solution Approach 2:
Different regions of the display (wide span graph vs. narrow span graph) are assigned different data point densities and resolution characteristics. The wide span graph uses lower data point density to cover broader frequencies, while the narrow span graph uses higher data point density for detailed analysis, allowing each region to optimize its local quality according to its specific viewing needs.
3Adaptability or versatility
If users switch between wide span and narrow span measurements, then they can evaluate signals at different frequency ranges, but they measure two different signals at two separate times
Solution Approach 1:
The system performs continuous simultaneous measurements across both wide and narrow frequency spans through synchronized graph updating. Both graphs receive data from the same continuous measurement process, eliminating the need to switch between measurements and ensuring that both displays reflect the same point in time, thus maintaining continuity of the measurement action.
Solution Approach 2:
The display system dynamically adjusts between wide and narrow span views while maintaining synchronization, allowing users to switch between different frequency range evaluations without interrupting the measurement process. Both graphs update dynamically and simultaneously, enabling real-time comparison across different frequency ranges of the same signal.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables users to visualize time-varying signals effectively by maintaining synchronized updates of wide and narrow span displays, reducing data loss and improving measurement efficiency, especially for signals that change over time.
Implementation Method 1
Some more advanced modern day spectral analyzers have synthesized sweeps over wider arbitrary spans (greater than 10 MHz)
Implementation Method 2
The data is sampled, digitized, and processed to produce synchronized displays
Data Source
AI summary
A method for displaying signal analysis data comprises performing a plurality of sweep operations upon a received signal. With the sweep operations, spectral analysis is performed upon a first frequency band of the received signal. Displays are rendered of data generated from the spectral analysis in the first band and a second band different from the first band simultaneously, and the displays in the first band and the second bands are updated according to the sweep operations.