N-Way Switch Automates Multi-Channel Calibration
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Solution Overview
Problem
Current test equipment, such as single-channel calibrators, require manual intervention to calibrate multiple channels, which is time-consuming and limits operator productivity, while multi-channel calibrators are costly and have low utilization due to their specialized nature.
Innovation Solution
A switching system that interfaces a single-channel test equipment with a multi-channel device, utilizing an N-way switch and controller to automatically route test signals across multiple channels, allowing automation software to control the calibration process without manual cable movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single-channel calibrator is used, then the equipment cost is low and versatility is high, but manual cable movement is required which reduces productivity
Solution Approach 1:
An N-way switch is introduced as an intermediary device between the single-channel calibrator and the multi-channel oscilloscope. The switch automatically routes the calibration signal to different channels based on control signals, eliminating the need for manual cable movement while maintaining compatibility with single-channel equipment.
Solution Approach 2:
The manual mechanical operation of moving cables between channels is replaced with an automated electronic switching system controlled by software or microcontroller, significantly improving productivity and eliminating repetitive manual tasks.
2Ease of operation
If a five-channel calibrator is used, then full automation is achieved, but the equipment cost is considerably higher
Solution Approach 1:
The system makes a single-channel calibrator versatile by enabling it to calibrate multiple channels through the N-way switch. This approach achieves multi-channel calibration capability without requiring a dedicated multi-channel calibrator, thereby reducing equipment cost while maintaining automation.
Solution Approach 2:
The N-way switch acts as a cost-effective intermediary that provides multi-channel routing capability, allowing a single-channel calibrator to function as a multi-channel calibration system, thus avoiding the high cost of purchasing expensive multi-channel calibration equipment.
3Device complexity
If a general RF multiplexer is used, then cost is reduced, but the ability to calibrate external trigger input is lost
Solution Approach 1:
The system provides different routing capabilities for different channels through the N-way switch configuration. Specifically, it enables simultaneous routing to output 1 and output 5 for external trigger calibration, while providing standard sequential routing for other channels, thus achieving localized optimization for specific calibration needs.
Solution Approach 2:
The N-way switch provides dynamic routing capability that can be reconfigured based on the calibration requirements. The system can adaptively route signals to different outputs as needed, providing the flexibility to calibrate external trigger inputs simultaneously with other channels when required.
Data Source
AI summary
A switching system for interfacing a single channel test equipment with a multi-channel device under test, the switching system including: an input connection for connecting to the single channel test equipment; an N-way switch having an N-way switch input coupled to the input connection, the N-way switch having N switch outputs; N output connections coupled to the N switch outputs, the N output connections for connecting to inputs of the multi-channel device under test; a controller coupled to the N-way switch for controlling a connection between the N-way switch input and one of the N switch outputs.